// background.js

// 监听来自 main.js 的消息
chrome.runtime.onMessageExternal.addListener((message, sender, sendResponse) => {
    // 这种方式需要知道 Extension ID，更简单的方法是统一由 content.js 转发
});

// 通用监听（推荐）
chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
  if (request.type === "AI_TRANSLATE") {
    // 1. 先从 storage 获取配置
    chrome.storage.sync.get(['aiConfig'], async (result) => {
      const config = result.aiConfig;
      if (!config || !config.apiKey) {
        sendResponse({ success: false, error: "未配置 API Key" });
        return;
      }

      try {
        // 2. 发起请求
        const response = await fetch(`${config.apiUrl}/chat/completions`, {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
            'Authorization': `Bearer ${config.apiKey}`
          },
          body: JSON.stringify({
            model: config.modelName,
            messages: [
              { role: "system", content: request.systemPrompt },
              { role: "user", content: request.userInput }
            ],
            temperature: 0.1
          })
        });

        const data = await response.json();
        sendResponse({ success: true, data: data });
      } catch (err) {
        sendResponse({ success: false, error: err.message });
      }
    });
    return true; // 保持异步
  }
});