import { Request, Response, NextFunction } from 'express';

import {

  createUser,

  findUserById,

  findUserByEmail,

  updateUser,

  generateToken

} from '@app/models/user';

import {

  validateRequiredFields

} from '@app/utils/validators'

export const UsersController = {

  create: async (req: Request, res: Response, next: NextFunction) => {

    try {

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

      // Validate required fields

      const requiredValidation = validateRequiredFields(req.body, [

        'email', 'password', 'firstName'

      ]);

      if (!requiredValidation.valid) {

        return res.status(400).json({

          error: "Campos faltantes",

          missing: requiredValidation.missing

        });

      }

      const user = await createUser(

        email, firstName, lastName, password

      );

      const jwtToken = generateToken(user.id, user.email);

      res.status(201).json({ token: jwtToken });

    } catch (err) {

      next(err);

    }

  },

  update: async (req: Request, res: Response, next: NextFunction) => {

    try {

      const { id } = req.params

      const { user: userParams } = req.body;

      if (userParams) {

        const { email, password, firstName, lastName } = userParams;

        const user = await findUserById(Number(id));

        if (!user) {

          return res.status(404).json({

            error: "Usuário não encontrado"

          })

        }

        if (email || password || firstName || lastName) {

          const response = await updateUser(user, {

            email, firstName, lastName, password

          })

          const updated = await findUserById(Number(id))

          // TODO: Drop encrypted password & token here

          return res.status(200).json({

            user: updated

          })

        } else {

          return res.status(200).json({

            user

          })

        }

      }

    } catch (err) {

      next(err);

    }

  }

};