package services

import (
	"context"
	"database/sql"
	"errors"

	"go-backend/internal/database/sqlc"
)

type UserService struct {
	db      *sql.DB
	queries *sqlc.Queries
}

func NewUserService(db *sql.DB, queries *sqlc.Queries) *UserService {
	return &UserService{
		db:      db,
		queries: queries,
	}
}

func (s *UserService) FindByID(ctx context.Context, id string) (*sqlc.UserAuth, error) {
	user, err := s.queries.SelectUserById(ctx, id)

	if err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			return nil, nil
		}
		return nil, err
	}

	return &user, nil
}

func (s *UserService) FindByUsername(ctx context.Context, username string) (*sqlc.UserAuth, error) {
	user, err := s.queries.SelectUserByUsername(ctx, username)

	if err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			return nil, nil
		}
		return nil, err
	}

	return &user, nil
}

func (s *UserService) CreateUser(ctx context.Context, userInput sqlc.InsertUserParams) (*sqlc.UserAuth, error) {
	user, err := s.queries.InsertUser(ctx, userInput)

	if err != nil {
		return nil, err
	}

	return &user, nil
}