Project Wide Utilities: Creating error handling wrapper - devrath/RunTracer GitHub Wiki

interface Error

sealed interface Result<out D, out E: Error> {
    data class Success<out D>(val data: D): Result<D, Nothing>
    data class Error<out E: com.istudio.core.domain.util.Error>(val error: E): Result<Nothing, E>
}

inline fun <T, E: Error, R> Result<T, E>.map(map: (T) -> R): Result<R, E> {
    return when(this) {
        is Result.Error -> Result.Error(error)
        is Result.Success -> Result.Success(map(data))
    }
}

fun <T, E: Error> Result<T, E>.asEmptyDataResult(): EmptyDataResult<E> {
    return map {  }
}

typealias EmptyDataResult<E> = Result<Unit, E>

sealed interface DataError: Error {
    enum class Network: DataError {
        REQUEST_TIMEOUT,
        UNAUTHORIZED,
        CONFLICT,
        TOO_MANY_REQUESTS,
        NO_INTERNET,
        PAYLOAD_TOO_LARGE,
        SERVER_ERROR,
        SERIALIZATION,
        UNKNOWN
    }

    enum class Local: DataError {
        DISK_FULL
    }
}