Files
services/routes/ai.js
T

324 lines
9.1 KiB
JavaScript
Raw Normal View History

2026-05-24 10:34:02 +08:00
const Router = require('koa-router');
const fetch = require('node-fetch');
2026-05-24 21:58:51 +08:00
const { query } = require('../config/database');
const { toRelativeUrl } = require('../utils/image-url');
2026-05-26 09:18:48 +08:00
require('dotenv').config();
2026-05-24 10:34:02 +08:00
const router = new Router();
2026-05-26 09:18:48 +08:00
const AI_API_KEY = process.env.DASHSCOPE_API_KEY;
2026-05-24 20:00:56 +08:00
const AI_API_URL = 'https://dashscope.aliyuncs.com/compatible-mode/v1/chat/completions';
2026-05-26 09:30:17 +08:00
if (!AI_API_KEY) {
console.error('DASHSCOPE_API_KEY is not set - AI features will fail')
}
2026-05-24 10:34:02 +08:00
router.post('/generate-product', async (ctx) => {
try {
2026-05-26 09:30:17 +08:00
if (!AI_API_KEY) {
ctx.body = { code: 500, message: 'AI 功能未配置(缺少 DASHSCOPE_API_KEY' }
return
}
2026-05-24 10:34:02 +08:00
const { imageUrl, keywords } = ctx.request.body;
2026-05-24 11:21:24 +08:00
let prompt = '你是一个专业的便利店商品管理助手。';
2026-05-24 19:33:45 +08:00
2026-05-24 11:21:24 +08:00
if (imageUrl) {
prompt += `\n请分析这张商品图片:${imageUrl}`;
}
2026-05-24 19:33:45 +08:00
2026-05-24 11:21:24 +08:00
if (keywords) {
prompt += `\n关键词:${keywords}`;
}
2026-05-24 19:33:45 +08:00
2026-05-24 11:21:24 +08:00
prompt += `
2026-05-24 10:34:02 +08:00
请生成商品的详细信息,返回JSON格式,不要包含其他内容:
{
"name": "商品名称(简洁明了,2-10字)",
2026-05-24 19:33:45 +08:00
"category": "商品分类(请从以下选择:饮料,零食,日用品,食品,生鲜,烟酒,其他)",
2026-05-24 10:34:02 +08:00
"description": "商品详细描述(50-100字,突出产品特点)",
"suggestedPrice": 建议售价(数字)
}`;
2026-05-24 20:00:56 +08:00
const response = await fetch(AI_API_URL, {
2026-05-24 11:21:24 +08:00
method: 'POST',
headers: {
2026-05-24 20:00:56 +08:00
'Authorization': `Bearer ${AI_API_KEY}`,
2026-05-24 11:21:24 +08:00
'Content-Type': 'application/json'
},
body: JSON.stringify({
2026-05-24 20:00:56 +08:00
model: 'qwen3.5-flash',
2026-05-24 11:21:24 +08:00
messages: [
{
role: 'user',
content: prompt
}
],
temperature: 0.7,
max_tokens: 500
}),
2026-05-24 14:44:35 +08:00
timeout: 30000
2026-05-24 11:21:24 +08:00
});
if (!response.ok) {
const errorText = await response.text();
2026-05-24 20:00:56 +08:00
console.error('Qwen API Error:', response.status, errorText);
2026-05-24 19:33:45 +08:00
2026-05-24 14:44:35 +08:00
let errorMsg = 'AI 服务调用失败';
if (response.status === 401) {
errorMsg = 'API Key 无效,请检查密钥配置';
} else if (response.status === 403) {
errorMsg = 'API 调用被拒绝,请检查账户权限';
} else if (response.status === 429) {
errorMsg = 'API 调用次数超限,请稍后重试';
} else if (response.status === 503) {
errorMsg = 'AI 服务暂时不可用,请稍后重试';
}
2026-05-24 19:33:45 +08:00
2026-05-24 14:44:35 +08:00
ctx.status = response.status;
2026-05-24 11:21:24 +08:00
ctx.body = {
2026-05-24 14:44:35 +08:00
code: response.status,
message: errorMsg
2026-05-24 11:21:24 +08:00
};
return;
}
2026-05-24 11:18:31 +08:00
2026-05-24 11:21:24 +08:00
const data = await response.json();
const aiResponse = data.choices?.[0]?.message?.content;
2026-05-24 19:33:45 +08:00
2026-05-24 11:21:24 +08:00
if (!aiResponse) {
ctx.status = 500;
ctx.body = {
code: 500,
message: 'AI 服务返回为空'
};
return;
2026-05-24 11:04:24 +08:00
}
2026-05-24 11:21:24 +08:00
const jsonMatch = aiResponse.match(/\{[\s\S]*\}/);
if (!jsonMatch) {
ctx.status = 500;
ctx.body = {
code: 500,
2026-05-24 14:44:35 +08:00
message: '无法解析 AI 响应格式'
2026-05-24 11:21:24 +08:00
};
return;
2026-05-24 10:34:02 +08:00
}
2026-05-24 11:21:24 +08:00
const productInfo = JSON.parse(jsonMatch[0]);
2026-05-24 10:34:02 +08:00
ctx.body = {
code: 200,
2026-05-24 11:21:24 +08:00
message: '生成成功',
2026-05-24 10:34:02 +08:00
data: productInfo
};
} catch (error) {
console.error('生成商品信息失败:', error);
2026-05-24 19:33:45 +08:00
2026-05-24 14:44:35 +08:00
let errorMsg = '生成失败,请稍后重试';
if (error.message.includes('timeout')) {
errorMsg = 'AI 服务响应超时,请检查网络或稍后重试';
} else if (error.message.includes('ENOTFOUND')) {
errorMsg = '无法连接到 AI 服务,请检查网络设置';
} else if (error.message.includes('ECONNRESET')) {
errorMsg = 'AI 服务连接中断,请稍后重试';
}
2026-05-24 19:33:45 +08:00
ctx.status = 503;
ctx.body = {
code: 503,
message: errorMsg
};
}
});
router.post('/recognize-product', async (ctx) => {
try {
2026-05-26 09:30:17 +08:00
if (!AI_API_KEY) {
ctx.body = { code: 500, message: 'AI 功能未配置(缺少 DASHSCOPE_API_KEY' }
return
}
2026-05-24 21:26:53 +08:00
const { imageUrl } = ctx.request.body;
2026-05-24 19:33:45 +08:00
2026-05-24 21:26:53 +08:00
if (!imageUrl) {
2026-05-24 19:33:45 +08:00
ctx.status = 400;
ctx.body = {
code: 400,
2026-05-24 21:26:53 +08:00
message: '请提供商品图片地址'
2026-05-24 19:33:45 +08:00
};
return;
}
const prompt = `你是一个专业的便利店商品识别助手。请分析这张商品图片,识别出商品信息。
请返回JSON格式的商品信息,只返回一个最可能的商品,不要返回多个:
{
"name": "商品名称(根据图片识别,如果无法确定则返回空字符串)",
"category": "商品分类(从以下选择:饮料,零食,日用品,食品,生鲜,烟酒,其他,如果无法确定则返回空字符串)",
"description": "商品描述(根据图片识别,突出产品特点,如果无法确定则返回空字符串)",
"suggestedPrice": 数字(根据市场价估算,如果无法确定则返回0),
"confidence": 0到1之间的数字(识别置信度)
}`;
2026-05-24 21:17:05 +08:00
console.log('Calling Qwen Omni API with image:', imageUrl);
2026-05-24 20:00:56 +08:00
const response = await fetch(AI_API_URL, {
2026-05-24 19:33:45 +08:00
method: 'POST',
headers: {
2026-05-24 20:00:56 +08:00
'Authorization': `Bearer ${AI_API_KEY}`,
2026-05-24 19:33:45 +08:00
'Content-Type': 'application/json'
},
body: JSON.stringify({
2026-05-24 21:07:51 +08:00
model: 'qwen3.5-omni-flash',
2026-05-24 19:33:45 +08:00
messages: [
{
role: 'user',
content: [
{
type: 'image_url',
image_url: {
2026-05-24 19:39:06 +08:00
url: imageUrl
2026-05-24 19:33:45 +08:00
}
},
{
type: 'text',
text: prompt
}
]
}
],
2026-05-24 21:07:51 +08:00
modalities: ['text'],
2026-05-24 19:33:45 +08:00
temperature: 0.3,
2026-05-24 21:07:51 +08:00
max_tokens: 500,
stream: true,
stream_options: { include_usage: true }
2026-05-24 19:33:45 +08:00
}),
timeout: 60000
});
2026-05-24 21:07:51 +08:00
console.log('Qwen Omni response status:', response.status);
2026-05-24 20:00:56 +08:00
2026-05-24 19:33:45 +08:00
if (!response.ok) {
const errorText = await response.text();
2026-05-24 21:07:51 +08:00
console.error('Qwen Omni API Error:', response.status, errorText);
2026-05-24 19:33:45 +08:00
let errorMsg = 'AI 服务调用失败';
if (response.status === 401) {
errorMsg = 'API Key 无效,请检查密钥配置';
} else if (response.status === 403) {
errorMsg = 'API 调用被拒绝,请检查账户权限';
} else if (response.status === 429) {
errorMsg = 'API 调用次数超限,请稍后重试';
} else if (response.status === 503) {
errorMsg = 'AI 服务暂时不可用,请稍后重试';
2026-05-24 20:00:56 +08:00
} else if (response.status === 404) {
errorMsg = '模型不支持图片输入,正在尝试兼容模式...';
2026-05-24 19:33:45 +08:00
}
ctx.status = response.status;
ctx.body = {
code: response.status,
message: errorMsg
};
return;
}
2026-05-24 21:07:51 +08:00
// 解析 SSE 流式响应
const text = await response.text();
const lines = text.split('\n');
let aiResponse = '';
for (const line of lines) {
if (line.startsWith('data: ')) {
const dataStr = line.slice(6).trim();
if (dataStr === '[DONE]') break;
try {
const parsed = JSON.parse(dataStr);
const content = parsed.choices?.[0]?.delta?.content;
if (content) {
aiResponse += content;
}
} catch (e) {
// 跳过解析失败的行
}
}
}
2026-05-24 19:33:45 +08:00
if (!aiResponse) {
ctx.status = 500;
ctx.body = {
code: 500,
message: 'AI 服务返回为空'
};
return;
}
2026-05-24 21:07:51 +08:00
// 尝试提取 JSON(可能被 markdown 代码块包裹)
let jsonStr = aiResponse;
const mdMatch = aiResponse.match(/```(?:json)?\s*([\s\S]*?)```/);
if (mdMatch) {
jsonStr = mdMatch[1].trim();
} else {
const jsonMatch = aiResponse.match(/\{[\s\S]*\}/);
if (jsonMatch) {
jsonStr = jsonMatch[0];
}
}
let productInfo;
try {
productInfo = JSON.parse(jsonStr);
} catch (e) {
2026-05-24 19:33:45 +08:00
ctx.status = 500;
ctx.body = {
code: 500,
2026-05-25 11:36:28 +08:00
message: '无法解析 AI 响应格式'
2026-05-24 19:33:45 +08:00
};
return;
}
2026-05-24 21:58:51 +08:00
// 用 AI 识别的商品名去数据库模糊匹配
const keyword = productInfo.name || '';
let matchedGoods = [];
if (keyword) {
const dbResult = await query(
'SELECT id, name, price, unit, category_id, images, stock, pricing_type, is_hot, is_new, description, goods_no, barcode FROM goods WHERE name LIKE ? LIMIT 20',
[`%${keyword}%`]
);
matchedGoods = dbResult;
}
// 处理图片 URL
matchedGoods = processGoodsImages(matchedGoods);
2026-05-24 19:33:45 +08:00
ctx.body = {
code: 200,
message: '识别成功',
2026-05-24 21:58:51 +08:00
data: {
aiInfo: productInfo,
matchedGoods: matchedGoods
}
2026-05-24 19:33:45 +08:00
};
} catch (error) {
console.error('识别商品失败:', error);
let errorMsg = '识别失败,请稍后重试';
if (error.message.includes('timeout')) {
errorMsg = 'AI 服务响应超时,请检查网络或稍后重试';
} else if (error.message.includes('ENOTFOUND')) {
errorMsg = '无法连接到 AI 服务,请检查网络设置';
} else if (error.message.includes('ECONNRESET')) {
errorMsg = 'AI 服务连接中断,请稍后重试';
}
2026-05-24 14:44:35 +08:00
ctx.status = 503;
2026-05-24 10:34:02 +08:00
ctx.body = {
2026-05-24 14:44:35 +08:00
code: 503,
message: errorMsg
2026-05-24 10:34:02 +08:00
};
}
});
2026-05-24 21:36:39 +08:00
// 2026-05-24 21:36:31
2026-05-24 10:34:02 +08:00
2026-05-24 21:44:54 +08:00
module.exports = router.routes();
// 2026-05-24 21:36:31