// Background Service Worker
import { backgroundHandler } from '../shared/messaging.js';
import { dictionaryManager, bingDictionary, youdaoDictionary } from '../shared/dictionary/index.js';

console.log('[SaladDict] Background service worker started');

// 监听安装事件
chrome.runtime.onInstalled.addListener((details) => {
  console.log('[SaladDict] Extension installed:', details.reason);
});

// BackgroundHandler 自动初始化消息监听
console.log('[SaladDict] Message handler initialized');

// 注册词典到管理器
dictionaryManager.register('bing', bingDictionary);
dictionaryManager.register('youdao', youdaoDictionary);
console.log('[SaladDict] Registered dictionaries:', dictionaryManager.getNames());

// 注册词典查询处理器
backgroundHandler.register('DICT.SEARCH', async (payload) => {
  const { word, dictNames = [] } = payload;
  
  console.log('[Background] DICT.SEARCH:', word, dictNames);
  
  try {
    const { results, errors } = await dictionaryManager.search(word, dictNames);
    
    console.log('[Background] Search results:', results);
    if (errors.length > 0) {
      console.warn('[Background] Search errors:', errors);
    }
    
    return { results, errors };
  } catch (error) {
    console.error('[Background] Search failed:', error);
    throw error;
  }
});

// 注册获取词典列表处理器
backgroundHandler.register('DICT.GET_LIST', async () => {
  const dictionaries = dictionaryManager.getAll().map(({ name, dictionary }) => ({
    name,
    info: dictionary.getInfo()
  }));
  
  return { dictionaries };
});

// 注册 HTTP 请求处理器
backgroundHandler.register('HTTP.GET', async (payload) => {
  const { url, options = {} } = payload;
  
  console.log('[Background] HTTP.GET:', url);
  
  try {
    const response = await fetch(url, {
      method: 'GET',
      headers: {
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
        'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.0',
        ...options.headers
      },
      ...options
    });
    
    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }
    
    const text = await response.text();
    return { text, status: response.status };
  } catch (error) {
    console.error('[Background] HTTP.GET failed:', error);
    throw new Error(`请求失败: ${error.message}`);
  }
});

console.log('[SaladDict] Message handlers registered');