const express = require("express");
const app = express();
const fs = require("fs");
app.listen("8080");

app.use(express.static("public"));
app.set("view engine", "ejs");


app.get("/", (req, res) => {
    res.render("index")
})

app.get("/detail", (req, res) => {
    let { id } = req.query;
    let data = JSON.parse(fs.readFileSync("mock/list.json"))
    let obj = data.find(item => +item.id === +id);
    console.log(obj)
    res.render("detail", obj)
})

app.get("/api/page", (req, res) => {
    // 获取下标和每页个数
    let { index, num } = req.query;
    // 读取数据
    fs.readFile("mock/list.json", (err, data) => {
        // 判断是否成功
        if (err) {
            res.send({ code: 0 })
            return;
        }
        // 转化JSON数据
        data = JSON.parse(data);
        // 返回数据
        res.send({
            code: 1,
            arr: data.slice(index * num, (+index + 1) * num),
            maxCode: Math.ceil(data.length / num)
        })
    })
})