package mybook.book;

import java.awt.*;

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Rectangle;
import java.awt.Font;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import mydbc.dbc.DBC;
import java.sql.ResultSet;
import java.sql.*;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2008</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class FrReturn extends JFrame {
    public FrReturn() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        getContentPane().setLayout(null);
        setSize(new Dimension(295, 263));
        this.setTitle("還書登記");
        lblBid.setText("所借書編號：");
        lblBid.setBounds(new Rectangle(46, 91, 83, 15));
        lblReturn.setFont(new java.awt.Font("宋體", Font.BOLD, 20));
        lblReturn.setText("還書登記");
        lblReturn.setBounds(new Rectangle(90, 21, 114, 49));
        btnSubmit.setBounds(new Rectangle(51, 196, 81, 23));
        btnSubmit.setText("提交");
        btnSubmit.addActionListener(new FrReturn_btnSubmit_actionAdapter(this));
        btnCancel.setBounds(new Rectangle(159, 196, 81, 23));
        btnCancel.setText("取消");
        btnCancel.addActionListener(new FrReturn_jButton2_actionAdapter(this));
        this.getContentPane().add(lblBid);
        txtUid.setBounds(new Rectangle(137, 136, 76, 20));
        txtBid.setBounds(new Rectangle(137, 87, 76, 20));
        this.getContentPane().add(txtBid);
        this.getContentPane().add(txtUid);
        this.getContentPane().add(lblUid);
        this.getContentPane().add(lblReturn);
        this.getContentPane().add(btnSubmit);
        this.getContentPane().add(btnCancel);
        lblUid.setText("借書人編號：");
        lblUid.setBounds(new Rectangle(46, 138, 86, 15));
    }

    JLabel lblBid = new JLabel();
    JLabel lblUid = new JLabel();
    JTextField txtBid = new JTextField();
    JTextField txtUid = new JTextField();
    JLabel lblReturn = new JLabel();
    JButton btnSubmit = new JButton();
    JButton btnCancel = new JButton();
    public void jButton2_actionPerformed(ActionEvent e) {
        this.setVisible(false);
    }

    public void btnSubmit_actionPerformed(ActionEvent e) {
            if (txtUid.getText().equals("") || txtBid.getText().equals("")) {
                javax.swing.JOptionPane.showMessageDialog(this, "各欄位不能為空！請重新輸入。");
                return;
            } else {
                try {
                    Integer.parseInt(txtUid.getText());
                    Integer.parseInt(txtBid.getText());
                } catch (NumberFormatException ex) {
                    javax.swing.JOptionPane.showMessageDialog(this, "編號只能為數字！請重新輸入。");
                    return;
                }
                DBC dbc = DBC.getInstance();
                String state = "";
                ResultSet rs = dbc.executeQuery("SELECT * FROM OutBooks WHERE Obid = "+Integer.parseInt(txtBid.getText())+"AND Ouid="+Integer.parseInt(txtUid.getText()));
                try {
                    rs.next();
                    state = rs.getString("Obstate");
                } catch (SQLException ex1) {
                    javax.swing.JOptionPane.showMessageDialog(this, "該讀者未租借過此書！");
                    return;
                }
                if(state.equals("是")){
                    javax.swing.JOptionPane.showMessageDialog(this, "還書失敗，該讀者已經還過此書！");
                    return;
                }else{
                    if (dbc.executeUpdate(
                            "UPDATE OutBooks SET Obstate='是',SET Obkeep='否' WHERE Obid = " +
                            Integer.parseInt(txtBid.getText())) &&
                        dbc.
                        executeUpdate(
                                "UPDATE Users SET Uyue=Uyue+(SELECT Bprice FROM Books WHERE Bid = " +
                                Integer.parseInt(txtBid.getText()) +
                                ") WHERE Uid = " +
                                Integer.parseInt(txtUid.getText())) &&
                        dbc.
                        executeUpdate(
                            "UPDATE Books SET Bsum=Bsum+1 WHERE Bid =" +
                            Integer.parseInt(txtBid.getText()))) {
                        javax.swing.JOptionPane.showMessageDialog(this, "還書成功！");

                    } else {
                        javax.swing.JOptionPane.showMessageDialog(this,
                                "還書失敗！請重試。");
                    }
                }
            }
    }
}


class FrReturn_btnSubmit_actionAdapter implements ActionListener {
    private FrReturn adaptee;
    FrReturn_btnSubmit_actionAdapter(FrReturn adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btnSubmit_actionPerformed(e);
    }
}


class FrReturn_jButton2_actionAdapter implements ActionListener {
    private FrReturn adaptee;
    FrReturn_jButton2_actionAdapter(FrReturn adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jButton2_actionPerformed(e);
    }
}