package store

import (
	"database/sql"
	"errors"
	"fmt"
)

// GetSetting returns a settings value or empty string when missing.
func (s *Store) GetSetting(key string) (string, error) {
	var value string
	err := s.db.QueryRow("SELECT value FROM settings WHERE key = ?", key).Scan(&value)
	if errors.Is(err, sql.ErrNoRows) {
		return "", nil
	}
	if err != nil {
		return "", fmt.Errorf("get setting %s: %w", key, err)
	}
	return value, nil
}

// SetSetting upserts a settings key.
func (s *Store) SetSetting(key, value string) error {
	_, err := s.db.Exec(
		"INSERT INTO settings (key, value) VALUES (?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value",
		key, value,
	)
	if err != nil {
		return fmt.Errorf("set setting %s: %w", key, err)
	}
	return nil
}