/*
 * 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.blueprintsprocessor.functions.resource.resolution.processor

import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.CapabilityResourceSource
import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR
import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.utils.ResourceAssignmentUtils
import org.onap.ccsdk.cds.blueprintsprocessor.services.execution.ComponentFunctionScriptingService
import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
import org.onap.ccsdk.cds.controllerblueprints.resource.dict.ResourceAssignment
import org.slf4j.LoggerFactory
import org.springframework.beans.factory.config.ConfigurableBeanFactory
import org.springframework.context.annotation.Scope
import org.springframework.stereotype.Service

@Service("${PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-capability")
@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
open class CapabilityResourceResolutionProcessor(private var componentFunctionScriptingService: ComponentFunctionScriptingService)
    : ResourceAssignmentProcessor() {

    private val log = LoggerFactory.getLogger(CapabilityResourceResolutionProcessor::class.java)

    var componentResourceAssignmentProcessor: ResourceAssignmentProcessor? = null

    override fun getName(): String {
        return "${PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-capability"
    }

    override suspend fun processNB(resourceAssignment: ResourceAssignment) {

        val dName = resourceAssignment.dictionaryName!!
        val dSource = resourceAssignment.dictionarySource!!
        val resourceDefinition = resourceDefinition(resourceAssignment.dictionaryName!!)

        /** Check Resource Assignment has the source definitions, If not get from Resource Definition **/
        val resourceSource = resourceAssignment.dictionarySourceDefinition
                ?: resourceDefinition?.sources?.get(dSource)
                ?: throw BluePrintProcessorException("couldn't get resource definition $dName source($dSource)")

        val resourceSourceProps = checkNotNull(resourceSource.properties) { "failed to get $resourceSource properties" }
        /**
         * Get the Capability Resource Source Info from Property Definitions.
         */
        val capabilityResourceSourceProperty = JacksonUtils
                .getInstanceFromMap(resourceSourceProps, CapabilityResourceSource::class.java)

        val scriptType = capabilityResourceSourceProperty.scriptType
        val scriptClassReference = capabilityResourceSourceProperty.scriptClassReference
        val instanceDependencies = capabilityResourceSourceProperty.instanceDependencies ?: listOf()

        componentResourceAssignmentProcessor = scriptInstance(scriptType, scriptClassReference, instanceDependencies)

        checkNotNull(componentResourceAssignmentProcessor) {
            "failed to get capability resource assignment processor($scriptClassReference)"
        }

        // Assign Current Blueprint runtime and ResourceDictionaries
        componentResourceAssignmentProcessor!!.scriptType = scriptType
        componentResourceAssignmentProcessor!!.raRuntimeService = raRuntimeService
        componentResourceAssignmentProcessor!!.resourceDictionaries = resourceDictionaries

        // Invoke componentResourceAssignmentProcessor
        componentResourceAssignmentProcessor!!.executeScript(resourceAssignment)
    }

    override suspend fun recoverNB(runtimeException: RuntimeException, resourceAssignment: ResourceAssignment) {
        raRuntimeService.getBluePrintError()
                .addError("Failed in CapabilityResourceResolutionProcessor : ${runtimeException.message}")
        ResourceAssignmentUtils.setFailedResourceDataValue(resourceAssignment, runtimeException.message)
    }

    suspend fun scriptInstance(scriptType: String, scriptClassReference: String, instanceDependencies: List<String>)
            : ResourceAssignmentProcessor {

        log.info("creating resource resolution of script type($scriptType), reference name($scriptClassReference) and" +
                "instanceDependencies($instanceDependencies)")

        val scriptComponent = componentFunctionScriptingService
                .scriptInstance<ResourceAssignmentProcessor>(raRuntimeService.bluePrintContext(), scriptType,
                        scriptClassReference)

        return scriptComponent
    }

}