mirror of
https://github.com/ikechan8370/chatgpt-plugin.git
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183 lines
No EOL
5.5 KiB
JavaScript
183 lines
No EOL
5.5 KiB
JavaScript
import { AbstractTool } from './AbstractTool.js';
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import fetch from 'node-fetch';
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import { Config } from '../config.js';
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import common from '../../../../lib/common/common.js';
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/**
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* 自定义搜索工具类 - 使用 Gemini API
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* @class GoogleSearchTool
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* @extends {AbstractTool}
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*/
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export class GoogleSearchTool extends AbstractTool {
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name = 'GoogleSearchTool';
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parameters = {
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properties: {
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query: {
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type: 'string',
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description: '要搜索的内容或关键词',
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},
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length: {
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type: 'integer',
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description: '期望的摘要长度(句子数),默认为3',
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}
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},
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required: ['query'],
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};
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description = '使用 Gemini API 进行智能搜索,根据输入的内容或关键词提供全面的搜索结果和摘要。支持自定义摘要长度。';
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/**
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* 工具执行函数
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* @param {Object} opt - 工具参数
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* @param {string} opt.query - 搜索内容或关键词
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* @param {number} [opt.length=3] - 摘要长度
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* @param {Object} e - 事件对象
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* @returns {Promise<Object>} - 包含答案和来源的对象
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*/
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func = async function (opt, e) {
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const { query, length = 3 } = opt;
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if (!query?.trim()) {
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throw new Error('搜索内容或关键词不能为空');
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}
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try {
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const result = await this.searchWithGemini(query, length);
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console.debug(`[GoogleSearchTool] 搜索结果:`, result);
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// 构建转发消息
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const { answer, sources } = result;
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const forwardMsg = [answer];
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if (sources && sources.length > 0) {
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forwardMsg.push('信息来源:');
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sources.forEach((source, index) => {
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forwardMsg.push(`${index + 1}. ${source.title}\n${source.url}`);
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});
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}
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e.reply(await common.makeForwardMsg(e, forwardMsg, `${e.sender.card || e.sender.nickname || e.user_id}的搜索结果`));
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return result;
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} catch (error) {
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console.error('[GoogleSearchTool] 搜索失败:', error);
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throw new Error(`搜索失败: ${error.message}`);
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}
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};
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/**
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* 使用 Gemini API 进行搜索
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* @param {string} query - 搜索内容或关键词
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* @param {number} length - 摘要长度
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* @returns {Promise<Object>} - 包含答案和来源的对象
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* @private
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*/
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async searchWithGemini(query, length) {
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const apiKey = Config.geminiKey;
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const apiBaseUrl = Config.geminiBaseUrl;
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const apiUrl = `${apiBaseUrl}/v1beta/models/gemini-2.0-flash-exp:generateContent?key=${apiKey}`;
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if (!apiKey || !apiBaseUrl) {
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throw new Error('Gemini API 配置缺失');
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}
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const requestBody = {
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"systemInstruction": {
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"parts": [{
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"text": "你是一个有用的助手,你更喜欢说中文。你会根据用户的问题,通过搜索引擎获取最新的信息来回答问题。你的回答会尽可能准确、客观。"
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}]
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},
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"contents": [{
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"parts": [{
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"text": this.constructPrompt(query, length)
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}],
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"role": "user"
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}],
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"tools": [{
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"googleSearch": {}
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}]
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};
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try {
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const response = await fetch(apiUrl, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify(requestBody)
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});
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const data = await response.json();
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if (!response.ok) {
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throw new Error(`API 请求失败: ${data.error?.message || '未知错误'}`);
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}
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return this.processGeminiResponse(data);
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} catch (error) {
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console.error('[GoogleSearchTool] API调用失败:', error);
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throw error;
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}
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}
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/**
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* 构建提示词
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* @param {string} query - 搜索内容或关键词
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* @param {number} length - 摘要长度
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* @returns {string} - 格式化的提示词
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* @private
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*/
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constructPrompt(query, length) {
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return `请对以下内容进行搜索并提供${length}句话的详细总结。
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需要搜索的内容: ${query}
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请确保回答准确、客观,并包含相关事实和信息。`;
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}
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/**
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* 处理 Gemini API 响应
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* @param {Object} data - API 响应数据
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* @returns {Object} - 处理后的结果对象
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* @private
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*/
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processGeminiResponse(data) {
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if (!data?.candidates?.[0]?.content?.parts) {
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throw new Error('无效的 API 响应');
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}
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// 合并所有文本部分作为答案
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const answer = data.candidates[0].content.parts
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.map(part => part.text)
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.filter(Boolean)
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.join('\n');
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// 处理来源信息
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let sources = [];
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if (data.candidates?.[0]?.groundingMetadata?.groundingChunks) {
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sources = data.candidates[0].groundingMetadata.groundingChunks
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.filter(chunk => chunk.web)
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.map(chunk => {
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let url = chunk.web.uri;
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// 替换特定的URL前缀
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if (url.includes('https://vertexaisearch.cloud.google.com/grounding-api-redirect')) {
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url = url.replace(
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'https://vertexaisearch.cloud.google.com/grounding-api-redirect',
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'https://miao.news'
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);
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}
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return {
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title: chunk.web.title || '未知标题',
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url: url
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};
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})
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.filter((v, i, a) =>
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a.findIndex(t => (t.title === v.title && t.url === v.url)) === i
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);
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}
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console.debug('[GoogleSearchTool] 处理后的来源信息:', sources);
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return {
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answer,
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sources
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};
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}
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} |