/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018 NOKIA
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config

import arrow.core.Option
import org.apache.commons.cli.CommandLine
import org.apache.commons.cli.DefaultParser
import org.onap.dcae.collectors.veshv.commandline.ArgBasedConfiguration
import org.onap.dcae.collectors.veshv.commandline.CommandLineOption
import org.onap.dcae.collectors.veshv.commandline.CommandLineOption.KAFKA_SERVERS
import org.onap.dcae.collectors.veshv.commandline.CommandLineOption.KAFKA_TOPICS
import org.onap.dcae.collectors.veshv.commandline.CommandLineOption.LISTEN_PORT
import org.onap.dcae.collectors.veshv.commandline.CommandLineOption.MAXIMUM_PAYLOAD_SIZE_BYTES
import org.onap.dcae.collectors.veshv.commandline.intValue
import org.onap.dcae.collectors.veshv.commandline.stringValue
import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
import org.onap.dcae.collectors.veshv.utils.arrow.OptionUtils.binding
import java.net.InetSocketAddress

class ArgDcaeAppSimConfiguration : ArgBasedConfiguration<DcaeAppSimConfiguration>(DefaultParser()) {
    override val cmdLineOptionsList: List<CommandLineOption> = listOf(
            LISTEN_PORT,
            MAXIMUM_PAYLOAD_SIZE_BYTES,
            KAFKA_SERVERS,
            KAFKA_TOPICS
    )

    override fun getConfiguration(cmdLine: CommandLine): Option<DcaeAppSimConfiguration> =
            binding {
                val listenPort = cmdLine.intValue(LISTEN_PORT).bind()
                val kafkaBootstrapServers = cmdLine.stringValue(KAFKA_SERVERS).bind()

                val maxPayloadSizeBytes = cmdLine
                        .intValue(MAXIMUM_PAYLOAD_SIZE_BYTES, WireFrameMessage.DEFAULT_MAX_PAYLOAD_SIZE_BYTES)

                val kafkaTopics = cmdLine
                        .stringValue(KAFKA_TOPICS)
                        .map { it.split(",").toSet() }
                        .bind()

                DcaeAppSimConfiguration(
                        InetSocketAddress(listenPort),
                        maxPayloadSizeBytes,
                        kafkaBootstrapServers,
                        kafkaTopics)
            }
}