package de.ntec.dehn.cd2;

import static de.ntec.dehn.cd2.Const.*;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import de.ntec.dehn.util.TWUtils;

import thinwire.ui.AlignX;
import thinwire.ui.Application;
import thinwire.ui.Button;
import thinwire.ui.Component;
import thinwire.ui.Container;
import thinwire.ui.Frame;
import thinwire.ui.GridBox;
import thinwire.ui.Label;
import thinwire.ui.MessageBox;
import thinwire.ui.TextField;
import thinwire.ui.GridBox.Column;
import thinwire.ui.GridBox.Row;
import thinwire.ui.event.ActionEvent;
import thinwire.ui.event.ActionListener;
import thinwire.ui.event.KeyPressEvent;
import thinwire.ui.event.KeyPressListener;
import thinwire.ui.event.PropertyChangeEvent;
import thinwire.ui.event.PropertyChangeListener;
import thinwire.ui.style.Color;
import thinwire.ui.Panel;
import thinwire.ui.ScrollType;

public class WareToMarkt {

    // -----------------  Constants ------------------------------------
    private static final String TITLE= "Crossdocking 2 - Verteilung";
    private static final String WARE_TO_MARKETS = "Verteilung";
    private static final Log fLog= LogFactory.getLog(WareToMarkt.class);
    
    // -----------------  Fields ---------------------------------------
    private final DehnDao fDao;
    int fTotal= 0;
    int fDistributed= 0;
    private Map<String,Boolean> fArticleMap= new HashMap<String, Boolean>();
    private CheckDigitDialog fCheckDigitDialog= new CheckDigitDialog();

    // ----------------- Initializer and Constructors ------------------
    public WareToMarkt(final DehnDao dao) {
        fDao = dao;
        fLog.info("WareToMarkt created");
    }
    
    // -----------------  Methods --------------------------------------
    public void start(String terminal) { 
        final Frame frame= Application.current().getFrame(); 
        frame.setTitle(TITLE);
        frame.setScroll(ScrollType.AS_NEEDED);
        final Panel pnOrder= new Panel();
        pnOrder.setBounds(0,0,frame.getWidth(),TF_HEIGHT*5);
        List<Component> childrenPnOrder= pnOrder.getChildren();
        Label lbNVETitle= new Label(NVE);
        lbNVETitle.setBounds(MARGIN,MARGIN,LABEL_WIDTH,LABEL_HEIGHT);
        childrenPnOrder.add(lbNVETitle);
        final TextField tfNve= new TextField();
        TWUtils.putUnder(tfNve,lbNVETitle,SPACING/2,TF_WIDTH*2,TF_HEIGHT);
        tfNve.setEditMask(MASK_NVE);
        childrenPnOrder.add(tfNve);
        final Button btOrder= TWUtils.getGoButton();
        TWUtils.putToRight(btOrder,tfNve,SPACING);
        childrenPnOrder.add(btOrder);
        final GridBox gbCollectiveOrder= new GridBox();
        TWUtils.putToRight(gbCollectiveOrder,btOrder,SPACING,TF_WIDTH+TF_WIDTH/3,TF_HEIGHT*4);
        gbCollectiveOrder.setVisibleHeader(false);
        final Column colCollectiveOrder= new Column();
        gbCollectiveOrder.getColumns().add(colCollectiveOrder);
        gbCollectiveOrder.setEnabled(false);
        gbCollectiveOrder.getStyle().getBackground().setColor(
                pnOrder.getStyle().getBackground().getColor());
        childrenPnOrder.add(gbCollectiveOrder);
        Label lbCollectiveOrderTitle= new Label(COLLECTIVE_ORDER_ID);
        lbCollectiveOrderTitle.setBounds(gbCollectiveOrder.getX(),lbNVETitle.getY(),
                LABEL_WIDTH,LABEL_HEIGHT);
        childrenPnOrder.add(lbCollectiveOrderTitle);
        final Panel pnArticle= new Panel();
        btOrder.addActionListener(Button.ACTION_CLICK,new ActionListener(){
            public void actionPerformed(ActionEvent ev) {
                if ("".equals(tfNve.getText())) {
                    MessageBox.confirm(SHORT_OR_EMPTY_NVE);
                    return;
                }
                Object[][] collectiveOrders= fDao.getCollectiveOrderByNve(tfNve.getText());
                if (collectiveOrders.length==0) {
                    MessageBox.confirm(NO_COLLECTIVE_ORDER_ASSOSIATED_WITH_NVE);
                    return;
                }
                for (Object[] order: collectiveOrders) {
                    gbCollectiveOrder.getRows().add(new Row(order));
                }
                fArticleMap=fDao.getArticleMap(tfNve.getText());
                flipFlop(pnArticle,pnOrder);
            }
        });
        tfNve.addKeyPressListener(KEY_ENTER,new KeyPressListener(){
            public void keyPress(KeyPressEvent ev) {
                btOrder.fireAction(Button.ACTION_CLICK);
            }
        });
        pnOrder.setHeight(TWUtils.getNextY(gbCollectiveOrder,MARGIN));
        frame.getChildren().add(pnOrder);
        final List<Component> childrenPnArticle = pnArticle.getChildren();
        pnArticle.setBounds(0,0,frame.getWidth(),TF_HEIGHT*5);
        TWUtils.putUnder(pnArticle,pnOrder,SPACING,TF_HEIGHT*5);
        frame.getChildren().add(pnArticle);
        final Panel pnWare= new Panel();
        final List<Component> childrenPnWare = pnWare.getChildren();        
        pnWare.setEnabled(false);
        final Label lbEanTitle= new Label(EAN);
        lbEanTitle.setBounds(MARGIN,MARGIN,LABEL_WIDTH,LABEL_HEIGHT);
        childrenPnArticle.add(lbEanTitle);
        final Label lbArticleNoTitle= new Label(ARTICLE_NUMBER);
        TWUtils.putToRight(lbArticleNoTitle,lbEanTitle,SPACING*2+SMALL_BUTTON_SIZE,LABEL_WIDTH);
        childrenPnArticle.add(lbArticleNoTitle);
        final TextField tfEan= new TextField();
        TWUtils.putUnder(tfEan,lbEanTitle,SPACING/2,TF_WIDTH,TF_HEIGHT);
        tfEan.setEditMask(MASK_EAN);
        childrenPnArticle.add(tfEan);
        final Button btArticleNo= TWUtils.getGoButton();
        TWUtils.putToRight(btArticleNo,tfEan,SPACING);
        childrenPnArticle.add(btArticleNo);
        final Label lbArticleNo= new Label();
        TWUtils.putToRight(lbArticleNo,btArticleNo,SPACING,LABEL_WIDTH);
        lbArticleNo.getStyle().getBackground().setColor(Color.LIGHTYELLOW);
        childrenPnArticle.add(lbArticleNo);
        pnArticle.setHeight(TWUtils.getNextY(btArticleNo,MARGIN));
        TWUtils.putUnder(pnWare,pnArticle,SPACING,TF_HEIGHT*15);        
        frame.getChildren().add(pnWare);
        final Label lbWareToMarkets=new Label(WARE_TO_MARKETS);
        lbWareToMarkets.setBounds(MARGIN,MARGIN,LABEL_WIDTH,LABEL_HEIGHT);
        childrenPnWare.add(lbWareToMarkets);
        final Label lbTotalTitle= new Label(Const.TOTAL);
        TWUtils.putToRight(lbTotalTitle,lbWareToMarkets,LABEL_WIDTH,LABEL_WIDTH);
        childrenPnWare.add(lbTotalTitle);
        final Label lbTotal= new Label();
        TWUtils.putToRight(lbTotal,lbTotalTitle,SPACING/2,LABEL_WIDTH);
        lbTotal.getStyle().getBackground().setColor(Color.LIGHTYELLOW);
        childrenPnWare.add(lbTotal);
        final Label lbDistributedTitle= new Label(Const.DISTRIBUTED);
        TWUtils.putToRight(lbDistributedTitle,lbTotal,SPACING,LABEL_WIDTH);
        childrenPnWare.add(lbDistributedTitle);
        final Label lbDistributed= new Label();
        TWUtils.putToRight(lbDistributed,lbDistributedTitle,SPACING,LABEL_WIDTH);
        lbTotal.getStyle().getBackground().setColor(Color.LIGHTYELLOW);
        childrenPnWare.add(lbDistributed);
        final GridBox gbWareToMarkets= new GridBox();
        gbWareToMarkets.setVisibleHeader(true);
        btArticleNo.addActionListener(Button.ACTION_CLICK, new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                if ("".equals(tfEan.getText())) {
                    MessageBox.confirm(Const.ARTICLE_NOT_SPECIFIED);
                    return;
                }
                String articleNo= fDao.getArticleByEan(tfEan.getText());
                if (articleNo==null) {
                    MessageBox.confirm(Const.UNKNOWN_EAN);
                    return;
                }
                lbArticleNo.setText(articleNo);
                Object[][] marktsForArticle= 
                    fDao.getMarktsForArticle(tfNve.getText(),articleNo);
                if (marktsForArticle==null) {
                    MessageBox.confirm(Const.ARTICLE_NOT_IN_ORDER);
                    return;
                }
                fTotal= 0;
                fDistributed= 0;
                for (Object[] objects : marktsForArticle) {
                    gbWareToMarkets.getRows().add(new Row(objects));
                    // It is supposed that last column is check digit, so delivered value is next to last
                    fDistributed+=(Integer)objects[objects.length-2];
                    fTotal= fDistributed;
                }
                lbTotal.setText(String.valueOf(fTotal));
                lbDistributed.setText(String.valueOf(fDistributed));
                flipFlop(pnWare,pnArticle);
                fLog.trace("btArticleNo action");
            }
        });
        tfEan.addKeyPressListener(KEY_ENTER,new KeyPressListener(){
            public void keyPress(KeyPressEvent ev) {
                btArticleNo.fireAction(Button.ACTION_CLICK);
            }
        });
        final Column colMarket= new Column();
        colMarket.setName(MARKET);
        gbWareToMarkets.getColumns().add(colMarket);
        final Column colPallete= new Column();
        colPallete.setName(NVE);
        colPallete.setWidth(150);
        gbWareToMarkets.getColumns().add(colPallete);
        final Column colArea= new Column();
        colArea.setName(Const.AREA);
        gbWareToMarkets.getColumns().add(colArea);
        final Column colOrderedQty= new Column();
        colOrderedQty.setName(ORDERED_QUANTITY);
        colOrderedQty.setAlignX(AlignX.RIGHT);
        gbWareToMarkets.getColumns().add(colOrderedQty);
        final Column colAssignedQty= new Column();
        colAssignedQty.setName(ASSIGNED_QUANTITY);
        colAssignedQty.setAlignX(AlignX.RIGHT);
        gbWareToMarkets.getColumns().add(colAssignedQty);
        final Column colChkDigit= new Column();
        colChkDigit.setName(CHECK_DIGIT);
        colChkDigit.setVisible(false);
        final Column colProcessed= new Column();
        colProcessed.setName("processed");
        colProcessed.setVisible(false);
        gbWareToMarkets.getColumns().add(colProcessed);        
        TWUtils.putUnder(gbWareToMarkets,lbWareToMarkets,SPACING,TF_WIDTH*7,TF_HEIGHT*7);
        childrenPnWare.add(gbWareToMarkets);
        final Label lbMarktTitle= new Label(MARKET);
        TWUtils.putUnder(lbMarktTitle,gbWareToMarkets,SPACING,LABEL_WIDTH,LABEL_HEIGHT);
        childrenPnWare.add(lbMarktTitle);
        final Label lbAssignedQty= new Label(ASSIGNED_QUANTITY);
        TWUtils.putToRight(lbAssignedQty,lbMarktTitle,SPACING,LABEL_WIDTH);
        childrenPnWare.add(lbAssignedQty);
        final Label lbMarkt= new Label();
        TWUtils.putUnder(lbMarkt,lbMarktTitle,SPACING/2,TF_HEIGHT);
        lbMarkt.getStyle().getBackground().setColor(Color.LIGHTYELLOW);
        childrenPnWare.add(lbMarkt);
        final TextField tfAssignedQty= new TextField();
        TWUtils.putUnder(tfAssignedQty,lbAssignedQty,SPACING/2,TF_WIDTH,TF_HEIGHT);
        tfAssignedQty.setEditMask(MASK_QTY);
        tfAssignedQty.setAlignX(AlignX.RIGHT);
        childrenPnWare.add(tfAssignedQty);
        gbWareToMarkets.addPropertyChangeListener(Row.PROPERTY_ROW_SELECTED, 
                new PropertyChangeListener(){
                    public void propertyChange(PropertyChangeEvent ev) {
                        Row row= (Row)ev.getSource();
                        lbMarkt.setText(row.get(colMarket.getIndex()).toString());
                        Object o= row.get(colAssignedQty.getIndex());
                        if (o==null) tfAssignedQty.setText("0"); 
                        else tfAssignedQty.setText(o.toString());
                    }            
        });
        final Button btAssignedQty= TWUtils.getGoButton();
        TWUtils.putToRight(btAssignedQty,tfAssignedQty,SPACING);
        childrenPnWare.add(btAssignedQty);
        btAssignedQty.addActionListener(Button.ACTION_CLICK, new ActionListener(){
            public void actionPerformed(ActionEvent ev) {
                if ("".equals(tfAssignedQty.getText())) {
                    MessageBox.confirm(QUANTITY_NOT_SPECIFIED);
                    return;
                }
                int ind= gbWareToMarkets.getSelectedRow().getIndex();
                int newVal=Integer.parseInt(tfAssignedQty.getText());                
                if (newVal>(Integer)colOrderedQty.get(ind)) {
                    MessageBox.confirm(OVERDELIVERY_IS_PROHIBITED);
                    return;
                }
                int distributedNewVal= fDistributed+newVal-
                    (colAssignedQty.get(ind)==null ? 0 : (Integer)colAssignedQty.get(ind));
                if (distributedNewVal>fTotal) {
                    MessageBox.confirm(Const.NOT_ENOUGH_GOODS);
                    return;
                }
                fch
                fDistributed=distributedNewVal;
                lbDistributed.setText(String.valueOf(fDistributed));
                colAssignedQty.set(ind,newVal);
                colProcessed.set(ind,"Y");
                markNextUnprocessed();
            }            
            private void markNextUnprocessed() {
                GridBox.Row row= gbWareToMarkets.getSelectedRow();
                int ind= row==null ? 0 : row.getIndex();
                for (int i= ind; i<colAssignedQty.size(); i++) {
                    if (colProcessed.get(i)==null || "".equals(colProcessed.get(i))) {
                        gbWareToMarkets.getRows().get(i).setSelected(true);
                        return;
                    }
                }
                for (int i= 0; i<ind; i++) {
                    if ("".equals(colAssignedQty.get(i))) {
                        gbWareToMarkets.getRows().get(i).setSelected(true);
                        return;
                    }
                }
            }
        });
        tfAssignedQty.addKeyPressListener(KEY_ENTER,new KeyPressListener() {
            public void keyPress(KeyPressEvent ev) {
                btAssignedQty.fireAction(Button.ACTION_CLICK);
            }
        });
        final Button btOk= TWUtils.getOkButton();
        TWUtils.putUnder(btOk,lbMarkt,SPACING*2,BUTTON_WIDTH,BUTTON_HEIGHT);
        childrenPnWare.add(btOk);
        final Button btCancel= TWUtils.getCancelButton();
        TWUtils.putToRight(btCancel,btOk,SPACING,BUTTON_WIDTH);
        childrenPnWare.add(btCancel);
        final ActionListener decisionHandler= new ActionListener() {
            public void actionPerformed(ActionEvent ev) {
                if (ev.getSource()==btOk) { 
                    if (!checkCompletness(colProcessed)) {
                        MessageBox.confirm(Const.NOT_ALL_MARKTS_OR_WARES_PROCESSED);
                        return;
                    }
                    final List closedPalettes=new ArrayList();
                    Object[][] distributedWares= new Object[3][gbWareToMarkets.getRows().size()
                        +closedPalettes.size()];
                    for(int i=0; i<gbWareToMarkets.getRows().size();i++) {
                        distributedWares[0][i]= colMarket.get(i);
                        distributedWares[1][i]= colPallete.get(i);
                        distributedWares[2][i]= colAssignedQty.get(i);
                    }
                    String article= lbArticleNo.getText(); 
                    fDao.acceptDistribution(article,distributedWares);
                    fArticleMap.put(article,true);
                    if (isLastArticle()) {
                        MessageBox.confirm(Const.ORDER_FULLFILLED);
                        fDao.closeOrders(colCollectiveOrder);
                    }
                }
                resetPanels();
            }
            public void resetPanels() {
                gbWareToMarkets.getRows().clear();
                tfAssignedQty.setText("");
                tfEan.setText("");
                lbArticleNo.setText("");
                lbDistributed.setText("");
                lbTotal.setText("");
                flipFlop(pnArticle,pnWare);
            }
        };
        btOk.addActionListener(Button.ACTION_CLICK,decisionHandler);
        btCancel.addActionListener(Button.ACTION_CLICK,decisionHandler);
        pnWare.setHeight(TWUtils.getNextY(btOk,MARGIN));
        flipFlop(pnArticle,pnWare);
        flipFlop(pnOrder,pnArticle);
        frame.setVisible(true);
    }
 
    private boolean checkCompletness(GridBox.Column colProcessed) {
        if (fDistributed<fTotal) return false; 
        int ind= 0;
        for (Object obj : colProcessed) {
            if (obj==null || "".equals(obj) ) {
                ((GridBox)colProcessed.getParent()).getRows().get(ind).setSelected(true);
                return false;
            }
            ind++;
        }
        return true;
    }

    private boolean isLastArticle() {
        return fArticleMap.containsValue(false);
    }

    private  void flipFlop(Container<Component> c1, Container<Component> c2) {
        for(Component component : c1.getChildren()) {
            component.setEnabled(true);
        }
        c1.setEnabled(true);
        for(Component component : c2.getChildren()) {
            component.setEnabled(false);
        }
        c2.setEnabled(false);
    }
}