package postgresql

import (
	"context"
	"fmt"

	"gitea.computernetthings.ru/yash/crypto_alert_bot/internal/entities"
)

const saveUserQuery = "insert into users(telegram_id) values ($1) returning id"

func (p *Postgresql) SaveUser(ctx context.Context, user *entities.User) (entities.UserID, error) {
	var id entities.UserID

	err := p.db.QueryRow(ctx, saveUserQuery, user.TelegramID).Scan(&id)
	if err != nil {
		return "", fmt.Errorf("failed to exec saveUserQuery: %w", err)
	}

	return id, nil
}

const getUserByIDQuery = "select id, telegram_id from users where id = $1"

func (p *Postgresql) UserByID(ctx context.Context, id entities.UserID) (*entities.User, error) {
	var user entities.User

	err := p.db.QueryRow(ctx, getUserByIDQuery, id).Scan(&user.ID, &user.TelegramID)
	if err != nil {
		return nil, fmt.Errorf("failed to exec getUserByIDQuery: %w", err)
	}

	return &user, nil
}

const getUserByTelegramIDQuery = "select id, telegram_id from users where telegram_id = $1"

func (p *Postgresql) UserByTelegramID(ctx context.Context, tgID entities.TelegramID) (*entities.User, error) {
	var user entities.User

	err := p.db.QueryRow(ctx, getUserByTelegramIDQuery, tgID).Scan(&user.ID, &user.TelegramID)
	if err != nil {
		return nil, fmt.Errorf("failed to exec getUserByTelegramIDQuery: %w", err)
	}

	return &user, nil
}