const express = require('express')
const router = express.Router()
const fs = require('fs')
const data = require('../data')

const Lock = require('async-lock');
const lock = new Lock();

router.get('/', (req, res) => {
    res.render('index', {})
})

router.get('/info', (req, res) => {
    res.render('info', {})
})

router.get('/admin', (req, res) => {
    res.render('admin', {})
})

router.get('/get_reserve_info', (req, res) => {
    json = data.get_data()
    res.write(JSON.stringify(json['current_week']))
    res.end()
})

router.post('/clear', (req, res)=> {
    lock.acquire('sharedVariable', (done) => {

        result = {
            code: 0,
            message: ""
        }

        if(req.body.password != "wx6MKPBy") {
            result.code = -1
            result.message = "错误的管理密码！"
        } else {
            data.clear()

            json = data.get_data()

            result.code = 0;
            result.message = `成功清除所有预约!\n干事预约密码: ${json.ganshi}\n乐队预约密码: ${json.yuedui}\n 社员预约密码: ${json.sheyuan}`
        }
        
        res.json(result).end()
        done();
    });
})

router.post('/unreserve', (req, res)=> {
    lock.acquire('sharedVariable', (done) => {

        result = {
            code: 0,
            message: ""
        }

        let day = req.body.day;
        let time = req.body.time;

        let errors = [];

        if (!day || day < 1 || day > 7) {
            errors.push('日期应该是1到7之间的数字');
        }
    
        if (!time || time < 1 || time > 6) {
            errors.push('时间应该是1到6之间的数字');
        }

        if(errors.length != 0) {
            error_message = ""

            for(let i=0; i<errors.length; i++) {
                error_message += (errors[i] + '\n')
            }

            result.code = -1;
            result.message = error_message
        } else {

            if(req.body.password != "wx6MKPBy") {
                result.code = -1
                result.message = "错误的管理密码！"
            } else {

                result.code = 0;
                result.message = `取消预约成功!\n`
                write_data = data.get_data()
                write_data['current_week'][`${day}-${time}`].name = "";
                write_data['current_week'][`${day}-${time}`].phone = "";
                write_data['current_week'][`${day}-${time}`].type = "";
                fs.writeFileSync("./data/current.json", JSON.stringify(write_data))
            }
    
        }
        
        
        res.json(result).end()
        done();
    });
})

router.post('/reserve', (req, res) => {
    lock.acquire('sharedVariable', (done) => {
        let day = req.body.day;
        let time = req.body.time;
        let password = req.body.password;
        let name = req.body.name;
        let phone = req.body.phone;

        let errors = [];

        if (!day || day < 1 || day > 7) {
            errors.push('日期应该是1到7之间的数字');
        }

        console.log(req.body)
    
        if (!time || time < 1 || time > 6) {
            errors.push('时间应该是1到6之间的数字');
        }
    
        if (!password || password.trim().length === 0) {
            errors.push('密码不能为空');
        }
    
        if (!name || name.trim().length === 0) {
            errors.push('姓名不能为空');
        }
    
        if (!phone || phone.length !== 11 || !/^\d+$/.test(phone)) {
            errors.push('手机号码应该是11位数字');
        }

        result = {
            code: 0,
            message: ""
        }

        if(errors.length != 0) {
            error_message = ""

            for(let i=0; i<errors.length; i++) {
                error_message += (errors[i] + '\n')
            }

            result.code = -1;
            result.message = error_message
        } else {
            let dt = data.get_data()
            let json = data.get_data()['current_week'][`${day}-${time}`]

            let type = ""
            if(password == dt.ganshi) {
                type = "干事"
            }
            if(password == dt.yuedui) {
                type = "乐队"
            }
            if(password == dt.sheyuan) {
                type = "社员"
            }

            if(json.name == "") {
                if(type) {
                    result.code = 0;
                    result.message = `预约成功\n预约人: ${name}\n联系方式: ${phone}\n身份:  ${type}`
                    write_data = data.get_data()
                    write_data['current_week'][`${day}-${time}`].name = name;
                    write_data['current_week'][`${day}-${time}`].phone = phone;
                    write_data['current_week'][`${day}-${time}`].type = type;
                    fs.writeFileSync("./data/current.json", JSON.stringify(write_data))
                } else {
                    result.code = -1;
                    result.message = "预约密码错误"
                }
            } else {
                result.code = -1;
                result.message = "该时间段已经被预约"
            }
        }
        
        res.json(result).end()
        done();
    });
});

module.exports = router