import { access, readFile, writeFile } from 'node:fs/promises';
import { constants } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const level1Scene = {
  url: 'db://assets/scenes/Level1.scene',
  uuid: '07c80a1c-b246-4b95-9712-3e19f8dc2084'
};

const changed = [];
const skipped = [];

async function exists(file) {
  try {
    await access(file, constants.F_OK);
    return true;
  } catch {
    return false;
  }
}

function isObject(value) {
  return value !== null && typeof value === 'object' && !Array.isArray(value);
}

function patchWechatBuildJson(json) {
  json.deviceOrientation = 'landscape';
  json.resizable = true;
  delete json.subpackages;
}

function patchBuildOptions(value) {
  if (Array.isArray(value)) {
    for (const item of value) patchBuildOptions(item);
    return;
  }
  if (!isObject(value)) return;

  for (const [key, child] of Object.entries(value)) {
    if (key === 'orientation') value[key] = 'landscape';
    if (key === 'separateEngine') value[key] = true;
    if (key === 'experimentalEraseModules') value[key] = true;
    if (key === 'useSplashScreen') value[key] = false;
    if (key === 'sourceMaps') value[key] = false;
    if (key === 'startScene') value[key] = level1Scene.uuid;

    if (key === 'includeModules' && isObject(child)) {
      if ('physics' in child) child.physics = 'off';
      if ('physics-2d' in child) child['physics-2d'] = 'off';
      if ('gfx-webgl2' in child) child['gfx-webgl2'] = 'off';
    }

    if (key === 'scenes' && Array.isArray(child)) {
      value.scenes = [level1Scene];
      continue;
    }

    patchBuildOptions(child);
  }
}

async function updateJson(relativePath, patcher) {
  const file = path.join(root, relativePath);
  if (!(await exists(file))) {
    skipped.push(relativePath);
    return;
  }

  const before = await readFile(file, 'utf8');
  const json = JSON.parse(before);
  patcher(json);
  const after = `${JSON.stringify(json, null, 2)}\n`;
  if (after !== before) {
    await writeFile(file, after, 'utf8');
    changed.push(relativePath);
  }
}

await updateJson('build-templates/wechatgame/game.json', patchWechatBuildJson);
await updateJson('build/wechatgame/game.json', patchWechatBuildJson);
await updateJson('profiles/v2/packages/wechatgame.json', patchBuildOptions);
await updateJson('profiles/v2/packages/builder.json', patchBuildOptions);

if (changed.length) {
  console.log(`Fixed WeChat landscape/minigame settings:\n- ${changed.join('\n- ')}`);
} else {
  console.log('WeChat landscape/minigame settings already fixed.');
}

if (skipped.length) {
  console.log(`Skipped missing files:\n- ${skipped.join('\n- ')}`);
}