package db

import (
	"database/sql"
	"fmt"

	mcdsldb "git.wntrmute.dev/kyle/mcdsl/db"
)

// Store wraps a SQLite database connection for mc-proxy persistence.
type Store struct {
	db *sql.DB
}

// Open opens (or creates) the SQLite database at path with WAL mode,
// foreign keys, and a busy timeout. The file is created with 0600
// permissions.
func Open(path string) (*Store, error) {
	database, err := mcdsldb.Open(path)
	if err != nil {
		return nil, fmt.Errorf("opening database: %w", err)
	}
	return &Store{db: database}, nil
}

// Close closes the database connection.
func (s *Store) Close() error {
	return s.db.Close()
}

// DB returns the underlying *sql.DB for use with mcdsl functions.
func (s *Store) DB() *sql.DB {
	return s.db
}

// IsEmpty returns true if the listeners table has no rows.
// Used to determine if the database needs seeding from config.
func (s *Store) IsEmpty() (bool, error) {
	var count int
	err := s.db.QueryRow("SELECT COUNT(*) FROM listeners").Scan(&count)
	if err != nil {
		return false, err
	}
	return count == 0, nil
}