/*
 * Copyright @ 2018 - present 8x8, Inc.
 *
 * 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.
 */

package org.jitsi.videobridge.xmpp.config

import com.typesafe.config.ConfigObject
import com.typesafe.config.ConfigValue
import org.jitsi.config.legacyConfigAttributes
import org.jitsi.config.newConfigAttributes
import org.jitsi.utils.config.FallbackProperty
import org.jitsi.xmpp.mucclient.MucClientConfiguration

class XmppClientConnectionConfig {
    class Config {
        companion object {
            class ClientConnectionConfigsProperty : FallbackProperty<List<MucClientConfiguration>>(
                legacyConfigAttributes {
                    name("org.jitsi.videobridge.xmpp.user")
                    readOnce()
                    retrievedAs<ConfigObject>() convertedBy { cfg ->
                        cfg.entries.map { it.toMucClientConfiguration() }
                    }
                },
                newConfigAttributes {
                    name("videobridge.apis.xmpp-client.configs")
                    readOnce()
                    retrievedAs<ConfigObject>() convertedBy { cfg ->
                        cfg.entries.map { it.toMucClientConfiguration() }
                    }
                }
            )
            private val clientConnectionConfigs = ClientConnectionConfigsProperty()

            private fun MutableMap.MutableEntry<String, ConfigValue>.toMucClientConfiguration(): MucClientConfiguration {
                val config = MucClientConfiguration(this.key)
                (value as? ConfigObject)?.let {
                    it.forEach { (propName, propValue) ->
                        config.setProperty(propName, propValue.unwrapped().toString())
                    }
                } ?: run { throw Exception("Invalid muc client configuration. " +
                        "Expected type ConfigObject but got ${value.unwrapped()::class.java}") }
                return config
            }

            @JvmStatic
            fun getClientConfigs(): List<MucClientConfiguration> =
                clientConnectionConfigs.value
        }
    }
}