/* eslint no-unused-vars: ["error", { "args": "none" }] */
'use strict';
const RegService = require('../models/reg-service');
const PhoneService = require('../models/phone-service');

// constrant
const CODE_REQUIRED = '请输入校验码';

// 短信登录 第一步： 展现页面
const step1 = (req, res, next) => {
    let template = 'sms/login';
    let viewData = {
        module: 'passport',
        page: 'sms-login',
        isPassportPage: true,
        headerText: '手机号码快捷登录',
        areaCode: '+86', // 默认的区号
        countrys: RegService.getAreaData() // 地区信息列表
    };

    res.render(template, viewData);
};

// 短信登录 第二步： 输入 校验码
const step2 = (req, res, next) => {
    const mobile = req.session.sms_login.mobile;
    const area = req.session.sms_login.area;

    const template = 'sms/check';
    const viewData = {
        module: 'passport',
        page: 'sms-check',
        isPassportPage: true,
        headerText: '手机号码快捷登录',
        interval: 60,
        mobile,
        area
    };

    res.render(template, viewData);
};

// 短信登录 第二步： 设置密码 (针对 改手机未注册用户)
const step3 = (req, res, next) => {

};

// 短信 登录
exports.loginPage = (req, res, next) => {
    let step = Number(req.query.step) || 1;

    switch (step) {
        case 2: step2(req, res, next); break;
        case 3: step3(req, res, next); break;
        case 1:
        default:
            step1(req, res, next);
    }
};

exports.token = (req, res, next) => {
    if (!req.xhr) {
        return next(404);
    }

    let area = req.query.area;
    let mobile = req.query.mobile;

    PhoneService.sendSMS({ mobile, area }).then(result => {
        if (result.code === 200) {
            req.session.sms_login = {
                area,
                mobile
            };

            result.redirect = '/passport/sms_login?step=2';
            res.json(result);
            return;
        }

        res.json(result);
    });
};

exports.check = (req, res, next) => {
    if (!req.xhr) {
        return next(404);
    }
    // TODO: 防御性

    let code = req.query.code || '';
    const mobile = req.session.sms_login.mobile;
    const area = req.session.sms_login.mobile;

    code = code.trim();
    if (!code) {
        res.json({
            code: 404,
            message: CODE_REQUIRED
        });
    }

    Promise.all([
        PhoneService.checkUserPhoneExist(mobile, area),
        PhoneService.verifySMS(mobile, area, code)
    ])
        .then(result => {
            let r1 = result[0] || {};
            let r2 = result[1] || {};
            let redirect;

            // 验证码 校验失败
            if (r2.code !== 200) {
                res.json(r2);
                return;
            }

            // 检测 手机号 是否注册 异常
            if (r1.code !== 200) {
                res.json(r1);
                return;
            }

            if (r1.data.is_register === 'Y') {
                redirect = '';
            } else {
                redirect = '/passport/sms_login?step=3';
            }

            res.json({
                code: 200,
                redirect
            });
        })
        .catch();
};

exports.password = (req, res, next) => {
    res.render('sms/password', {
        module: 'passport',
        page: 'sms-login',
        isPassportPage: true,
        headerText: '设置密码',
    });
};