/*
 * Copyright 2023 dorkbox, llc
 *
 * 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 dorkboxTest.network.rmi

import dorkbox.netUtil.IPv4
import dorkbox.netUtil.IPv6
import dorkbox.network.Client
import dorkbox.network.Configuration
import dorkbox.network.Server
import dorkbox.network.connection.Connection
import dorkboxTest.network.BaseTest
import dorkboxTest.network.rmi.cows.MessageWithTestCow
import dorkboxTest.network.rmi.cows.TestCow
import dorkboxTest.network.rmi.cows.TestCowImpl
import org.junit.Assert
import org.junit.Test

class RmiSimpleActionsTest : BaseTest() {
    @Test
    fun testGlobalDelete() {
        val configuration = serverConfig()
        configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)
        configuration.serialization.register(MessageWithTestCow::class.java)
        configuration.serialization.register(UnsupportedOperationException::class.java)

        // for Client -> Server RMI
        configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)

        val server = Server<Connection>(configuration)
        addEndPoint(server)

        val OBJ_ID = 3423
        val testCowImpl = TestCowImpl(OBJ_ID)

        server.rmiGlobal.save(testCowImpl, OBJ_ID)
        Assert.assertTrue(server.rmiGlobal.delete(testCowImpl))
        Assert.assertFalse(server.rmiGlobal.delete(testCowImpl))
        Assert.assertFalse(server.rmiGlobal.delete(OBJ_ID))


        val newId = server.rmiGlobal.save(testCowImpl)
        Assert.assertTrue(server.rmiGlobal.delete(newId))
        Assert.assertFalse(server.rmiGlobal.delete(newId))
        Assert.assertFalse(server.rmiGlobal.delete(testCowImpl))



        val newId2 = server.rmiGlobal.save(testCowImpl)
        Assert.assertTrue(server.rmiGlobal.delete(testCowImpl))
        Assert.assertFalse(server.rmiGlobal.delete(testCowImpl))
        Assert.assertFalse(server.rmiGlobal.delete(newId2))

        stopEndPoints()
        waitForThreads()
    }

    @Test
    fun rmiIPv4NetworkGlobalDelete() {
        rmiConnectionDelete(isIpv4 = true, isIpv6 = false)
    }

    private fun doConnect(isIpv4: Boolean, isIpv6: Boolean, runIpv4Connect: Boolean, client: Client<Connection>) {
        when {
            isIpv4 && isIpv6 && runIpv4Connect -> client.connect(IPv4.LOCALHOST, 2000)
            isIpv4 && isIpv6 && !runIpv4Connect -> client.connect(IPv6.LOCALHOST, 2000)
            isIpv4 -> client.connect(IPv4.LOCALHOST, 2000)
            isIpv6 -> client.connect(IPv6.LOCALHOST, 2000)
            else -> client.connectIpc()
        }
    }

    fun rmiConnectionDelete(isIpv4: Boolean = false, isIpv6: Boolean = false, runIpv4Connect: Boolean = true, config: Configuration.() -> Unit = {}) {
        var RMI_ID = 0

        val server = run {
            val configuration = serverConfig()
            configuration.enableIPv4 = isIpv4
            configuration.enableIPv6 = isIpv6
            config(configuration)

            configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)
            configuration.serialization.register(MessageWithTestCow::class.java)
            configuration.serialization.register(UnsupportedOperationException::class.java)

            // for Client -> Server RMI
            configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)

            val server = Server<Connection>(configuration)
            addEndPoint(server)

            server.onMessage<MessageWithTestCow> { m ->
                server.logger.error("Received finish signal for test for: Client -> Server")

                val `object` = m.testCow
                val id = `object`.id()

                Assert.assertEquals(23, id)

                server.logger.error("Finished test for: Client -> Server")

                rmi.delete(RMI_ID)

                val newID = RMI_ID+123
                val testCow = TestCowImpl(newID)
                // we must manually save the object -- because if we don't we'll auto-create it when it gets sent across the network.
                // this happens BECAUSE `TestCow` is an RMI object!!
                rmi.save(testCow, newID)
                send(MessageWithTestCow(testCow))
            }

            server
        }

        val client = run {
            val configuration = clientConfig()
            config(configuration)
            //            configuration.serialization.registerRmi(TestCow::class.java, TestCowImpl::class.java)

            val client = Client<Connection>(configuration)
            addEndPoint(client)



            client.onConnect {
                rmi.create<TestCow>(23) {
                    RMI_ID = it
                    client.logger.error("Running test for: Client -> Server")
//                    RmiCommonTest.runTests(this@onConnect, this@create, 23)
                    val m = MessageWithTestCow(this)
                    m.number = 678
                    m.text = "sometext"
                    this@onConnect.send(m)

                    client.logger.error("Done with test for: Client -> Server")
                }
            }

            client.onMessage<MessageWithTestCow> { _ ->
                // check if 23 still exists (it should not)
                val obj = rmi.get<TestCow>(RMI_ID)

                try {
                    obj.id()
                    Assert.fail(".id() should throw an exception, the backing RMI object doesn't exist!")
                } catch (e: Exception) {
                    // this is expected
                }

                stopEndPoints()
            }

            client
        }

        server.bind(2000)
        doConnect(isIpv4, isIpv6, runIpv4Connect, client)

        waitForThreads()
    }

    @Test
    fun rmiReconnectPersistence() {
        var RMI_ID = 0

        val server = run {
            val configuration = serverConfig()

            configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)
            configuration.serialization.register(MessageWithTestCow::class.java)
            configuration.serialization.register(UnsupportedOperationException::class.java)

            // for Client -> Server RMI
            configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)

            val server = Server<Connection>(configuration)
            addEndPoint(server)

            server.onMessage<MessageWithTestCow> { m ->
                server.logger.error("Received finish signal for test for: Client -> Server")

                val `object` = m.testCow
                val id = `object`.id()

                Assert.assertEquals(23, id)

                server.logger.error("Finished test for: Client -> Server")

                rmi.delete(RMI_ID)

                val newID = RMI_ID+123
                val testCow = TestCowImpl(newID)
                // we must manually save the object -- because if we don't we'll auto-create it when it gets sent across the network.
                // this happens BECAUSE `TestCow` is an RMI object!!
                rmi.save(testCow, newID)
                send(MessageWithTestCow(testCow))
            }

            server
        }

        val client = run {
            var firstRun = true
            val configuration = clientConfig()
            //            configuration.serialization.registerRmi(TestCow::class.java, TestCowImpl::class.java)

            val client = Client<Connection>(configuration)
            addEndPoint(client)


            client.onConnect {
                rmi.create<TestCow>(23) {
                    RMI_ID = it
                    client.logger.error("Running test for: Client -> Server")
//                    RmiCommonTest.runTests(this@onConnect, this@create, 23)

                    val m = MessageWithTestCow(this)
                    m.number = 678
                    m.text = "sometext"
                    this@onConnect.send(m)

                    client.logger.error("Done with test for: Client -> Server")
                }
            }

            client.onMessage<MessageWithTestCow> { _ ->
                // check if 23 still exists (it should not)
                val obj = rmi.get<TestCow>(RMI_ID)

                try {
                    obj.id()
                    Assert.fail(".id() should throw a timeout/exception, the backing RMI object doesn't exist!")
                } catch (e: Exception) {
                    // this is expected
                }

                if (firstRun) {
                    firstRun = false
                    client.close(false)
                    client.connectIpc()
                } else {
                    stopEndPoints()
                }
            }

            client
        }

        server.bindIpc()
        client.connectIpc()

        waitForThreads()
    }
}