/*
 * ============LICENSE_START=======================================================
 * ONAP - CDS
 * ================================================================================
 * Copyright (C) 2019 Huawei Technologies Co., Ltd. All rights reserved.
 * ================================================================================
 * 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.ccsdk.apps.blueprintprocessor.dmaap

import com.fasterxml.jackson.databind.ObjectMapper
import org.junit.Test
import org.junit.runner.RunWith
import org.onap.ccsdk.cds.blueprintsprocessor.core.BluePrintProperties
import org.onap.ccsdk.cds.blueprintsprocessor.core.BlueprintPropertyConfiguration
import org.onap.ccsdk.cds.blueprintsprocessor.dmaap.BluePrintDmaapLibConfiguration
import org.onap.ccsdk.cds.blueprintsprocessor.dmaap.BluePrintDmaapLibPropertyService
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.autoconfigure.EnableAutoConfiguration
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.http.HttpStatus
import org.springframework.http.ResponseEntity
import org.springframework.test.context.ContextConfiguration
import org.springframework.test.context.TestPropertySource
import org.springframework.test.context.junit4.SpringRunner
import org.springframework.web.bind.annotation.PathVariable
import org.springframework.web.bind.annotation.PostMapping
import org.springframework.web.bind.annotation.RequestMapping
import org.springframework.web.bind.annotation.RestController
import kotlin.test.assertEquals
import kotlin.test.assertNotNull

/**
 * Unit test cases for DMaap publisher code.
 */
@RunWith(SpringRunner::class)
@EnableAutoConfiguration(exclude = [DataSourceAutoConfiguration::class])
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
@ContextConfiguration(classes = [BluePrintDmaapLibConfiguration::class, TestController::class,
    BlueprintPropertyConfiguration::class, BluePrintProperties::class])
@TestPropertySource(properties = ["server.port=9111",
    "blueprintsprocessor.dmaapclient.aai.topic=cds_aai",
    "blueprintsprocessor.dmaapclient.aai.type=HTTPNOAUTH",
    "blueprintsprocessor.dmaapclient.aai.host=127.0.0.1:9111",
    "blueprintsprocessor.dmaapclient.multi.topic=cds_multi1,cds_multi2",
    "blueprintsprocessor.dmaapclient.multi.type=HTTPNOAUTH",
    "blueprintsprocessor.dmaapclient.multi.host=127.0.0.1:9111"])
class TestDmaapEventPublisher {

    @Autowired
    lateinit var dmaapService : BluePrintDmaapLibPropertyService

    /**
     * Tests the event properties being set properly and sent as request.
     */
    @Test
    fun testEventProperties() {
        val strList = mutableListOf<String>()
        val dmaapClient = dmaapService.blueprintDmaapClientService("aai")

        strList.add("{\n" +
                "    \"a\" : \"hello\"\n" +
                "}")
        dmaapClient.sendMessage(strList)
        val msgs = dmaapClient.close(2)
        assertEquals(msgs!!.size, 1)
        val topic1 = msgs.get(0)
        assertEquals(topic1!!.size, 0)
    }

    /**
     * Tests the event properties being set properly and sent as request with
     * single message.
     */
    @Test
    fun testEventPropertiesWithSingleMsg() {
        val dmaapClient = dmaapService.blueprintDmaapClientService("aai")
        val str : String = "{\n" +
                "    \"a\" : \"hello\"\n" +
                "}"
        dmaapClient.sendMessage(str)
        val msgs = dmaapClient.close(2)
        assertEquals(msgs!!.size, 1)
        val topic1 = msgs.get(0)
        assertEquals(topic1!!.size, 0)
    }

    /**
     * Tests the event properties with multiple topics.
     */
    @Test
    fun testMultiTopicProperties() {
        val strList = mutableListOf<String>()
        val dmaapClient = dmaapService.blueprintDmaapClientService("multi")

        strList.add("{\n" +
                "    \"a\" : \"hello\"\n" +
                "}")
        dmaapClient.sendMessage(strList)
        val msgs = dmaapClient.close(2)
        assertEquals(msgs!!.size, 2)
        val topic1 = msgs.get(0)
        assertEquals(topic1!!.size, 0)
        val topic2 = msgs.get(1)
        assertEquals(topic2!!.size, 0)
    }


    /**
     * Tests the event properties with multiple topics with JSON node as input.
     */
    @Test
    fun testMultiTopicPropertiesWithJsonInput() {
        val jsonString = "{\n" +
                "    \"topic\" : \"cds_json1,cds_json2\",\n" +
                "    \"type\" : \"HTTPNOAUTH\",\n" +
                "    \"host\" : \"127.0.0.1:9111\"\n" +
                "}"
        val mapper = ObjectMapper()
        val node = mapper.readTree(jsonString)
        val strList = mutableListOf<String>()
        val dmaapClient = dmaapService.blueprintDmaapClientService(node)

        strList.add("{\n" +
                "    \"a\" : \"hello\"\n" +
                "}")
        dmaapClient.sendMessage(strList)
        val msgs = dmaapClient.close(2)
        assertEquals(msgs!!.size, 2)
        val topic1 = msgs.get(0)
        assertEquals(topic1!!.size, 0)
        val topic2 = msgs.get(1)
        assertEquals(topic2!!.size, 0)
    }


    /**
     * Tests the event properties with multiple messages.
     */
    @Test
    fun testMultiMsgsProperties() {
        val strList = mutableListOf<String>()
        val dmaapClient = dmaapService.blueprintDmaapClientService("aai")

        strList.add("{\n" +
                "    \"a\" : \"hello\"\n" +
                "}")
        strList.add("{\n" +
                "    \"a\" : \"second\"\n" +
                "}")
        dmaapClient.sendMessage(strList)
        val msgs = dmaapClient.close(2)
        assertEquals(msgs!!.size, 1)
        val topic1 = msgs.get(0)
        assertEquals(topic1!!.size, 0)
    }

    /**
     * Tests the DMAAP client properties generated with the complete prefix.
     */
    @Test
    fun testDmaapClientProperties() {
        val properties = dmaapService.dmaapClientProperties(
            "blueprintsprocessor.dmaapclient.aai")
        assertNotNull(properties, "failed to create property bean")
        assertNotNull(properties.host, "failed to get url property" +
                " in property bean")
    }

    /**
     * Tests the blueprint DMAAP client service with only selector prefix.
     */
    @Test
    fun testBlueprintDmaapClientService() {
        val blueprintDmaapClientService =
            dmaapService.blueprintDmaapClientService("aai")
        assertNotNull(blueprintDmaapClientService,
            "failed to create blueprintDmaapClientService")
    }

}

/**
 * Rest controller for testing the client request that is sent.
 */
@RestController
@RequestMapping(path = ["/events"])
open class TestController {

    /**
     * Accepts request for a topic and sends a message as response.
     */
    @PostMapping(path = ["/{topic}"])
    fun postTopic(@PathVariable(value = "topic") topic : String):
            ResponseEntity<Any> {
        var a = "{\n" +
                "    \"message\" : \"The message is published into $topic " +
                "topic\"\n" +
                "}"
        return ResponseEntity(a, HttpStatus.OK)
    }
}
