const bcrypt = require("bcryptjs");
const User = require("../models/User");
const Student = require("../models/Student");
const jwt = require("jsonwebtoken");
const JWT_secret = "Cantileverlabs";
const messagebird = require("messagebird")("llVKD53ve6QRpbCKOHzWBADaS");
const nodemailer = require("nodemailer");

module.exports.Protected = async (req, res, next) => {
  res.send("Hello User");
};
module.exports.postSignup = async (req, res, next) => {
  try {
    //we need firstName , lastName , email , password as input
    let firstName = req.body.firstName || " ";
    let lastName = req.body.lastName || " ";
    let email = req.body.email;
    let password = req.body.password;
    let user = await User.findOne({ email: email });
    if (user) {
      res.json({
        message: "User already exist",
        type: "error",
      });
    } else {
      const hashedPass = await bcrypt.hash(password, 12);
      user = new User({
        firstName: firstName,
        lastName: lastName,
        email: email,
        password: hashedPass,
        isAdmin: false,
      });
      user = await user.save();
      await Student.deleteOne({ user: user._id });
      let student = new Student({
        user: user._id,
      });
      student = await student.save();
      user.student = student._id;
      await user.save();
      res.json({
        message: "Successfully signed Up",
        type: "success",
      });
    }
  } catch (err) {
    console.log(err);
  }
};

module.exports.postSignin = async (req, res, next) => {
  try {
    //we need email and password as input
    let email = req.body.email;
    let password = req.body.password;
    let user = await User.findOne({ email: email });
    if (user) {
      const isMatched = await bcrypt.compare(password, user.password);
      if (isMatched) {
        const token = jwt.sign({ _id: user._id }, JWT_secret);
        res.json({
          token: token,
        });
      } else {
        res.json({
          message: "email and password doesn't match",
          type: "error",
        });
      }
    } else {
      res.json({
        message: "No user with this email exists",
        type: "error",
      });
    }
  } catch (err) {
    console.log(err);
  }
};

module.exports.sendOTP = (req, res, next) => {
  //uNNYosMopvvCW9RTR1tRWJmYC test
  //llVKD53ve6QRpbCKOHzWBADaS live
  try {
    const { phoneNumber } = req.body;
    if (!phoneNumber) {
      res.status(422).json({ message: "Please Add All Required Fields" });
      return;
    } else {
      messagebird.verify.create(
        phoneNumber,
        {
          template: "Your verification code is %token",
        },
        function (err, response) {
          if (err) {
            console.log(err);
            res.status(422).json({ message: err.errors[0].description });
          } else {
            console.log(response);
            res.json({ id: response.id });
          }
        }
      );
    }
  } catch (err) {
    console.log(err);
  }
};

module.exports.getOTP = (req, res, next) => {
  try {
    const { id, token } = req.body;
    messagebird.verify.verify(id, token, function (err, response) {
      if (err) {
        console.log({ error: err.errors[0].description, id: id });
        res.json({ error: err.errors[0].description, id: id });
      } else {
        console.log(response);
        res.json({ message: "Code Verified" });
      }
    });
  } catch (err) {
    console.log(err);
  }
};
var transport = nodemailer.createTransport({
  host: "smtp.mailtrap.io",
  port: 2525,
  auth: {
    user: "5578544cc56856",
    pass: "a510d3d969d3b3",
  },
});
module.exports.forgotpassword = async (req, res, next) => {
  const { email, link, _html, sending_company_email, subject } = req.body; //link = https://cantileverlabs.herokuapp.com/resetpassword/:id/:token
  try {
    await User.findOne({ email }).then((user) => {
      if (!user) {
        res.status(404).json({ error: "User not found with this Email" });
        return;
      } else {
        const payload = {
          email: user.email,
          _id: user._id,
        };
        const secret = JWT_secret + user.password;
        const token = jwt.sign(payload, secret, { expiresIn: "10m" });
        User.findByIdAndUpdate(user._id, {
          $set: { passwordResetToken: token },
        })
          .then((data) => {
            const reset_link = `${link}/${user._id}/${token}`;
            const message = {
              from: `${sending_company_email}`, // Sender address
              to: `${user.email}`, // List of recipients
              subject: `${subject}`, // Subject line
              html: `${_html}`, // design html for email message.
            };
            transport.sendMail(message, function (err, info) {
              if (err) {
                console.log(err);
              } else {
                console.log(info);
              }
            });
            res.status(200).json({
              message: "Token Saved and link is active for 10 mins",
              reset_link,
            });
          })
          .catch((err) => {
            console.log(err);
          });
      }
    });
  } catch {
    (error) => {
      console.log("Error from forgot pass", error);
    };
  }
  //verify email then set password.
};
module.exports.resetpassword = async (req, res, next) => {
  const { _id, token } = req.params;
  const { password } = req.body;
  try {
    let user = await User.findById({ _id });
    if (!user) {
      res.json({ error: "User not Found or WrongId" });
      return;
    } else {
      const secret = JWT_secret + user.password;
      const user_token = user.passwordResetToken;
      const payload = jwt.verify(token, secret);
      const hashedPass = await bcrypt.hash(password, 12);
      if (token == user_token) {
        user.password = hashedPass;
        await user
          .save()
          .then((ok) => {
            res.json({ message: "Password Updated!" });
          })
          .catch((err) => {
            console.log("Error in save", err);
          });
      } else {
        res.status(422).json({ error: "Either Token not found or Expired!" });
        return;
      }
    }
  } catch {
    (err) => {
      console.log("error from try catch resetpass", err);
    };
  }
};

module.exports.checkProtected = (req, res, next) => {
  console.log(req.user);
  res.json({
    message: "Protected",
    user: req.user,
  });
};