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package org.openbase.jul.communication.iface

import org.openbase.jul.annotation.RPCMethod
import org.openbase.jul.exception.CouldNotPerformException
import kotlin.jvm.internal.Reflection
import kotlin.reflect.KClass
import kotlin.reflect.KFunction
import kotlin.reflect.full.memberFunctions

/*
 * #%L
 * JUL Communication Default
 * %%
 * Copyright (C) 2015 - 2021 openbase.org
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */ /**
 *
 * @author [Divine Threepwood](mailto:[email protected])
 */
interface RPCServer : RPCCommunicator {

    fun registerMethod(method: KFunction<*>, instance: Any, priority: RPCMethod.Priority = RPCMethod.Priority.NORMAL)

    @Throws(CouldNotPerformException::class)
    fun  registerMethods(
        interfaceClass: Class,
        instance: T,
    ) = registerMethods(Reflection.getOrCreateKotlinClass(interfaceClass), instance)

    @Throws(CouldNotPerformException::class)
    fun  registerMethods(
        interfaceClass: KClass,
        instance: T,
    ) = interfaceClass.memberFunctions
        .map { method -> method to method.annotations.firstOrNull { it.annotationClass == RPCMethod::class } }
        .filter { (_, annotation) -> annotation != null }
        .map { (method, annotation) -> method to annotation as RPCMethod }
        .forEach { (method, annotation) -> registerMethod(method, instance, annotation.priority) }
}