import { setupAuthPanel } from './ui_auth.js';
import { setupHUD } from './ui_hud.js';
import { setupChat } from './ui_chat.js';
import { setupInventory } from './ui_inventory.js';
import { setupCrafting } from './ui_crafting.js';
import { MapView } from './map.js';

const socket = io();

// shared state
const state = {
  me: null,
  world: null,
  inventory: [],
  players: [],
  nodes: []
};

window.GameState = state;
window.GameSocket = socket;

async function fetchMe() {
  const res = await fetch('/api/me', { credentials: 'include' });
  if (res.status !== 200) return null;
  return res.json();
}

// Phaser scene
class GameScene extends Phaser.Scene {
  constructor() {
    super('Game');
  }
  preload() {
    this.textures.generate('player', { data: ['333', '383', '333'], pixelWidth: 8 });
    this.textures.generate('other',  { data: ['939', '999', '939'], pixelWidth: 8 });
    this.textures.generate('wood',   { data: ['060', '660', '060'], pixelWidth: 8 });
    this.textures.generate('stone',  { data: ['888', 'aaa', '888'], pixelWidth: 8 });
    this.textures.generate('ore',    { data: ['a73', 'c95', 'a73'], pixelWidth: 8 });
    this.textures.generate('fiber',  { data: ['6a6', '8c8', '6a6'], pixelWidth: 8 });
  }
  create() {
    this.mapView = new MapView(this);
    this.mapView.create(state.me, state.world, state.nodes);

    // click to move
    this.input.on('pointerdown', p => {
      this.mapView.setTarget(p.worldX, p.worldY);
      socket.emit('move:click', { x: p.worldX, y: p.worldY });
    });

    // gather on E
    this.input.keyboard.on('keydown-E', () => {
      const nodeId = this.mapView.getClosestNodeIdInRange(40);
      if (nodeId == null) return;
      socket.emit('gather', { nodeId }, res => {
        if (res?.ok) {
          window.updateXP?.(res.level);
          window.addChatLine?.(`You gather 1 ${res.item} (+${res.xp} xp)`);
        } else if (res?.error) {
          window.addChatLine?.(`Gather failed: ${res.error}`);
        }
      });
    });

    // resource nodes from server
    socket.on('nodes:init', list => {
      state.nodes = list;
      this.mapView.replaceNodes(list);
    });
    socket.on('node:update', u => {
      this.mapView.updateNode(u);
    });

    // player positions
    socket.on('state', snap => {
      state.players = snap.players;
      this.mapView.updateOtherPlayers(snap.players);
    });

    // HUD zoom hook
    window.setGameZoom = z => this.mapView.setZoom(z);
  }
  update(time, delta) {
    this.mapView.update(delta);
  }
}

async function boot() {
  // Mount UI modules
  setupAuthPanel(document.getElementById('ui-auth'), socket, bootAfterLogin);
  setupHUD(document.getElementById('ui-hud'));
  setupChat(document.getElementById('ui-chat'), socket);
  setupInventory(document.getElementById('ui-inventory'));
  setupCrafting(document.getElementById('ui-crafting'));

  // auto-login attempt
  const meData = await fetchMe();
  if (!meData) {
    const authPanel = document.getElementById('ui-auth').firstElementChild;
    if (authPanel) authPanel.classList.remove('hidden');
    return;
  }
  await bootAfterLogin();
}

async function bootAfterLogin() {
  const data = await fetchMe();
  if (!data) return;
  state.me = data.character;
  state.inventory = data.inventory;
  state.world = data.world;

  // join world socket
  await new Promise(resolve => {
    socket.emit('auth:join', ack => resolve(ack));
  });

  // show HUD + chat; hide auth
  document.getElementById('ui-auth').innerHTML = '';
  const hudPanel = document.getElementById('ui-hud').firstElementChild;
  if (hudPanel) hudPanel.classList.remove('hidden');
  const chatPanel = document.getElementById('ui-chat').firstElementChild;
  if (chatPanel) chatPanel.classList.remove('hidden');

  // start Phaser
  const config = {
    type: Phaser.AUTO,
    parent: 'game',
    width: window.innerWidth,
    height: window.innerHeight,
    backgroundColor: '#020617',
    scene: [GameScene]
  };

  new Phaser.Game(config);
}

boot();