Repository

GithubRepository.kt

class GithubRepository private constructor(
    private val favoriteDao: FavoriteDao
) {
    suspend fun insertFavoriteUser(data: FavoriteUser) {
        favoriteDao.insertFavorite(data)
    }

    suspend fun deleteFavoriteUser(username: String) {
        favoriteDao.deleteFavorite(username)
    }

    fun isExistsFavorite(username: String) {
        return favoriteDao.isExistsFavorite(username)
    }
    
    fun getAllFavorite() {
        return favoriteDao.getAllFavoriteUsers()
    }

    companion object {
        @Volatile
        private var instance: GithubRepository? = null
        fun getInstance(
            favoriteDao: FavoriteDao
        ): GithubRepository =
            instance ?: synchronized(this) {
                instance ?: GithubRepository(favoriteDao)
            }.also { instance = it }
    }
}