/**
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.ofbiz.assetmaint;

import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import javolution.util.FastMap;

import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilMisc;
import org.ofbiz.base.util.UtilProperties;
import org.ofbiz.entity.Delegator;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.entity.GenericValue;
import org.ofbiz.entity.condition.EntityCondition;
import org.ofbiz.entity.condition.EntityConditionList;
import org.ofbiz.entity.condition.EntityExpr;
import org.ofbiz.entity.condition.EntityOperator;
import org.ofbiz.product.product.ProductWorker;
import org.ofbiz.service.DispatchContext;
import org.ofbiz.service.GenericServiceException;
import org.ofbiz.service.LocalDispatcher;
import org.ofbiz.service.ServiceUtil;

public class FixedAssetMaintServices {

    public static final String module = FixedAssetMaintServices.class.getName();
    public static final String resource = "AssetMaintUiLabels";

    public static Map<String, Object> addPartFixedAssetMaint(DispatchContext ctx, Map<String, Object> context) {
        LocalDispatcher dispatcher = ctx.getDispatcher();
        Delegator delegator = ctx.getDelegator();
        Locale locale = (Locale) context.get("locale");
        String fixedAssetId = (String)context.get("fixedAssetId");
        String maintHistSeqId = (String)context.get("maintHistSeqId");
        String productId = (String)context.get("productId");
        String facilityId = (String)context.get("facilityId");
        Double quantity = (Double)context.get("quantity");
        double requestedQty = quantity.doubleValue();

        try {
            GenericValue product = ProductWorker.findProduct(delegator, productId);
            if (product == null) {
                return ServiceUtil.returnError(UtilProperties.getMessage(resource, "AssetMaintInvalidPartProductIdError", UtilMisc.toMap("productId", productId), locale));
            }
            Map<String, ? extends Object> findCurrInventoryParams =  UtilMisc.toMap("productId", productId, "facilityId", facilityId);
            GenericValue userLogin = (GenericValue) context.get("userLogin");
            // Call issuance service
            Map<String, Object> result = dispatcher.runSync("getInventoryAvailableByFacility", findCurrInventoryParams);
            if (ServiceUtil.isError(result)) {
                return ServiceUtil.returnError(UtilProperties.getMessage(resource, "AssetMaintProblemGettingInventoryLevel", locale) + productId , null, null, result);
            }
            Object atpObj = result.get("availableToPromiseTotal");
            double atp = 0.0;
            if (atpObj != null) {
                atp = Double.parseDouble(atpObj.toString());
            }
            if (requestedQty > atp) {
                return ServiceUtil.returnError(UtilProperties.getMessage(resource, "AssetMaintLowPartInventoryError", UtilMisc.toMap("productId", productId , "quantity", Double.toString(atp)), locale));
            }
            EntityConditionList<EntityExpr> ecl = EntityCondition.makeCondition(UtilMisc.toList(
                    EntityCondition.makeCondition("productId", EntityOperator.EQUALS, productId),
                    EntityCondition.makeCondition("facilityId", EntityOperator.EQUALS, facilityId),
                    EntityCondition.makeCondition("availableToPromiseTotal", EntityOperator.GREATER_THAN, "0")),
                    EntityOperator.AND);
            List<GenericValue> inventoryItems = delegator.findList("InventoryItem", ecl, null, null, null, false);   //&& inventoryItems.size() > 0
            Iterator<GenericValue> itr = inventoryItems.iterator();
            while (requestedQty > 0 && itr.hasNext()) {
                GenericValue inventoryItem = itr.next();
                String inventoryItemId = inventoryItem.getString("inventoryItemId");
                atp = inventoryItem.getDouble("availableToPromiseTotal").doubleValue();
                findCurrInventoryParams = UtilMisc.toMap("inventoryItemId", inventoryItemId);
                Double issueQuantity = null;
                if (requestedQty > atp) {
                    issueQuantity = new Double(atp);
                } else {
                    issueQuantity = new Double(requestedQty);
                }
                Map<String, Object> itemIssuanceCtx = FastMap.newInstance();
                itemIssuanceCtx.put("userLogin", userLogin);
                itemIssuanceCtx.put("inventoryItemId", inventoryItemId);
                itemIssuanceCtx.put("fixedAssetId", fixedAssetId);
                itemIssuanceCtx.put("maintHistSeqId", maintHistSeqId);
                itemIssuanceCtx.put("quantity", issueQuantity);
                // Call issuance service
                result = dispatcher.runSync("issueInventoryItemToFixedAssetMaint",itemIssuanceCtx);
                if (ServiceUtil.isError(result)) {
                    return ServiceUtil.returnError(UtilProperties.getMessage(resource, "AssetMaintProblemCallingService", locale), null, null, result);
                }
                requestedQty = requestedQty - issueQuantity.doubleValue();
            }
        } catch (GenericEntityException e) {
            Debug.logError("Problem in retriving data from database", module);
        } catch (GenericServiceException e) {
            Debug.logError("Problem in calling service issueInventoryItemToFixedAssetMaint", module);
            return ServiceUtil.returnError(UtilProperties.getMessage(resource, "AssetMaintProblemCallingService", locale));
        }
        return ServiceUtil.returnSuccess();
    }
}