package db

import (
	"context"
	"fmt"
	"time"

	"github.com/jackc/pgx/v5/pgxpool"
)

var connPool *pgxpool.Pool

func InitDB(connString string) error {
	poolConfig, err := pgxpool.ParseConfig(connString)
	if err != nil {
		return fmt.Errorf("error while parsing connection string: %w", err)
	}

	poolConfig.MaxConns = 10
	poolConfig.MinConns = 0
	poolConfig.MaxConnLifetime = time.Hour
	poolConfig.HealthCheckPeriod = 30 * time.Second

	connPool, err = pgxpool.NewWithConfig(context.Background(), poolConfig)
	if err != nil {
		return fmt.Errorf("error while initializing DB connection pool: %w", err)
	}
	return nil
}

//#region Users

func UserLogin(ctx context.Context, login, password string) (user_id string, err error) {
	row := connPool.QueryRow(ctx, "SELECT id FROM users WHERE login=$1 AND password=crypt($2, password)", login, password)
	err = row.Scan(&user_id)
	return
}

func UserAuth(ctx context.Context, user_id string) (ok, editor bool) {
	row := connPool.QueryRow(ctx, "SELECT editor FROM users WHERE id=$1", user_id)
	err := row.Scan(&editor)
	ok = (err == nil)
	return
}

//#endregion Users