/*
 * Copyright 1999,2004 The Apache Software Foundation.
 *
 * Licensed 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.
 */
/*
 * Created on 2007-2-14
 *
 */
package peaklau.eaglefund;


import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Graphics;

/**
 * Display stock index by image<br>
 * 
 *  <br>
 *  First, get the latest stock index data from http://www.peaklau.com/fund/stockIndex.php. <br>
 *         The requezt is the standard HTTP request.<br>
 *         eg:http://www.peaklau.com/fund/stockIndex.php?days=30<br>
 *  Then, use class StockImageData to parse the XML formated data.<br>
 *  Next, parse the data and show the important data.<br>
 *  
 * @author peaklau <br>
 *         email:<A HREF="mailto:peaklau@hotmail.com">peaklau@hotmail.com</A> <br>
 *         <a href="http://www.peaklau.com/fund/english/">HomePage</a> 
 * @version $Revision: 1.2 $ $Date: 2007/10/21 14:26:24 $
 */

public class StockImage extends TitleScreen implements CommandListener{ 
    private int days=0;
    private int[]values=null;
    private int[]tvalues=null;
    private int[]importantValues=null;
    private int importantCount=0;
    private int max=0;
    private int min=Integer.MAX_VALUE;
    private int maxIndex=days-1;
    private int minIndex=days-1;
    private boolean completed=false;
    
    public StockImage(int days,String title,String backDisplayable,INavigator navigator){
        super(title,backDisplayable,navigator);
        this.days=days;
        values=new int[days];
        tvalues=new int[days];
        importantValues=new int[days];
        setCommandListener(this);
    }
     
    
    protected void execute(){        
        setStatus("正在同步...");
        HttpClient httpClient=navigator.getHttpClient();
        try{
            httpClient.httpGet("http://"+host+"/fund/stockIndex.php?days="+days);
            StockImageData foo = new StockImageData(values);
            foo.init();
            byte[]buf=httpClient.getData();
            int size=httpClient.getSize();
            if(size>0){
            	foo.parseArray(buf,0,size);
            }
        }catch(Exception e){
            e.printStackTrace();
            setStatus("网络错误");
            return;
        }
        setStatus("正在分析数据");

        for(int i=0;i<days;i++){
            //System.out.println(values[i]);
            if(max<=values[i]){
                max=values[i];
                maxIndex=i;
            }
            if((min>values[i])&&(values[i]>=0)){
                min=values[i];
                minIndex=i;
            }            
        }        
        importantValues[minIndex]=1;
        importantValues[maxIndex]=1;
                
        if(max!=min){
        	for(int i=0;i<days;i++){
        		tvalues[i]=(values[i]-min)*100/(max-min);                
        	}
        }
        importantValues[days-1]=1;
  


       
        //local max and min
        for(int span=days10;span<days-span-1;span++){
            for(int i=0;i<days-span-1;i++){
                int localMax=0;
                int localMin=Integer.MAX_VALUE;
                int localMaxIndex=i;
                int localMinIndex=i;                 
                for(int j=i;j<i+span;j++){  
                    if(localMax<values[j]){
                        localMax=values[j];
                        localMaxIndex=j;
                    }
                    if((localMin>values[j])&&(values[j]>0)){
                        localMin=values[j];
                        localMinIndex=j;
                    }
                }    
                if((localMaxIndex>i+span4)&&(localMaxIndex<i+span-1-span4)){
                    importantValues[localMaxIndex]=1;
                }
                if((localMinIndex>i+span4)&&(localMinIndex<i+span-1-span4)){
                    importantValues[localMinIndex]=1;
                }
            }            
        }       

        
       
        importantCount=0;
        for(int i=0;i<days;i++){
            importantCount+=importantValues[i];               
        } 
        importantIndex=importantCount;
        
        //
        completed=true;
        setStatus("同步完成时间 "+getCurrentTime());        
    } 
    
   
    
    protected void paint(Graphics g){
        super.paint(g);
        //image        
        if(completed){
            int dx=1;
            int dy=Line_HIGHT+(FONT_HEIGHT+1)/2+2;    
            int w=width-dx-2;
            int h=height-dy-Line_HIGHT-2-(FONT_HEIGHT+1)/2;

            g.setColor(0x00D4D0C8);
            g.setStrokeStyle(Graphics.SOLID);
            g.drawRect(dx,dy,w,h);
            g.setColor(0x00FF0000);
            int m=wdays;
            int k=1;
            if(m==0){                
                m=1;
                k=daysw+1;
            }            
            
            int offset=(days-1-daysk*k+k)%k;
            //System.out.println("days="+days+" w="+w+" m="+m+" k="+k+" offset="+offset);
            for(int i=offset;(i+1)*k+offset<days;i++){
                if(values[i*k]>=0){
                    g.drawLine(dx+i*m,dy+h-tvalues[i*k+offset]*h100,dx+(i+1)*m,dy+h-tvalues[(i+1)*k+offset]*h100);
                }
            }
            
            g.setColor(0x00000000);
            //g.drawString(""+values[maxIndex]/100,dx,dy+h-tvalues[maxIndex]*h/100-(FONT_HEIGHT+1)/2,Graphics.LEFT|Graphics.TOP);
            //g.drawString(""+values[minIndex]/100,dx,dy+h-tvalues[minIndex]*h/100-(FONT_HEIGHT+1)/2,Graphics.LEFT|Graphics.TOP);
                        
            importantIndex=(importantIndex%(importantCount+1)+importantCount+1)%(importantCount+1);
            
            int tmp=0;
            for(int i=0;i<days;i++){
                tmp+=importantValues[i];
                if(tmp==importantIndex){
                    g.drawString(""+values[i]/100,dx,dy+h-tvalues[i]*h100-(FONT_HEIGHT+1)/2,Graphics.LEFT|Graphics.TOP);
                    break;
                }
            }
            
            
            g.setColor(0x00D4D0C8);
            g.setStrokeStyle(Graphics.DOTTED);
            for(int i=0;i<days;i++){
                if(importantValues[i]==1){
                    g.drawLine(dx,dy+h-tvalues[i]*h100,dx+i*m,dy+h-tvalues[i]*h100);
                }
            }
        }
    }    
    
    private int importantIndex=0;
    protected void keyPressed(int keyCode) {
        super.keyPressed(keyCode);
        switch (getGameAction(keyCode)) {
        case LEFT:
        case UP:    
            importantIndex++;
            repaint();
            break;
        case RIGHT:
        case DOWN:
            importantIndex--;
            repaint();
            break;
        default:
            break;          
        }
        
    }    
}