import { Request, Response } from "express";
import { User } from "../models/User";
import { generateToken } from "../utils/generateToken";


export const register = async (req: Request, res: Response): Promise<void> => {
    try {
        const {name, email, password} = req.body
        if (!name || !email || !password) {
            res.status(400).json({message: 'All fields are required'});
            return;
        }

        const existingUser = await User.findOne({email});
        if (existingUser) {
            res.status(409).json({message:'Email already registered'});
            return;
        }

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

        const token = generateToken(user._id, user.email);
        res.status(201).json({
            token,
            user,
        })
    } catch (error) {
        console.error('Register error:', error)
        res.status(500).json({ message: 'Server error during registration' })
    }
};

export const login = async (req: Request, res: Response ): Promise<void> => {
    try {
        const {email, password} = req.body;
        if (!email || !password) {
            res.status(400).json({
                message: 'Email and password are required'
            });
            return;
        }

        const user = await User.findOne({ email });
        const isMatch = await user?.comparePassword(password)
        if (!user || !isMatch) {
            res.status(401).json({message:'Invalid Email or password'})
            return;
        }

        const token = generateToken(user._id, user.email)

        res.json({token, user})
    } catch(error) {
        console.error('Login error:', error)
        res.status(500).json({ message: 'Server error during login' });

    }
}


export const getMe = async (req: Request, res: Response): Promise<void> => {
    try {
        const user = req.user;
        if (!user) {
            res.status(401).json({message:'Undefined User'})
            return;
        }
        res.json({ user })
    } catch (error) {
        console.error(error)
        res.status(500).json({ message: 'Server Error'})
    }
}