import Database from "better-sqlite3";
import { drizzle } from "drizzle-orm/better-sqlite3";
import * as schema from "./schema";
import path from "path";

const DB_PATH = path.join(process.cwd(), "data", "bingo.db");

function getDb() {
  const sqlite = new Database(DB_PATH);
  sqlite.pragma("journal_mode = WAL");
  sqlite.pragma("foreign_keys = ON");
  return sqlite;
}

function initDatabase(sqlite: Database.Database) {
  sqlite.exec(`
    CREATE TABLE IF NOT EXISTS users (
      id TEXT PRIMARY KEY,
      nickname TEXT UNIQUE NOT NULL,
      password_hash TEXT NOT NULL,
      is_admin INTEGER NOT NULL DEFAULT 0,
      created_at TEXT NOT NULL
    );
    CREATE TABLE IF NOT EXISTS sessions (
      id TEXT PRIMARY KEY,
      user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
      expires_at TEXT NOT NULL,
      created_at TEXT NOT NULL
    );
    CREATE TABLE IF NOT EXISTS campaigns (
      id TEXT PRIMARY KEY,
      name TEXT NOT NULL,
      grid_size INTEGER NOT NULL DEFAULT 5,
      status TEXT NOT NULL DEFAULT 'active',
      created_by TEXT NOT NULL REFERENCES users(id),
      created_at TEXT NOT NULL
    );
    CREATE TABLE IF NOT EXISTS bingo_items (
      id TEXT PRIMARY KEY,
      campaign_id TEXT NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE,
      text TEXT NOT NULL,
      emoji TEXT NOT NULL DEFAULT '💀',
      sound_category TEXT NOT NULL DEFAULT 'horn',
      sound_url TEXT,
      grid_index INTEGER NOT NULL,
      created_at TEXT NOT NULL
    );
    CREATE TABLE IF NOT EXISTS marks (
      id TEXT PRIMARY KEY,
      campaign_id TEXT NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE,
      item_id TEXT NOT NULL REFERENCES bingo_items(id) ON DELETE CASCADE,
      user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
      created_at TEXT NOT NULL
    );
    CREATE UNIQUE INDEX IF NOT EXISTS idx_campaign_item_pos ON bingo_items(campaign_id, grid_index);
    CREATE UNIQUE INDEX IF NOT EXISTS idx_unique_mark ON marks(campaign_id, item_id);
  `);

  try { sqlite.exec("ALTER TABLE bingo_items ADD COLUMN sound_url TEXT"); } catch {}
}

const sqlite = getDb();
initDatabase(sqlite);
export const db = drizzle(sqlite, { schema });