/**
 * 找回密码
 * Created by Tao.Huang on 2016/6/12.
 */

'use strict';

const helpers = global.yoho.helpers;
const config = global.yoho.config;
const service = require('../models/back-service');
const passportHelper = require('../models/passport-helper');
const simpleHeaderModel = require('../../../doraemon/models/simple-header');
const _ = require('lodash');

/**
 * 找回密码主页面
 */
const index = (req, res, next) => {
    // 清除cookie
    res.clearCookie('_UID', {
        domain: config.cookieDomain
    });
    res.clearCookie('_TOKEN', {
        domain: config.cookieDomain
    });

    service.indexPageDataAsync()
        .then(result => {
            res.render('back/index', Object.assign({
                module: 'passport',
                page: 'back-index',
                simpleHeader: simpleHeaderModel.setSimpleHeaderData(),
                title: '找回密码'
            }, result));
        })
        .catch(next);
};

/**
 * 校验用户输入信息，是否是已经注册的用户
 */
const validateInputAPI = (req, res, next) => {
    let userInput = req.body.phoneNum || '';
    let areaCode = (req.body.area || '86').replace('+', '');

    service.validateEmailOrMobileAsync(userInput, areaCode)
        .then(result => {
            req.inputInfo = result;
            next();
        })
        .catch(err => {
            res.json({
                code: 400,
                message: err
            });
        });
};

/**
 * 校验用户输入信息，是否是已经注册的用户
 */
const validateInputPage = (req, res, next) => {
    let userInput = req.body.phoneNum || '';
    let areaCode = (req.body.area || '86').replace('+', '');

    service.validateEmailOrMobileAsync(userInput, areaCode)
        .then(result => {
            req.inputInfo = result;
            next();
        })
        .catch((err) => {
            res.json({
                code: 400,
                message: err
            });
        });
};

const getUserInfoAPI = (req, res, next) => {
    let inputInfo = req.inputInfo;

    req.session.type = 'back-step1';

    service.findUserAsync(inputInfo.type, inputInfo.phone, inputInfo.area)
        .then(result => {
            res.json(result);
        })
        .catch(next);
};

const fakeGetUserInfoAPI = (req, res) => {
    return res.json({code: 200, message: '验证成功'});
};

const sendCodePage = (req, res, next) => {
    let inputInfo = req.inputInfo;

    req.session.type = 'back-step1';
    service.sendCodeToUserAsync(inputInfo.type, inputInfo.phone, inputInfo.area)
        .then(result => {
            if (!(result.code && result.code === 200)) {
                return res.json({
                    code: 400,
                    message: '发送验证码错误',
                    data: {
                        refer: helpers.urlFormat('/passport/back/index')
                    }
                });
            }

            return next();
        })
        .catch(next);
};

const saveInSession = (req, res) => {
    if (req.session.type !== 'back-step1') {
        return res.json({
            code: 400,
            message: '未验证',
            data: {
                refer: helpers.urlFormat('/passport/back/index')
            }
        });
    }

    req.session.type = 'back-step2';

    switch (req.inputInfo.type) {
        case 'email':
            req.session.email = req.inputInfo.phone;
            return res.json({
                code: 200,
                data: {
                    refer: helpers.urlFormat('/passport/back/sendemail')
                }
            });
        case 'mobile':
            req.session.mobile = req.inputInfo.phone;
            req.session.area = req.inputInfo.area;
            req.session.captcha = req.body.verifyCode;

            return res.json({
                code: 200,
                data: {
                    refer: helpers.urlFormat('/passport/back/verification')
                }
            });
        default:
            return res.json({
                code: 500,
                data: {
                    refer: helpers.urlFormat('/passport/back/index')
                }
            });
    }
};

const sendBackMobileAPI = (req, res, next) => {
    let mobile = req.body.mobile || '';
    let area = req.body.area || '86';

    service.sendCodeToMobileAsync(area, mobile)
        .then(result => {
            res.json(result);
        })
        .catch(next);
};

const validateMobileAPI = (req, res, next) => {
    let mobile = req.body.mobile || '';
    const ERR = {code: 400, message: '验证失败'};

    if (req.session.type !== 'back-step3') {
        return res.json(ERR);
    }

    if (!passportHelper.validator.isMobile(mobile)) {
        return res.json(ERR);
    }

    next();
};

const validateEmailInSession = (req, res, next) => {
    let email = req.session.email || '';

    if (!email) {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    let isp = email.split('@')[1].toLowerCase();
    const mapperEmailISP = {
        'yoho.cn': 'http://exmail.qq.com/login'
    };

    req.body.emailUrl = mapperEmailISP[isp] || `http://mail.${isp}`;
    next();
};

const sendEmailPage = (req, res, next) => {
    if (req.session.type !== 'back-step2') {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    req.session.type = 'back-step3';

    passportHelper.getLeftBannerAsync()
        .then(result => {
            res.render('back/send-email', Object.assign({
                module: 'passport',
                page: 'back-send-email-ok',
                title: '邮件发送成功'
            }, {
                sendEmail: {
                    coverHref: result.url,
                    coverImg: result.img,
                    email: req.body.emailUrl
                }
            }));
        })
        .catch(next);

};

const validateCodeByEmailPage = (req, res, next) => {
    let code = req.query.code || '';

    if (!_.isEmpty(req.mobileAuth)) {
        return next();
    }

    service.checkEmailCodeAsync(code)
        .then(result => {
            if (!result) {
                return res.redirect(helpers.urlFormat('/passport/back/index'));
            }

            return next();
        })
        .catch(next);
};

const resetPasswordPage = (req, res, next) => {
    let code = req.query.code || '';

    passportHelper.getLeftBannerAsync()
        .then(result => {
            res.render('back/reset-pwd', Object.assign({
                module: 'passport',
                page: 'back-reset-pwd',
                simpleHeader: simpleHeaderModel.setSimpleHeaderData(),
                title: '重置密码'
            }, {
                resetPwd: Object.assign({
                    coverHref: result.url,
                    coverImg: result.img,
                    code: code
                }, req.mobileAuth)
            }));
        })
        .catch(next);
};

const verifyCodeByMobilePage = (req, res, next) => {
    if (req.session.type !== 'back-step2') {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    req.session.type = 'back-step3';

    passportHelper.getLeftBannerAsync()
        .then(result => {
            res.render('back/verification', Object.assign({
                module: 'passport',
                page: 'back-verify-mobile-code',
                simpleHeader: simpleHeaderModel.setSimpleHeaderData(),
                title: '手机验证'
            }, {
                verification: {
                    coverHref: result.url,
                    coverImg: result.img,
                    mobile: req.body.mobile,
                    area: req.body.area,
                    verifyCode: req.body.verifyCode
                }
            }));
        })
        .catch(next);
};

const validateSuccessStatusPage = (req, res, next) => {
    let successType = req.session.successType || '';

    if (!successType) {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    delete req.session.successType;
    next();
};

const resetPwdSuccessPage = (req, res, next) => {
    passportHelper.getLeftBannerAsync()
        .then(result => {
            res.render('back/reset-success', Object.assign({
                module: 'passport',
                page: 'back-index',
                simpleHeader: simpleHeaderModel.setSimpleHeaderData(),
                title: '重置密码成功'
            }, {
                resetSuccess: {
                    coverHref: result.url,
                    coverImg: result.img
                }
            }));
        })
        .catch(next);
};

const verifyCodeByMobileAPI = (req, res) => {
    let mobile = req.body.mobile || '';
    let area = req.body.area || '86';
    let mobileCode = req.body.code || '';
    const ERR = {
        code: 400,
        message: '验证码错误！',
        data: helpers.urlFormat('/passport/back/index')
    };

    const session = req.session;

    if (!mobileCode || mobile !== session.mobile || area !== session.area) {
        return res.json(ERR);
    }

    if (session.type !== 'back-step3') {
        return res.json(ERR);
    }

    service.verifyCodyByMobileAsync(area, mobile, mobileCode)
        .then(result => {
            res.json(result);
        })
        .catch(()=> {
            res.json(ERR);
        });
};

const validateExistCodePage = (req, res, next) => {
    let code = req.query.code || req.body.code;

    if (!code) {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    next();
};

const validateCodeByMobilePage = (req, res, next) => {
    let code = req.query.code || req.body.code;
    let mobile = req.query.mobile || req.body.mobile;
    let area = req.query.area || req.body.area;
    let token = req.query.token || req.body.token;
    let createdAt = req.query.createdAt || req.body.createdAt;

    if (!mobile) {
        req.mobileAuth = {};
        return next();
    }

    let data = {
        mobile: mobile,
        area: area,
        token: token,
        createdAt: createdAt
    };

    code = new Buffer(code, 'base64').toString();
    req.mobileAuth = service.authRequest(data, code);

    next();
};

const validatePwdPage = (req, res, next) => {
    let pwd = req.body.pwd || '';

    if (!passportHelper.validator.isPassword(pwd)) {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    next();
};

const updatePwdAPI = (req, res, next) => {
    let code = req.body.code || '';
    let mobileAuth = req.mobileAuth || {};
    let newPassword = req.body.pwd || '';

    service.updatePwdAsync(code, mobileAuth, newPassword)
        .then(result => {
            if (result.status) {
                req.session.successType = result.type;
                res.redirect(helpers.urlFormat('/passport/back/resetSuccess'));
            } else {
                res.redirect(helpers.urlFormat('/passport/back/index'));
            }
        })
        .catch(next);
};

const validateMobileInSession = (req, res, next) => {
    req.body.mobile = req.session.mobile || '';
    req.body.area = req.session.area || '';

    if (!req.body.mobile) {
        return res.redirect(helpers.urlFormat('/passport/back/index'));
    }

    next();
};

const weakPasswordPage = (req, res, next) => {
    let refer = req.query.refer || helpers.urlFormat('/');

    if (!req.session.CSToken && !req.session.canSkip) {
        return res.redirect(refer);
    }

    passportHelper.getLeftBannerAsync().then(result => {
        res.render('back/weak-pwd', Object.assign({
            module: 'passport',
            page: 'back-weak-pwd',
            simpleHeader: simpleHeaderModel.setSimpleHeaderData(),
            title: '重置登录密码'
        }, {
            resetPwd: {
                coverHref: result.url,
                coverImg: result.img,
                refer: refer,
                isCanSkip: req.session.canSkip === 'Y'
            }
        }));
    }).catch(next);
};

const weakPwdSuccessPage = (req, res, next) => {
    let refer = req.query.refer || helpers.urlFormat('/');

    passportHelper.getLeftBannerAsync()
        .then(result => {
            res.render('back/weak-success', Object.assign({
                module: 'passport',
                page: 'back-index',
                simpleHeader: simpleHeaderModel.setSimpleHeaderData(),
                title: '重置密码成功'
            }, {
                resetSuccess: {
                    coverHref: result.url,
                    coverImg: result.img,
                    refer: helpers.urlFormat('/signin.html', {
                        refer: refer
                    })
                }
            }));
        })
        .catch(next);
};

const modPwdByCodeAPI = (req, res, next) => {
    let body = req.body;

    service.modPwdByCodeAsync({
        uid: req.user.uid,
        oldPwd: body.oldPwd,
        newPwd: body.newPwd,
        token: req.session.CSToken
    }).then(d => {

        if (d.code === 200 && req.session) {
            delete req.session.CSToken;
            delete req.session.canSkip;
        }

        res.json(d);
    }).catch(next);
};

module.exports = {
    index,                         // 首页
    fakeGetUserInfoAPI,            // 通过邮箱或手机号获得用户信息
    getUserInfoAPI,                // 通过邮箱或手机号获得用户信息
    sendCodePage,                  // 发送验证码到邮箱或者手机，然后跳转页面
    saveInSession,                 // 保存状态到session中

    sendEmailPage,                 // 发送邮件成功的页面

    verifyCodeByMobilePage,        // 验证手机验证码的页面
    verifyCodeByMobileAPI,         // 验证手机验证码
    sendBackMobileAPI,             // 重新发送验证码到手机

    resetPasswordPage,             // 重设密码页面
    updatePwdAPI,                  // 重设密码接口
    validateMobileAPI,             // 验证手机号是否合法
    resetPwdSuccessPage,           // 重设密码成功页面

    validateInputAPI,              // 验证用户输入的邮箱或者手机是否合法，返回是json
    validateInputPage,             // 验证用户输入的邮箱或者手机是否合法，跳转是页面

    validateEmailInSession,        // 验证邮箱是否在session中
    validateMobileInSession,       // 验证手机是否在session中

    validateCodeByEmailPage,       // 验证邮箱验证码
    validateCodeByMobilePage,      // 验证手机验证码

    validateSuccessStatusPage,     // 验证重设密码状态
    validateExistCodePage,         // 验证参数是否存在code

    validatePwdPage,                // 验证密码是否合法

    weakPasswordPage,               // 弱密码页面
    weakPwdSuccessPage,             // 弱密码重置成功页面
    modPwdByCodeAPI                 // 弱密码重置接口
};