/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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.apache.geode.rest.internal.web.controllers;

import static org.apache.geode.cache.Region.SEPARATOR;

import java.util.ArrayList;
import java.util.Collection;

import org.apache.geode.cache.Cache;
import org.apache.geode.cache.CacheClosedException;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionContext;
import org.apache.geode.cache.query.FunctionDomainException;
import org.apache.geode.cache.query.NameResolutionException;
import org.apache.geode.cache.query.Query;
import org.apache.geode.cache.query.QueryInvocationTargetException;
import org.apache.geode.cache.query.SelectResults;
import org.apache.geode.cache.query.TypeMismatchException;


/**
 * The GetDeliveredOrders class is a gemfire function that gives details about delivered orders.
 * <p>
 *
 * @since GemFire 8.0
 */

public class GetDeliveredOrders implements Function {
  @Override
  public void execute(FunctionContext context) {

    Cache c = null;
    ArrayList<Object> vals = new ArrayList<>();
    try {
      c = CacheFactory.getAnyInstance();
    } catch (CacheClosedException ex) {
      vals.add("NoCacheFoundResult");
      context.getResultSender().lastResult(vals);
    }

    String oql =
        "SELECT o.purchaseOrderNo, o.deliveryDate  FROM " + SEPARATOR
            + "orders o WHERE o.deliveryDate != NULL";
    final Query query = c.getQueryService().newQuery(oql);

    SelectResults result = null;
    try {
      result = (SelectResults) query.execute();
      int resultSize = result.size();

      if (result instanceof Collection<?>) {
        for (Object item : result) {
          vals.add(item);
        }
      }
    } catch (FunctionDomainException e) {
      if (c != null) {
        c.getLogger()
            .info("Caught FunctionDomainException while executing function GetDeliveredOrders: "
                + e.getMessage());
      }

    } catch (TypeMismatchException e) {
      if (c != null) {
        c.getLogger()
            .info("Caught TypeMismatchException while executing function GetDeliveredOrders: "
                + e.getMessage());
      }

    } catch (NameResolutionException e) {
      if (c != null) {
        c.getLogger()
            .info("Caught NameResolutionException while executing function GetDeliveredOrders: "
                + e.getMessage());
      }

    } catch (QueryInvocationTargetException e) {
      if (c != null) {
        c.getLogger().info(
            "Caught QueryInvocationTargetException while executing function GetDeliveredOrders: "
                + e.getMessage());
      }

    }

    context.getResultSender().lastResult(vals);
  }

  @Override
  public String getId() {
    return "GetDeliveredOrders";
  }

  @Override
  public boolean hasResult() {
    return true;
  }

  @Override
  public boolean optimizeForWrite() {
    return false;
  }

  @Override
  public boolean isHA() {
    return false;
  }

}
