const User = require('../models/User');
const {body, validationResult} = require('express-validator');
const bcrypt = require('bcryptjs');
const jwt = require('jsonwebtoken');
const crypto = require('crypto');
const sharp = require('sharp');
const {secretKey} = require('./../authentication');
const {_sr} = require('../plugins/serverResponses');
const {res404, res500, hasWhiteSpaces, isLatinCharactersWithSymbol, generateRandomDigits} = require('../plugins/controllersHelperFunctions');
const fs = require('fs');
const nodemailer = require('nodemailer');
const Category = require('../models/Category');
const Logger = require('../models/Logger')
////// variables
const profileWidth = 500;
const profileHeight = 500;
const profileQuality = 100;
const hostURL = 'localhost:6688';
const limit = 20;
const select = '-password -token';

/** @todo add private to query */

/** auth --------------------------------------------- */
/////////////////////////////////////////////////////////////////////// login
module.exports.login = [
  [
    body('username')
       .if((value, {req}) => {
         return req.body.password && req.body.password.length >= 4
       })
       .custom((value, {req}) => {
         var test = value;
         return User.findOne({username: value})
            .then(user => {
              if (!user) return Promise.reject(_sr['fa'].not_found.password)
              else return true
            })
       }),

    body('password')
       .notEmpty().withMessage(_sr['fa'].required.password)
       .bail()
       .isLength({min: 4}).withMessage(_sr['fa'].min_char.min4),

    body('remember_me')
       .exists().withMessage(_sr['fa'].required.remember_me)
       .bail()
       .isBoolean().withMessage(_sr['fa'].format.boolean)
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      var {username, password, remember_me} = req.body;

      /** get user */
      var user = await User.findOne({$or: [{username: username}, {email: username}]});
      const logger = await Logger.findOne({user:user._id})
      if (!user.registration_done) {
        return res.status(403).json({message: `اکانت شما غیرفعال می باشد لطفا با ادمین تماس بگیرید`});
      }
      const isMatch = await bcrypt.compare(password,user.password)

      /**check user */
      if (user) {
        /** check password */

        if (isMatch) {
          if(logger){
            await Logger.findOneAndUpdate({user:user._id},{$set:{LastLogin:new Date()}},{new:true})
          }else {
            const newLogger = new Logger({
              user:user,
              LastLogin:new Date()
            })
            await newLogger.save();
          }
          /** if have token and it true show result else generate new token */
          if (user.token) {
            jwt.verify(user.token.replace(/^Bearer\s/, ''), secretKey, async (err, decoeded) => {
              if (err || !decoeded) {
                /** generate new token */
                var token = await jwt.sign({_id: user._id}, secretKey, {expiresIn: remember_me ? '7d' : '1h'});
                user.token = token;
                await user.save();
                return res.json({token: user.token});
              } else {
                return res.json({token: user.token});
              }
            });
          } else {
            /** generate new token */
            var token = await jwt.sign({_id: user._id}, secretKey, {expiresIn: remember_me ? '7d' : '1h'});
            user.token = token;
            await user.save();
            return res.json({token: user.token});
          }
        } else {
          return res.status(422).json({validation: {username: {msg: _sr['fa'].not_found.password}}});
        }
      } else {
        return res.status(422).json({validation: {username: {msg: _sr['fa'].not_found.password}}});
      }
    } catch (error) {
      return res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// logout
module.exports.logout = [
  async (req, res) => {
    const token = req.headers.authorization?.replace(/^Bearer\s/, '');
    if (token) {
      User.findOneAndUpdate({token: token}, {token: null}, (err, oldData) => {
        if (err || !oldData) res.status(401).json({message: 'Your not logged in'})
        else return res.json({message: 'You are logged out.'})
      })
    } else {
      return res.status(401).json({message: 'Your not logged in'})
    }
  }
]

/////////////////////////////////////////////////////////////////////// get user
module.exports.getuser = [
  async (req, res) => {
    const token = req.headers.authorization?.replace(/^Bearer\s/, '');
    // check if token is not destroyed
    var user = await User.findOne({token: token}).select('-password');

    if (!user) {
      return res.status(401).json({message: 'unauthorized'});
    }

    if (!user.registration_done) {
      return res.status(401).json({message: `اکانت شما غیرفعال می باشد لطفا با ادمین تماس بگیرید`});
    }

    //verifies secret and checks if the token is expired
    try {
      var checkToken = await jwt.verify(user.token.replace(/^Bearer\s/, ''), secretKey);

      if (!checkToken) {
        return res.status(401).json({message: 'unauthorized'});
      }

      return res.json({user: user});
    } catch (error) {
      return res.status(401).json({message: 'unauthorized'});
    }
  }
]

/** end auth --------------------------------------------- */

/////////////////////////////////////////////////////////////////////// admin
module.exports.registerAdmin = [
  [
    body('firstName')
       .notEmpty().withMessage(_sr['fa'].required.first_name),

    body('lastName')
       .notEmpty().withMessage(_sr['fa'].required.last_name),

    body('mobileNumber')
       .if((value, {req}) => {
         return req.body.mobileNumber
       })
       .custom((value, {req}) => {
         if (!_.isEmpty(value) && !lodash.isNumeric(value)) {
           return Promise.reject(_sr['fa'].format.number);
         }
         return User.findOne({mobileNumber: value})
            .then(user => {
              if (user) return Promise.reject(_sr['fa'].duplicated.phoneNumber);
              else return true
            })
       }),

    // body('email')
    //    .optional().isEmail().withMessage(_sr['fa'].format.email)
    //    .if((value, {req}) => {
    //      return req.body.email
    //    })
    //    .custom((value, {req}) => {
    //      return User.findOne({email: value})
    //         .then(user => {
    //           if (user) return Promise.reject(_sr['fa'].duplicated.email)
    //           else return true
    //         })
    //    }),

    body('username')
       .isLength({min: 4}).withMessage(_sr['fa'].min_char.min4)
       .bail()
       .custom((value, {req}) => {
         if (hasWhiteSpaces(value)) return Promise.reject(_sr['fa'].response.whiteSpace)
         else return true
       })
       .bail()
       .custom((value, {req}) => {
         if (!isLatinCharactersWithSymbol(value)) return Promise.reject(_sr['fa'].response.latinChar)
         else return true
       })
       .bail()
       .custom((value, {req}) => {
         return User.findOne({username: value})
            .then(user => {
              if (user) return Promise.reject(_sr['fa'].duplicated.username)
              else return true
            })
       }),

    body('password')
       .isLength({min: 4}).withMessage(_sr['fa'].min_char.min4)
       .custom((value, {req}) => {
         if (value === req.body.password_confirmation) return Promise.resolve()
         else return Promise.reject(_sr['fa'].response.passwords_not_match)
       }),

    body('permissions')
       .if((value, {req}) => {
         return req.body.specialPermissions;
       })
       .custom((value, {req}) => {
         var permission = _.isString(value) ? JSON.parse(value) : value;
         if (!_.isArray(permission)) {
           return Promise.reject(`این فیلد باید از نوع آرایه باشد`);
         }

         if (!permission.length) {
           return Promise.reject(`شما باید یک دسترسی انتخاب کنید`);
         }

         if (permission.length && !permission.includes('superAdmin') && (!permission.includes('news') && !permission.includes('categories'))) {
           return Promise.reject(`شما باید همراه با دسترسی مخصوص، دسترسی مدیریت صفحات یا اخبار را ارسال کنید`);
         } else {
           return true
         }
       }),


    body('specialPermissions')
       .optional()
       .custom((value, {req}) => {
         var specialPermissions = _.isString(value) && !_.isEmpty(value) ? JSON.parse(value) : value;
         if (!_.isArray(specialPermissions)) {
           return Promise.reject(`این فیلد باید از نوع آرایه باشد`);
         }

         return true
       }),

    body('portals')
       .custom((value, {req}) => {
         var portals = _.isString(value) ? JSON.parse(value) : value;
         if (!_.isArray(portals)) {
           return Promise.reject(`این فیلد باید از نوع آرایه باشد`);
         }

         if (!portals.length) {
           return Promise.reject(`شما باید محدوده دسترسی را مشخص کنید`);
         }

         let isValid = portals.every((item) => {
           return portal.includes(item);
         });

         if (isValid) {
           return true;
         } else {
           return Promise.reject(`${_sr['fa'].optional.onlyValid} => ${portal}`);
         }
       }),

    body('registration_done')
       .isBoolean().withMessage(_sr['fa'].format.boolean),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      var {
        username,
        password,
        firstName,
        lastName,
        email,
        mobileNumber,
        permissions,
        specialPermissions,
        registration_done,
        portals
      } = req.body;

      /** this code fix problem with array in form data */
      permissions = _.isString(permissions) ? JSON.parse(permissions) : permissions;
      specialPermissions = _.isString(specialPermissions) ? JSON.parse(specialPermissions) : specialPermissions;
      portals = _.isString(portals) ? JSON.parse(portals) : portals;

      var data = {
        username,
        firstName,
        lastName,
        email,
        mobileNumber,
        permissions,
        registration_done,
        private: false,
        _creator: req.user?._id || null,
        _updatedBy: req.user?._id || null,
        specialPermissions: permissions.includes('superAdmin') ? [] : specialPermissions,
        portals: [...new Set(portals)]
      };

      /**
       * if we have pic upload to server
       */
      if (req.files && req.files.profilePic) {
        const image = req.files.profilePic;
        if (!_sr.supportedImageFormats.includes(image.mimetype.split('/')[1])) {
          return res.status(422).json({validation: {profilePic: {msg: _sr['fa'].format.image}}});
        }
        const imageName = 'user_' + Date.now() + '_' + username + '.' + image.mimetype.split('/')[1];
        data.profilePic = imageName
        try {
          const target = sharp(image.data)
          await target
             .resize(profileWidth, profileHeight, {
               fit: 'cover'
             })
             .jpeg({
               quality: profileQuality
             })
             .toFile(`./static/uploads/images/users/${imageName}`)
        } catch (e) {
          return res500(res, e?.message)
        }
      }

      /**
       * generate salt
       */
      var salt = bcrypt.genSaltSync(10);

      /**
       * hash password with salt
       */
      var hashPassword = bcrypt.hashSync(password, salt);

      if (!hashPassword) {
        return res500(res, `error in hash`);
      }

      data.password = hashPassword;

      /**
       * create new admin
       */
      const newAdmin = await User.create(data);

      /**
       * if we have error show him
       */
      if (!newAdmin) {
        return res500(`error in register admin`);
      }

      /**
       * show result
       */
      return res.status(201).json({
        message: _sr['fa'].response.success_save
      })

    } catch (error) {
      return res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// get user
module.exports.getUserByAdmin = [
  async (req, res) => {
    try {
      const userId = req.params.id;

      /** get one user */
      const user = await User.findById(userId).populate('specialPermissions').select(select);

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      /** show result */
      return res.json(user);

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// get all user
module.exports.getAllUsers = [
  async (req, res) => {
    try {

      /** get all user */
      const users = await User.paginate({private: false}, {page: req.query.page, limit, select});

      /** if not exist show message to client */
      if (!users) {
        return res500(res, `مشکلی در گرفتن اطلاعات پیش آمده لطفا دوباره تلاش کنید`);
      }

      /** show result */
      return res.json(users);

    } catch (error) {
      return  res500(res, error?.message);
    }
  }
]

module.exports.changeUserStatus = [
  async (req, res) => {
    try {

      const userId = req.params.id

      let user = await User.findOne({private: false , _id : userId});

      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      user.registration_done = !user.registration_done;

      user.save();

      /** show result */
      return res.json(_sr['fa'].response.success_save);

    } catch (error) {
      return res500(res, `مشکلی در اجرای درخواست شما بوجود امده است`);
    }
  }
]

/////////////////////////////////////////////////////////////////////// delete one user
module.exports.deleteOneUser = [
  async (req, res) => {
    try {
      const userId = req.params.id;

      /** get one user */
      const user = await User.findOne({_id: userId});

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      if (user.private) {
        return res.status(403).json({message: `شما نمیتوانید این کاربر را حذف کنید`});
      }

      /**
       * if exist old pic delete it from file
       */
      if (user.profilePic) {
        var oldPic = `./static${user.profilePic}`;

        if (fs.existsSync(oldPic)) {
          fs.unlink(oldPic, (err) => {
            if (err) return res500(res, err?.message);
          });
        }
      }

      /** delete user */
      await user.deleteOne();

      /** show result */
      return res.json(user);

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// update user
module.exports.updateUser = [
  [
    body('firstName')
       .notEmpty().withMessage(_sr['fa'].required.first_name),

    body('lastName')
       .notEmpty().withMessage(_sr['fa'].required.last_name),

    body('mobileNumber')
       .if((value, {req}) => {
         return req.body.mobileNumber
       })
       .custom((value, {req}) => {
         if (!_.isEmpty(value) && !lodash.isNumeric(value)) {
           return Promise.reject(_sr['fa'].format.number);
         }
         return true;
       }),

    // body('email')
    //    .optional().isEmail().withMessage(_sr['fa'].format.email),

    body('permissions')
       .if((value, {req}) => {
         return req.body.specialPermissions;
       })
       .custom((value, {req}) => {
         let permission = _.isString(value) ? JSON.parse(value) : value;
         let specialPermissions = _.isString(req.body.specialPermissions) ? JSON.parse(req.body.specialPermissions) : req.body.specialPermissions;
         if (!_.isArray(permission)) {
           return Promise.reject(`این فیلد باید از نوع آرایه باشد`);
         }

         if (!permission.length) {
           return Promise.reject(`شما باید یک دسترسی انتخاب کنید`);
         }

         if (specialPermissions.length !== 0 && !permission.includes('superAdmin') && (!permission.includes('news') && !permission.includes('categories'))) {
           return Promise.reject(`شما باید همراه با دسترسی مخصوص، دسترسی مدیریت صفحات یا اخبار را ارسال کنید`);
         } else {
           return true
         }
       }),


    body('specialPermissions')
       .optional()
       .custom((value, {req}) => {
         var specialPermissions = _.isString(value) && !_.isEmpty(value) ? JSON.parse(value) : value;
         if (!_.isArray(specialPermissions)) {
           return Promise.reject(`این فیلد باید از نوع آرایه باشد`);
         }

         return true
       }),

    body('portals')
       .custom((value, {req}) => {
         var portals = _.isString(value) ? JSON.parse(value) : value;
         if (!_.isArray(portals)) {
           return Promise.reject(`این فیلد باید از نوع آرایه باشد`);
         }

         if (!portals.length) {
           return Promise.reject(`شما باید محدوده دسترسی را مشخص کنید`);
         }

         let isValid = portals.every((item) => {
           return portal.includes(item);
         });

         if (isValid) {
           return true;
         } else {
           return Promise.reject(`${_sr['fa'].optional.onlyValid} => ${portal}`);
         }
       }),

    body('registration_done')
       .isBoolean().withMessage(_sr['fa'].format.boolean),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      const userId = req.params.id;

      var {
        firstName,
        lastName,
        email,
        mobileNumber,
        permissions,
        specialPermissions,
        registration_done,
        portals
      } = req.body;

      /** this code fix problem with array in form data */
      permissions = _.isString(permissions) ? JSON.parse(permissions) : permissions;
      specialPermissions = _.isString(specialPermissions) ? JSON.parse(specialPermissions) : specialPermissions;
      portals = _.isString(portals) ? JSON.parse(portals) : portals;

      /** get one user */
      var user = await User.findById(userId);

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      if (!user.private && !req.user.private) {
        return res.status(403).json({message: `شما نمیتوانید این کاربر را آپدیت کنید`});
      }

      /** check new email is dupllicate or not */
      if (user.email !== email) {
        var checkDupplicate = await User.find({email: email});

        if (checkDupplicate.length) {
          return res.status(422).json({validation: {email: {msg: `${_sr['fa'].duplicated.email}`}}});
        }
      }
      /** check new mobileNumber is dupllicate or not */
      if (user.mobileNumber !== mobileNumber) {
        var checkDupplicate = await User.find({mobileNumber: mobileNumber});

        if (checkDupplicate.length) {
          return res.status(422).json({validation: {mobileNumber: {msg: `${_sr['fa'].duplicated.phoneNumber}`}}});
        }
      }

      user.firstName = firstName;
      user.lastName = lastName;
      user.password = user.password;
      user.scope = user.scope;
      user.token = user.token;
      user.mobileNumber = mobileNumber;
      user.email = email;
      user.registration_done = registration_done;
      user._creator = req.user._id;
      user.username = user.username;
      user.permissions = permissions;
      user.specialPermissions = permissions?.includes('superAdmin') ? [] : specialPermissions;
      user.private = user.private;
      user.portals = [...new Set(portals)]

      if (req.files && req.files.profilePic) {
        const image = req.files.profilePic;
        if (!_sr.supportedImageFormats.includes(image.mimetype.split('/')[1])) {
          return res.status(422).json({validation: {profilePic: {msg: _sr['fa'].format.image}}});
        }
        const imageName = 'user_' + Date.now() + '_' + user.username + '.' + image.mimetype.split('/')[1];

        try {
          const target = sharp(image.data)
          await target
             .resize(profileWidth, profileHeight, {
               fit: 'cover'
             })
             .jpeg({
               quality: profileQuality
             })
             .toFile(`./static/uploads/images/users/${imageName}`);

          /**
           * if exist old pic delete it from file
           */
          if (user.profilePic) {
            var oldPic = `./static${user.profilePic}`;

            if (fs.existsSync(oldPic)) {
              fs.unlink(oldPic, (err) => {
                if (err) return res500(res, err?.message);
              });
            }
          }

        } catch (e) {
          return res500(res, e?.message);
        }

        user.profilePic = imageName;
      }

      await user.save();

      /** show result */
      return res.json(user);

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// change password
module.exports.changePassword = [
  [
    body('password')
       .isLength({min: 4}).withMessage(_sr['fa'].min_char.min4)
       .custom((value, {req}) => {
         if (value === req.body.password_confirmation) return Promise.resolve()
         else return Promise.reject(_sr['fa'].response.passwords_not_match)
       }),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      const userId = req.params.id;

      const password = req.body.password;

      /** get one user */
      var user = await User.findById(userId);

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      if (!user.private && !req.user.private) {
        return res.status(403).json({message: `شما نمی توانید رمز عبور این کاربر را تغییر دهید`});
      }

      /**
       * generate salt
       */
      var salt = bcrypt.genSaltSync(10);

      /**
       * hash password with salt
       */
      var hashPassword = bcrypt.hashSync(password, salt);

      if (!hashPassword) {
        return res500(res, `error in hash`);
      }

      user.password = hashPassword;
      user.token = null

      await user.save();

      /** show result */
      return res.json({message: _sr['fa'].response.success_save});

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// get profile(get self)
module.exports.getProfile = [
  async (req, res) => {
    try {
      const userId = req.user._id;

      /** get one user */
      const user = await User.findById(userId).select(select);

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      /** show result */
      return res.json(user);

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// update profile(get self)
module.exports.updateProfile = [
  [
    body('firstName')
       .notEmpty().withMessage(_sr['fa'].required.first_name),

    body('lastName')
       .notEmpty().withMessage(_sr['fa'].required.last_name),

    body('mobileNumber')
       .isNumeric().withMessage(_sr['fa'].format.number),

    // body('email')
    //    .isEmail().withMessage(_sr['fa'].format.email),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      const userId = req.user._id;

      const {
        firstName,
        lastName,
        email,
        mobileNumber,
      } = req.body;

      /** get one user */
      var user = await User.findById(userId);

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      /** check new email is dupllicate or not */
      if (user.email != email) {
        var checkDupplicate = await User.find({email: email});

        if (checkDupplicate.length) {
          return res.status(422).json({validation: {email: {msg: `${_sr['fa'].duplicated.email}`}}});
        }
      }
      /** check new mobileNumber is dupllicate or not */
      if (user.mobileNumber != mobileNumber) {
        var checkDupplicate = await User.find({mobileNumber: mobileNumber});

        if (checkDupplicate.length) {
          return res.status(422).json({validation: {mobileNumber: {msg: `${_sr['fa'].duplicated.phoneNumber}`}}});
        }
      }

      user.firstName = firstName;
      user.lastName = lastName;
      user.password = user.password;
      user.scope = user.scope;
      user.token = user.token;
      user.mobileNumber = mobileNumber;
      user.email = email;
      user.registration_done = user.registration_done;
      user._creator = req.user._id;
      user.username = user.username;
      user.permissions = user.permissions;
      user.specialPermissions = user.specialPermissions;
      user.private = user.private;

      /** if exist a picture */
      if (req.files && req.files.profilePic) {
        const image = req.files.profilePic;
        if (!_sr.supportedImageFormats.includes(image.mimetype.split('/')[1])) {
          return res.status(422).json({validation: {profilePic: {msg: _sr['fa'].format.image}}});
        }
        const imageName = 'user_' + Date.now() + '_' + user.username + '.' + image.mimetype.split('/')[1];

        try {
          const target = sharp(image.data)
          await target
             .resize(profileWidth, profileHeight, {
               fit: 'cover'
             })
             .jpeg({
               quality: profileQuality
             })
             .toFile(`./static/uploads/images/users/${imageName}`);

          /**
           * if exist old pic delete it from file
           */
          if (user.profilePic) {
            var oldPic = `./static${user.profilePic}`;

            if (fs.existsSync(oldPic)) {
              fs.unlink(oldPic, (err) => {
                if (err) return res500(res, err?.message);
              });
            }
          }

        } catch (e) {
          return res500(res, e?.message);
        }

        user.profilePic = imageName;
      }

      await user.save();

      /** show result */
      return res.json(user);

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// change password (profile)
module.exports.changePasswordProfile = [
  [
    body('password')
       .isLength({min: 4}).withMessage(_sr['fa'].min_char.min4)
       .custom((value, {req}) => {
         if (value === req.body.password_confirmation) return Promise.resolve()
         else return Promise.reject(_sr['fa'].response.passwords_not_match)
       }),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      const userId = req.user._id;

      const password = req.body.password;

      /** get one user */
      var user = await User.findById(userId);

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کاربر مورد نظر پیدا نشد`);
      }

      /**
       * generate salt
       */
      var salt = bcrypt.genSaltSync(10);

      /**
       * hash password with salt
       */
      var hashPassword = bcrypt.hashSync(password, salt);

      if (!hashPassword) {
        return res500(res, `مشکلی در تغییر پسورد پیش آمده است`);
      }

      user.password = hashPassword;
      user.token = null

      await user.save();

      /** show result */
      return res.json({message: _sr['fa'].response.success_save});

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// forget password generate token
module.exports.forgetPassGenerateToken = [
  [
    body('email')
       .optional().isEmail().withMessage(_sr['fa'].format.email)
       .if((value, {req}) => {
         return req.body.email
       })
       .custom((value, {req}) => {
         return User.findOne({email: value})
            .then(user => {
              if (!user) return Promise.reject(_sr['fa'].not_found.email)
              else return true
            })
       }),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()})

    try {
      const email = req.body.email;

      /** get one user */
      var user = await User.findOne({email: email});

      /** if not exist show message to client */
      if (!user) {
        return res404(res, `کابر مورد نظر پیدا نشد`);
      }

      const token = crypto.randomBytes(20).toString('hex');


      //////////////////////////////////////////////////////////////////////////////////////////////////////////////////


      let transporter = nodemailer.createTransport({
        host: "www.rubynaturalco.com",
        port: 587,
        secure: false, // true for 465, false for other ports
        auth: {
          user: 'recovery@rubynaturalco.com',
          pass: 'jd-m2?3ao?b('
        },
        tls: {
          rejectUnauthorized: false
        }
      })

      const emailHTMLTemplate = `
              <div  style="direction: rtl;background-color: #065495;overflow: hidden;">
              <div style="width: 50%;border-radius: 10px;margin: 150px auto;background: #fff;text-align: center;padding: 20px;box-shadow: 0 15px 30px #000;">
              <H1 style="color: #000;">برای بازیابی کلمه عبور خود روی لینک زیر کلیک کنید.</H1>
              <div style="text-align: center;margin-top: 20px;">
              <a href="http://${hostURL}/auth/resetpass-newpass/${token}"
              target="_blank"
              style="display: inline-block;padding: 15px;background: #065495;color: #fff;border-radius: 5px;text-decoration: none;">بازیابی کلمه عبور</a>
              </div>
              </div>
              <span style="opacity: 0">${Date.now()}</span>
              </div>
              `

      // send mail with defined transport object
      let info = await transporter.sendMail({
        from: '"Ostandari Portal" <recovery@rubynaturalco.com>', // sender address
        to: user.email, // list of receivers
        subject: 'لینک بازیابی کلمه عبور',
        text: 'کلمه عبور خود را بازیابی کنید',
        html: emailHTMLTemplate
      });

      //////////////////////////////////////////////////////////////////////////////////////////////////////////////////


      user.token = token;


      await user.save();

      /** show result */
      return res.json(token);

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

/////////////////////////////////////////////////////////////////////// forget password get token and change pass
module.exports.forgetPassGetToken = [
  [
    body('password')
       .isLength({min: 4}).withMessage(_sr['fa'].min_char.min4)
       .custom((value, {req}) => {
         if (value === req.body.password_confirmation) return Promise.resolve()
         else return Promise.reject(_sr['fa'].response.passwords_not_match)
       }),
  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()});

    try {
      var token = req.params.token;

      var password = req.body.password;

      var user = await User.findOne({token: token});

      if (!user) {
        return res500(res, _sr['fa'].response.expired_reset_link); /** @todo change response */
      }

      /**
       * generate salt
       */
      var salt = bcrypt.genSaltSync(10);

      /**
       * hash password with salt
       */
      var hashPassword = bcrypt.hashSync(password, salt);

      if (!hashPassword) {
        return res500(res, `مشکلی در تغییر رمز عبور پیش آمده است`); /** @todo change response */
      }

      user.password = hashPassword;
      user.token = null;

      await user.save();

      /** show result */
      return res.json({message: _sr['fa'].response.success_save});

    } catch (error) {
      res500(res, error?.message);
    }
  }
]

////////////////////////////////////////////////////////////////////// search
module.exports.search = [
  async (req, res) => {
    try {
      var query = {private: false};
      query['$and'] = [];

      var {
        name,
        email,
        phone,
        permissions,
        specialPermissions,
        portals,
        status,
        username
      } = req.body;

      /** search by name and family */
      if (name && !_.isEmpty(name)) {
        query['$and'].push({
          $or: [{
            firstName: {
              $regex: '.*' + name + '.*'
            },
            lastName: {
              $regex: '.*' + name + '.*'
            }
          }]
        });
      }
      /** search by email */
      if (email && !_.isEmpty(email)) {
        query['$and'].push({
          email: email
        });
      }
      /** search by phone */
      if (phone && !_.isEmpty(phone)) {
        query['$and'].push({
          mobileNumber: phone
        });
      }
      /** search by permissions */
      if (permissions && !_.isEmpty(permissions)) {
        query['$and'].push({
          permissions: {
            $in: permissions
          }
        });
      }
      /** search by specialPermissions */
      if (specialPermissions && !_.isEmpty(specialPermissions)) {
        query['$and'].push({
          specialPermissions: {
            $in: specialPermissions
          }
        });
      }
      /** search by portals */
      if (portals && !_.isEmpty(portals)) {
        query['$and'].push({
          portals: {
            $in: portals
          }
        })
      }
      /** search by status */
      if (!_.isUndefined(status) && _.isBoolean(status)) {
        query['$and'].push({
          registration_done: status
        })
      }
      /** search by username */
      if (username && !_.isEmpty(username)) {
        query['$and'].push({
          username: username
        });
      }

      _.isEmpty(query['$and']) && delete query['$and'];
      // _.isEmpty(input['$or']) && delete input['$or'];

      /** get users */
      var users = await User.paginate(query, {page: req.query.page, limit, select});

      /** show result */
      return res.json(users);
    } catch (error) {
      return res500(res, error?.message);
    }
  }
]