package book.upload;

public class UploadListener implements OutputStreamListener {
	// 保存狀態的內部類對象
	private FileUploadStats fileUploadStats = new FileUploadStats();
	// 構造方法
	public UploadListener(long totalSize) {
		fileUploadStats.setTotalSize(totalSize);
	}
	public void start() {
		// 設置當前狀態為開始
		fileUploadStats.setCurrentStatus("start");
	}
	public void bytesRead(int byteCount) {
		// 將已讀取的數據保存到狀態對象中
		fileUploadStats.incrementBytesRead(byteCount);
		// 設置當前的狀態為讀取過程中
		fileUploadStats.setCurrentStatus("reading");
	}
	public void error(String s) {
		// 設置當前狀態為出錯
		fileUploadStats.setCurrentStatus("error");
	}
	public void done() {
		// 設置當前已讀取數據等于總數據大小
		fileUploadStats.setBytesRead(fileUploadStats.getTotalSize());
		// 設置當前狀態為完成
		fileUploadStats.setCurrentStatus("done");
	}
	public FileUploadStats getFileUploadStats() {
		// 返回當前狀態對象
		return fileUploadStats;
	}
	// 保存狀態類
	public static class FileUploadStats {
		private long totalSize = 0;// 總數據的大小
		private long bytesRead = 0;// 已讀數據大小
		private long startTime = System.currentTimeMillis();// 開始讀取的時間
		private String currentStatus = "none";// 默認的狀態
		public long getTotalSize()// 屬性totalSize的get方法
		{
			return totalSize;
		}
		public void setTotalSize(long totalSize) {
			this.totalSize = totalSize;
		}
		public long getBytesRead()// 屬性bytesRead的get方法
		{
			return bytesRead;
		}
		public long getElapsedTimeInSeconds()// 獲得已經上傳得時間
		{
			return (System.currentTimeMillis() - startTime) / 1000;
		}
		public String getCurrentStatus()// 屬性currentStatus的get方法
		{
			return currentStatus;
		}
		public void setCurrentStatus(String currentStatus) {
			this.currentStatus = currentStatus;
		}
		public void setBytesRead(long bytesRead) {
			this.bytesRead = bytesRead;
		}
		public void incrementBytesRead(int byteCount) {
			this.bytesRead += byteCount;
		}
	}
}