package rssreader.view;
import rssreader.model.NewsFeed;
import rssreader.model.URL;
import rssreader.service.*;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Image;
import java.awt.Label;
import java.awt.Menu;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URLDecoder;
import java.nio.Buffer;
import java.util.HashMap;
import java.util.Map;

import org.jdom.*;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.JToolBar;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.table.DefaultTableModel;

import org.jdom.JDOMException;

public class FrameMain extends JFrame{
	public static Font font = new Font("宋体", Font.BOLD, 25);
	public static Font bigfont = new Font("宋体", Font.BOLD, 40);
	/**业务逻辑对象*/
	private Service service;
	/**菜单面板中的控件*/
	private JComboBox comboBox;//下拉框
	private JButton readButton;//读取按钮
	private JButton saveButton;//保存按钮
	private JButton moreButton;//打开网页按钮
	private JTextField newstitleText;//查询新闻标题输入框
	private JButton queryButton;//查询按钮
	private String uriaddress;//网页地址
	private JLabel statusLabel;//状态栏
	/**文件选择的文件项*/
	
	/**新闻标题面板的控件*/
	private JTable newsTitleTable;//新闻标题表格
	private JTextPane textPaneNewsDescripation;//新闻内容文本框
	
	
	//主面板构造器
	public FrameMain() {
		// TODO Auto-generated constructor stub
		//创建业务逻辑对象
		service=new Service(this);
		setTitle("RSS阅读器");
		//设置窗体大小
		setBounds(1000, 300, 1500, 1700);
		//添加主面板 
		JPanel contentePanel=getContentPanel();
		setContentPane(contentePanel);
		//添加菜单
		setJMenuBar(getJMenuBar());
	
		
		
	}
	//主面板
	private  JPanel getContentPanel(){
		JPanel panel=new JPanel(new BorderLayout());
	
		//面板上添加工具栏
		panel.add(getJToolBar(),BorderLayout.NORTH);
	
		panel.add(getCenterPanel(),BorderLayout.CENTER);
		
		
		panel.add(getStatusBar(),BorderLayout.SOUTH);
	
		return panel;
		
	}
	
	//面板组件
	private JSplitPane getCenterPanel(){
		JSplitPane splitPane=new JSplitPane(JSplitPane.VERTICAL_SPLIT);
		splitPane.setDividerLocation(650);//设置分割条位置
		
		JPanel panel=new JPanel(new BorderLayout());
		//添加功能
		panel.add(getQueryPanel(),BorderLayout.NORTH);
		//新闻列表
		panel.add(getTabelSollPanel(),BorderLayout.CENTER);
		
		//新闻内容
		
		splitPane.setLeftComponent(panel);
		splitPane.setRightComponent(getTextSolPanel());
		return splitPane;
	}
	
	
	
	
	//创建菜单
	public JMenuBar getJMenuBar(){
		//创建菜单条
		JMenuBar menuBar=new JMenuBar();
		
		//创建文件菜单
		JMenu fileMenu=new JMenu("文件");
		fileMenu.setMnemonic('F');//快捷键
		fileMenu.setFont(bigfont);
		//把菜单添加到菜单栏
		menuBar.add(fileMenu);
		//创建文件菜单项
	
		JMenuItem open=new JMenuItem("打开..");
		open.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent arg0) {
				// TODO Auto-generated method stub
				statusLabel.setText("读取文件");
				JFrame jfFrame=new JFrame("选择一个RSS文件");
				jfFrame.setVisible(true);
				jfFrame.setBounds(1400, 500, 600, 400);
				jfFrame.setLayout(null);
				jfFrame.add(getComboBox()).setBounds(150, 50, 300, 100);
				JButton read=new JButton("确定");
				read.setFont(bigfont);
				jfFrame.add(read).setBounds(50, 200, 200, 100);
				read.addActionListener(readListener);
				read.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						// TODO Auto-generated method stub
						jfFrame.dispose();
					}
				});
				JButton exit=new JButton("取消");
				exit.setFont(bigfont);
				jfFrame.add(exit).setBounds(300, 200, 200, 100);
				exit.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						// TODO Auto-generated method stub
						jfFrame.dispose();
					}
				});
			}
		});
		open.setFont(bigfont);
		JMenuItem save=new JMenuItem("保存");
		save.setFont(bigfont);
		save.addActionListener(saveListener);
		JMenuItem exit=new JMenuItem("退出");
		exit.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				System.exit(0);
				statusLabel.setText("退出");
			}
		});
		exit.setFont(bigfont);
		//添加菜单项到菜单
		fileMenu.add(open);
		fileMenu.add(new JSeparator());//设置分割线
		fileMenu.add(save);
		fileMenu.add(new JSeparator());//设置分割线
		fileMenu.add(exit);
		
		//创建查询菜单
		JMenu queryMenu=new JMenu("查询");
		queryMenu.setFont(bigfont);
		queryMenu.setMnemonic('Q');//快捷键
		menuBar.add(queryMenu);
		//创建查询菜单项
		JMenuItem queryTitle=new JMenuItem("通过标题查找");
		queryTitle.setFont(bigfont);
		JMenuItem queryAutor=new JMenuItem("通过作者查找");
		queryAutor.setFont(bigfont);
		queryAutor.setEnabled(false);
		queryMenu.add(queryAutor);
		queryMenu.add(queryTitle);
		//帮助菜单
		JMenu helpMenu=new JMenu("帮助");
		helpMenu.setFont(bigfont);
		helpMenu.setMnemonic('h');
		JMenuItem aboutAutor=new JMenuItem("关于作者");
		aboutAutor.setFont(bigfont);
		aboutAutor.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent arg0) {
				// TODO Auto-generated method stub
				 JFrame jFrame=new JFrame("关于作者");
				 jFrame.setVisible(true);
				 jFrame.setSize(800, 400);
				 jFrame.setLocationRelativeTo(null);
				 JLabel jLabel=new JLabel("<html><body>作者：北京交通大学 段学宇<br>日期：2017年10月29日</body></html>");
				 jLabel.setFont(bigfont);
				 jFrame.add(jLabel).setSize(600,200);
			}
		});
		helpMenu.add(aboutAutor);
		menuBar.add(helpMenu);
		return menuBar;
	}
	//创建工具栏
	private JToolBar getJToolBar(){
		
		JToolBar toolBar=new JToolBar();
		//添加工具栏组件
		
		toolBar.add(getSaveButton());//保存按钮
		toolBar.add(getQueryButton());//查询按钮
		toolBar.add(getmoreButton());//访问按钮
		toolBar.setFloatable(false);
		return toolBar;
		
		
		
		
		
		
		
		
	}
	//创建菜单面板
	private JPanel getQueryPanel(){
		JPanel menuPanel=new JPanel();
		
		
		menuPanel.add(new Label("查询标题")).setFont(bigfont);
		menuPanel.add(getNewstitleText());
		
		
		return menuPanel;
	}
	//创建表格面板
	private JScrollPane getTabelSollPanel(){
		JScrollPane tableSolPanel=new JScrollPane();
		tableSolPanel.setViewportView(getNewsTitleTable());
		tableSolPanel.setPreferredSize(new Dimension(1300, 650));
		
		return tableSolPanel;
		
	}
	//创建文本框面板
	private JScrollPane getTextSolPanel(){
		JScrollPane messageSolePanel=new JScrollPane();
		messageSolePanel.setViewportView(getTextPaneNewsDescription());
		messageSolePanel.setPreferredSize(new Dimension(1300, 650));
		return messageSolePanel;
	}
	/**控件初始化*/
	public JComboBox getComboBox(){
		if(comboBox==null){
			comboBox=new JComboBox();
			comboBox.setFont(bigfont);
			comboBox.addItem(new URL("腾讯-国际新闻","rss_newswj.xml"));
			comboBox.addItem(new URL("腾讯-国内新闻","rss_newsgn.xml"));
			comboBox.addItem(new URL("新浪-体育新闻","sports.xml"));
			comboBox.addItem(new URL("新浪-社会新闻","focus15.xml"));
			
		}
		return comboBox;
	}
	//读取按钮
	public JButton getReadButton(){
		if(readButton==null){
			readButton=new JButton("读取");
			readButton.setFont(bigfont);
			readButton.setToolTipText("读取文件");//按钮提示信息
			readButton.addActionListener(readListener);
			
		}
		return readButton;
	}
	//保存按钮
	public JButton getSaveButton(){
		if(saveButton ==null){
		
			ImageIcon icon=new ImageIcon("image/保存.png");
			//ImageIcon icon=new ImageIcon("timg.jpg");
			
			saveButton =new JButton(icon);

			saveButton.setToolTipText("保存文件");//按钮提示信息
			saveButton.addActionListener(saveListener);
			
			
		
			
			
			
		}
		return saveButton ;
	}
	//访问按钮
	public JButton getmoreButton(){
		if(moreButton ==null){
			ImageIcon icon=new ImageIcon("image/访问.png");
			moreButton =new JButton(icon);
			moreButton.setToolTipText("访问该新闻所在页面");//按钮提示信息
			moreButton.addActionListener(new ActionListener() {
				
				@Override
				public void actionPerformed(ActionEvent e) {
					// TODO Auto-generated method stub
					java.net.URI uri;
					try {
						statusLabel.setText("访问外部新闻");
						uri = new java.net.URI(uriaddress);
						  java.awt.Desktop.getDesktop().browse(uri);
					} catch (Exception e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
					
				}
			});
			
		}
		return moreButton ;
	}
	//查询按钮
	public JButton  getQueryButton(){
		if(queryButton ==null){
			ImageIcon icon=new ImageIcon("image/查询.png");
			queryButton =new JButton(icon);
			queryButton.addActionListener(new ActionListener() {
				
				@Override
				public void actionPerformed(ActionEvent e) {
					// TODO Auto-generated method stub
					statusLabel.setText("查询文件");
				}
			});
		
			
		}
		return queryButton;
	}
	//详细新闻显示框体
	public JTextField getNewstitleText(){
		if(newstitleText==null){
			newstitleText=new JTextField();
			newstitleText.setColumns(22);
			newstitleText.setFont(bigfont);
			
			
		}
		return newstitleText;
	}

	//新闻标题栏
	public JTable  getNewsTitleTable(){
		if(newsTitleTable==null){
			//创建新闻标题表格
			newsTitleTable=new JTable();
			//创建表格中的数据模型对象
			myTableModel defaultModel=new myTableModel(new Object [50][9],new String [] {"主题", "接受时间", "发布时间", "作者"});
		
			newsTitleTable.setModel(defaultModel);
			newsTitleTable.getTableHeader().setFont(bigfont);
			newsTitleTable.setFont(font);
			newsTitleTable.setRowHeight(50);
			//设置表格的行高
			newsTitleTable.setEnabled(true);
			
			newsTitleTable.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);//设置居中
			/**
			 * 标题表格监听器，创建新行事件
			 * */
			newsTitleTable.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
				
				@Override
				public void valueChanged(ListSelectionEvent arg0) {
					// TODO Auto-generated method stub
					//获得选中行的值
					int row=newsTitleTable.getSelectedRow();
					try {
					
						service.showMessage(row);
						uriaddress=service.geturiaddress();	//获得网址
						statusLabel.setText(service.getTitle());//状态栏
					} catch (Exception ex) {
						// TODO: handle exception
						//获得处理BadLocation异常信息
						showError("文档转换操作异常："+ex.getMessage());
					}
				}
			} );
		}
		return newsTitleTable;
	}
	protected void showError(String string) {
		// TODO Auto-generated method stub
		System.out.println(string);
	}

	public JTextPane getTextPaneNewsDescription(){
		if(textPaneNewsDescripation==null){
			//创建文本域
			textPaneNewsDescripation=new JTextPane();
			//不可编辑
			textPaneNewsDescripation.setEditable(false);
			textPaneNewsDescripation.setFont(bigfont);
			
		}
		return textPaneNewsDescripation;
	}
	private JPanel getStatusBar(){
		JPanel panel=new JPanel();
		panel.setLayout(new FlowLayout(FlowLayout.LEFT));
		panel.add(new Label("   "));
		statusLabel=new JLabel("北京交通大学软件学院");
		statusLabel.setFont(bigfont);
		panel.add(statusLabel);
		return panel;
	}
	ActionListener readListener=new ActionListener() {
		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			
			/**目标文件*/
			String inFile;
			/**显示错误信息*/
			String errorInfo="";
			//网址字符串
			String address="";
			//获得下拉框选中项
			Object o=comboBox.getSelectedItem();
			//获得工程目录
			String dir=System.getProperty("user.dir");
			//获得下拉框选中项的文件名，赋值给网址字符串
			address=((URL)o).getAddress();
			//获得解析文件完整路径
			inFile=dir+"\\NewfeedFiles\\"+address;
						  
			try{
				//转编路径为UTF-8
				inFile=URLDecoder.decode(inFile, "utf-8");
			
				service.fileDo(inFile);
			
			}catch(IOException ioe){
				//获得处理IO异常信息
				errorInfo="系统找不到指定文件";
			}catch(JDOMException jde){
				errorInfo="解析文件异常";
				jde.printStackTrace();
			}finally{
				showError(errorInfo);
			}
			
		}
			
			
	};

	ActionListener saveListener=new ActionListener() {
		
		@Override
		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			statusLabel.setText("保存文件");
			JFileChooser chooser = new JFileChooser();
			chooser.setFileFilter(new FileNameExtensionFilter("文本文件(.txt)", "txt"));
			String path=null;
			JPanel parent = new JPanel();
			int returnVal = chooser.showOpenDialog(parent);
			if (returnVal == JFileChooser.APPROVE_OPTION) {
			path=chooser.getSelectedFile().getPath();
			}
			String filename=chooser.getSelectedFile().toString();
			
			
			
			try {
				
				String text=null;
				text=service.getPassage();
				 if(text!=null){
					 File file=new File(filename+".txt");
					FileWriter out = new FileWriter(file,true);
					 out.write(service.getPassage());
					 System.out.println("保存成功，路径为"+filename+".txt"); 
					 out.close();
					 
					 JFrame jFrame=new JFrame("保存成功");
					 jFrame.setVisible(true);
					 jFrame.setSize(600, 400);
					 jFrame.setLocationRelativeTo(null);
					 JLabel jLabel=new JLabel("成功保存该内容！");
					 jLabel.setFont(bigfont);
					 jFrame.add(jLabel).setSize(400,200);
				 }
				 else{
					 System.out.println("保存失败");
					 JFrame jFrame=new JFrame("保存失败");
					 jFrame.setVisible(true);
					 jFrame.setSize(800, 400);
					 jFrame.setLocationRelativeTo(null);
					 JLabel jLabel=new JLabel("请在列表中选择一个要保存的内容!");
					 jLabel.setFont(bigfont);
					 jFrame.add(jLabel).setSize(600,200);
					 
					 
				 }
				 
			     
			    
				 
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
		
	
				
				
				
				
				
				
			
		}
	};
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
}