package auth

import (
	"context"
	"database/sql"
	"time"
)

type Row struct {
	ID           int64
	PasswordHash []byte
	CreatedAt    time.Time
}

func QGet(ctx context.Context, db *sql.DB) (*Row, error) {
	var row Row
	err := db.QueryRowContext(ctx, `
		SELECT id, password_hash, created_at
		FROM auth
		ORDER BY id ASC
		LIMIT 1
	`).Scan(&row.ID, &row.PasswordHash, &row.CreatedAt)
	if err == sql.ErrNoRows {
		return nil, nil
	}
	if err != nil {
		return nil, err
	}
	return &row, nil
}

func QCreate(ctx context.Context, db *sql.DB, hash []byte) (Row, error) {
	var row Row
	err := db.QueryRowContext(ctx, `
		INSERT INTO auth (password_hash)
		VALUES ($1)
		RETURNING id, password_hash, created_at
	`, hash).Scan(&row.ID, &row.PasswordHash, &row.CreatedAt)
	return row, err
}

func QUpdate(ctx context.Context, db *sql.DB, id int64, hash []byte) error {
	_, err := db.ExecContext(ctx, `UPDATE auth SET password_hash = $2 WHERE id = $1`, id, hash)
	return err
}