Subversion Repositories SmartDukaan

package in.shop2020.catalog.dashboard.client;

import in.shop2020.catalog.dashboard.shared.Item;

import in.shop2020.catalog.dashboard.shared.Utils;

import in.shop2020.catalog.dashboard.shared.VendorItemMapping;

import in.shop2020.catalog.dashboard.shared.VendorPricings;

import java.util.HashMap;

import java.util.Map;

import java.util.Map.Entry;

import com.google.gwt.core.client.GWT;

import com.google.gwt.event.dom.client.ChangeEvent;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.uibinder.client.UiBinder;

import com.google.gwt.uibinder.client.UiField;

import com.google.gwt.uibinder.client.UiHandler;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.rpc.AsyncCallback;

import com.google.gwt.user.client.ui.Button;

import com.google.gwt.user.client.ui.CheckBox;

import com.google.gwt.user.client.ui.DialogBox;

import com.google.gwt.user.client.ui.FlexTable;

import com.google.gwt.user.client.ui.ListBox;

import com.google.gwt.user.client.ui.TextBox;

import com.google.gwt.user.client.ui.Widget;

import com.google.gwt.user.datepicker.client.DateBox;

/**

 * ItemForm is a DialogBox which is created on the click of Add Item button in ItemActions.

 * This contains UI fields to fill up item attributes. It also contains tables for adding

 * vendor prices and vendor mapping keys.

 *

 */

public class ItemForm extends DialogBox {

    interface ItemFormUiBinder extends UiBinder<Widget, ItemForm> {}

    private static ItemFormUiBinder uiBinder = GWT.create(ItemFormUiBinder.class);

    private final String HANDSETS = "Handsets",

                         ACCESSORIES = "Accessories";

    private final CatalogServiceAsync catalogService = GWT.create(CatalogService.class);

    private final int TABLE_INDEX_VENDORID = 0,

                      TABLE_INDEX_VENDOR_DESC = 1, 

                      TABLE_INDEX_ITEM_KEY = 2,

                      TABLE_INDEX_MOP = 2,

                      TABLE_INDEX_DP = 3,

                      TABLE_INDEX_TP = 4;

    @UiField ListBox vendorCategory;

    @UiField TextBox productGroup;

    @UiField TextBox brand, modelNumber, modelName, color, comments;

    @UiField TextBox mrp, sellingPrice, weight, bestDealText, bestDealValue, bestSellingRank;

    @UiField DateBox startDate, retireDate;

    @UiField Button addButton, cancelButton;

    @UiField CheckBox defaultForEntity, risky;

    @UiField FlexTable headerVendor, vendorTable;

    @UiField FlexTable headerVendorM, vendorTableM;

    @UiField ListBox preferredVendor, defaultWarehouse;

    public ItemForm(){

        setText("Add New Item");

        setWidget(uiBinder.createAndBindUi(this));

        initVendorKeysHeader();

        initVendorPricesHeader();

        vendorCategory.addItem(HANDSETS);

        vendorCategory.addItem(ACCESSORIES);

        productGroup.setText(HANDSETS);

        for(Entry<Long, String> e : Utils.getAllVendors().entrySet()){

        	preferredVendor.addItem(e.getValue());

        }

        for(Entry<Long, String> e : Utils.getAllWarehouses().entrySet()){

        	defaultWarehouse.addItem(e.getValue());

        }

    }

    /**

     * initialises vendor item key table header. Creates an Add button and

     * adds click event listener to it to create and pop up a dialog for adding 

     * a new vendor item key. 

     */

    private void initVendorKeysHeader(){

        headerVendorM.getColumnFormatter().setWidth(TABLE_INDEX_VENDORID, "128px");

        headerVendorM.getColumnFormatter().setWidth(TABLE_INDEX_VENDOR_DESC, "128px");

        headerVendorM.getColumnFormatter().setWidth(TABLE_INDEX_ITEM_KEY, "400px");

        headerVendorM.getColumnFormatter().setWidth(TABLE_INDEX_ITEM_KEY + 1, "50px");

        headerVendorM.setText(0, TABLE_INDEX_VENDORID, "Vendor Id");

        headerVendorM.setText(0, TABLE_INDEX_VENDOR_DESC, "Vendor");

        headerVendorM.setText(0, TABLE_INDEX_ITEM_KEY, "Item Key");

        headerVendorM.getCellFormatter().setVisible(0, TABLE_INDEX_VENDORID, false);

        Button addButton = new Button("Add");

        headerVendorM.setWidget(0, TABLE_INDEX_ITEM_KEY + 1, addButton);

        addButton.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                VendorMappingDialog vendorMappingDialog = new VendorMappingDialog(productGroup.getText().trim(), brand.getText().trim(), 

                        modelNumber.getText().trim(), color.getText().trim());

                vendorMappingDialog.updateButton.setText("Add");

                vendorMappingDialog.setVendorMappingUpdateListener(new VendorMappingDialog.VendorMappingUpdateListener() {

                    @Override

                    public boolean onUpdate(String key, long vendorId) {

                        final int row = vendorTableM.getRowCount();

                        vendorTableM.getColumnFormatter().setWidth(TABLE_INDEX_VENDORID, "128px");

                        vendorTableM.getColumnFormatter().setWidth(TABLE_INDEX_VENDOR_DESC, "128px");

                        vendorTableM.getColumnFormatter().setWidth(TABLE_INDEX_ITEM_KEY, "400px");

                        vendorTableM.getColumnFormatter().setWidth(TABLE_INDEX_ITEM_KEY + 1, "50px");

                        vendorTableM.setText(row, TABLE_INDEX_VENDORID, vendorId + "");

                        vendorTableM.setText(row, TABLE_INDEX_VENDOR_DESC, Utils.getVendorDesc(vendorId));

                        vendorTableM.setText(row, TABLE_INDEX_ITEM_KEY, key);

                        Button removeButton = new Button("X");

                        vendorTableM.setWidget(row, TABLE_INDEX_ITEM_KEY + 1, removeButton);

                        vendorTableM.getCellFormatter().setVisible(row, TABLE_INDEX_VENDORID, false);

                        removeButton.addClickHandler(new ClickHandler() {

                            @Override

                            public void onClick(ClickEvent event) {

                                vendorTableM.removeRow(row);

                            }

                        });

                        return true;

                    }

                });

                vendorMappingDialog.show();

            }

        });

    }

    /**

     * initialises vendor prices table header. Creates an Add button and

     * adds click event listener to it to create and pop up a dialog for adding 

     * a prices for a new vendor 

     */

    private void initVendorPricesHeader(){

        headerVendor.getColumnFormatter().setWidth(TABLE_INDEX_VENDORID, "128px");

        headerVendor.getColumnFormatter().setWidth(TABLE_INDEX_VENDOR_DESC, "128px");

        headerVendor.getColumnFormatter().setWidth(TABLE_INDEX_MOP, "128px");

        headerVendor.getColumnFormatter().setWidth(TABLE_INDEX_DP, "128px");

        headerVendor.getColumnFormatter().setWidth(TABLE_INDEX_TP, "128px");

        headerVendor.getColumnFormatter().setWidth(TABLE_INDEX_TP + 1, "50px");

        headerVendor.setText(0, TABLE_INDEX_VENDORID, "Vendor Id");

        headerVendor.setText(0, TABLE_INDEX_VENDOR_DESC, "Vendor");

        headerVendor.setText(0, TABLE_INDEX_MOP, "MOP");

        headerVendor.setText(0, TABLE_INDEX_DP, "Dealer Price");

        headerVendor.setText(0, TABLE_INDEX_TP, "Transfer Price");

        headerVendor.getCellFormatter().setVisible(0, TABLE_INDEX_VENDORID, false);

        Button addButton = new Button("Add");

        headerVendor.setWidget(0, TABLE_INDEX_TP + 1, addButton);

        addButton.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                VendorPricesDialog vendorPricesDialog = new VendorPricesDialog();

                vendorPricesDialog.updateButton.setText("Add");

                vendorPricesDialog.setVendorPriceUpdateListener(new VendorPricesDialog.VendorPriceUpdateListener() {

                    @Override

                    public boolean onUpdate(double mop, double dp, double tp, long vendorId) {

                        if(!vendorExists(vendorId)) {

                            Window.alert("Vendor already exists");

                            return false;

                        }

                        /*if(!validateVendorPrices(mop, dp, tp)) {

                            return false;

                        }*/

                        final int row = vendorTable.getRowCount();

                        vendorTable.getColumnFormatter().setWidth(TABLE_INDEX_VENDORID, "128px");

                        vendorTable.getColumnFormatter().setWidth(TABLE_INDEX_VENDOR_DESC, "128px");

                        vendorTable.getColumnFormatter().setWidth(TABLE_INDEX_MOP, "128px");

                        vendorTable.getColumnFormatter().setWidth(TABLE_INDEX_DP, "128px");

                        vendorTable.getColumnFormatter().setWidth(TABLE_INDEX_TP, "128px");

                        vendorTable.getColumnFormatter().setWidth(TABLE_INDEX_TP + 1, "50px");

                        vendorTable.setText(row, TABLE_INDEX_VENDORID, vendorId + "");

                        vendorTable.setText(row, TABLE_INDEX_VENDOR_DESC, Utils.getVendorDesc(vendorId));

                        vendorTable.setText(row, TABLE_INDEX_MOP, mop + "");

                        vendorTable.setText(row, TABLE_INDEX_DP, dp + "");

                        vendorTable.setText(row, TABLE_INDEX_TP, tp + "");

                        vendorTable.getCellFormatter().setVisible(row, TABLE_INDEX_VENDORID, false);

                        Button removeButton = new Button("X");

                        vendorTable.setWidget(row, TABLE_INDEX_TP + 1, removeButton);

                        removeButton.addClickHandler(new ClickHandler() {

                            @Override

                            public void onClick(ClickEvent event) {

                                vendorTable.removeRow(row);

                            }

                        });

                        return true;

                    }

                });

                vendorPricesDialog.show();

            }

        });

    }

    @UiHandler("addButton")

    /**

     * On add button click a new Item instance is created and all the information from UI fields is dumped in this item instance.

     * This item instance is then passed to the service to be added to the database.

     */

    void addItem(ClickEvent event) {

        //TODO: validate UI fields

        catalogService.checkSimilarItem(brand.getText().trim(), modelNumber.getText().trim(),

        		modelName.getText().trim(), color.getText().trim(), new AsyncCallback<Long>() {

            @Override

            public void onFailure(Throwable caught) {

                GWT.log("Error checking similar item");

                Window.alert("Error checking similar item");

                return;

            }

            @Override

            public void onSuccess(Long result) {

                if(result != 0) {

                    Window.alert("Similar product exists with Item Id " + result);

                    return;

                }

                addNewItem();

            }

        });

    }

    private void addNewItem() {

        Item item = new Item();

        item.setProductGroup(productGroup.getText().trim());

        item.setVendorCategory(vendorCategory.getItemText(vendorCategory.getSelectedIndex()));

        item.setBrand(brand.getText().trim());

        item.setModelNumber(modelNumber.getText().trim());

        item.setModelName(modelName.getText().trim());

        item.setColor(color.getText().trim());

        item.setComments(comments.getText().trim());

        try {

            if(!mrp.getText().trim().isEmpty()) {

                double mrpValue = Double.parseDouble(mrp.getText().trim());

                if(mrpValue <= 0) {

                    throw new NumberFormatException("Negative value of MRP");

                }

                item.setMrp(mrpValue);

            }

        } catch(NumberFormatException ex) {

            Window.alert("Invalid MRP format/value. Value shoule be greater than zero");

            return;

        }

        try {

            if(!sellingPrice.getText().trim().isEmpty()) {

                double spValue = Double.parseDouble(sellingPrice.getText().trim());

                if(spValue <= 0) {

                    throw new NumberFormatException("Negative value of Selling price");

                }

                item.setSellingPrice(spValue);

            }

        } catch(NumberFormatException ex) {

            Window.alert("Invalid Selling Price format/value. Value shoule be greater than zero");

            return;

        }

        try {

            if(!weight.getText().trim().isEmpty()) {

                double wtValue = Double.parseDouble(weight.getText().trim());

                if(wtValue <= 0) {

                    throw new NumberFormatException("Negative value of Weight");

                }

                item.setWeight(wtValue);

            }

        } catch(NumberFormatException ex) {

            Window.alert("Invalid weight format/value. Value shoule be greater than zero");

            return;

        }

        try {

            if(!startDate.getTextBox().getText().trim().equals("")) {

                item.setStartDate(startDate.getValue().getTime());

            }

        } catch(Exception ex) {

            Window.alert("Invalid start date format");

            return;

        }

        item.setBestDealsText(bestDealText.getText().trim());

        try {

            if(!bestDealValue.getText().trim().equals("")) {

                double bdValue = Double.parseDouble(bestDealValue.getText().trim());

                if(bdValue < 0) {

                    throw new NumberFormatException("Negative value of BestDealValue");

                }

                item.setBestDealsValue(bdValue);

            }

        } catch(NumberFormatException ex) {

            Window.alert("Invalid best deal value format");

            return;

        }

        try {

            if(!bestSellingRank.getText().trim().equals("")) {

                long bsrValue = Long.parseLong(bestSellingRank.getText().trim());

                if(bsrValue < 0) {

                    throw new NumberFormatException("Negative value of Best Selling Rank");

                }

                item.setBestSellingRank(bsrValue);

            }

        } catch(NumberFormatException ex) {

            Window.alert("Invalid best selling rank format");

            return;

        }

        item.setDefaultForEntity(defaultForEntity.getValue());

        item.setRisky(risky.getValue());

        item.setPreferredVendor(Utils.getVendorId(preferredVendor.getItemText(preferredVendor.getSelectedIndex())));

        item.setDefaultWarehouse(Utils.getWarehouseId(defaultWarehouse.getItemText(defaultWarehouse.getSelectedIndex())) + "");

        /*Create an instance of VendorPricings for each row in vendor pricing table. Set the vendor prices to the instance.

          Add the instance to map and set the map to the item instance created above.*/

        Map<Long, VendorPricings> vendorPrices = new HashMap<Long, VendorPricings>();

        VendorPricings v;

        for(int row = 0; row < vendorTable.getRowCount(); row++) {

            v = new VendorPricings();

            v.setMop(Double.parseDouble(vendorTable.getText(row, TABLE_INDEX_MOP)));

            v.setDealerPrice(Double.parseDouble(vendorTable.getText(row, TABLE_INDEX_DP)));

            v.setTransferPrice(Double.parseDouble(vendorTable.getText(row, TABLE_INDEX_TP)));

            v.setVendorId(Long.parseLong(vendorTable.getText(row, TABLE_INDEX_VENDORID)));

            vendorPrices.put(v.getVendorId(), v);

        }

        item.setVendorPricesMap(vendorPrices);

        /*Create an instance of VendorPricings for each row in vendor pricing table. Set the vendor prices to the instance.

        Add the instance to map and set the map to the item instance created above.*/

        Map<String, VendorItemMapping> vendorMappings = new HashMap<String, VendorItemMapping>();

        VendorItemMapping vMapping;

        for(int row = 0; row < vendorTableM.getRowCount(); row++) {

            vMapping = new VendorItemMapping();

            vMapping.setItemKey(vendorTableM.getText(row, TABLE_INDEX_ITEM_KEY));

            vMapping.setVendorId(Long.parseLong(vendorTableM.getText(row, TABLE_INDEX_VENDORID)));

            vendorMappings.put(vMapping.getVendorId() + Item.KEY_SEPARATOR + vMapping.getItemKey(), vMapping);

        }

        item.setVendorKeysMap(vendorMappings);

        if(!Utils.validateItem(item)) {

            return;

        }

        /*Service method to add item. */

        catalogService.addItem(item, new AsyncCallback<Long>() {

            @Override

            public void onSuccess(Long result) {

                if(result == null || result == 0) {

                    Window.alert("Error while adding item");

                    return;

                }

                Window.alert("Item added successfully. Id = " + result);

                hide();

            }

            @Override

            public void onFailure(Throwable caught) {

                caught.printStackTrace();

                Window.alert("Error while adding item");

            }

        });

    }

    @UiHandler("vendorCategory")

    void setProductGroup(ChangeEvent event) {

        if(HANDSETS.equals(vendorCategory.getItemText(vendorCategory.getSelectedIndex()))) {

            productGroup.setText(HANDSETS);

        } else {

            productGroup.setText("");

        }

    }

    @UiHandler("cancelButton")

    void closeForm(ClickEvent event) {

        this.hide();

    }

    /**

     * Checks if vendor details already exists corresponding to the vendor Id parameter. 

     */

    private boolean vendorExists(long vendorId) {

        long id;

        for(int i = 0; i < vendorTable.getRowCount(); i++) {

            id = Long.parseLong(vendorTable.getText(i, TABLE_INDEX_VENDORID));

            if(vendorId == id) {

                return false;

            }

        }

        return true;

    }

    /**

     * validate vendor prices (MOP, DealerPrice, TransferPrice)

     */

    @SuppressWarnings("unused")

	private boolean validateVendorPrices(double mop, double dp, double tp) {

        double mrpValue;

        try {

            mrpValue = Double.parseDouble(mrp.getText().trim());

        } catch (NumberFormatException ex) {

            Window.alert("Invalid MRP value.");

            return false;

        }

        if(mrpValue < mop) {

            Window.alert("MOP cannot be more than MRP.");

            return false;

        }

        if(tp > mop) {

            Window.alert("Transfer Price cannot be more than MOP.");

            return false;

        }

        return true;

    }

}