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/*
 * Copyright [2017] [Andy Moncsek]
 *
 * 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.jacpfx.vertx.rest.util;

import io.vertx.core.AsyncResult;
import io.vertx.core.eventbus.DeliveryOptions;
import io.vertx.core.eventbus.Message;
import io.vertx.ext.web.RoutingContext;
import java.io.Serializable;
import java.util.Map;
import java.util.Optional;
import java.util.function.Consumer;
import org.jacpfx.common.VxmsShared;
import org.jacpfx.common.encoder.Encoder;
import org.jacpfx.common.throwable.ThrowableFunction;
import org.jacpfx.common.throwable.ThrowableSupplier;
import org.jacpfx.vertx.rest.eventbus.blocking.EventbusBlockingExecution;
import org.jacpfx.vertx.rest.interfaces.blocking.ExecuteEventbusObjectCallBlocking;
import org.jacpfx.vertx.rest.interfaces.blocking.RecursiveBlockingExecutor;
import org.jacpfx.vertx.rest.interfaces.blocking.RetryBlockingExecutor;
import org.jacpfx.vertx.rest.response.blocking.ExecuteRSObjectResponse;
import org.jacpfx.vertx.rest.response.blocking.ExecuteRSStringResponse;

/**
 * Created by Andy Moncsek on 05.04.16.
 * Typed execution of event-bus calls and blocking object response
 */
public class EventbusObjectExecutionBlockingUtil {

  /**
   * create execution chain for event-bus request and reply to rest
   *
   * @param _methodId the method identifier
   * @param _targetId the event-bus target id
   * @param _message the message to send
   * @param _objectFunction the function to process the result message
   * @param _options the event-bus delivery options
   * @param _vxmsShared the vxmsShared instance, containing the Vertx instance and other shared
   * objects per instance
   * @param _failure the failure thrown while task execution
   * @param _errorMethodHandler the error-method handler
   * @param _context the vertx routing context
   * @param _headers the headers to pass to the response
   * @param _objectSupplier the supplier, producing the object response
   * @param _encoder the encoder to encode your objects
   * @param _errorHandler the error handler
   * @param _onFailureRespond the consumer that takes a Future with the alternate response value in
   * case of failure
   * @param _httpStatusCode the http status code to set for response
   * @param _httpErrorCode the http error code to set in case of failure handling
   * @param _retryCount the amount of retries before failure execution is triggered
   * @param _timeout the amount of time before the execution will be aborted
   * @param _delay the delay between an error and the retry
   * @param _circuitBreakerTimeout the amount of time before the circuit breaker closed again
   * @return the execution chain {@link ExecuteRSStringResponse}
   */
  public static ExecuteRSObjectResponse mapToObjectResponse(String _methodId,
      String _targetId,
      Object _message,
      DeliveryOptions _options,
      ThrowableFunction>, Serializable> _objectFunction,
      VxmsShared _vxmsShared,
      Throwable _failure,
      Consumer _errorMethodHandler,
      RoutingContext _context, Map _headers,
      ThrowableSupplier _objectSupplier,
      Encoder _encoder, Consumer _errorHandler,
      ThrowableFunction _onFailureRespond,
      int _httpStatusCode,
      int _httpErrorCode,
      int _retryCount,
      long _timeout,
      long _delay,
      long _circuitBreakerTimeout) {
    final DeliveryOptions _deliveryOptions = Optional.ofNullable(_options)
        .orElse(new DeliveryOptions());

    final RetryBlockingExecutor retry = (methodId,
        targetId,
        message,
        byteFunction,
        deliveryOptions,
        vxmsShared, failure,
        errorMethodHandler,
        context,
        headers,
        encoder,
        errorHandler,
        onFailureRespond,
        httpStatusCode,
        httpErrorCode, retryCount,
        timeout, delay, circuitBreakerTimeout) -> {
      final int decrementedCount = retryCount - 1;
      mapToObjectResponse(methodId,
          targetId, message,
          deliveryOptions,
          byteFunction,
          vxmsShared, failure,
          errorMethodHandler,
          context, headers,
          null,
          encoder,
          errorHandler,
          onFailureRespond,
          httpStatusCode,
          httpErrorCode,
          decrementedCount,
          timeout, delay,
          circuitBreakerTimeout).
          execute();
    };

    final RecursiveBlockingExecutor executor = (methodId,
        vxmsShared,
        failure,
        errorMethodHandler,
        context,
        headers,
        supplier,
        encoder,
        errorHandler,
        onFailureRespond,
        httpStatusCode, httpErrorCode,
        retryCount, timeout, delay, circuitBreakerTimeout) ->
        new ExecuteRSObjectResponse(methodId,
            vxmsShared, failure,
            errorMethodHandler,
            context, headers,
            supplier,
            null,
            encoder, errorHandler,
            onFailureRespond,
            httpStatusCode,
            httpErrorCode,
            retryCount, timeout, delay,
            circuitBreakerTimeout).
            execute();

    final ExecuteEventbusObjectCallBlocking excecuteEventBusAndReply = (vxmsShared, failure,
        errorMethodHandler,
        context, headers,
        encoder, errorHandler,
        onFailureRespond,
        httpStatusCode, httpErrorCode,
        retryCount, timeout,
        delay, circuitBreakerTimeout) ->
        EventbusBlockingExecution.sendMessageAndSupplyHandler(_methodId,
            _targetId, _message,
            _objectFunction,
            _deliveryOptions,
            vxmsShared, failure,
            errorMethodHandler,
            context, headers,
            encoder, errorHandler,
            onFailureRespond,
            httpStatusCode,
            httpErrorCode,
            retryCount,
            timeout, delay,
            circuitBreakerTimeout,
            executor, retry);
    return new ExecuteRSObjectResponse(_methodId, _vxmsShared, _failure, _errorMethodHandler,
        _context, _headers, _objectSupplier, excecuteEventBusAndReply,
        _encoder, _errorHandler, _onFailureRespond, _httpStatusCode, _httpErrorCode, _retryCount,
        _timeout, _delay, _circuitBreakerTimeout);
  }


}




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