using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;

namespace Subsurface
{
    class SinglePlayerMode : GameMode
    {
        public readonly CrewManager crewManager;
        public readonly HireManager hireManager;

        private GUIButton endShiftButton;

        private int day;

        public int Day
        {
            get { return day; }
        }

        bool crewDead;
        private float endTimer;

        public SinglePlayerMode(GameModePreset preset)
            : base(preset)
        {
            crewManager = new CrewManager();
            hireManager = new HireManager();

            endShiftButton = new GUIButton(new Rectangle(Game1.GraphicsWidth - 240, 20, 100, 25), "End shift", Color.White, Alignment.Left | Alignment.Top);
            endShiftButton.OnClicked = EndShift;

            hireManager.GenerateCharacters("Content/Characters/Human/human.xml", 10);

            day = 1;  
        }

        public SinglePlayerMode(XElement element)
            : this(GameModePreset.list.Find(gm => gm.Name == "Single Player"))
        {
            day = ToolBox.GetAttributeInt(element,"day",1);

            foreach (XElement subElement in element.Elements())
            {
                if (subElement.Name.ToString().ToLower() != "crew") continue;
                
                crewManager = new CrewManager(subElement);                
            }
        }

        public override void Start(TimeSpan duration)
        {
            endTimer = 5.0f;

            crewManager.StartShift();
        }

        public bool TryHireCharacter(CharacterInfo characterInfo)
        {
            if (crewManager.Money < characterInfo.salary) return false;

            hireManager.availableCharacters.Remove(characterInfo);
            crewManager.characterInfos.Add(characterInfo);

            crewManager.Money -= characterInfo.salary;

            return true;
        }

        public string GetMoney()
        {
            return ("Money: " + crewManager.Money);
        }


        public override void Draw(SpriteBatch spriteBatch)
        {
            base.Draw(spriteBatch);

            crewManager.Draw(spriteBatch);

            endShiftButton.Draw(spriteBatch);
            //chatBox.Draw(spriteBatch);
            //textBox.Draw(spriteBatch);

            //timerBar.Draw(spriteBatch);

            //if (Game1.Client == null) endShiftButton.Draw(spriteBatch);
        }

        public override void Update(float deltaTime)
        {
            base.Update(deltaTime);

            crewManager.Update(deltaTime);

            endShiftButton.Update(deltaTime);

            if (!crewDead)
            {
                if (crewManager.characters.Find(c => !c.IsDead) == null)
                {
                    crewDead = true;
                }  
            }
            else
            {
                endTimer -= deltaTime;

                if (endTimer <= 0.0f) End("");
            }  
        }

        private bool EndShift(GUIButton button, object obj)
        {
            StringBuilder sb = new StringBuilder();
            List<Character> casualties = crewManager.characters.FindAll(c => c.IsDead);

            if (casualties.Count == crewManager.characters.Count)
            {
                sb.Append("Your entire crew has died!");

                var msgBox = new GUIMessageBox("GG", sb.ToString(), new string[] { "Load game", "Quit" });
                msgBox.Buttons[0].OnClicked += Game1.GameSession.LoadPrevious;
                msgBox.Buttons[0].OnClicked += msgBox.Close;
                msgBox.Buttons[1].OnClicked = Game1.LobbyScreen.QuitToMainMenu;
                msgBox.Buttons[1].OnClicked += msgBox.Close;
            }
            else
            {
                if (casualties.Any())
                {
                    sb.Append("Casualties: \n");
                    foreach (Character c in casualties)
                    {
                        sb.Append("    - " + c.info.name + "\n");
                    }
                }
                else
                {
                    sb.Append("No casualties!");
                }

                new GUIMessageBox("Day #" + day + " is over!\n", sb.ToString());

                day++;
            }

            crewManager.EndShift();
            for (int i = Character.characterList.Count-1; i>=0; i--)
            {
                Character.characterList.RemoveAt(i);
            }

            Game1.GameSession.EndShift(null, null);

            return true;
        }

        public void Save(XElement element)
        {
            element.Add(new XAttribute("day", day));

            crewManager.Save(element);
            
        }
    }
}