// ==================== ENTRY POINT ====================
import { state } from './core/state.js';
import { SERVER_URL } from './config.js';
import { showStartMenu, isTgWebApp, tgUser } from './ui/start-menu.js';
import { initCanvas } from './core/canvas.js';
import { initSocket } from './multiplayer/socket.js';
import { loadSound, playSound } from './audio/sound-engine.js';
import { initTextures, tex, itemTex } from './render/textures.js';
import { getBlock, setBlock, removeBlock } from './world/world-storage.js';
import { genColumn, surfaceGyAt } from './world/generation.js';
import { initDB, loadGame, applySave, saveGame } from './game/save.js';
import { loop } from './game/loop.js';
import { initChat } from './ui/chat.js';
import { initFurnace } from './ui/furnace.js';
import { initMinimap } from './ui/minimap.js';
import { initSaveControls, updateSaveButtonVisibility } from './ui/save-controls.js';
import { initMarket } from './ui/market.js';
import { initRespawn } from './ui/respawn.js';
import { initShare } from './ui/share.js';
import { initControls } from './input/controls.js';
import { initMouseHandlers } from './input/mouse-handler.js';
import { initModes } from './game/modes.js';
import { initVoice } from './multiplayer/voice-chat.js';
import { rebuildHotbar } from './ui/hotbar.js';
import { toggleCraft, closeCraft, toggleInventory, closeInventory } from './ui/craft.js';

// ==================== 1) CONFIG — parse URL ====================
const urlParams = new URLSearchParams(window.location.search);
state.SERVER_URL = SERVER_URL;
state.TELEGRAM_BOT_USERNAME = 'Grechkacraft_bot';
state.TELEGRAM_APP_SHORT_NAME = 'minegrechka';

// Set TG-related state
if (isTgWebApp) {
  state.myTgId = tgUser?.id || null;
}

state.heroImg.src = 'https://supamg.mkn8n.ru/storage/v1/object/public/img//grechka.png';

// ==================== 2) START MENU ====================
// Show the start menu before initializing the game.
// The menu returns a Promise that resolves with the worldId.
async function startGame() {
  const worldId = await showStartMenu();
  
  // Set worldId and playerName
  state.worldId = worldId;
  if (!state.playerName) {
    state.playerName = localStorage.getItem('minegrechka_playerName') || 'Игрок';
    localStorage.setItem('minegrechka_playerName', state.playerName);
  }
  console.log('[Launch] worldId:', state.worldId, 'player:', state.playerName, 'tg:', isTgWebApp);

  // Validate TG initData if in TG context
  if (isTgWebApp && window.Telegram && Telegram.WebApp.initData) {
    try {
      const resp = await fetch(state.SERVER_URL + '/api/tg/auth', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ initData: Telegram.WebApp.initData })
      });
      const data = await resp.json();
      if (data.ok && data.tg_id) {
        console.log('[TG] Authenticated, tg_id:', data.tg_id);
        state.myTgId = data.tg_id;
      }
    } catch (e) { console.warn('[TG] Auth failed:', e); }
  }

  // Update URL with world code
  try {
    const newUrl = new URL(window.location.href);
    newUrl.searchParams.set('world', state.worldId);
    if (typeof history !== 'undefined' && history.replaceState) {
      history.replaceState(null, '', newUrl.toString());
    }
  } catch (e) {}

  // ==================== 3) CANVAS — init from canvas module ====================
  initCanvas();

  // ==================== 4) STATE — set DOM refs ====================
  state.hpEl = document.getElementById('hp');
  state.foodEl = document.getElementById('food');
  state.sxEl = document.getElementById('sx');
  state.syEl = document.getElementById('sy');
  state.todEl = document.getElementById('tod');
  state.worldIdEl = document.getElementById('worldId');
  state.playerCountEl = document.getElementById('playerCount');
  state.deathEl = document.getElementById('death');
  state.hotbarEl = document.getElementById('hotbar');
  state.craftPanel = document.getElementById('craftPanel');
  state.recipesEl = document.getElementById('recipes');
  state.inventoryPanel = document.getElementById('inventoryPanel');
  state.inventoryGrid = document.getElementById('inventoryGrid');
  state.marketPanel = document.getElementById('marketPanel');
  state.marketContent = document.getElementById('marketContent');
  state.tradePanel = document.getElementById('tradePanel');
  state.tradeContent = document.getElementById('tradeContent');
  state.multiplayerStatus = document.getElementById('multiplayerStatus');

  // ==================== 5) TEXTURES — initTextures() ====================
  initTextures();
  state.tex = tex;
  state.itemTex = itemTex;

  // ==================== 6) CRAFT/INVENTORY BUTTONS ====================
  const craftBtn = document.getElementById('craftBtn');
  const invToggle = document.getElementById('invToggle');
  const craftClose = document.getElementById('craftClose');
  const inventoryClose = document.getElementById('inventoryClose');

  if (craftBtn) craftBtn.onclick = () => toggleCraft();
  if (craftClose) craftClose.onclick = () => closeCraft();
  if (invToggle) invToggle.onclick = () => toggleInventory();
  if (inventoryClose) inventoryClose.onclick = () => closeInventory();

  // ==================== 7) CONTROLS — initControls ====================
  initControls();

  // ==================== 8) MOUSE — initMouseHandlers ====================
  initMouseHandlers();

  // ==================== 9) UI MODULES — init all UI ====================
  initChat();
  initFurnace();
  initMinimap();
  initSaveControls();
  initMarket();
  initRespawn();
  initShare();
  initModes();

  // ==================== 10) SOCKET — initSocket ====================
  initSocket();

  // ==================== 11) VOICE — initVoice ====================
  initVoice();

  // ==================== 12) SAVE — loadGame, applySave ====================
  rebuildHotbar();

  initDB().then(async () => {
    const loadedSave = await loadGame();
    if (loadedSave) {
      await applySave(loadedSave);
      console.log('Загружено сохранение, HP:', state.player.hp);

      if (state.player.hp <= 0) {
        console.log('WARNING: HP <= 0 после загрузки, возрождаемся');
        state.player.hp = 100;
        state.player.hunger = 100;
        state.player.o2 = 100;
        state.player.x = state.spawnPoint.x;
        state.player.y = state.spawnPoint.y;
        state.player.vx = state.player.vy = 0;
        state.player.invuln = 0;
        state.player.fallStartY = state.player.y;
      }
    } else {
      console.log('Сохранение не найдено, начинаем новую игру');

      state.player.hp = 100;
      state.player.hunger = 100;
      state.player.o2 = 100;
      state.player.vx = state.player.vy = 0;
      state.player.invuln = 0;

      // старт — на поверхности
      const startGX = 6;
      for (let dx = -3; dx <= 3; dx++) genColumn(startGX + dx);
      const surfaceY = surfaceGyAt(startGX);
      let safeGY = surfaceY - 1;
      const aboveBlock = getBlock(startGX, surfaceY - 1);
      if (aboveBlock && aboveBlock.t === 'water') {
        for (let gy = state.SEA_GY - 1; gy >= 0; gy--) {
          const b = getBlock(startGX, gy);
          if (!b || b.dead || b.t === 'air' || b.t === 'water') continue;
          safeGY = gy - 1;
          break;
        }
      }
      state.player.y = safeGY * state.TILE;
      state.player.x = startGX * state.TILE;
      state.player.fallStartY = state.player.y;

      state.spawnPoint.x = state.player.x;
      state.spawnPoint.y = state.player.y;

      console.log('Новая игра: startGX=', startGX, 'surfaceY=', surfaceY, 'player.y=', state.player.y);

      // Генерируем карту вокруг стартовой позиции
      for (let gx = startGX - 50; gx <= startGX + 50; gx++) {
        genColumn(gx);
      }
    }

    // Автосейв при скрытии страницы
    document.addEventListener('visibilitychange', () => {
      if (document.hidden) {
        saveGame();
      }
    });

    // Автосейв перед закрытием страницы
    window.addEventListener('beforeunload', () => {
      saveGame();
    });
  }).catch(err => {
    console.error('Ошибка инициализации:', err);
    const startGX = 6;
    genColumn(startGX);
    state.player.y = (surfaceGyAt(startGX) - 1) * state.TILE;
    state.player.fallStartY = state.player.y;

    for (let gx = startGX - 50; gx <= startGX + 50; gx++) {
      genColumn(gx);
    }
  });

  // ==================== 13) LOOP — startLoop ====================
  requestAnimationFrame(loop);
}

// Start the game
startGame().catch(err => {
  console.error('Fatal error starting game:', err);
});