package settings

import "database/sql"

type SettingsService struct {
	db *sql.DB
}

func NewSettingsService(db *sql.DB) *SettingsService {
	return &SettingsService{db: db}
}

func (s *SettingsService) Get(key string) (string, error) {
	var value string
	err := s.db.QueryRow("SELECT value FROM settings WHERE key = ?", key).Scan(&value)
	if err == sql.ErrNoRows {
		return "", nil
	}
	return value, err
}

func (s *SettingsService) GetDefault(key, defaultValue string) string {
	val, err := s.Get(key)
	if err != nil || val == "" {
		return defaultValue
	}
	return val
}

func (s *SettingsService) Set(key, value string) error {
	_, err := s.db.Exec(
		"INSERT INTO settings (key, value) VALUES (?, ?) ON CONFLICT(key) DO UPDATE SET value = ?",
		key, value, value,
	)
	return err
}

func (s *SettingsService) Delete(key string) error {
	_, err := s.db.Exec("DELETE FROM settings WHERE key = ?", key)
	return err
}