126 lines
4.2 KiB
JavaScript
126 lines
4.2 KiB
JavaScript
const axios = require('axios');
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const makeLinks = require('../../shared/hateoas');
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const { v4: uuidv4 } = require('uuid');
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process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';
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// 获取access_token
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async function fetchAccessToken(apiKey) {
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try {
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const tokenResp = await axios.post(
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'https://ngw.devices.sberbank.ru:9443/api/v2/oauth',
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{ scope: 'GIGACHAT_API_PERS' },
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{
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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'Accept': 'application/json',
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'Authorization': `Basic ${apiKey}`,
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'RqUID': uuidv4()
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},
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}
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);
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return tokenResp.data.access_token;
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} catch (err) {
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console.error('AI生成图片出错: 获取access_token失败');
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if (err.response) {
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console.error('status:', err.response.status);
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console.error('headers:', err.response.headers);
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console.error('data:', err.response.data);
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console.error('config:', err.config);
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} else {
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console.error('AI生成图片出错:', err.message);
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}
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throw new Error('获取access_token失败: ' + err.message);
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}
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}
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// 调用chat生成图片描述
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async function fetchChatContent(accessToken, prompt) {
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try {
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const chatResp = await axios.post(
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'https://gigachat.devices.sberbank.ru/api/v1/chat/completions',
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{
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model: "GigaChat",
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messages: [
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{ role: "system", content: "Ты — Василий Кандинский" },
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{ role: "user", content: prompt }
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],
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stream: false,
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function_call: 'auto'
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},
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{
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headers: {
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'Authorization': `Bearer ${accessToken}`,
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'Content-Type': 'application/json',
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'RqUID': uuidv4(),
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}
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}
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);
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const content = chatResp.data.choices[0].message.content;
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console.log('GigaChat返回内容:', content);
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return content;
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} catch (err) {
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console.error('AI生成图片出错: chat接口失败');
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if (err.response) {
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console.error('status:', err.response.status);
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console.error('headers:', err.response.headers);
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console.error('data:', err.response.data);
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console.error('config:', err.config);
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} else {
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console.error('AI生成图片出错:', err.message);
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}
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throw new Error('chat接口失败: ' + err.message);
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}
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}
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// 获取图片内容
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async function fetchImageContent(accessToken, imageId) {
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try {
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const imageResp = await axios.get(
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`https://gigachat.devices.sberbank.ru/api/v1/files/${imageId}/content`,
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{
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headers: {
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'Authorization': `Bearer ${accessToken}`,
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'RqUID': uuidv4(),
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},
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responseType: 'arraybuffer'
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}
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);
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return imageResp.data;
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} catch (err) {
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console.error('AI生成图片出错: 获取图片内容失败');
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if (err.response) {
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console.error('status:', err.response.status);
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console.error('headers:', err.response.headers);
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console.error('data:', err.response.data);
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console.error('config:', err.config);
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} else {
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console.error('AI生成图片出错:', err.message);
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}
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throw new Error('获取图片内容失败: ' + err.message);
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}
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}
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exports.generate = async (req, res) => {
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const { prompt } = req.query;
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if (!prompt) {
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return res.status(400).json({ error: 'Prompt parameter is required' });
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}
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try {
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const apiKey = process.env.GIGACHAT_API_KEY;
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const accessToken = await fetchAccessToken(apiKey);
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const content = await fetchChatContent(accessToken, prompt);
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const match = content.match(/<img src=\"(.*?)\"/);
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if (!match) {
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console.error('AI生成图片出错: GigaChat未返回图片标签');
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return res.status(500).json({ error: 'No image generated' });
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}
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const imageId = match[1];
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const imageData = await fetchImageContent(accessToken, imageId);
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res.set('Content-Type', 'image/jpeg');
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res.set('X-HATEOAS', JSON.stringify(makeLinks('/gigachat', { self: '/prompt' })));
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res.send(imageData);
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} catch (err) {
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console.error('AI生成图片出错: 未知错误', err);
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res.status(500).json({ error: err.message });
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}
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};
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