package postgres

import (
	"context"
	"errors"
	"serverctl/pkg/db"
	"serverctl/pkg/users"
)

var _ users.Repository = &usersRepository{}

type usersRepository struct {
	databasePool *db.Client
}

func NewUsersRepository(db *db.Client) users.Repository {
	return &usersRepository{db}
}

func (u *usersRepository) Create(ctx context.Context, user *users.CreateUser) (int, error) {
	var userId int
	conn := u.databasePool.GetConn(ctx)
	defer conn.Release()

	conn.QueryRow(ctx, "INSERT INTO users(email, password_hash) values ($1, $2) RETURNING id", user.Email, user.PasswordHash).Scan(&userId)

	if userId == 0 {
		return -1, errors.New("could not insert data into users table")
	}

	return userId, nil
}

func (u *usersRepository) GetByEmail(ctx context.Context, email string, passwordHash string) (*users.User, error) {
	conn := u.databasePool.GetConn(ctx)
	defer conn.Release()

	var id int
	err := conn.QueryRow(ctx, "select id from users where email = $1 and password_hash = $2", email, passwordHash).Scan(&id)
	if err != nil {
		return nil, err
	}

	if id <= 0 {
		return nil, errors.New("user with that password doesn't exist")
	}

	return users.NewUser(id, email), nil
}