###登录页面

//登录
 router.post("/api/login", (req, res) => {
     let {
         name,
         password
     } = req.body;

     let data = JSON.parse(fs.readFileSync('mock/user.json'));

     let flag = data.find(item => {
         return item.name === name && item.password === password;
     })

     if (flag) {
         res.send({ code: 1 })
     } else {
         res.send({ code: 0 })
     }
 })



 //注册
router.post("/api/register", (req, res) => {
    let {
        name,
        password
    } = req.body;

    let data = JSON.parse(fs.readFileSync('mock/user.json'));

    let flag = data.find(item => {
        return item.name !== name;
    })

    if (flag) {
        req.body.id = Math.random().toString().slice(2)
        data.push(req.body);
        fs.writeFileSync('mock/user.json', JSON.stringify(data))
        res.send({
            code: 1
        })
    } else {
        res.send({ code: 0 })
    }
})

//新增
router.post('/api/add', (req, res) => {
    let {
        name,
        address,
        tit
    } = req.body;
    req.body.id = Math.random().toString().slice(2);
    let data = JSON.parse(fs.readFileSync('mock/data.json'));

    let flag = data.find(item => {
        return item.name !== name;
    });
    if (flag) {
        data.push(req.body);
        res.send({
            data: fs.writeFileSync('mock/data.json', JSON.stringify(data)),
            code: 1
        })
    }

})

//编辑
router.post('/api/submit', (req, res) => {
    let {
        id
    } = req.body
    let data = JSON.parse(fs.readFileSync('mock/data.json'));

    let flag = data.find(item => {
        return item.id === id;
    })

    Object.assign(flag, req.body);
    fs.writeFileSync('mock/data.json', JSON.stringify(data));
    res.send({
        code: 1
    })


})

//删除
 router.post("/api/delete", (req, res) => {
     let {
         id
     } = req.body;

     let data = JSON.parse(fs.readFileSync('mock/data.json'));

     let flag = data.filter(item => {
         return item.id !== id
     })
     data = fs.writeFileSync('mock/data.json', JSON.stringify(flag))
     res.send({
         code: 1,
     })
 })


//渲染
function rander() {
            axios.post('/api/rander', {
                index,
                pagesize
            }).then(res => {
                indexMax = res.data.maxIndex;
                plate.innerHTML = res.data.data.map(item => {
                    return ` <li>
                                <p>${item.name}</p>
                                <p>${item.address}</p>
                                <p>${item.tit}</p>
                                <p>
                                    <span class="change" id=${item.id}>编辑</span>
                                    <span class="add" id=${item.id}>添加</span>
                                    <span class="del" id=${item.id}>删除</span>
                                </p>
                            </li>`
                }).join('')；

                //页码渲染
                let html = '';
                for (let i = 1; i <= res.data.maxIndex; i++) {
                    html += `<li>${i}</li>`
                };
                page.innerHTML = html;
                page.children[index].classList.add('active')
            })
        };