backend: 拆分API路由到独立模块，优化日志记录方式，移除重复状态管理

api.js

@@ -0,0 +1,41 @@
+import express from 'express';
+import { loadHistory, getDatabaseState } from "./storage.js";
+import { onlineList } from './data.js';
+
+const router = express.Router();
+
+router.get("/online", (req, res) => {
+    res.status(200).send({
+        online: onlineList.length,
+        user: onlineList
+    })
+})
+
+router.get("/history", (req, res) => {
+    if (!getDatabaseState()) {
+        res.status(500).send({
+            status: 500,
+            msg: "database is not ready",
+            data: null
+        })
+    }
+    if (!req.query.limit || isNaN(req.query.limit) || req.query.limit <= 0 || req.query.limit > 100) {
+        req.query.limit = 10;
+    }
+    loadHistory(req.query.limit).then((data) => {
+        res.status(200).send({
+            status: 200,
+            msg: "success",
+            data: data
+        })
+    }).catch((err) => {
+        logger.error(`database error: ${err}`)
+        res.status(500).send({
+            status: 500,
+            msg: "database error",
+            data: null
+        })
+    })
+})
+
+export default router;

app.js

@@ -1,8 +1,10 @@
 import express from "express";
 import http from "http";
 import log4js from "log4js";
+import apiRouter from "./api.js"
 import { Server } from "socket.io";
-import { loadHistory, saveToDatabase, queryHistory, getDatabaseState } from "./storage.js";
+import { saveToDatabase } from "./storage.js";
+import { onlineList, clientMap } from "./data.js";
 
 const PORT = process.env.PORT || 5691;
 
@@ -19,11 +21,12 @@ const io = new Server(server, {
 const logger = log4js.getLogger("app");
 
 app.use(express.static("static"))
+app.use(apiRouter)
 logger.level = process.env.LOG_LEVEL || "debug";
 
 // 初始化在线列表
-let onlineList = [];
-let clientMap = new Map();
+// let onlineList = [];
+// let clientMap = new Map();
 
 class Response {
     constructor(status, msg) {
@@ -32,39 +35,7 @@ class Response {
     }
 }
 
-app.get("/online", (req, res) => {
-    res.status(200).send({
-        online: onlineList.length,
-        user: onlineList
-    })
-})
 
-app.get("/history", (req, res) => {
-    if (!getDatabaseState()) {
-        res.status(500).send({
-            status: 500,
-            msg: "database is not ready",
-            data: null
-        })
-    }
-    if (!req.query.limit || isNaN(req.query.limit) || req.query.limit <= 0 || req.query.limit > 100) {
-        req.query.limit = 10;
-    }
-    loadHistory(req.query.limit).then((data) => {
-        res.status(200).send({
-            status: 200,
-            msg: "success",
-            data: data
-        })
-    }).catch((err) => {
-        logger.error(`database error: ${err}`)
-        res.status(500).send({
-            status: 500,
-            msg: "database error",
-            data: null
-        })
-    })
-})
 
 io.on("connection", (socket) => {
     logger.info(`A client connected, id: ${socket.id}`)
@@ -79,7 +50,7 @@ io.on("connection", (socket) => {
         }
         try {
             const { opt, args } = JSON.parse(data);
-            console.log(opt, args)
+            logger.trace(opt, args)
             if (opt == "signin") {
                 if (!args || !args.username) {
                     socket.emit("system", JSON.stringify(new Response(false, "username is empty.")))
@@ -107,8 +78,8 @@ io.on("connection", (socket) => {
             socket.emit("system", JSON.stringify(new Response(false, "data payload is invaild.")))
             return;
         }
-        console.log(clientMap)
-        console.log(onlineList)
+        logger.trace(clientMap)
+        logger.trace(onlineList)
     })
 
     socket.on("msg", data => {

data.js

@@ -0,0 +1,2 @@
+export var onlineList = [];
+export var clientMap = new Map();