const jwt = require('jsonwebtoken');
const bcrypt = require('bcrypt');
const crypto = require('crypto');
const Member = require("../../models").Member;
const resetPasswordService = require("./resetPassword");

module.exports = {
  RESET_START: 100,
  RESET_CONFIRM: 200,
  RESET_COMPLETE: 300,
  async create(req) {
    const { username, password, firstname, lastname, phone, email } = req.body;
    const salt = bcrypt.genSaltSync(10);
    const hashpassword = bcrypt.hashSync(password, salt);
    const user = {
      username: username,
      password: hashpassword,
      firstname: firstname,
      lastname: lastname,
      phone: phone,
      email: email
    }

    return await Member.create(user);
  },

  async login(req) {
    try {
      const user = await Member.findOne({
        where: {
          username: req.body.username,
          status: 1
        }
      });
      if (user) {
        const cmp = await bcrypt.compare(req.body.password, user.password);

        if (cmp) {
          user.last_login = Date.now()
          user.save()
          const token = jwt.sign({
            username: user.username
          },
            process.env.TOKEN_SECRET, { expiresIn: process.env.TOKEN_EXPIRES }
          );

          return {
            accessToken: token
          };
        } else {
          return "Wrong username or password.";
        }
      } else {
        return "Wrong username or password.";
      }
    } catch (error) {
      console.debug(error)
      return "Internal Server error Occured";
    }
  },

  async forgotPassword(req) {
    try {
      const user = await Member.findOne({
        where: { username: req.body.username }
      });
      if (user) {
        const cmp = await bcrypt.compare(req.body.password, user.password);

        if (cmp) {
          user.last_login = Date.now()
          user.save()
          const token = jwt.sign({
            username: user.username
          },
            process.env.TOKEN_SECRET, { expiresIn: process.env.TOKEN_EXPIRES }
          );

          return {
            accessToken: token
          };
        } else {
          return "Wrong username or password.";
        }
      } else {
        return "Wrong username or password.";
      }
    } catch (error) {
      console.debug(error)
      return "Internal Server error Occured";
    }
  },

  async resetPassword(req) {
    try {
      const user = await Member.findOne({
        where: {
          email: req.body.email,
          status: 1
        }
      });
      var date = new Date();
      let reset_key = crypto.createHash('md5').update(date.toString()).digest("hex");
      let reset_pin = Math.floor(100000 + Math.random() * 900000)

      let expired = date.setDate(date.getDate() + 7);
      var status = 3;
      if (user) {
        resetPasswordService.updateStatusExpired(user.id, 7);
        status = 0
      }

      const resetPasswordData = {
        username: user.username,
        member_id: user.id,
        reset_pin: reset_pin,
        reset_key: reset_key,
        expired: expired,
        status: status
      }

      return await resetPasswordService.create(resetPasswordData);
    } catch (error) {
      console.debug(error)
      return "Invalid email";
    }
  },

  async confirmResetPassword(req) {
    try {
      const user = await Member.findOne({
        where: {
          email: req.body.email,
          status: 1
        }
      });
      if (user) {
        const exist = await resetPasswordService.getByCondition({
          member_id: user.id,
          status: 0,
          reset_pin: req.body.resetPin.toString()
        });
        if (exist) {
          resetPasswordService.updateStatusById(exist.id, 1);
          return {
            resetKey: exist.reset_key
          }
        }
        return "invalid PIN";
      } else {
        return "email is not existed";
      }
    } catch (error) {
      console.debug(error)
      return "Invalid email";
    }
  },

  async completeResetPassword(req) {
    try {
      const user = await Member.findOne({
        where: {
          email: req.body.email,
          status: 1
        }
      });
      if (user) {
        const exist = await resetPasswordService.getByCondition({
          member_id: user.id,
          status: 1,
          reset_key: req.body.resetKey.toString()
        });
        if (exist) {
          const salt = bcrypt.genSaltSync(10);
          const hashpassword = bcrypt.hashSync(req.body.newPassword, salt);
          Member
            .update(
              {
                password: hashpassword
              },
              {
                returning: true,
                where: {
                  id: user.id
                }
              }
            )
            .then(([rowsUpdate, [updatedRow]]) => {
              console.log(rowsUpdate)
            })
            .catch(error => {
              console.log(error)
            });

          resetPasswordService.updateStatusById(exist.id, 5);
          return "Ok"
        }
        return "invalid PIN";
      } else {
        return "email is not existed";
      }
    } catch (error) {
      console.debug(error)
      return "Invalid email";
    }
  },

  async getProfile(req) {
    const username = req.user.username;
    return await Member.findOne({
      where: { username: username },
      attributes: ['username', 'email', 'phone', 'firstname', 'lastname']
    });
  },

  updateProfile(username, data) {
    return Member
      .update(data,
        {
          returning: true,
          where: {
            username: username
          }
        }
      )
      .then(([rowsUpdate, [updatedRow]]) => {
        return updatedRow
      })
      .catch(error => {
        console.log(error)
      });
  },

  async updatePassword(req) {
    const username = req.user.username;
    const user = await Member.findOne({
      where: { username:  username},
      attributes: ['password', 'username']
    });
    const cmp = await bcrypt.compare(req.body.oldPassword, user.password);

    console.log(cmp);
    if (cmp) {
      const salt = bcrypt.genSaltSync(10);
      const hashpassword = bcrypt.hashSync(req.body.newPassword, salt);
      return Member
        .update(
          {
            password: hashpassword
          },
          {
            returning: true,
            where: {
              username: username
            }
          }
        );
    }
    return "Wrong password"
  },

  async deactivateAccount(req) {
    return Member
      .destroy({
        where: {
          id: req.params.id
        }
      })
      .then(rowDeleted => {
        if (rowDeleted !== 1) {
          throw ({
            "name": "ValidationError",
            "errors": [{
              message: 'Item not found'
            }]
          });
        }
        return res.status(200).json({ message: "Deleted successfully" });
      })
      .catch(error => res.status(400).send(error));
  }
}