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 * 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.
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package org.apache.ofbiz.order.shoppingcart.shipping;

import java.math.BigDecimal;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.ofbiz.base.util.Debug;
import org.apache.ofbiz.base.util.UtilValidate;
import org.apache.ofbiz.entity.Delegator;
import org.apache.ofbiz.entity.GenericEntityException;
import org.apache.ofbiz.entity.GenericValue;
import org.apache.ofbiz.entity.util.EntityQuery;
import org.apache.ofbiz.order.shoppingcart.ShoppingCart;
import org.apache.ofbiz.order.shoppingcart.ShoppingCartItem;
import org.apache.ofbiz.product.store.ProductStoreWorker;
import org.apache.ofbiz.service.LocalDispatcher;
import org.apache.ofbiz.service.ServiceUtil;

public class ShippingEstimateWrapper {

    public static final String module = ShippingEstimateWrapper.class.getName();

    protected Delegator delegator = null;
    protected LocalDispatcher dispatcher = null;

    protected Map<GenericValue, BigDecimal> shippingEstimates = null;
    protected List<GenericValue> shippingMethods = null;

    protected GenericValue shippingAddress = null;
    protected Map<String, BigDecimal> shippableItemFeatures = null;
    protected List<BigDecimal> shippableItemSizes = null;
    protected List<Map<String, Object>> shippableItemInfo = null;
    protected String productStoreId = null;
    protected BigDecimal shippableQuantity = BigDecimal.ZERO;
    protected BigDecimal shippableWeight = BigDecimal.ZERO;
    protected BigDecimal shippableTotal = BigDecimal.ZERO;
    protected String partyId = null;
    protected String supplierPartyId = null;

    public static ShippingEstimateWrapper getWrapper(LocalDispatcher dispatcher, ShoppingCart cart, int shipGroup) {
        return new ShippingEstimateWrapper(dispatcher, cart, shipGroup);
    }

    public ShippingEstimateWrapper(LocalDispatcher dispatcher, ShoppingCart cart, int shipGroup) {
        this.dispatcher = dispatcher;
        this.delegator = cart.getDelegator();

        this.shippableItemFeatures = cart.getFeatureIdQtyMap(shipGroup);
        this.shippableItemSizes = cart.getShippableSizes(shipGroup);
        this.shippableItemInfo = cart.getShippableItemInfo(shipGroup);
        this.shippableQuantity = cart.getShippableQuantity(shipGroup);
        this.shippableWeight = cart.getShippableWeight(shipGroup);
        this.shippableTotal = cart.getShippableTotal(shipGroup);
        this.shippingAddress = cart.getShippingAddress(shipGroup);
        this.productStoreId = cart.getProductStoreId();
        this.partyId = cart.getPartyId();
        this.supplierPartyId = cart.getSupplierPartyId(shipGroup);

        BigDecimal totalAllowance = BigDecimal.ZERO;
        if (UtilValidate.isNotEmpty(cart.getShipGroupItems(shipGroup))) {
            try {
                for (ShoppingCartItem item : cart.getShipGroupItems(shipGroup).keySet()) {
                    GenericValue allowanceProductPrice = EntityQuery.use(delegator).from("ProductPrice").where("productPriceTypeId", "SHIPPING_ALLOWANCE", "productId", item.getProductId()).filterByDate().queryFirst();
                    if (allowanceProductPrice != null && UtilValidate.isNotEmpty(allowanceProductPrice.get("price"))) {
                        totalAllowance = totalAllowance.add(allowanceProductPrice.getBigDecimal("price")).multiply(item.getQuantity());
                    }
                }
            } catch (GenericEntityException gee) {
                Debug.logError(gee.getMessage(), module);
            }
        }
        this.loadShippingMethods();
        this.loadEstimates(totalAllowance);
    }

    protected void loadShippingMethods() {
        try {
            this.shippingMethods = ProductStoreWorker.getAvailableStoreShippingMethods(delegator, productStoreId,
                    shippingAddress, shippableItemSizes, shippableItemFeatures, shippableWeight, shippableTotal);
        } catch (Throwable t) {
            Debug.logError(t, module);
        }
    }

    protected void loadEstimates(BigDecimal totalAllowance) {
        this.shippingEstimates = new HashMap<GenericValue, BigDecimal>();
        if (shippingMethods != null) {
            for (GenericValue shipMethod : shippingMethods) {
                String shippingMethodTypeId = shipMethod.getString("shipmentMethodTypeId");
                String carrierRoleTypeId = shipMethod.getString("roleTypeId");
                String carrierPartyId = shipMethod.getString("partyId");
                String productStoreShipMethId = shipMethod.getString("productStoreShipMethId");
                String shippingCmId = shippingAddress != null ? shippingAddress.getString("contactMechId") : null;

                Map<String, Object> estimateMap = ShippingEvents.getShipGroupEstimate(dispatcher, delegator, "SALES_ORDER",
                        shippingMethodTypeId, carrierPartyId, carrierRoleTypeId, shippingCmId, productStoreId,
                        supplierPartyId, shippableItemInfo, shippableWeight, shippableQuantity, shippableTotal, partyId, productStoreShipMethId, totalAllowance);

                if (!ServiceUtil.isError(estimateMap)) {
                    BigDecimal shippingTotal = (BigDecimal) estimateMap.get("shippingTotal");
                    shippingEstimates.put(shipMethod, shippingTotal);
                }
            }
        }
    }

    public List<GenericValue> getShippingMethods() {
        return shippingMethods;
    }

    public Map<GenericValue, BigDecimal> getAllEstimates() {
        return shippingEstimates;
    }

    public BigDecimal getShippingEstimate(GenericValue storeCarrierShipMethod) {
        return shippingEstimates.get(storeCarrierShipMethod);
    }

}