package org.moire.ultrasonic.api.subsonic

import com.fasterxml.jackson.core.JsonParser
import com.fasterxml.jackson.databind.DeserializationContext
import com.fasterxml.jackson.databind.JsonDeserializer
import com.fasterxml.jackson.databind.annotation.JsonDeserialize

/**
 * Common API errors.
 */
@JsonDeserialize(using = SubsonicError.Companion.SubsonicErrorDeserializer::class)
enum class SubsonicError(val code: Int) {
    GENERIC(0),
    REQUIRED_PARAM_MISSING(10),
    INCOMPATIBLE_CLIENT_PROTOCOL_VERSION(20),
    INCOMPATIBLE_SERVER_PROTOCOL_VERSION(30),
    WRONG_USERNAME_OR_PASSWORD(40),
    TOKEN_AUTH_NOT_SUPPORTED_FOR_LDAP(41),
    USER_NOT_AUTHORIZED_FOR_OPERATION(50),
    TRIAL_PERIOD_IS_OVER(60),
    REQUESTED_DATA_WAS_NOT_FOUND(70);

    companion object {
        fun parseErrorFromJson(jsonErrorCode: Int) = SubsonicError.values()
                .filter { it.code == jsonErrorCode }.firstOrNull()
                ?: throw IllegalArgumentException("Unknown code $jsonErrorCode")

        class SubsonicErrorDeserializer : JsonDeserializer<SubsonicError>() {
            override fun deserialize(p: JsonParser, ctxt: DeserializationContext?): SubsonicError {
                p.nextToken() // "code"
                val error = parseErrorFromJson(p.valueAsInt)
                p.nextToken() // "message"
                p.nextToken() // end of error object
                return error
            }
        }
    }
}