const express = require("express");
const app = express();

const express = require("express");
const singers = require("./singers.json").singers;
const app = express();
console.log(singers);
app.get("/singers/:id", (req, res) => {
    let id = req.params.id;
    let singer = singers.find((singer) => {
        if (singer.id == id) {
            res.send(singer.name);
        }
    });
});
app.listen(3000, () => {
    console.log("Server is running on port 3000");
});

const express = require("express");
const fs = require("fs");
const app = express();
const path = require("path");
function recordMiddleware(req, res, next) {
    let { url, ip } = req;
    console.log(`用户访问了${url}，IP地址为${ip}`);
    fs.appendFile(path.resolve(__dirname, "./access.log"), `${url} ${ip}\n`, (err) => {
        if (err) {
            console.log(err);
        }
    });
    next();
}
function checkcoode(req, res, next) {
    let { code } = req.query;
    if (code === "666") next();
    else res.send("验证码错误");
}
app.use(express.static(path.resolve(__dirname, "./")));
app.use(recordMiddleware);
//前台首页
app.get("/home", checkcoode, (req, res) => {
    res.send("首页你好");
});
app.get("/admin", checkcoode, (req, res) => {
    res.send("后台管理你好");
});
app.get("*", (req, res) => {
    res.send("404 Not Found");
});
app.listen(3000, () => {
    console.log("服务器启动成功，端口号为3000");
});
//后台首页

const express = require("express");
const app = express();
const path = require("path");
app.use((req, res, next) => {
    let reffer = req.get("Referrer");
    if (reffer) {
        let url = new URL(reffer);
        let hostname = url.hostname;
        console.log(hostname);
        if (hostname !== "127.0.0.1") {
            console.log("not 127");
            res.status = 404;
            res.end("Not Found");
        }
    }
    next();
});
app.use(express.static(path.resolve(__dirname, "./")));
app.listen(3000, () => {
    console.log("Server is running on port 3000");
});