/*
 * Copyright (C) 2020 Conny Duck
 *
 * This file is part of Pixelcat.
 *
 * Pixelcat is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Pixelcat is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package at.connyduck.pixelcat.network.calladapter

import java.io.IOException

sealed class NetworkResponse<out A : Any> {

    data class Success<T : Any>(val body: T) : NetworkResponse<T>()

    data class Failure(val reason: NetworkResponseError) : NetworkResponse<Nothing>()

    inline fun <B> fold(onSuccess: (A) -> B, onFailure: (NetworkResponseError) -> B): B = when (this) {
        is Success -> onSuccess(body)
        is Failure -> onFailure(reason)
    }
}

sealed class NetworkResponseError : Throwable() {

    data class ApiError(val code: Int) : NetworkResponseError()

    /**
     * Network error
     */
    data class NetworkError(val error: IOException) : NetworkResponseError()

    /**
     * For example, json parsing error
     */
    data class UnknownError(val error: Throwable?) : NetworkResponseError()
}