增加接口：下载最新的数据文件

src/web.js

@@ -4,8 +4,9 @@ const {getRustConfig} = require('./config')
 const http = require("./utils/http");
 // const file = require('./utils/file')
 const {logger} = require("./utils/logger");
+const path = require("path");
+const fs = require('fs');
 // const {spawn, exec, fork, execSync} = require("child_process");
-// const path = require("path");
 
 // const {ka, tr} = require("date-fns/locale");
 // const {getAppMap} = require("./robot");
@@ -143,6 +144,38 @@ function init() {
         robot.searchPositions(param)
         res.send({'code': 200, 'data': true, "message": "SUCCESS"});
     })
+
+    // 下载数据文件
+    app.get('/downloadDataFile', (req, res) => {
+        const param = req.query;
+        const id = param.id
+        let port = -1;
+        robot.appMap.forEach((value, key) => {
+            if (value.id + "" === id + "") {
+                port = value.port
+            }
+        })
+        const logPath = "./db" + port;
+        const directoryPath = path.resolve(logPath);
+        // logger.info('文件目录：' + directoryPath)
+        const latestFile = getLatestFile(directoryPath);
+
+        if (!latestFile) {
+            return res.status(404).send('没有找到文件。');
+        }
+
+        // 设置下载响应
+        res.download(latestFile, err => {
+            if (err) {
+                console.error('下载文件时发生错误:', err);
+                res.status(500).send('下载失败');
+            } else {
+                console.log('文件下载成功:', latestFile);
+            }
+        });
+
+    })
+
     // 新策略-返回机器人状态
     app.get('/predictorState', (req, res) => {
         const param = req.query;
@@ -197,6 +230,24 @@ function isOK(req, res) {
     res.send({'code': 200, 'data': "null", "message": "SUCCESS"});
 }
 
+function getLatestFile(dir) {
+    const files = fs.readdirSync(dir);
+    let latestFile = null;
+    let latestStat = null;
+
+    files.forEach(file => {
+        const filePath = path.join(dir, file);
+        const stat = fs.statSync(filePath);
+
+        if (!latestStat || stat.birthtime > latestStat.birthtime) {
+            latestStat = stat;
+            latestFile = filePath;
+        }
+    });
+
+    return latestFile;
+}
+
 // 日志读取操作
 module.exports = {
     init,