const db = require("../models");
const bcrypt = require("bcryptjs");
const jwt = require("jsonwebtoken");
const logger = require("../services/logger");
require("dotenv").config();

const User = db.user;
const EstablishmentUser = db.EstablishmentUser;

// Create User
exports.createUser = async (req, res) => {
  try {

    const { name, email, password } = req.body;
    const existingUser = await User.findOne({ where: { email, is_active: true } });
    const establishmentExist = await EstablishmentUser.findOne({ where: { email, is_active: true }});
    if (existingUser) {
      logger.warn(`Email already exists: ${email}`);
      return res.status(409).send({
        status: "failed",
        message: "Email already exists"
      });
    }
    if (establishmentExist) {
      logger.warn(`Email already exists in Company Profile: ${email}`);
      return res.status(409).send({
        status: "failed",
        message: "This email address is already registered in the company profile."
      });
    }
    const hashedPassword = await bcrypt.hash(password, 10);

    const user = await User.create({ name, email, password: hashedPassword });

    logger.info("User created successfully");

    res.status(201).send({'status':"success",'message':"User created successfully" });

  } catch (err) {
    logger.error(err.message);
    logger.error(`Stack trace: ${err.stack}`);
    res.status(500).send({'status':"failed",'message': "Internal server error" });
  }
};

// Get All Users
exports.getAllUsers = async (req, res) => {
  try {

    const users = await User.findAll();

    res.status(200).send({'status':"success",'message':"Fetched successfully",'data': users }); 

  } catch (err) {
    logger.error(err.message);
    logger.error(`Stack trace: ${err.stack}`);
    res.status(500).send({'status':"failed",'message': "Internal server error" });
  }
};

// Get User by ID
exports.getUserById = async (req, res) => {
  try {

    const user = await User.findByPk(req.params.id);

    if (!user) res.status(404).send({'status':"failed",'message':"Record Not found",'data': "" }); 

    res.status(200).send({'status':"success",'message':"Fetched successfully",'data': user }); 

  } catch (err) {
    logger.error(err.message);
    logger.error(`Stack trace: ${err.stack}`);
    res.status(500).send({'status':"failed",'message': "Internal server error" });
  }
};

// Update User
exports.updateUser = async (req, res) => {
  try {

    const { name, email,is_active } = req.body;
    if (email === 'bhavinkumar.chandulal@fcsc.gov.ae') {
        return res.status(403).json({
          status: "error",
          message: "You cannot modify Super Admin data."
        });
      }
    const [updated] = await User.update({ name, email, is_active}, { where: { id: req.params.id } });

    if (updated) {
      const updatedUser = await User.findByPk(req.params.id);
      res.status(200).send({'status':"success",'message':"Updated successfully" });
    } else {
      res.status(404).send({'status':"failed",'message':"Record Not found" }); 
    }

  } catch (err) {
    logger.error(err.message);
    logger.error(`Stack trace: ${err.stack}`);
    res.status(500).send({'status':"failed",'message':"Internal server error" });
  }
};

// Delete User
exports.deleteUser = async (req, res) => {
  try {

    const deleted = await User.destroy({ where: { id: req.params.id } });

    if (deleted) {
      res.status(200).send({'status':"success",'message':"Deleted successfully",'data': "" });
    } else {
      res.status(404).send({'status':"failed",'message':"Record Not found",'data': "" }); 
    }
    
  } catch (err) {
    logger.error(err.message);
    logger.error(`Stack trace: ${err.stack}`);
    res.status(500).send({'status':"failed",'message': 'Internal server error' });
  }
};

// Change User Password
exports.changeAdminUserPassword = async (req, res) => {
  try {
    const { old_password, new_password, confirm_password } = req.body;
    const userId = req.params.id;

    // Validate inputs
    if (!old_password || !new_password || !confirm_password) {
      return res.status(400).send({ status: "failed", message: "All password fields are required" });
    }

    if (new_password !== confirm_password) {
      return res.status(400).send({ status: "failed", message: "New password and confirm password do not match" });
    }

    // Find user
    const user = await User.findByPk(userId);
    if (!user) {
      return res.status(404).send({ status: "failed", message: "User not found" });
    }

    // Verify old password
    const isMatch = await bcrypt.compare(old_password, user.password);
    if (!isMatch) {
      return res.status(400).send({ status: "failed", message: "Old password is incorrect" });
    }

    // Hash and update new password
    const hashedPassword = await bcrypt.hash(new_password, 10);
    await User.update(
      { password: hashedPassword },
      { where: { id: userId } }
    );

    return res.status(200).send({status: "success", message: "Password updated successfully",});
    
  } catch (err) {
    logger.error(err.message);
    logger.error(`Stack trace: ${err.stack}`);
    return res.status(500).send({ status: "failed", message: "Internal server error" });
  }
};