# Standard library imports
import sys
from functools import cache
from itertools import repeat
from json import dumps as json_dumps
from json import load as json_load
from multiprocessing import Process
from multiprocessing import Queue as multiprocessing_Queue
from multiprocessing import freeze_support as multiprocessing_freeze_support
from multiprocessing.pool import ThreadPool
from os import O_CREAT, O_WRONLY
from os import cpu_count as os_cpu_count
from os import devnull as os_devnull
from os import fdopen as os_fdopen
from os import listdir as os_listdir
from os import makedirs as os_makedirs
from os import open as os_open
from os import remove as os_remove
from os import sep as os_separator
from os.path import abspath as os_path_abspath
from os.path import basename as os_path_basename
from os.path import dirname as os_path_dirname
from os.path import exists as os_path_exists
from os.path import expanduser as os_path_expanduser
from os.path import join as os_path_join
from os.path import splitext as os_path_splitext
from shutil import rmtree as remove_directory
from subprocess import run as subprocess_run
from threading import Thread
from time import sleep
from timeit import default_timer as timer
# GUI imports
from tkinter import DISABLED, StringVar
from typing import Callable
from webbrowser import open as open_browser

from customtkinter import (CTk, CTkButton, CTkEntry, CTkFont, CTkFrame,
                           CTkImage, CTkLabel, CTkOptionMenu,
                           CTkScrollableFrame, CTkToplevel, filedialog,
                           set_appearance_mode, set_default_color_theme)
from cv2 import (CAP_PROP_FPS, CAP_PROP_FRAME_COUNT, CAP_PROP_FRAME_HEIGHT,
                 CAP_PROP_FRAME_WIDTH, COLOR_BGR2RGB, COLOR_BGR2RGBA,
                 COLOR_GRAY2RGB, COLOR_RGB2GRAY, IMREAD_UNCHANGED, INTER_AREA,
                 INTER_CUBIC)
from cv2 import VideoCapture as opencv_VideoCapture
from cv2 import addWeighted as opencv_addWeighted
from cv2 import cvtColor as opencv_cvtColor
from cv2 import imdecode as opencv_imdecode
from cv2 import imencode as opencv_imencode
from cv2 import resize as opencv_resize
# Third-party library imports
from natsort import natsorted
from numpy import ascontiguousarray as numpy_ascontiguousarray
from numpy import clip as numpy_clip
from numpy import concatenate as numpy_concatenate
from numpy import expand_dims as numpy_expand_dims
from numpy import float32
from numpy import frombuffer as numpy_frombuffer
from numpy import full as numpy_full
from numpy import max as numpy_max
from numpy import mean as numpy_mean
from numpy import ndarray as numpy_ndarray
from numpy import repeat as numpy_repeat
from numpy import squeeze as numpy_squeeze
from numpy import transpose as numpy_transpose
from numpy import uint8
from numpy import zeros as numpy_zeros
from onnxruntime import InferenceSession
from PIL.Image import fromarray as pillow_image_fromarray
from PIL.Image import open as pillow_image_open

if sys.stdout is None:
    sys.stdout = open(os_devnull, "w")
if sys.stderr is None:
    sys.stderr = open(os_devnull, "w")


def find_by_relative_path(relative_path: str) -> str:
    base_path = getattr(sys, '_MEIPASS', os_path_dirname(
        os_path_abspath(__file__)))
    return os_path_join(base_path, relative_path)


app_name = "Warlock Studio"
version = "1.0.0"

background_color = "#121212"  # Negro grisáceo profundo
app_name_color = "#FFFFFF"  # Blanco puro para el nombre de la app
widget_background_color = "#8B0000"  # Rojo oscuro (Dark Red)
text_color = "#DDDDDD"  # Blanco opaco para texto legible

VRAM_model_usage = {
    'RealESR_Gx4':     2.2,
    'RealESR_Animex4': 2.2,
    'RealESRNetx4':   2.2,
    'BSRGANx4':        0.6,
    'BSRGANx2':        0.7,
    'RealESRGANx4':    0.6,
    'IRCNN_Mx1':       4,
    'IRCNN_Lx1':       4,
}

MENU_LIST_SEPARATOR = ["----"]
SRVGGNetCompact_models_list = ["RealESR_Gx4", "RealESR_Animex4"]
BSRGAN_models_list = ["BSRGANx4", "BSRGANx2", "RealESRGANx4", "RealESRNetx4"]
IRCNN_models_list = ["IRCNN_Mx1", "IRCNN_Lx1"]

AI_models_list = (SRVGGNetCompact_models_list + MENU_LIST_SEPARATOR +
                  BSRGAN_models_list + MENU_LIST_SEPARATOR + IRCNN_models_list)
AI_multithreading_list = ["OFF", "2 threads",
                          "4 threads", "6 threads", "8 threads"]
blending_list = ["OFF", "Low", "Medium", "High"]
gpus_list = ["Auto", "GPU 1", "GPU 2", "GPU 3", "GPU 4"]
keep_frames_list = ["OFF", "ON"]
image_extension_list = [".png", ".jpg", ".bmp", ".tiff"]
video_extension_list = [".mp4", ".mkv", ".avi", ".mov"]
video_codec_list = [
    "x264",       "x265",       MENU_LIST_SEPARATOR[0],
    "h264_nvenc", "hevc_nvenc", MENU_LIST_SEPARATOR[0],
    "h264_amf",   "hevc_amf",   MENU_LIST_SEPARATOR[0],
    "h264_qsv",   "hevc_qsv",
]

OUTPUT_PATH_CODED = "Same path as input files"
DOCUMENT_PATH = os_path_join(os_path_expanduser('~'), 'Documents')
USER_PREFERENCE_PATH = find_by_relative_path(
    f"{DOCUMENT_PATH}{os_separator}{app_name}_{version}_UserPreference.json")
FFMPEG_EXE_PATH = find_by_relative_path(f"Assets{os_separator}ffmpeg.exe")
EXIFTOOL_EXE_PATH = find_by_relative_path(f"Assets{os_separator}exiftool.exe")

ECTRACTION_FRAMES_FOR_CPU = 30
MULTIPLE_FRAMES_TO_SAVE = 8

COMPLETED_STATUS = "Completed"
ERROR_STATUS = "Error"
STOP_STATUS = "Stop"

if os_path_exists(FFMPEG_EXE_PATH):
    print(f"[{app_name}] ffmpeg.exe found")
else:
    print(f"[{app_name}] ffmpeg.exe not found, please install ffmpeg.exe following the guide")

if os_path_exists(USER_PREFERENCE_PATH):
    print(f"[{app_name}] Preference file exist")
    with open(USER_PREFERENCE_PATH, "r") as json_file:
        json_data = json_load(json_file)
        default_AI_model = json_data.get(
            "default_AI_model",             AI_models_list[0])
        default_AI_multithreading = json_data.get(
            "default_AI_multithreading",    AI_multithreading_list[0])
        default_gpu = json_data.get(
            "default_gpu",                  gpus_list[0])
        default_keep_frames = json_data.get(
            "default_keep_frames",          keep_frames_list[1])
        default_image_extension = json_data.get(
            "default_image_extension",      image_extension_list[0])
        default_video_extension = json_data.get(
            "default_video_extension",      video_extension_list[0])
        default_video_codec = json_data.get(
            "default_video_codec",          video_codec_list[0])
        default_blending = json_data.get(
            "default_blending",             blending_list[1])
        default_output_path = json_data.get(
            "default_output_path",          OUTPUT_PATH_CODED)
        default_input_resize_factor = json_data.get(
            "default_input_resize_factor",  str(50))
        default_output_resize_factor = json_data.get(
            "default_output_resize_factor", str(100))
        default_VRAM_limiter = json_data.get(
            "default_VRAM_limiter",         str(4))

else:
    print(f"[{app_name}] Preference file does not exist, using default coded value")
    default_AI_model = AI_models_list[0]
    default_AI_multithreading = AI_multithreading_list[0]
    default_gpu = gpus_list[0]
    default_keep_frames = keep_frames_list[1]
    default_image_extension = image_extension_list[0]
    default_video_extension = video_extension_list[0]
    default_video_codec = video_codec_list[0]
    default_blending = blending_list[1]
    default_output_path = OUTPUT_PATH_CODED
    default_input_resize_factor = str(50)
    default_output_resize_factor = str(100)
    default_VRAM_limiter = str(4)

offset_y_options = 0.0825
row1 = 0.125
row2 = row1 + offset_y_options
row3 = row2 + offset_y_options
row4 = row3 + offset_y_options
row5 = row4 + offset_y_options
row6 = row5 + offset_y_options
row7 = row6 + offset_y_options
row8 = row7 + offset_y_options
row9 = row8 + offset_y_options
row10 = row9 + offset_y_options

column_offset = 0.2
column_info1 = 0.625
column_info2 = 0.858
column_1 = 0.66
column_2 = column_1 + column_offset
column_1_5 = column_info1 + 0.08
column_1_4 = column_1_5 - 0.0127
column_3 = column_info2 + 0.08
column_2_9 = column_3 - 0.0127
column_3_5 = column_2 + 0.0355

little_textbox_width = 74
little_menu_width = 98


supported_file_extensions = [
    '.heic', '.jpg', '.jpeg', '.JPG', '.JPEG', '.png',
    '.PNG', '.webp', '.WEBP', '.bmp', '.BMP', '.tif',
    '.tiff', '.TIF', '.TIFF', '.mp4', '.MP4', '.webm',
    '.WEBM', '.mkv', '.MKV', '.flv', '.FLV', '.gif',
    '.GIF', '.m4v', ',M4V', '.avi', '.AVI', '.mov',
    '.MOV', '.qt', '.3gp', '.mpg', '.mpeg', ".vob"
]

supported_video_extensions = [
    '.mp4', '.MP4', '.webm', '.WEBM', '.mkv', '.MKV',
    '.flv', '.FLV', '.gif', '.GIF', '.m4v', ',M4V',
    '.avi', '.AVI', '.mov', '.MOV', '.qt', '.3gp',
    '.mpg', '.mpeg', ".vob"
]


# AI -------------------

class AI_upscale:

    # CLASS INIT FUNCTIONS

    def __init__(
            self,
            AI_model_name: str,
            directml_gpu: str,
            input_resize_factor: int,
            output_resize_factor: int,
            max_resolution: int
    ):

        # Passed variables
        self.AI_model_name = AI_model_name
        self.directml_gpu = directml_gpu
        self.input_resize_factor = input_resize_factor
        self.output_resize_factor = output_resize_factor
        self.max_resolution = max_resolution

        # Calculated variables
        self.AI_model_path = find_by_relative_path(
            f"AI-onnx{os_separator}{self.AI_model_name}_fp16.onnx")
        self.upscale_factor = self._get_upscale_factor()
        self.inferenceSession = None

    def _get_upscale_factor(self) -> int:
        if "x1" in self.AI_model_name:
            return 1
        elif "x2" in self.AI_model_name:
            return 2
        elif "x4" in self.AI_model_name:
            return 4

    def _load_inferenceSession(self) -> None:

        providers = ['DmlExecutionProvider']

        match self.directml_gpu:
            case 'Auto':  provider_options = [{"performance_preference": "high_performance"}]
            case 'GPU 1': provider_options = [{"device_id": "0"}]
            case 'GPU 2': provider_options = [{"device_id": "1"}]
            case 'GPU 3': provider_options = [{"device_id": "2"}]
            case 'GPU 4': provider_options = [{"device_id": "3"}]

        inference_session = InferenceSession(
            path_or_bytes=self.AI_model_path,
            providers=providers,
            provider_options=provider_options,
        )

        self.inferenceSession = inference_session

    # INTERNAL CLASS FUNCTIONS

    def get_image_mode(self, image: numpy_ndarray) -> str:
        shape = image.shape
        if len(shape) == 2:  # Grayscale: 2D array (rows, cols)
            return "Grayscale"
        # RGB: 3D array with 3 channels
        elif len(shape) == 3 and shape[2] == 3:
            return "RGB"
        # RGBA: 3D array with 4 channels
        elif len(shape) == 3 and shape[2] == 4:
            return "RGBA"

    def get_image_resolution(self, image: numpy_ndarray) -> tuple:
        height = image.shape[0]
        width = image.shape[1]

        return height, width

    def calculate_target_resolution(self, image: numpy_ndarray) -> tuple:
        height, width = self.get_image_resolution(image)
        target_height = height * self.upscale_factor
        target_width = width * self.upscale_factor

        return target_height, target_width

    def resize_with_input_factor(self, image: numpy_ndarray) -> numpy_ndarray:

        old_height, old_width = self.get_image_resolution(image)

        new_width = int(old_width * self.input_resize_factor)
        new_height = int(old_height * self.input_resize_factor)

        new_width = new_width if new_width % 2 == 0 else new_width + 1
        new_height = new_height if new_height % 2 == 0 else new_height + 1

        if self.input_resize_factor > 1:
            return opencv_resize(image, (new_width, new_height), interpolation=INTER_CUBIC)
        elif self.input_resize_factor < 1:
            return opencv_resize(image, (new_width, new_height), interpolation=INTER_AREA)
        else:
            return image

    def resize_with_output_factor(self, image: numpy_ndarray) -> numpy_ndarray:

        old_height, old_width = self.get_image_resolution(image)

        new_width = int(old_width * self.output_resize_factor)
        new_height = int(old_height * self.output_resize_factor)

        new_width = new_width if new_width % 2 == 0 else new_width + 1
        new_height = new_height if new_height % 2 == 0 else new_height + 1

        if self.output_resize_factor > 1:
            return opencv_resize(image, (new_width, new_height), interpolation=INTER_CUBIC)
        elif self.output_resize_factor < 1:
            return opencv_resize(image, (new_width, new_height), interpolation=INTER_AREA)
        else:
            return image

    # VIDEO CLASS FUNCTIONS

    def calculate_multiframes_supported_by_gpu(self, video_frame_path: str) -> int:
        resized_video_frame = self.resize_with_input_factor(
            image_read(video_frame_path))
        height, width = self.get_image_resolution(resized_video_frame)
        image_pixels = height * width
        max_supported_pixels = self.max_resolution * self.max_resolution

        frames_simultaneously = max_supported_pixels // image_pixels

        print(
            f" Frames supported simultaneously by GPU: {frames_simultaneously}")

        return frames_simultaneously

    # TILLING FUNCTIONS

    def image_need_tilling(self, image: numpy_ndarray) -> bool:
        height, width = self.get_image_resolution(image)
        image_pixels = height * width
        max_supported_pixels = self.max_resolution * self.max_resolution

        if image_pixels > max_supported_pixels:
            return True
        else:
            return False

    def add_alpha_channel(self, image: numpy_ndarray) -> numpy_ndarray:
        if image.shape[2] == 3:
            alpha = numpy_full(
                (image.shape[0], image.shape[1], 1), 255, dtype=uint8)
            image = numpy_concatenate((image, alpha), axis=2)
        return image

    def calculate_tiles_number(self, image: numpy_ndarray) -> tuple:

        height, width = self.get_image_resolution(image)

        tiles_x = (width + self.max_resolution - 1) // self.max_resolution
        tiles_y = (height + self.max_resolution - 1) // self.max_resolution

        return tiles_x, tiles_y

    def split_image_into_tiles(self, image: numpy_ndarray, tiles_x: int, tiles_y: int) -> list[numpy_ndarray]:

        img_height, img_width = self.get_image_resolution(image)

        tile_width = img_width // tiles_x
        tile_height = img_height // tiles_y

        tiles = []

        for y in range(tiles_y):
            y_start = y * tile_height
            y_end = (y + 1) * tile_height

            for x in range(tiles_x):
                x_start = x * tile_width
                x_end = (x + 1) * tile_width
                tile = image[y_start:y_end, x_start:x_end]
                tiles.append(tile)

        return tiles

    def combine_tiles_into_image(self, image: numpy_ndarray, tiles: list[numpy_ndarray], t_height: int, t_width: int, num_tiles_x: int) -> numpy_ndarray:

        match self.get_image_mode(image):
            case "Grayscale": tiled_image = numpy_zeros((t_height, t_width, 3), dtype=uint8)
            case "RGB":       tiled_image = numpy_zeros((t_height, t_width, 3), dtype=uint8)
            case "RGBA":      tiled_image = numpy_zeros((t_height, t_width, 4), dtype=uint8)

        for tile_index in range(len(tiles)):
            actual_tile = tiles[tile_index]

            tile_height, tile_width = self.get_image_resolution(actual_tile)

            row = tile_index // num_tiles_x
            col = tile_index % num_tiles_x
            y_start = row * tile_height
            y_end = y_start + tile_height
            x_start = col * tile_width
            x_end = x_start + tile_width

            match self.get_image_mode(image):
                case "Grayscale": tiled_image[y_start:y_end, x_start:x_end] = actual_tile
                case "RGB":       tiled_image[y_start:y_end, x_start:x_end] = actual_tile
                case "RGBA":      tiled_image[y_start:y_end, x_start:x_end] = self.add_alpha_channel(actual_tile)

        return tiled_image

    # AI CLASS FUNCTIONS

    def normalize_image(self, image: numpy_ndarray) -> tuple:
        range = 255
        if numpy_max(image) > 256:
            range = 65535
        normalized_image = image / range

        return normalized_image, range

    def preprocess_image(self, image: numpy_ndarray) -> numpy_ndarray:
        image = numpy_transpose(image, (2, 0, 1))
        image = numpy_expand_dims(image, axis=0)

        return image

    def onnxruntime_inference(self, image: numpy_ndarray) -> numpy_ndarray:

        # IO BINDING
        # io_binding = self.inferenceSession.io_binding()
        # io_binding.bind_cpu_input(self.inferenceSession.get_inputs()[0].name, image.astype(float16))
        # io_binding.bind_output(self.inferenceSession.get_outputs()[0].name)
        # self.inferenceSession.run_with_iobinding(io_binding)
        # onnx_output = io_binding.copy_outputs_to_cpu()[0]

        onnx_input = {self.inferenceSession.get_inputs()[0].name: image}
        onnx_output = self.inferenceSession.run(None, onnx_input)[0]

        return onnx_output

    def postprocess_output(self, onnx_output: numpy_ndarray) -> numpy_ndarray:
        onnx_output = numpy_squeeze(onnx_output, axis=0)
        onnx_output = numpy_clip(onnx_output, 0, 1)
        onnx_output = numpy_transpose(onnx_output, (1, 2, 0))

        return onnx_output

    def de_normalize_image(self, onnx_output: numpy_ndarray, max_range: int) -> numpy_ndarray:
        match max_range:
            case 255: return (onnx_output * max_range).astype(uint8)
            case 65535: return (onnx_output * max_range).round().astype(float32)

    def AI_upscale(self, image: numpy_ndarray) -> numpy_ndarray:
        image = image.astype(float32)
        image_mode = self.get_image_mode(image)
        image, range = self.normalize_image(image)

        match image_mode:
            case "RGB":
                image = self.preprocess_image(image)
                onnx_output = self.onnxruntime_inference(image)
                onnx_output = self.postprocess_output(onnx_output)
                output_image = self.de_normalize_image(onnx_output, range)

                return output_image

            case "RGBA":
                alpha = image[:, :, 3]
                image = image[:, :, :3]
                image = opencv_cvtColor(image, COLOR_BGR2RGB)

                image = image.astype(float32)
                alpha = alpha.astype(float32)

                # Image
                image = self.preprocess_image(image)
                onnx_output_image = self.onnxruntime_inference(image)
                onnx_output_image = self.postprocess_output(onnx_output_image)
                onnx_output_image = opencv_cvtColor(
                    onnx_output_image, COLOR_BGR2RGBA)

                # Alpha
                alpha = numpy_expand_dims(alpha, axis=-1)
                alpha = numpy_repeat(alpha, 3, axis=-1)
                alpha = self.preprocess_image(alpha)
                onnx_output_alpha = self.onnxruntime_inference(alpha)
                onnx_output_alpha = self.postprocess_output(onnx_output_alpha)
                onnx_output_alpha = opencv_cvtColor(
                    onnx_output_alpha, COLOR_RGB2GRAY)

                # Fusion Image + Alpha
                onnx_output_image[:, :, 3] = onnx_output_alpha
                output_image = self.de_normalize_image(
                    onnx_output_image, range)

                return output_image

            case "Grayscale":
                image = opencv_cvtColor(image, COLOR_GRAY2RGB)

                image = self.preprocess_image(image)
                onnx_output = self.onnxruntime_inference(image)
                onnx_output = self.postprocess_output(onnx_output)
                output_image = opencv_cvtColor(onnx_output, COLOR_RGB2GRAY)
                output_image = self.de_normalize_image(onnx_output, range)

                return output_image

    def AI_upscale_with_tilling(self, image: numpy_ndarray) -> numpy_ndarray:
        t_height, t_width = self.calculate_target_resolution(image)
        tiles_x, tiles_y = self.calculate_tiles_number(image)
        tiles_list = self.split_image_into_tiles(image, tiles_x, tiles_y)
        tiles_list = [self.AI_upscale(tile) for tile in tiles_list]

        return self.combine_tiles_into_image(image, tiles_list, t_height, t_width, tiles_x)

    # EXTERNAL FUNCTION

    def AI_orchestration(self, image: numpy_ndarray) -> numpy_ndarray:

        if self.inferenceSession == None:
            self._load_inferenceSession()

        resized_image = self.resize_with_input_factor(image)

        if self.image_need_tilling(resized_image):
            upscaled_image = self.AI_upscale_with_tilling(resized_image)
        else:
            upscaled_image = self.AI_upscale(resized_image)

        return self.resize_with_output_factor(upscaled_image)


# GUI utils ---------------------------

class MessageBox(CTkToplevel):

    def __init__(
            self,
            messageType: str,
            title: str,
            subtitle: str,
            default_value: str,
            option_list: list,
    ) -> None:

        super().__init__()

        self._running: bool = False

        self._messageType = messageType
        self._title = title
        self._subtitle = subtitle
        self._default_value = default_value
        self._option_list = option_list
        self._ctkwidgets_index = 0

        self.title('')
        self.lift()                          # lift window on top
        self.attributes("-topmost", True)    # stay on top
        self.protocol("WM_DELETE_WINDOW", self._on_closing)
        # create widgets with slight delay, to avoid white flickering of background
        self.after(10, self._create_widgets)
        self.resizable(False, False)
        self.grab_set()                       # make other windows not clickable

    def _ok_event(
            self,
            event=None
    ) -> None:
        self.grab_release()
        self.destroy()

    def _on_closing(
            self
    ) -> None:
        self.grab_release()
        self.destroy()

    def createEmptyLabel(self) -> CTkLabel:
        return CTkLabel(
            master=self,
            fg_color="transparent",
            width=500,
            height=17,
            text=''
        )

    def placeInfoMessageTitleSubtitle(self) -> None:

        spacingLabel1 = self.createEmptyLabel()
        spacingLabel2 = self.createEmptyLabel()

        if self._messageType == "info":
            title_subtitle_text_color = "#FFD700"  # Amarillo dorado
        elif self._messageType == "error":
            title_subtitle_text_color = "#FF3131"  # Rojo brillante

        titleLabel = CTkLabel(
            master=self,
            width=500,
            anchor='w',
            justify="left",
            fg_color="transparent",
            text_color=title_subtitle_text_color,
            font=bold22,
            text=self._title
        )

        if self._default_value != None:
            defaultLabel = CTkLabel(
                master=self,
                width=500,
                anchor='w',
                justify="left",
                fg_color="transparent",
                ttext_color="#FFD700",  # Amarillo dorado
                font=bold17,
                text=f"Default: {self._default_value}"
            )

        subtitleLabel = CTkLabel(
            master=self,
            width=500,
            anchor='w',
            justify="left",
            fg_color="transparent",
            text_color=title_subtitle_text_color,
            font=bold14,
            text=self._subtitle
        )

        spacingLabel1.grid(row=self._ctkwidgets_index, column=0,
                           columnspan=2, padx=0, pady=0, sticky="ew")

        self._ctkwidgets_index += 1
        titleLabel.grid(row=self._ctkwidgets_index, column=0,
                        columnspan=2, padx=25, pady=0, sticky="ew")

        if self._default_value != None:
            self._ctkwidgets_index += 1
            defaultLabel.grid(row=self._ctkwidgets_index, column=0,
                              columnspan=2, padx=25, pady=0, sticky="ew")

        self._ctkwidgets_index += 1
        subtitleLabel.grid(row=self._ctkwidgets_index, column=0,
                           columnspan=2, padx=25, pady=0, sticky="ew")

        self._ctkwidgets_index += 1
        spacingLabel2.grid(row=self._ctkwidgets_index, column=0,
                           columnspan=2, padx=0, pady=0, sticky="ew")

    def placeInfoMessageOptionsText(self) -> None:

        for option_text in self._option_list:
            optionLabel = CTkLabel(
                master=self,
                width=600,
                height=45,
                anchor='w',
                justify="left",
                text_color=text_color,
                fg_color="#282828",
                bg_color="transparent",
                font=bold13,
                text=option_text,
                corner_radius=10,
            )

            self._ctkwidgets_index += 1
            optionLabel.grid(row=self._ctkwidgets_index, column=0,
                             columnspan=2, padx=25, pady=4, sticky="ew")

        spacingLabel3 = self.createEmptyLabel()

        self._ctkwidgets_index += 1
        spacingLabel3.grid(row=self._ctkwidgets_index, column=0,
                           columnspan=2, padx=0, pady=0, sticky="ew")

    def placeInfoMessageOkButton(
            self
    ) -> None:

        ok_button = CTkButton(
            master=self,
            command=self._ok_event,
            text='OK',
            width=125,
            font=bold11,
            border_width=1,
            fg_color="#282828",
            text_color="#E0E0E0",
            border_color="#0096FF"
        )

        self._ctkwidgets_index += 1
        ok_button.grid(row=self._ctkwidgets_index, column=1,
                       columnspan=1, padx=(10, 20), pady=(10, 20), sticky="e")

    def _create_widgets(
            self
    ) -> None:

        self.grid_columnconfigure((0, 1), weight=1)
        self.rowconfigure(0, weight=1)

        self.placeInfoMessageTitleSubtitle()
        self.placeInfoMessageOptionsText()
        self.placeInfoMessageOkButton()


class FileWidget(CTkScrollableFrame):

    def __init__(
            self,
            master,
            selected_file_list,
            upscale_factor=1,
            input_resize_factor=0,
            output_resize_factor=0,
            **kwargs
    ) -> None:

        super().__init__(master, **kwargs)
        self.grid_columnconfigure(0, weight=1)

        self.file_list = selected_file_list
        self.upscale_factor = upscale_factor
        self.input_resize_factor = input_resize_factor
        self.output_resize_factor = output_resize_factor

        self.index_row = 1
        self.ui_components = []
        self._create_widgets()

    def _destroy_(self) -> None:
        self.file_list = []
        self.destroy()
        place_loadFile_section()

    def _create_widgets(self) -> None:
        self.add_clean_button()
        for file_path in self.file_list:
            file_name_label, file_info_label = self.add_file_information(
                file_path)
            self.ui_components.append(file_name_label)
            self.ui_components.append(file_info_label)

    def add_file_information(self, file_path) -> tuple:
        infos, icon = self.extract_file_info(file_path)

        # File name
        file_name_label = CTkLabel(
            self,
            text=os_path_basename(file_path),
            font=bold14,
            text_color=text_color,
            compound="left",
            anchor="w",
            padx=10,
            pady=5,
            justify="left",
        )
        file_name_label.grid(
            row=self.index_row,
            column=0,
            pady=(0, 2),
            padx=(3, 3),
            sticky="w"
        )

        # File infos and icon
        file_info_label = CTkLabel(
            self,
            text=infos,
            image=icon,
            font=bold12,
            text_color=text_color,
            compound="left",
            anchor="w",
            padx=10,
            pady=5,
            justify="left",
        )
        file_info_label.grid(
            row=self.index_row + 1,
            column=0,
            pady=(0, 15),
            padx=(3, 3),
            sticky="w"
        )

        self.index_row += 2

        return file_name_label, file_info_label

    def add_clean_button(self) -> None:

        button = CTkButton(
            master=self,
            command=self._destroy_,
            text="CLEAN",
            image=clear_icon,
            width=90,
            height=28,
            font=bold11,
            border_width=1,
            corner_radius=1,
            fg_color="#282828",
            text_color="#E0E0E0",
            border_color="#0096FF"
        )

        button.grid(row=0, column=2, pady=(7, 7), padx=(0, 7))

    @cache
    def extract_file_icon(self, file_path) -> CTkImage:
        max_size = 60

        if check_if_file_is_video(file_path):
            video_cap = opencv_VideoCapture(file_path)
            _, frame = video_cap.read()
            source_icon = opencv_cvtColor(frame, COLOR_BGR2RGB)
            video_cap.release()
        else:
            source_icon = opencv_cvtColor(image_read(file_path), COLOR_BGR2RGB)

        ratio = min(
            max_size / source_icon.shape[0], max_size / source_icon.shape[1])
        new_width = int(source_icon.shape[1] * ratio)
        new_height = int(source_icon.shape[0] * ratio)
        source_icon = opencv_resize(source_icon, (new_width, new_height))
        ctk_icon = CTkImage(pillow_image_fromarray(
            source_icon, mode="RGB"), size=(new_width, new_height))

        return ctk_icon

    def extract_file_info(self, file_path) -> tuple:

        if check_if_file_is_video(file_path):
            cap = opencv_VideoCapture(file_path)
            width = round(cap.get(CAP_PROP_FRAME_WIDTH))
            height = round(cap.get(CAP_PROP_FRAME_HEIGHT))
            num_frames = int(cap.get(CAP_PROP_FRAME_COUNT))
            frame_rate = cap.get(CAP_PROP_FPS)
            duration = num_frames/frame_rate
            minutes = int(duration/60)
            seconds = duration % 60
            cap.release()

            file_icon = self.extract_file_icon(file_path)
            file_infos = f"{minutes}m:{round(seconds)}s • {num_frames}frames • {width}x{height} \n"

            if self.input_resize_factor != 0 and self.output_resize_factor != 0 and self.upscale_factor != 0:
                input_resized_height = int(
                    height * (self.input_resize_factor/100))
                input_resized_width = int(
                    width * (self.input_resize_factor/100))

                upscaled_height = int(
                    input_resized_height * self.upscale_factor)
                upscaled_width = int(input_resized_width * self.upscale_factor)

                output_resized_height = int(
                    upscaled_height * (self.output_resize_factor/100))
                output_resized_width = int(
                    upscaled_width * (self.output_resize_factor/100))

                file_infos += (
                    f"AI input ({self.input_resize_factor}%) ➜ {input_resized_width}x{input_resized_height} \n"
                    f"AI output (x{self.upscale_factor}) ➜ {upscaled_width}x{upscaled_height} \n"
                    f"Video output ({self.output_resize_factor}%) ➜ {output_resized_width}x{output_resized_height}"
                )

        else:
            height, width = get_image_resolution(image_read(file_path))
            file_icon = self.extract_file_icon(file_path)

            file_infos = f"{width}x{height}\n"

            if self.input_resize_factor != 0 and self.output_resize_factor != 0 and self.upscale_factor != 0:
                input_resized_height = int(
                    height * (self.input_resize_factor/100))
                input_resized_width = int(
                    width * (self.input_resize_factor/100))

                upscaled_height = int(
                    input_resized_height * self.upscale_factor)
                upscaled_width = int(input_resized_width * self.upscale_factor)

                output_resized_height = int(
                    upscaled_height * (self.output_resize_factor/100))
                output_resized_width = int(
                    upscaled_width * (self.output_resize_factor/100))

                file_infos += (
                    f"AI input ({self.input_resize_factor}%) ➜ {input_resized_width}x{input_resized_height} \n"
                    f"AI output (x{self.upscale_factor}) ➜ {upscaled_width}x{upscaled_height} \n"
                    f"Image output ({self.output_resize_factor}%) ➜ {output_resized_width}x{output_resized_height}"
                )

        return file_infos, file_icon

    # EXTERNAL FUNCTIONS

    def clean_file_list(self) -> None:
        self.index_row = 1
        for ui_component in self.ui_components:
            ui_component.grid_forget()

    def get_selected_file_list(self) -> list:
        return self.file_list

    def set_upscale_factor(self, upscale_factor) -> None:
        self.upscale_factor = upscale_factor

    def set_input_resize_factor(self, input_resize_factor) -> None:
        self.input_resize_factor = input_resize_factor

    def set_output_resize_factor(self, output_resize_factor) -> None:
        self.output_resize_factor = output_resize_factor


def get_values_for_file_widget() -> tuple:
    # Upscale factor
    upscale_factor = get_upscale_factor()

    # Input resolution %
    try:
        input_resize_factor = int(
            float(str(selected_input_resize_factor.get())))
    except:
        input_resize_factor = 0

    # Output resolution %
    try:
        output_resize_factor = int(
            float(str(selected_output_resize_factor.get())))
    except:
        output_resize_factor = 0

    return upscale_factor, input_resize_factor, output_resize_factor


def update_file_widget(a, b, c) -> None:
    try:
        global file_widget
        file_widget
    except:
        return

    upscale_factor, input_resize_factor, output_resize_factor = get_values_for_file_widget()

    file_widget.clean_file_list()
    file_widget.set_upscale_factor(upscale_factor)
    file_widget.set_input_resize_factor(input_resize_factor)
    file_widget.set_output_resize_factor(output_resize_factor)
    file_widget._create_widgets()


def create_option_background():
    return CTkFrame(
        master=window,
        bg_color=background_color,
        fg_color=widget_background_color,
        height=46,
        corner_radius=10
    )


def create_info_button(command: Callable, text: str, width: int = 200) -> CTkFrame:

    frame = CTkFrame(
        master=window, fg_color=widget_background_color, height=25)

    button = CTkButton(
        master=frame,
        command=command,
        font=bold12,
        text="?",
        border_color="#0096FF",
        border_width=1,
        fg_color=widget_background_color,
        hover_color=background_color,
        width=23,
        height=15,
        corner_radius=1
    )
    button.grid(row=0, column=0, padx=(0, 7), pady=2, sticky="w")

    label = CTkLabel(
        master=frame,
        text=text,
        width=width,
        height=22,
        fg_color="transparent",
        bg_color=widget_background_color,
        text_color=text_color,
        font=bold13,
        anchor="w"
    )
    label.grid(row=0, column=1, sticky="w")

    frame.grid_propagate(False)
    frame.grid_columnconfigure(1, weight=1)

    return frame


def create_option_menu(
    command: Callable,
    values: list,
    default_value: str,
    border_color: str = "#404040",
    border_width: int = 1,
    width: int = 159
) -> CTkFrame:

    width = width
    height = 28

    total_width = (width + 2 * border_width)
    total_height = (height + 2 * border_width)

    frame = CTkFrame(
        master=window,
        fg_color=border_color,
        width=total_width,
        height=total_height,
        border_width=0,
        corner_radius=1,
    )

    option_menu = CTkOptionMenu(
        master=frame,
        command=command,
        values=values,
        width=width,
        height=height,
        corner_radius=0,
        dropdown_font=bold12,
        font=bold11,
        anchor="center",
        text_color=text_color,
        fg_color=background_color,
        button_color=background_color,
        button_hover_color=background_color,
        dropdown_fg_color=background_color
    )

    option_menu.place(
        x=(total_width - width) / 2,
        y=(total_height - height) / 2
    )
    option_menu.set(default_value)
    return frame


def create_text_box(textvariable: StringVar, width: int) -> CTkEntry:
    return CTkEntry(
        master=window,
        textvariable=textvariable,
        corner_radius=1,
        width=width,
        height=28,
        font=bold11,
        justify="center",
        text_color=text_color,
        fg_color="#000000",
        border_width=1,
        border_color="#404040",
    )


def create_text_box_output_path(textvariable: StringVar) -> CTkEntry:
    return CTkEntry(
        master=window,
        textvariable=textvariable,
        corner_radius=1,
        width=250,
        height=28,
        font=bold11,
        justify="center",
        text_color=text_color,
        fg_color="#000000",
        border_width=1,
        border_color="#404040",
        state=DISABLED
    )


def create_active_button(
        command: Callable,
        text: str,
        icon: CTkImage = None,
        width: int = 140,
        height: int = 30,
        border_color: str = "#0096FF"
) -> CTkButton:

    return CTkButton(
        master=window,
        command=command,
        text=text,
        image=icon,
        width=width,
        height=height,
        font=bold11,
        border_width=1,
        corner_radius=1,
        fg_color="#282828",
        text_color="#E0E0E0",
        border_color=border_color
    )


# File Utils functions ------------------------

def create_dir(name_dir: str) -> None:
    if os_path_exists(name_dir):
        remove_directory(name_dir)
    if not os_path_exists(name_dir):
        os_makedirs(name_dir, mode=0o777)


def stop_thread() -> None: stop = 1 + "x"


def image_read(file_path: str) -> numpy_ndarray:
    with open(file_path, 'rb') as file:
        return opencv_imdecode(numpy_ascontiguousarray(numpy_frombuffer(file.read(), uint8)), IMREAD_UNCHANGED)


def image_write(file_path: str, file_data: numpy_ndarray, file_extension: str = ".jpg") -> None:
    opencv_imencode(file_extension, file_data)[1].tofile(file_path)


def copy_file_metadata(original_file_path: str, upscaled_file_path: str) -> None:

    exiftool_cmd = [
        EXIFTOOL_EXE_PATH,
        '-fast',
        '-TagsFromFile',
        original_file_path,
        '-overwrite_original',
        '-all:all',
        '-unsafe',
        '-largetags',
        upscaled_file_path
    ]

    try:
        subprocess_run(exiftool_cmd, check=True, shell="False")
    except:
        pass


def prepare_output_image_filename(
        image_path: str,
        selected_output_path: str,
        selected_AI_model: str,
        input_resize_factor: int,
        output_resize_factor: int,
        selected_image_extension: str,
        selected_blending_factor: float
) -> str:

    if selected_output_path == OUTPUT_PATH_CODED:
        file_path_no_extension, _ = os_path_splitext(image_path)
        output_path = file_path_no_extension
    else:
        file_name = os_path_basename(image_path)
        output_path = f"{selected_output_path}{os_separator}{file_name}"

    # Selected AI model
    to_append = f"_{selected_AI_model}"

    # Selected input resize
    to_append += f"_InputR-{str(int(input_resize_factor * 100))}"

    # Selected output resize
    to_append += f"_OutputR-{str(int(output_resize_factor * 100))}"

    # Selected intepolation
    match selected_blending_factor:
        case 0.3:
            to_append += "_Blending-Low"
        case 0.5:
            to_append += "_Blending-Medium"
        case 0.7:
            to_append += "_Blending-High"

    # Selected image extension
    to_append += f"{selected_image_extension}"

    output_path += to_append

    return output_path


def prepare_output_video_frame_filename(
        frame_path: str,
        selected_AI_model: str,
        input_resize_factor: int,
        output_resize_factor: int,
        selected_blending_factor: float
) -> str:

    file_path_no_extension, _ = os_path_splitext(frame_path)
    output_path = file_path_no_extension

    # Selected AI model
    to_append = f"_{selected_AI_model}"

    # Selected input resize
    to_append += f"_InputR-{str(int(input_resize_factor * 100))}"

    # Selected output resize
    to_append += f"_OutputR-{str(int(output_resize_factor * 100))}"

    # Selected intepolation
    match selected_blending_factor:
        case 0.3:
            to_append += "_Blending-Low"
        case 0.5:
            to_append += "_Blending-Medium"
        case 0.7:
            to_append += "_Blending-High"

    # Selected image extension
    to_append += f".jpg"

    output_path += to_append

    return output_path


def prepare_output_video_filename(
        video_path: str,
        selected_output_path: str,
        selected_AI_model: str,
        input_resize_factor: int,
        output_resize_factor: int,
        selected_video_extension: str,
        selected_blending_factor: float
) -> str:

    if ".mp4" in selected_video_extension:
        selected_video_extension = ".mp4"
    elif ".avi" in selected_video_extension:
        selected_video_extension = ".avi"

    if selected_output_path == OUTPUT_PATH_CODED:
        file_path_no_extension, _ = os_path_splitext(video_path)
        output_path = file_path_no_extension
    else:
        file_name = os_path_basename(video_path)
        output_path = f"{selected_output_path}{os_separator}{file_name}"

    # Selected AI model
    to_append = f"_{selected_AI_model}"

    # Selected input resize
    to_append += f"_InputR-{str(int(input_resize_factor * 100))}"

    # Selected output resize
    to_append += f"_OutputR-{str(int(output_resize_factor * 100))}"

    # Selected intepolation
    match selected_blending_factor:
        case 0.3:
            to_append += "_Blending-Low"
        case 0.5:
            to_append += "_Blending-Medium"
        case 0.7:
            to_append += "_Blending-High"

    # Selected video extension
    to_append += f"{selected_video_extension}"

    output_path += to_append

    return output_path


def prepare_output_video_directory_name(
        video_path: str,
        selected_output_path: str,
        selected_AI_model: str,
        input_resize_factor: int,
        output_resize_factor: int,
        selected_blending_factor: float
) -> str:

    if selected_output_path == OUTPUT_PATH_CODED:
        file_path_no_extension, _ = os_path_splitext(video_path)
        output_path = file_path_no_extension
    else:
        file_name = os_path_basename(video_path)
        output_path = f"{selected_output_path}{os_separator}{file_name}"

    # Selected AI model
    to_append = f"_{selected_AI_model}"

    # Selected input resize
    to_append += f"_InputR-{str(int(input_resize_factor * 100))}"

    # Selected output resize
    to_append += f"_OutputR-{str(int(output_resize_factor * 100))}"

    # Selected intepolation
    match selected_blending_factor:
        case 0.3:
            to_append += "_Blending-Low"
        case 0.5:
            to_append += "_Blending-Medium"
        case 0.7:
            to_append += "_Blending-High"

    output_path += to_append

    return output_path


# Image/video Utils functions ------------------------

def get_video_fps(video_path: str) -> float:
    video_capture = opencv_VideoCapture(video_path)
    frame_rate = video_capture.get(CAP_PROP_FPS)
    video_capture.release()
    return frame_rate


def get_image_resolution(image: numpy_ndarray) -> tuple:
    height = image.shape[0]
    width = image.shape[1]

    return height, width


def save_extracted_frames(
        extracted_frames_paths: list[str],
        extracted_frames: list[numpy_ndarray],
        cpu_number: int
) -> None:

    with ThreadPool(cpu_number) as pool:
        pool.starmap(image_write, zip(
            extracted_frames_paths, extracted_frames))


def extract_video_frames(
    process_status_q: multiprocessing_Queue,
    file_number: int,
    target_directory: str,
    video_path: str,
    cpu_number: int,
    half_frames: bool = False
) -> list[str]:

    create_dir(target_directory)

    # Video frame extraction
    frames_number_to_save = cpu_number * ECTRACTION_FRAMES_FOR_CPU
    video_capture = opencv_VideoCapture(video_path)
    frame_count = int(video_capture.get(CAP_PROP_FRAME_COUNT))

    extracted_frames = []
    extracted_frames_paths = []
    video_frames_list = []

    frame_index = 0

    for frame_number in range(frame_count):
        success, frame = video_capture.read()
        if not success:
            break

        # Estrarre solo i frame dispari (1, 3, 5, ...)
        if half_frames and frame_index % 2 == 0:
            frame_index += 1
            continue

        frame_path = f"{target_directory}{os_separator}frame_{frame_number:03d}.jpg"
        extracted_frames.append(frame)
        extracted_frames_paths.append(frame_path)
        video_frames_list.append(frame_path)

        if len(extracted_frames) == frames_number_to_save:
            percentage_extraction = (frame_number / frame_count) * 100

            write_process_status(
                process_status_q, f"{file_number}. Extracting video frames ({round(percentage_extraction, 2)}%)")
            save_extracted_frames(extracted_frames_paths,
                                  extracted_frames, cpu_number)
            extracted_frames = []
            extracted_frames_paths = []

        frame_index += 1

    video_capture.release()

    if len(extracted_frames) > 0:
        save_extracted_frames(extracted_frames_paths,
                              extracted_frames, cpu_number)

    return video_frames_list


def video_encoding(
        process_status_q: multiprocessing_Queue,
        video_path: str,
        video_output_path: str,
        upscaled_frame_paths: list[str],
        selected_video_codec: str,
) -> None:

    if "x264" in selected_video_codec:
        codec = "libx264"
    elif "x265" in selected_video_codec:
        codec = "libx265"
    else:
        codec = selected_video_codec

    txt_path = f"{os_path_splitext(video_output_path)[0]}.txt"
    no_audio_path = f"{os_path_splitext(video_output_path)[0]}_no_audio{os_path_splitext(video_output_path)[1]}"
    video_fps = str(get_video_fps(video_path))

    # Cleaning files from previous encoding
    if os_path_exists(no_audio_path):
        os_remove(no_audio_path)
    if os_path_exists(txt_path):
        os_remove(txt_path)

    # Create a file .txt with all upscaled video frames paths || this file is essential
    with os_fdopen(os_open(txt_path, O_WRONLY | O_CREAT, 0o777), 'w', encoding="utf-8") as txt:
        for frame_path in upscaled_frame_paths:
            txt.write(f"file '{frame_path}' \n")

    # Create the upscaled video without audio
    print(f"[FFMPEG] ENCODING ({codec})")
    try:
        encoding_command = [
            FFMPEG_EXE_PATH,
            "-y",
            "-loglevel",    "error",
            "-f",           "concat",
            "-safe",        "0",
            "-r",           video_fps,
            "-i",           txt_path,
            "-c:v",         codec,
            "-vf",          "scale=in_range=full:out_range=limited,format=yuv420p",
            "-color_range", "tv",
            "-b:v",         "12000k",
            no_audio_path
        ]
        subprocess_run(encoding_command, check=True, shell="False")
        if os_path_exists(txt_path):
            os_remove(txt_path)

    except:
        write_process_status(
            process_status_q,
            f"{ERROR_STATUS}An error occurred during video encoding. \n Have you selected a codec compatible with your GPU? If the issue persists, try selecting 'x264'."
        )

    # Copy the audio from original video
    print("[FFMPEG] AUDIO PASSTHROUGH")
    audio_passthrough_command = [
        FFMPEG_EXE_PATH,
        "-y",
        "-loglevel", "error",
        "-i",        video_path,
        "-i",        no_audio_path,
        "-c:v",      "copy",
        "-map",      "1:v:0",
        "-map",      "0:a?",
        "-c:a",      "copy",
        video_output_path
    ]
    try:
        subprocess_run(audio_passthrough_command, check=True, shell="False")
        if os_path_exists(no_audio_path):
            os_remove(no_audio_path)
    except:
        pass


def check_video_upscaling_resume(
        target_directory: str,
        selected_AI_model: str
) -> bool:

    if os_path_exists(target_directory):
        directory_files = os_listdir(target_directory)
        upscaled_frames_path = [
            file for file in directory_files if selected_AI_model in file]

        if len(upscaled_frames_path) > 1:
            return True
        else:
            return False
    else:
        return False


def get_video_frames_for_upscaling_resume(
        target_directory: str,
        selected_AI_model: str,
) -> list[str]:

    # Only file names
    directory_files = os_listdir(target_directory)
    original_frames_path = [
        file for file in directory_files if file.endswith('.jpg')]
    original_frames_path = [
        file for file in original_frames_path if selected_AI_model not in file]

    # Adding the complete path to file
    original_frames_path = natsorted(
        [os_path_join(target_directory, file) for file in original_frames_path])

    return original_frames_path


def calculate_time_to_complete_video(
        time_for_frame: float,
        remaining_frames: int,
) -> str:

    remaining_time = time_for_frame * remaining_frames

    hours_left = remaining_time // 3600
    minutes_left = (remaining_time % 3600) // 60
    seconds_left = round((remaining_time % 3600) % 60)

    time_left = ""

    if int(hours_left) > 0:
        time_left = f"{int(hours_left):02d}h"

    if int(minutes_left) > 0:
        time_left = f"{time_left}{int(minutes_left):02d}m"

    if seconds_left > 0:
        time_left = f"{time_left}{seconds_left:02d}s"

    return time_left


def blend_images_and_save(
        target_path: str,
        starting_image: numpy_ndarray,
        upscaled_image: numpy_ndarray,
        starting_image_importance: float,
        file_extension: str = ".jpg"
) -> None:

    def add_alpha_channel(image: numpy_ndarray) -> numpy_ndarray:
        if image.shape[2] == 3:
            alpha = numpy_full(
                (image.shape[0], image.shape[1], 1), 255, dtype=uint8)
            image = numpy_concatenate((image, alpha), axis=2)
        return image

    def get_image_mode(image: numpy_ndarray) -> str:
        shape = image.shape
        if len(shape) == 2:
            return "Grayscale"
        elif len(shape) == 3 and shape[2] == 3:
            return "RGB"
        elif len(shape) == 3 and shape[2] == 4:
            return "RGBA"

    upscaled_image_importance = 1 - starting_image_importance
    starting_height, starting_width = get_image_resolution(starting_image)
    target_height, target_width = get_image_resolution(upscaled_image)

    starting_resolution = starting_height + starting_width
    target_resolution = target_height + target_width

    if starting_resolution > target_resolution:
        starting_image = opencv_resize(
            starting_image, (target_width, target_height), INTER_AREA)
    else:
        starting_image = opencv_resize(
            starting_image, (target_width, target_height))

    try:
        if get_image_mode(starting_image) == "RGBA":
            starting_image = add_alpha_channel(starting_image)
            upscaled_image = add_alpha_channel(upscaled_image)

        interpolated_image = opencv_addWeighted(
            starting_image, starting_image_importance, upscaled_image, upscaled_image_importance, 0)
        image_write(target_path, interpolated_image, file_extension)

    except:
        image_write(target_path, upscaled_image, file_extension)


# Core functions ------------------------

def check_upscale_steps() -> None:
    sleep(1)

    try:
        while True:
            actual_step = read_process_status()

            if actual_step == COMPLETED_STATUS:
                info_message.set(f"All files completed! :)")
                stop_upscale_process()
                stop_thread()

            elif actual_step == STOP_STATUS:
                info_message.set(f"Upscaling stopped")
                stop_upscale_process()
                stop_thread()

            elif ERROR_STATUS in actual_step:
                info_message.set(f"Error while upscaling :(")
                error_to_show = actual_step.replace(ERROR_STATUS, "")
                show_error_message(error_to_show.strip())
                stop_thread()

            else:
                info_message.set(actual_step)

            sleep(1)
    except:
        place_upscale_button()


def read_process_status() -> str:
    return process_status_q.get()


def write_process_status(process_status_q: multiprocessing_Queue, step: str) -> None:

    print(f"{step}")
    while not process_status_q.empty():
        process_status_q.get()
    process_status_q.put(f"{step}")


def stop_upscale_process() -> None:
    global process_upscale_orchestrator
    try:
        process_upscale_orchestrator
    except:
        pass
    else:
        process_upscale_orchestrator.kill()


def stop_button_command() -> None:
    stop_upscale_process()
    write_process_status(process_status_q, f"{STOP_STATUS}")


def upscale_button_command() -> None:
    global selected_file_list
    global selected_AI_model
    global selected_gpu
    global selected_keep_frames
    global selected_AI_multithreading
    global selected_blending_factor
    global selected_image_extension
    global selected_video_extension
    global selected_video_codec
    global tiles_resolution
    global input_resize_factor
    global output_resize_factor

    global process_upscale_orchestrator

    if user_input_checks():
        info_message.set("Loading")

        cpu_number = int(os_cpu_count()/2)

        print("=" * 50)
        print("> Starting upscale:")
        print(f"  Files to upscale: {len(selected_file_list)}")
        print(f"  Output path: {(selected_output_path.get())}")
        print(f"  Selected AI model: {selected_AI_model}")
        print(f"  Selected GPU: {selected_gpu}")
        print(f"  AI multithreading: {selected_AI_multithreading}")
        print(f"  Blending factor: {selected_blending_factor}")
        print(f"  Selected image output extension: {selected_image_extension}")
        print(f"  Selected video output extension: {selected_video_extension}")
        print(f"  Selected video output codec: {selected_video_codec}")
        print(
            f"  Tiles resolution for selected GPU VRAM: {tiles_resolution}x{tiles_resolution}px")
        print(f"  Input resize factor: {int(input_resize_factor * 100)}%")
        print(f"  Output resize factor: {int(output_resize_factor * 100)}%")
        print(f"  Cpu number: {cpu_number}")
        print(f"  Save frames: {selected_keep_frames}")
        print("=" * 50)

        place_stop_button()

        process_upscale_orchestrator = Process(
            target=upscale_orchestrator,
            args=(
                process_status_q,
                selected_file_list,
                selected_output_path.get(),
                selected_AI_model,
                selected_AI_multithreading,
                input_resize_factor,
                output_resize_factor,
                selected_gpu,
                tiles_resolution,
                selected_blending_factor,
                selected_keep_frames,
                selected_image_extension,
                selected_video_extension,
                selected_video_codec,
                cpu_number,
            )
        )
        process_upscale_orchestrator.start()

        thread_wait = Thread(target=check_upscale_steps)
        thread_wait.start()


# ORCHESTRATOR

def upscale_orchestrator(
        process_status_q: multiprocessing_Queue,
        selected_file_list: list,
        selected_output_path: str,
        selected_AI_model: str,
        selected_AI_multithreading: int,
        input_resize_factor: int,
        output_resize_factor: int,
        selected_gpu: str,
        tiles_resolution: int,
        selected_blending_factor: float,
        selected_keep_frames: bool,
        selected_image_extension: str,
        selected_video_extension: str,
        selected_video_codec: str,
        cpu_number: int,
) -> None:

    try:
        write_process_status(process_status_q, f"Loading AI model")

        AI_upscale_instance_list = [
            AI_upscale(selected_AI_model, selected_gpu,
                       input_resize_factor, output_resize_factor, tiles_resolution)
            for _ in range(selected_AI_multithreading)
        ]

        how_many_files = len(selected_file_list)
        for file_number in range(how_many_files):
            file_path = selected_file_list[file_number]
            file_number = file_number + 1

            if check_if_file_is_video(file_path):
                upscale_video(
                    process_status_q,
                    file_path,
                    file_number,
                    selected_output_path,
                    AI_upscale_instance_list,
                    selected_AI_model,
                    input_resize_factor,
                    output_resize_factor,
                    cpu_number,
                    selected_video_extension,
                    selected_blending_factor,
                    selected_AI_multithreading,
                    selected_keep_frames,
                    selected_video_codec
                )
            else:
                upscale_image(
                    process_status_q,
                    file_path,
                    file_number,
                    selected_output_path,
                    AI_upscale_instance_list[0],
                    selected_AI_model,
                    selected_image_extension,
                    input_resize_factor,
                    output_resize_factor,
                    selected_blending_factor
                )

        write_process_status(process_status_q, f"{COMPLETED_STATUS}")

    except Exception as exception:
        error_message = str(exception)

        if "cannot convert float NaN to integer" in error_message:
            write_process_status(
                process_status_q,
                f"{ERROR_STATUS}An error occurred during video upscaling, likely due to a GPU driver timeout.\n"
                "Restart the process without deleting the upscaled frames to resume and complete the upscaling."
            )
        else:
            write_process_status(
                process_status_q, f"{ERROR_STATUS} {error_message}")

# IMAGES


def upscale_image(
        process_status_q: multiprocessing_Queue,
        image_path: str,
        file_number: int,
        selected_output_path: str,
        AI_instance: AI_upscale,
        selected_AI_model: str,
        selected_image_extension: str,
        input_resize_factor: int,
        output_resize_factor: int,
        selected_blending_factor: float
) -> None:

    starting_image = image_read(image_path)
    upscaled_image_path = prepare_output_image_filename(
        image_path, selected_output_path, selected_AI_model, input_resize_factor, output_resize_factor, selected_image_extension, selected_blending_factor)

    write_process_status(process_status_q, f"{file_number}. Upscaling image")
    upscaled_image = AI_instance.AI_orchestration(starting_image)

    if selected_blending_factor > 0:
        blend_images_and_save(
            upscaled_image_path,
            starting_image,
            upscaled_image,
            selected_blending_factor,
            selected_image_extension
        )
    else:
        image_write(upscaled_image_path, upscaled_image,
                    selected_image_extension)

    copy_file_metadata(image_path, upscaled_image_path)

# VIDEOS


def upscale_video(
        process_status_q: multiprocessing_Queue,
        video_path: str,
        file_number: int,
        selected_output_path: str,
        AI_upscale_instance_list: list[AI_upscale],
        selected_AI_model: str,
        input_resize_factor: int,
        output_resize_factor: int,
        cpu_number: int,
        selected_video_extension: str,
        selected_blending_factor: float,
        selected_AI_multithreading: int,
        selected_keep_frames: bool,
        selected_video_codec: str
) -> None:

    # Internal functions

    def update_process_status_videos(
            process_status_q: multiprocessing_Queue,
            file_number: int,
    ) -> None:

        global global_upscaled_frames_paths
        global global_processing_times_list

        # Remaining frames
        total_frames_counter = len(global_upscaled_frames_paths)
        frames_already_upscaled_counter = len(
            [path for path in global_upscaled_frames_paths if os_path_exists(path)])
        frames_to_upscale_counter = len(
            [path for path in global_upscaled_frames_paths if not os_path_exists(path)])

        try:
            average_processing_time = numpy_mean(global_processing_times_list)
        except:
            average_processing_time = 0.0

        remaining_frames = frames_to_upscale_counter
        remaining_time = calculate_time_to_complete_video(
            average_processing_time, remaining_frames)
        if remaining_time != "":
            percent_complete = (
                frames_already_upscaled_counter / total_frames_counter) * 100
            write_process_status(
                process_status_q, f"{file_number}. Upscaling video {percent_complete:.2f}% ({remaining_time})")

    def save_multiple_upscaled_frame_async(
        starting_frames_to_save: list[numpy_ndarray],
        upscaled_frames_to_save: list[numpy_ndarray],
        upscaled_frame_paths_to_save: list[str],
        selected_blending_factor: float
    ) -> None:

        for frame_index, _ in enumerate(upscaled_frames_to_save):
            starting_frame = starting_frames_to_save[frame_index]
            upscaled_frame = upscaled_frames_to_save[frame_index]
            upscaled_frame_path = upscaled_frame_paths_to_save[frame_index]

            if selected_blending_factor > 0:
                blend_images_and_save(
                    upscaled_frame_path, starting_frame, upscaled_frame, selected_blending_factor)
            else:
                image_write(upscaled_frame_path, upscaled_frame)

    def save_frames_on_disk(
        starting_frames_to_save: list[numpy_ndarray],
        upscaled_frames_to_save: list[numpy_ndarray],
        upscaled_frame_paths_to_save: list[str],
        selected_blending_factor: float
    ) -> None:

        Thread(
            target=save_multiple_upscaled_frame_async,
            args=(
                starting_frames_to_save,
                upscaled_frames_to_save,
                upscaled_frame_paths_to_save,
                selected_blending_factor
            )
        ).start()

    def upscale_video_frames_async(
            process_status_q: multiprocessing_Queue,
            file_number: int,
            threads_number: int,
            AI_instance: AI_upscale,
            extracted_frames_paths: list[str],
            upscaled_frame_paths: list[str],
            selected_blending_factor: float,
    ) -> None:

        global global_processing_times_list
        global global_can_i_update_status

        starting_frames_to_save = []
        upscaled_frames_to_save = []
        upscaled_frame_paths_to_save = []

        for frame_index in range(len(extracted_frames_paths)):
            frame_path = extracted_frames_paths[frame_index]
            upscaled_frame_path = upscaled_frame_paths[frame_index]
            already_upscaled = os_path_exists(upscaled_frame_path)

            if already_upscaled == False:
                start_timer = timer()

                # Upscale frame
                starting_frame = image_read(frame_path)
                upscaled_frame = AI_instance.AI_orchestration(starting_frame)

                # Adding frames in list to save
                starting_frames_to_save.append(starting_frame)
                upscaled_frames_to_save.append(upscaled_frame)
                upscaled_frame_paths_to_save.append(upscaled_frame_path)

                # Calculate processing time and update process status
                end_timer = timer()
                processing_time = (end_timer - start_timer)/threads_number
                global_processing_times_list.append(processing_time)

                if (frame_index + 1) % MULTIPLE_FRAMES_TO_SAVE == 0:
                    # Save frames present in RAM on disk
                    save_frames_on_disk(starting_frames_to_save, upscaled_frames_to_save,
                                        upscaled_frame_paths_to_save, selected_blending_factor)
                    starting_frames_to_save = []
                    upscaled_frames_to_save = []
                    upscaled_frame_paths_to_save = []

                    global_can_i_update_status = not global_can_i_update_status
                    if global_can_i_update_status:
                        update_process_status_videos(
                            process_status_q, file_number)
                        if len(global_processing_times_list) >= 100:
                            global_processing_times_list = []

        if len(upscaled_frame_paths_to_save) > 0:
            # Save frames still present in RAM on disk
            save_frames_on_disk(starting_frames_to_save, upscaled_frames_to_save,
                                upscaled_frame_paths_to_save, selected_blending_factor)
            starting_frames_to_save = []
            upscaled_frames_to_save = []
            upscaled_frame_paths_to_save = []

    def upscale_video_frames(
            process_status_q: multiprocessing_Queue,
            file_number: int,
            AI_upscale_instance_list: list[AI_upscale],
            extracted_frames_paths: list[str],
            upscaled_frame_paths: list[str],
            threads_number: int,
            selected_blending_factor: float,
    ) -> None:

        global global_upscaled_frames_paths
        global global_processing_times_list
        global global_can_i_update_status

        global_upscaled_frames_paths = upscaled_frame_paths
        global_processing_times_list = []
        global_can_i_update_status = False

        chunk_size = len(extracted_frames_paths) // threads_number
        extracted_frame_list_chunks = [extracted_frames_paths[i:i + chunk_size]
                                       for i in range(0, len(extracted_frames_paths), chunk_size)]
        upscaled_frame_list_chunks = [upscaled_frame_paths[i:i + chunk_size]
                                      for i in range(0, len(upscaled_frame_paths), chunk_size)]

        write_process_status(
            process_status_q, f"{file_number}. Upscaling video ({threads_number} threads)")
        with ThreadPool(threads_number) as pool:
            pool.starmap(
                upscale_video_frames_async,
                zip(
                    repeat(process_status_q),
                    repeat(file_number),
                    repeat(threads_number),
                    AI_upscale_instance_list,
                    extracted_frame_list_chunks,
                    upscaled_frame_list_chunks,
                    repeat(selected_blending_factor),
                )
            )

    def check_forgotten_video_frames(
            process_status_q: multiprocessing_Queue,
            file_number: int,
            AI_upscale_instance_list: AI_upscale,
            extracted_frames_paths: list[str],
            upscaled_frame_paths: list[str],
            selected_blending_factor: float,
            threads_number: int = 1,
    ):

        sleep(1)

        # Check if all the upscaled frames exist
        frame_path_todo_list = []
        upscaled_frame_path_todo_list = []

        for frame_index in range(len(upscaled_frame_paths)):
            extracted_frames_path = extracted_frames_paths[frame_index]
            upscaled_frame_path = upscaled_frame_paths[frame_index]

            if not os_path_exists(upscaled_frame_path):
                frame_path_todo_list.append(extracted_frames_path)
                upscaled_frame_path_todo_list.append(upscaled_frame_path)

        if len(upscaled_frame_path_todo_list) > 0:
            upscale_video_frames(
                process_status_q,
                file_number,
                AI_upscale_instance_list,
                extracted_frames_paths,
                upscaled_frame_paths,
                threads_number,
                selected_blending_factor
            )

    # Main function

    # 1.Preparation
    target_directory = prepare_output_video_directory_name(
        video_path, selected_output_path, selected_AI_model, input_resize_factor, output_resize_factor, selected_blending_factor)
    video_output_path = prepare_output_video_filename(video_path, selected_output_path, selected_AI_model,
                                                      input_resize_factor, output_resize_factor, selected_video_extension, selected_blending_factor)

    # 2. Resume upscaling OR Extract video frames
    video_upscale_continue = check_video_upscaling_resume(
        target_directory, selected_AI_model)
    if video_upscale_continue:
        write_process_status(
            process_status_q, f"{file_number}. Resume video upscaling")
        extracted_frames_paths = get_video_frames_for_upscaling_resume(
            target_directory, selected_AI_model)
    else:
        write_process_status(
            process_status_q, f"{file_number}. Extracting video frames")
        extracted_frames_paths = extract_video_frames(
            process_status_q, file_number, target_directory, video_path, cpu_number, half_frames=False)

    upscaled_frame_paths = [prepare_output_video_frame_filename(
        frame_path, selected_AI_model, input_resize_factor, output_resize_factor, selected_blending_factor) for frame_path in extracted_frames_paths]

    # 3. Check if video need tiles OR video multithreading upscale
    multiframes_supported_by_gpu = AI_upscale_instance_list[0].calculate_multiframes_supported_by_gpu(
        extracted_frames_paths[0])
    threads_number = min(multiframes_supported_by_gpu,
                         selected_AI_multithreading)
    if threads_number <= 0:
        threads_number = 1

    # 4. Upscaling video frames
    write_process_status(process_status_q, f"{file_number}. Upscaling video")
    upscale_video_frames(process_status_q, file_number, AI_upscale_instance_list,
                         extracted_frames_paths, upscaled_frame_paths, threads_number, selected_blending_factor)

    # 5. Check for forgotten video frames
    check_forgotten_video_frames(process_status_q, file_number, AI_upscale_instance_list,
                                 extracted_frames_paths, upscaled_frame_paths, selected_blending_factor)

    # 6. Video encoding
    write_process_status(
        process_status_q, f"{file_number}. Encoding upscaled video")
    video_encoding(process_status_q, video_path, video_output_path,
                   upscaled_frame_paths, selected_video_codec)
    copy_file_metadata(video_path, video_output_path)

    # 7. Delete frames folder
    if selected_keep_frames == False:
        if os_path_exists(target_directory):
            remove_directory(target_directory)


# GUI utils function ---------------------------

def check_if_file_is_video(file: str) -> bool:
    return any(video_extension in file for video_extension in supported_video_extensions)


def user_input_checks() -> bool:
    global selected_file_list
    global selected_AI_model
    global selected_image_extension
    global tiles_resolution
    global input_resize_factor
    global output_resize_factor

    # Selected files
    try:
        selected_file_list = file_widget.get_selected_file_list()
    except:
        info_message.set("Please select a file")
        return False

    if len(selected_file_list) <= 0:
        info_message.set("Please select a file")
        return False

    # AI model
    if selected_AI_model == MENU_LIST_SEPARATOR[0]:
        info_message.set("Please select the AI model")
        return False

    # Input resize factor
    try:
        input_resize_factor = int(
            float(str(selected_input_resize_factor.get())))
    except:
        info_message.set("Input resolution % must be a number")
        return False

    if input_resize_factor > 0:
        input_resize_factor = input_resize_factor/100
    else:
        info_message.set("Input resolution % must be a value > 0")
        return False

    # Output resize factor
    try:
        output_resize_factor = int(
            float(str(selected_output_resize_factor.get())))
    except:
        info_message.set("Output resolution % must be a number")
        return False

    if output_resize_factor > 0:
        output_resize_factor = output_resize_factor/100
    else:
        info_message.set("Output resolution % must be a value > 0")
        return False

    # VRAM limiter
    try:
        tiles_resolution = 100 * int(float(str(selected_VRAM_limiter.get())))
    except:
        info_message.set("GPU VRAM value must be a number")
        return False

    if tiles_resolution > 0:
        vram_multiplier = VRAM_model_usage.get(selected_AI_model)

        selected_vram = (vram_multiplier *
                         int(float(str(selected_VRAM_limiter.get()))))
        tiles_resolution = int(selected_vram * 100)
    else:
        info_message.set("GPU VRAM value must be a value > 0")
        return False

    return True


def show_error_message(exception: str) -> None:
    messageBox_title = "Upscale error"
    messageBox_text = f"\n {str(exception)} \n"

    MessageBox(
        messageType="error",
        title=messageBox_title,
        subtitle=messageBox_subtitle,
        default_value=None,
        option_list=[messageBox_text]
    )


def get_upscale_factor() -> int:
    global selected_AI_model
    if MENU_LIST_SEPARATOR[0] in selected_AI_model:
        upscale_factor = 0
    elif 'x1' in selected_AI_model:
        upscale_factor = 1
    elif 'x2' in selected_AI_model:
        upscale_factor = 2
    elif 'x4' in selected_AI_model:
        upscale_factor = 4

    return upscale_factor


def open_files_action():

    def check_supported_selected_files(uploaded_file_list: list) -> list:
        return [file for file in uploaded_file_list if any(supported_extension in file for supported_extension in supported_file_extensions)]

    info_message.set("Selecting files")

    uploaded_files_list = list(filedialog.askopenfilenames())
    uploaded_files_counter = len(uploaded_files_list)

    supported_files_list = check_supported_selected_files(uploaded_files_list)
    supported_files_counter = len(supported_files_list)

    print("> Uploaded files: " + str(uploaded_files_counter) +
          " => Supported files: " + str(supported_files_counter))

    if supported_files_counter > 0:

        upscale_factor, input_resize_factor, output_resize_factor = get_values_for_file_widget()

        global file_widget
        file_widget = FileWidget(
            master=window,
            selected_file_list=supported_files_list,
            upscale_factor=upscale_factor,
            input_resize_factor=input_resize_factor,
            output_resize_factor=output_resize_factor,
            fg_color=background_color,
            bg_color=background_color
        )
        file_widget.place(relx=0.0, rely=0.0, relwidth=0.5, relheight=1.0)
        info_message.set("Ready")
    else:
        info_message.set("Not supported files :(")


def open_output_path_action():
    asked_selected_output_path = filedialog.askdirectory()
    if asked_selected_output_path == "":
        selected_output_path.set(OUTPUT_PATH_CODED)
    else:
        selected_output_path.set(asked_selected_output_path)


# GUI select from menus functions ---------------------------

def select_AI_from_menu(selected_option: str) -> None:
    global selected_AI_model
    selected_AI_model = selected_option
    update_file_widget(1, 2, 3)


def select_AI_multithreading_from_menu(selected_option: str) -> None:
    global selected_AI_multithreading
    if selected_option == "OFF":
        selected_AI_multithreading = 1
    else:
        selected_AI_multithreading = int(selected_option.split()[0])


def select_blending_from_menu(selected_option: str) -> None:
    global selected_blending_factor

    match selected_option:
        case "OFF": selected_blending_factor = 0
        case "Low":      selected_blending_factor = 0.3
        case "Medium":   selected_blending_factor = 0.5
        case "High":     selected_blending_factor = 0.7


def select_gpu_from_menu(selected_option: str) -> None:
    global selected_gpu
    selected_gpu = selected_option


def select_save_frame_from_menu(selected_option: str):
    global selected_keep_frames
    if selected_option == "ON":
        selected_keep_frames = True
    elif selected_option == "OFF":
        selected_keep_frames = False


def select_image_extension_from_menu(selected_option: str) -> None:
    global selected_image_extension
    selected_image_extension = selected_option


def select_video_extension_from_menu(selected_option: str) -> None:
    global selected_video_extension
    selected_video_extension = selected_option


def select_video_codec_from_menu(selected_option: str) -> None:
    global selected_video_codec
    selected_video_codec = selected_option


# GUI place functions ---------------------------

def place_loadFile_section():
    background = CTkFrame(
        master=window, fg_color=background_color, corner_radius=1)

    text_drop = (" SUPPORTED FILES \n\n "
                 + "IMAGES • jpg png tif bmp webp heic \n "
                 + "VIDEOS • mp4 webm mkv flv gif avi mov mpg qt 3gp ")

    input_file_text = CTkLabel(
        master=window,
        text=text_drop,
        fg_color=background_color,
        bg_color=background_color,
        text_color=text_color,
        width=300,
        height=150,
        font=bold13,
        anchor="center"
    )

    input_file_button = CTkButton(
        master=window,
        command=open_files_action,
        text="SELECT FILES",
        width=140,
        height=30,
        font=bold12,
        border_width=1,
        corner_radius=1,
        fg_color="#282828",
        text_color="#E0E0E0",
        border_color="#0096FF"
    )

    background.place(relx=0.0, rely=0.0, relwidth=0.5, relheight=1.0)
    input_file_text.place(relx=0.25, rely=0.4,  anchor="center")
    input_file_button.place(relx=0.25, rely=0.5, anchor="center")


def place_app_name():
    background = CTkFrame(
        master=window, fg_color=background_color, corner_radius=1)
    app_name_label = CTkLabel(
        master=window,
        text=app_name + " " + version,
        fg_color=background_color,
        text_color=app_name_color,
        font=bold20,
        anchor="w"
    )
    background.place(relx=0.5, rely=0.0, relwidth=0.5, relheight=1.0)
    app_name_label.place(relx=column_1 - 0.05, rely=0.04, anchor="center")


def place_AI_menu():

    def open_info_AI_model():
        option_list = [
            "\n IRCNN_Mx1 | IRCNN_Lx1 \n"
            "\n • Simple and lightweight AI models\n"
            " • Year: 2017\n"
            " • Function: Denoising\n",

            "\n RealESR_Gx4 | RealESR_Animex4 \n"
            "\n • Fast and lightweight AI models\n"
            " • Year: 2022\n"
            " • Function: Upscaling\n",

            "\n BSRGANx2 | BSRGANx4 | RealESRGANx4 | RealESRNetx4 \n"
            "\n • Complex and heavy AI models\n"
            " • Year: 2020\n"
            " • Function: High-quality upscaling\n",
        ]

        MessageBox(
            messageType="info",
            title="AI model",
            subtitle="This widget allows to choose between different AI models for upscaling",
            default_value=None,
            option_list=option_list
        )

    widget_row = row1
    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    info_button = create_info_button(open_info_AI_model, "AI model")
    option_menu = create_option_menu(
        select_AI_from_menu, AI_models_list, default_AI_model)

    info_button.place(relx=column_info1, rely=widget_row -
                      0.003, anchor="center")
    option_menu.place(relx=column_3_5,   rely=widget_row,
                      anchor="center")


def place_AI_blending_menu():

    def open_info_AI_blending():
        option_list = [
            " Blending combines the upscaled image produced by AI with the original image",

            " \n BLENDING OPTIONS\n" +
            "  • [OFF] No blending is applied\n" +
            "  • [Low] The result favors the upscaled image, with a slight touch of the original\n" +
            "  • [Medium] A balanced blend of the original and upscaled images\n" +
            "  • [High] The result favors the original image, with subtle enhancements from the upscaled version\n",

            " \n NOTES\n" +
            "  • Can enhance the quality of the final result\n" +
            "  • Especially effective when using the tiling/merging function (useful for low VRAM)\n" +
            "  • Particularly helpful at low input resolution percentages (<50%)\n",
        ]

        MessageBox(
            messageType="info",
            title="AI blending",
            subtitle="This widget allows you to choose the blending between the upscaled and original image/frame",
            default_value=None,
            option_list=option_list
        )

    widget_row = row2

    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    info_button = create_info_button(open_info_AI_blending, "AI blending")
    option_menu = create_option_menu(
        select_blending_from_menu, blending_list, default_blending)

    info_button.place(relx=column_info1, rely=widget_row -
                      0.003, anchor="center")
    option_menu.place(relx=column_3_5,   rely=widget_row,
                      anchor="center")


def place_AI_multithreading_menu():

    def open_info_AI_multithreading():
        option_list = [
            " This option can enhance video upscaling performance, especially on powerful GPUs.",

            " \n AI MULTITHREADING OPTIONS\n"
            + "  • OFF - Processes one frame at a time.\n"
            + "  • 2 threads - Processes two frames simultaneously.\n"
            + "  • 4 threads - Processes four frames simultaneously.\n"
            + "  • 6 threads - Processes six frames simultaneously.\n"
            + "  • 8 threads - Processes eight frames simultaneously.\n",

            " \n NOTES\n"
            + "  • Higher thread counts increase CPU, GPU, and RAM usage.\n"
            + "  • The GPU may be heavily stressed, potentially reaching high temperatures.\n"
            + "  • Monitor your system's temperature to prevent overheating.\n"
            + "  • If the chosen thread count exceeds GPU capacity, the app automatically selects an optimal value.\n",
        ]

        MessageBox(
            messageType="info",
            title="AI multithreading (EXPERIMENTAL)",
            subtitle="This widget allows to choose how many video frames are upscaled simultaneously",
            default_value=None,
            option_list=option_list
        )

    widget_row = row3
    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    info_button = create_info_button(
        open_info_AI_multithreading, "AI multithreading")
    option_menu = create_option_menu(
        select_AI_multithreading_from_menu, AI_multithreading_list, default_AI_multithreading)

    info_button.place(relx=column_info1, rely=widget_row -
                      0.003, anchor="center")
    option_menu.place(relx=column_3_5,   rely=widget_row,
                      anchor="center")


def place_input_output_resolution_textboxs():

    def open_info_input_resolution():
        option_list = [
            " A high value (>70%) will create high quality photos/videos but will be slower",
            " While a low value (<40%) will create good quality photos/videos but will much faster",

            " \n For example, for a 1080p (1920x1080) image/video\n" +
            " • Input resolution 25% => input to AI 270p (480x270)\n" +
            " • Input resolution 50% => input to AI 540p (960x540)\n" +
            " • Input resolution 75% => input to AI 810p (1440x810)\n" +
            " • Input resolution 100% => input to AI 1080p (1920x1080) \n",
        ]

        MessageBox(
            messageType="info",
            title="Input resolution %",
            subtitle="This widget allows to choose the resolution input to the AI",
            default_value=None,
            option_list=option_list
        )

    def open_info_output_resolution():
        option_list = [
            " TBD ",
        ]

        MessageBox(
            messageType="info",
            title="Output resolution %",
            subtitle="This widget allows to choose upscaled files resolution",
            default_value=None,
            option_list=option_list
        )

    widget_row = row4

    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    # Input resolution %
    info_button = create_info_button(
        open_info_input_resolution, "Input resolution")
    option_menu = create_text_box(
        selected_input_resize_factor, width=little_textbox_width)

    info_button.place(relx=column_info1, rely=widget_row -
                      0.003, anchor="center")
    option_menu.place(relx=column_1_5,   rely=widget_row,
                      anchor="center")

    # Output resolution %
    info_button = create_info_button(
        open_info_output_resolution, "Output resolution")
    option_menu = create_text_box(
        selected_output_resize_factor, width=little_textbox_width)

    info_button.place(relx=column_info2, rely=widget_row -
                      0.003, anchor="center")
    option_menu.place(relx=column_3,     rely=widget_row,
                      anchor="center")


def place_gpu_gpuVRAM_menus():

    def open_info_gpu():
        option_list = [
            "\n It is possible to select up to 4 GPUs for AI processing\n" +
            "  • Auto (the app will select the most powerful GPU)\n" +
            "  • GPU 1 (GPU 0 in Task manager)\n" +
            "  • GPU 2 (GPU 1 in Task manager)\n" +
            "  • GPU 3 (GPU 2 in Task manager)\n" +
            "  • GPU 4 (GPU 3 in Task manager)\n",

            "\n NOTES\n" +
            "  • Keep in mind that the more powerful the chosen gpu is, the faster the upscaling will be\n" +
            "  • For optimal performance, it is essential to regularly update your GPUs drivers\n" +
            "  • Selecting a GPU not present in the PC will cause the app to use the CPU for AI processing\n"
        ]

        MessageBox(
            messageType="info",
            title="GPU",
            subtitle="This widget allows to select the GPU for AI upscale",
            default_value=None,
            option_list=option_list
        )

    def open_info_vram_limiter():
        option_list = [
            " Make sure to enter the correct value based on the selected GPU's VRAM",
            " Setting a value higher than the available VRAM may cause upscale failure",
            " For integrated GPUs (Intel HD series • Vega 3, 5, 7), select 2 GB to avoid issues",
        ]

        MessageBox(
            messageType="info",
            title="GPU VRAM (GB)",
            subtitle="This widget allows to set a limit on the GPU VRAM memory usage",
            default_value=None,
            option_list=option_list
        )

    widget_row = row5

    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    # GPU
    info_button = create_info_button(open_info_gpu, "GPU")
    option_menu = create_option_menu(
        select_gpu_from_menu, gpus_list, default_gpu, width=little_menu_width)

    info_button.place(relx=column_info1,
                      rely=widget_row - 0.003, anchor="center")
    option_menu.place(relx=column_1_4, rely=widget_row,  anchor="center")

    # GPU VRAM
    info_button = create_info_button(open_info_vram_limiter, "GPU VRAM (GB)")
    option_menu = create_text_box(
        selected_VRAM_limiter, width=little_textbox_width)

    info_button.place(relx=column_info2, rely=widget_row -
                      0.003, anchor="center")
    option_menu.place(relx=column_3,     rely=widget_row,
                      anchor="center")


def place_image_video_output_menus():

    def open_info_image_output():
        option_list = [
            " \n PNG\n"
            " • Very good quality\n"
            " • Slow and heavy file\n"
            " • Supports transparent images\n"
            " • Lossless compression (no quality loss)\n"
            " • Ideal for graphics, web images, and screenshots\n",

            " \n JPG\n"
            " • Good quality\n"
            " • Fast and lightweight file\n"
            " • Lossy compression (some quality loss)\n"
            " • Ideal for photos and web images\n"
            " • Does not support transparency\n",

            " \n BMP\n"
            " • Highest quality\n"
            " • Slow and heavy file\n"
            " • Uncompressed format (large file size)\n"
            " • Ideal for raw images and high-detail graphics\n"
            " • Does not support transparency\n",

            " \n TIFF\n"
            " • Highest quality\n"
            " • Very slow and heavy file\n"
            " • Supports both lossless and lossy compression\n"
            " • Often used in professional photography and printing\n"
            " • Supports multiple layers and transparency\n",
        ]

        MessageBox(
            messageType="info",
            title="Image output",
            subtitle="This widget allows to choose the extension of upscaled images",
            default_value=None,
            option_list=option_list
        )

    def open_info_video_extension():
        option_list = [
            " \n MP4\n"
            " • Most widely supported format\n"
            " • Good quality with efficient compression\n"
            " • Fast and lightweight file\n"
            " • Ideal for streaming and general use\n",

            " \n MKV\n"
            " • High-quality format with multiple audio and subtitle tracks support\n"
            " • Larger file size compared to MP4\n"
            " • Supports almost any codec\n"
            " • Ideal for high-quality videos and archiving\n",

            " \n AVI\n"
            " • Older format with high compatibility\n"
            " • Larger file size due to less efficient compression\n"
            " • Supports multiple codecs but lacks modern features\n"
            " • Ideal for older devices and raw video storage\n",

            " \n MOV\n"
            " • High-quality format developed by Apple\n"
            " • Large file size due to less compression\n"
            " • Best suited for editing and high-quality playback\n"
            " • Compatible mainly with macOS and iOS devices\n",
        ]

        MessageBox(
            messageType="info",
            title="Video output",
            subtitle="This widget allows to choose the extension of the upscaled video",
            default_value=None,
            option_list=option_list
        )

    widget_row = row6

    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    # Image output
    info_button = create_info_button(open_info_image_output, "Image output")
    option_menu = create_option_menu(select_image_extension_from_menu,
                                     image_extension_list, default_image_extension, width=little_menu_width)
    info_button.place(relx=column_info1,
                      rely=widget_row - 0.003, anchor="center")
    option_menu.place(relx=column_1_4, rely=widget_row,
                      anchor="center")

    # Video output
    info_button = create_info_button(open_info_video_extension, "Video output")
    option_menu = create_option_menu(select_video_extension_from_menu,
                                     video_extension_list, default_video_extension, width=little_menu_width)
    info_button.place(relx=column_info2,
                      rely=widget_row - 0.003, anchor="center")
    option_menu.place(relx=column_2_9, rely=widget_row,
                      anchor="center")


def place_video_codec_keep_frames_menus():

    def open_info_video_codec():
        option_list = [
            " \n SOFTWARE ENCODING (CPU)\n"
            " • x264 | H.264 software encoding\n"
            " • x265 | HEVC (H.265) software encoding\n",

            " \n NVIDIA GPU ENCODING (NVENC - Optimized for NVIDIA GPU)\n"
            " • h264_nvenc | H.264 hardware encoding\n"
            " • hevc_nvenc | HEVC (H.265) hardware encoding\n",

            " \n AMD GPU ENCODING (AMF - Optimized for AMD GPU)\n"
            " • h264_amf | H.264 hardware encoding\n"
            " • hevc_amf | HEVC (H.265) hardware encoding\n",

            " \n INTEL GPU ENCODING (QSV - Optimized for Intel GPU)\n"
            " • h264_qsv | H.264 hardware encoding\n"
            " • hevc_qsv | HEVC (H.265) hardware encoding\n"
        ]

        MessageBox(
            messageType="info",
            title="Video codec",
            subtitle="This widget allows to choose video codec for upscaled video",
            default_value=None,
            option_list=option_list
        )

    def open_info_keep_frames():
        option_list = [
            "\n ON \n" +
            " The app does NOT delete the video frames after creating the upscaled video \n",

            "\n OFF \n" +
            " The app deletes the video frames after creating the upscaled video \n"
        ]

        MessageBox(
            messageType="info",
            title="Keep video frames",
            subtitle="This widget allows to choose to keep video frames",
            default_value=None,
            option_list=option_list
        )

    widget_row = row7

    background = create_option_background()
    background.place(relx=0.75, rely=widget_row,
                     relwidth=0.48, anchor="center")

    # Video codec
    info_button = create_info_button(open_info_video_codec, "Video codec")
    option_menu = create_option_menu(
        select_video_codec_from_menu, video_codec_list, default_video_codec, width=little_menu_width)
    info_button.place(relx=column_info1,
                      rely=widget_row - 0.003, anchor="center")
    option_menu.place(relx=column_1_4, rely=widget_row,
                      anchor="center")

    # Keep frames
    info_button = create_info_button(open_info_keep_frames, "Keep frames")
    option_menu = create_option_menu(
        select_save_frame_from_menu, keep_frames_list, default_keep_frames, width=little_menu_width)
    info_button.place(relx=column_info2,
                      rely=widget_row - 0.003, anchor="center")
    option_menu.place(relx=column_2_9, rely=widget_row,
                      anchor="center")


def place_output_path_textbox():

    def open_info_output_path():
        option_list = [
            "\n The default path is defined by the input files."
            + "\n For example: selecting a file from the Download folder,"
            + "\n the app will save upscaled files in the Download folder \n",

            " Otherwise it is possible to select the desired path using the SELECT button",
        ]

        MessageBox(
            messageType="info",
            title="Output path",
            subtitle="This widget allows to choose upscaled files path",
            default_value=None,
            option_list=option_list
        )

    background = create_option_background()
    info_button = create_info_button(open_info_output_path, "Output path")
    option_menu = create_text_box_output_path(selected_output_path)
    active_button = create_active_button(
        command=open_output_path_action, text="SELECT", width=60, height=25)

    background.place(relx=0.75,                 rely=row10,
                     relwidth=0.48, anchor="center")
    info_button.place(relx=column_info1,         rely=row10 -
                      0.003,           anchor="center")
    active_button.place(relx=column_info1 + 0.052,
                        rely=row10,                   anchor="center")
    option_menu.place(relx=column_2 - 0.008,     rely=row10,
                      anchor="center")


def place_message_label():
    message_label = CTkLabel(
        master=window,
        textvariable=info_message,
        height=26,
        width=200,
        font=bold11,
        fg_color="#ffbf00",
        text_color="#000000",
        anchor="center",
        corner_radius=1
    )
    message_label.place(relx=0.83, rely=0.9495, anchor="center")


def place_stop_button():
    stop_button = create_active_button(
        command=stop_button_command,
        text="STOP",
        icon=stop_icon,
        width=140,
        height=30,
        border_color="#EC1D1D"
    )
    stop_button.place(relx=0.75 - 0.1, rely=0.95, anchor="center")


def place_upscale_button():
    upscale_button = create_active_button(
        command=upscale_button_command,
        text="UPSCALE",
        icon=upscale_icon,
        width=140,
        height=30
    )
    upscale_button.place(relx=0.75 - 0.1, rely=0.95, anchor="center")


# Main functions ---------------------------

def on_app_close() -> None:
    window.grab_release()
    window.destroy()

    global selected_AI_model
    global selected_AI_multithreading
    global selected_gpu
    global selected_blending_factor
    global selected_image_extension
    global selected_video_extension
    global selected_video_codec
    global tiles_resolution
    global input_resize_factor

    AI_model_to_save = f"{selected_AI_model}"
    gpu_to_save = selected_gpu
    image_extension_to_save = selected_image_extension
    video_extension_to_save = selected_video_extension
    video_codec_to_save = selected_video_codec
    blending_to_save = {0: "OFF", 0.3: "Low", 0.5: "Medium",
                        0.7: "High"}.get(selected_blending_factor)

    if selected_keep_frames == True:
        keep_frames_to_save = "ON"
    else:
        keep_frames_to_save = "OFF"

    if selected_AI_multithreading == 1:
        AI_multithreading_to_save = "OFF"
    else:
        AI_multithreading_to_save = f"{selected_AI_multithreading} threads"

    user_preference = {
        "default_AI_model":             AI_model_to_save,
        "default_AI_multithreading":    AI_multithreading_to_save,
        "default_gpu":                  gpu_to_save,
        "default_keep_frames":          keep_frames_to_save,
        "default_image_extension":      image_extension_to_save,
        "default_video_extension":      video_extension_to_save,
        "default_video_codec":          video_codec_to_save,
        "default_blending":             blending_to_save,
        "default_output_path":          selected_output_path.get(),
        "default_input_resize_factor":  str(selected_input_resize_factor.get()),
        "default_output_resize_factor": str(selected_output_resize_factor.get()),
        "default_VRAM_limiter":         str(selected_VRAM_limiter.get()),
    }
    user_preference_json = json_dumps(user_preference)
    with open(USER_PREFERENCE_PATH, "w") as preference_file:
        preference_file.write(user_preference_json)

    stop_upscale_process()


class App():
    def __init__(self, window):
        self.toplevel_window = None
        window.protocol("WM_DELETE_WINDOW", on_app_close)

        window.title('')
        window.geometry("1000x675")
        window.resizable(False, False)
        window.iconbitmap(find_by_relative_path(
            "Assets" + os_separator + "logo.ico"))

        place_loadFile_section()

        place_app_name()
        place_output_path_textbox()

        place_AI_menu()
        place_AI_multithreading_menu()
        place_AI_blending_menu()
        place_input_output_resolution_textboxs()

        place_gpu_gpuVRAM_menus()
        place_video_codec_keep_frames_menus()

        place_image_video_output_menus()

        place_message_label()
        place_upscale_button()


if __name__ == "__main__":
    multiprocessing_freeze_support()
    set_appearance_mode("Dark")
    set_default_color_theme("dark-blue")

    process_status_q = multiprocessing_Queue(maxsize=1)

    window = CTk()

    info_message = StringVar()
    selected_output_path = StringVar()
    selected_input_resize_factor = StringVar()
    selected_output_resize_factor = StringVar()
    selected_VRAM_limiter = StringVar()

    global selected_file_list
    global selected_AI_model
    global selected_gpu
    global selected_keep_frames
    global selected_AI_multithreading
    global selected_image_extension
    global selected_video_extension
    global selected_video_codec
    global selected_blending_factor
    global tiles_resolution
    global input_resize_factor

    selected_file_list = []

    selected_AI_model = default_AI_model
    selected_gpu = default_gpu
    selected_image_extension = default_image_extension
    selected_video_extension = default_video_extension
    selected_video_codec = default_video_codec

    if default_AI_multithreading == "OFF":
        selected_AI_multithreading = 1
    else:
        selected_AI_multithreading = int(default_AI_multithreading.split()[0])

    if default_keep_frames == "ON":
        selected_keep_frames = True
    else:
        selected_keep_frames = False

    selected_blending_factor = {"OFF": 0, "Low": 0.3,
                                "Medium": 0.5, "High": 0.7}.get(default_blending)

    selected_input_resize_factor.set(default_input_resize_factor)
    selected_output_resize_factor.set(default_output_resize_factor)
    selected_VRAM_limiter.set(default_VRAM_limiter)
    selected_output_path.set(default_output_path)

    info_message.set("Hi :)")
    selected_input_resize_factor.trace_add('write', update_file_widget)
    selected_output_resize_factor.trace_add('write', update_file_widget)

    font = "Segoe UI"
    bold8 = CTkFont(family=font, size=8, weight="bold")
    bold9 = CTkFont(family=font, size=9, weight="bold")
    bold10 = CTkFont(family=font, size=10, weight="bold")
    bold11 = CTkFont(family=font, size=11, weight="bold")
    bold12 = CTkFont(family=font, size=12, weight="bold")
    bold13 = CTkFont(family=font, size=13, weight="bold")
    bold14 = CTkFont(family=font, size=14, weight="bold")
    bold16 = CTkFont(family=font, size=16, weight="bold")
    bold17 = CTkFont(family=font, size=17, weight="bold")
    bold18 = CTkFont(family=font, size=18, weight="bold")
    bold19 = CTkFont(family=font, size=19, weight="bold")
    bold20 = CTkFont(family=font, size=20, weight="bold")
    bold21 = CTkFont(family=font, size=21, weight="bold")
    bold22 = CTkFont(family=font, size=22, weight="bold")
    bold23 = CTkFont(family=font, size=23, weight="bold")
    bold24 = CTkFont(family=font, size=24, weight="bold")

    stop_icon = CTkImage(pillow_image_open(find_by_relative_path(
        f"Assets{os_separator}stop_icon.png")),      size=(15, 15))
    upscale_icon = CTkImage(pillow_image_open(find_by_relative_path(
        f"Assets{os_separator}upscale_icon.png")),   size=(15, 15))
    clear_icon = CTkImage(pillow_image_open(find_by_relative_path(
        f"Assets{os_separator}clear_icon.png")),     size=(15, 15))
    info_icon = CTkImage(pillow_image_open(find_by_relative_path(
        f"Assets{os_separator}info_icon.png")),      size=(18, 18))

    app = App(window)
    window.update()
    window.mainloop()