/*
 * Copyright © 2017-2018 AT&T Intellectual Property.
 *
 * Modifications Copyright © 2019 IBM, Bell Canada.
 *
 * 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.onap.ccsdk.cds.controllerblueprints.core.service

import kotlinx.coroutines.runBlocking
import org.junit.Test
import org.onap.ccsdk.cds.controllerblueprints.core.TestConstants
import org.onap.ccsdk.cds.controllerblueprints.core.utils.BluePrintMetadataUtils
import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
import kotlin.test.BeforeTest
import kotlin.test.assertEquals
import kotlin.test.assertNotNull

class BluePrintTemplateServiceTest {

    lateinit var blueprintRuntime: BluePrintRuntimeService<*>

    @BeforeTest
    fun setup() {
        val blueprintBasePath = TestConstants.PATH_TEST_BLUEPRINTS_BASECONFIG
        blueprintRuntime = BluePrintMetadataUtils.bluePrintRuntime("1234", blueprintBasePath)
    }

    @Test
    fun testVelocityGeneratedContent() {
        runBlocking {
            val template = JacksonUtils.getClassPathFileContent("templates/base-config-velocity-template.vtl")
            val json = JacksonUtils.getClassPathFileContent("templates/base-config-data-velocity.json")

            val content = BluePrintVelocityTemplateService.generateContent(template, json)
            assertNotNull(content, "failed to generate content for velocity template")
        }
    }

    @Test
    fun testJinjaGeneratedContent() {
        runBlocking {
            val template = JacksonUtils.getClassPathFileContent("templates/master.jinja")
            val json = JacksonUtils.getClassPathFileContent("templates/base-config-data-jinja.json")

            val element: MutableMap<String, Any> = mutableMapOf()
            element["additional_array"] = arrayListOf(
                hashMapOf("name" to "Element1", "location" to "Region0"),
                hashMapOf("name" to "Element2", "location" to "Region1")
            )

            val content = BluePrintJinjaTemplateService.generateContent(template, json, false, element)
            assertNotNull(content, "failed to generate content for jinja template")
        }
    }

    @Test
    fun `Unresolved variable should be kept as-is - standalone velocity template mesh test`() {
        runBlocking {
            val template =
                JacksonUtils.getClassPathFileContent("templates/default-variable-value-velocity-template.vtl")
            val json = JacksonUtils.getClassPathFileContent("templates/default-variable-value-data.json")

            val content = BluePrintVelocityTemplateService.generateContent(template, json)
            // first line represents a variable whose value was successfully retrieved,
            // second line contains a variable whose value could not be evaluated
            val expected = "sample-node0_hostname\n\${node0_backup_router_address}"
            assertEquals(expected, content, "No value variable should use default value")
        }
    }

    @Test
    fun `Unresolved variable should be kept as-is - standalone jinja template mesh test`() {
        runBlocking {
            val context = JacksonUtils.getClassPathFileContent("templates/default-variable-value-data.json")
            val jinjaTemplate =
                JacksonUtils.getClassPathFileContent("templates/default-variable-jinja-template.jinja")
            val renderedContent =
                BluePrintJinjaTemplateService.generateContent(jinjaTemplate, context, false, mutableMapOf())
            val expectedContent =
                JacksonUtils.getClassPathFileContent("templates/default-variable-jinja-template-resolved.jinja")
            assertEquals(expectedContent, renderedContent, "No value variable should use default value")
        }
    }
}