package iniset;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

import iniset.finals.SetDatas;

/**
 * 各種設置類,通過從文件當中獲取設置信息,以單子模式實現
 * 
 * @author B.Lee
 *
 */
public class PropertySet {
  /** 是否有音效 */
  private int sound;

  /** 是否有背景音樂 */
  private int music;

  /** 人與人下還是人與電腦下 */
  private int model;

  /** 黑棋先下還是白棋先下 */
  private int first;

  /** 是否允許悔棋 */
  private int regret;
  /**
   * 本類的一個實例,用來實現單子模式
   */
  private static PropertySet propertySet = null;

  /**
   * 構造函數,初始化各屬性值
   *
   */
  private PropertySet() {
    loadPropertySet();
  }
  
  public static PropertySet getPropertySet() {
    if(propertySet == null) {
      propertySet = new PropertySet();
      return propertySet;
    } else {
      return propertySet;
    }
  }
  
  /**
   * 從文件當中讀取上一次保存的設置信息并使之生效 如果文件不存在則將所有的信息置為默認值
   * 
   * @return 無
   */
  private void loadPropertySet() {
    Properties properties = null;
    FileInputStream read = null;

    String soundTem = "";
    String musicTem = "";
    String modelTem = "";
    String firstTem = "";
    String regretTem = "";

    // 以下代碼從文件當中獲取信息
    try {
      read = new FileInputStream(new File("five.property"));
      properties = new Properties();
      properties.load(read);

      // 從文件當中讀取信息,如果文件當中某個key被刪除則該key置為默認值
      soundTem = properties.getProperty("sound", Integer
          .toString(SetDatas.SOUND_ON));
      musicTem = properties.getProperty("music", Integer
          .toString(SetDatas.MUSIC_ON));
      modelTem = properties.getProperty("model", Integer
          .toString(SetDatas.PEOPLE_VS_COMPUTER));
      firstTem = properties.getProperty("first", Integer
          .toString(SetDatas.BLACK_FIRST));
      regretTem = properties.getProperty("regret", Integer
          .toString(SetDatas.REGRET_ABLE));
    } catch (IOException ex) {
      // 如果文件不存在則置為默認值
      soundTem = Integer.toString(SetDatas.SOUND_ON);
      musicTem = Integer.toString(SetDatas.MUSIC_ON);
      modelTem = Integer.toString(SetDatas.PEOPLE_VS_COMPUTER);
      firstTem = Integer.toString(SetDatas.BLACK_FIRST);
      regretTem = Integer.toString(SetDatas.REGRET_ABLE);
    }

    // 以下代碼將從文件當中獲取的信息轉化為程序能夠識別的值
    try {
      this.setSound(Integer.parseInt(soundTem));
      this.setMusic(Integer.parseInt(musicTem));
      this.setModel(Integer.parseInt(modelTem));
      this.setFirst(Integer.parseInt(firstTem));
      this.setRegret(Integer.parseInt(regretTem));
    } catch (NumberFormatException ex) {// 如果文件當中的數值被人為改變可能會拋出此異常
      this.setSound(SetDatas.SOUND_ON);
      this.setMusic(SetDatas.MUSIC_ON);
      this.setModel(SetDatas.PEOPLE_VS_COMPUTER);
      this.setFirst(SetDatas.BLACK_FIRST);
      this.setRegret(SetDatas.REGRET_ABLE);
    }
  }

  /**
   * 將設置信息保存到文件當中
   * 
   * @return true 保存成功 
   *          false 保存失敗
   */
  public boolean savePropertySet() {
    boolean flag = false;
    Properties properties = null;
    FileOutputStream save = null;
    try {
      save = new FileOutputStream(new File("five.property"));
      properties = new Properties();
      properties.setProperty("sound", Integer.toString(sound));
      properties.setProperty("music", Integer.toString(music));
      properties.setProperty("model", Integer.toString(model));
      properties.setProperty("first", Integer.toString(first));
      properties.setProperty("regret", Integer.toString(regret));

      properties.store(save, "The last setting:\r\nAuthor B.Lee");
      flag = true;
    } catch (IOException ex) {
      flag = false;// 發生錯誤,保存屬性失敗
    }
    return flag;
  }

  public int getFirst() {
    return first;
  }

  public void setFirst(int first) {
    if (first != 0 && first != 1) {
      first = 1;
    } else {
      this.first = first;
    }
  }

  public int getModel() {
    return model;
  }

  public void setModel(int model) {
    if (model != 0 && model != 1) {
      this.model = 1;
    } else {
      this.model = model;
    }
  }

  public int getMusic() {
    return music;
  }

  public void setMusic(int music) {
    if (music != 0 && music != 1) {
      this.music = 1;
    } else {
      this.music = music;
    }
  }

  public int getRegret() {
    return regret;
  }

  public void setRegret(int regret) {
    if (regret != 0 && regret != 1) {
      this.regret = 1;
    } else {
      this.regret = regret;
    }
  }

  public int getSound() {
    return sound;
  }

  public void setSound(int sound) {
    if (sound != 0 && sound != 1) {
      this.sound = 1;
    } else {
      this.sound = sound;
    }
  }
  
//  //test
//  public static void main(String[] args) {
//    PropertySet ss = new PropertySet();
//    ss.savePropertySet();
//  }

}