/* Demo Note:  This demo uses a FileProgress class that handles the UI for displaying the file name and percent complete.
The FileProgress class is not part of SWFUpload.
*/


/* **********************
   Event Handlers
   These are my custom event handlers to make my
   web application behave the way I went when SWFUpload
   completes different tasks.  These aren't part of the SWFUpload
   package.  They are part of my application.  Without these none
   of the actions SWFUpload makes will show up in my application.
   ********************** */
function fileQueued(file) {
	try {
	   //檢查文件是否已添加
	   for(var i=0;i<file.index;i++)
	   {
	      var file_i = this.getFile(i);//alert(file_i.modificationdate==file.modificationdate)
	      if(file_i.filestatus !=SWFUpload.FILE_STATUS.CANCELLED && file_i.name==file.name && file_i.size==file.size && file_i.creationdate.getTime()==file.creationdate.getTime() && file_i.modificationdate.getTime()==file.modificationdate.getTime())
	      {
	         alert("文件 "+file.name+" 已添加");
	         this.cancelUpload(file.id);
	         return;
	      }
	   }
	   
	   //如果OA設置不允許上傳某些類型文件的時候，進行檢查
	   var fileType = file.type.toLowerCase().substr(1);
	   if(oa_upload_limit == 1 && (oa_limit_type.indexOf(fileType+",")==0 || oa_limit_type.indexOf(","+fileType+",")>0))
	   {
	      alert("禁止上傳 "+fileType+" 類型文件");
	      this.cancelUpload(file.id);
	      return;
	   }
	   
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setStatus("等待上傳...");//pending...
		progress.toggleCancel(true, this);
	} catch (ex) {
		this.debug(ex);
	}

}

function fileQueueError(file, errorCode, message) {
	try {
		if (errorCode === SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED) {
			alert("上傳文件數量超過限制\n" + (message === 0 ? "" : "您選擇了" + message + "個文件"));
			return;
		}

		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setError();
		progress.toggleCancel(false);

		switch (errorCode) {
		case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
			progress.setStatus("文件大小("+Math.ceil(file.size/1024/1024)+" MB)超過限制("+this.settings['file_size_limit']+")");
			this.debug("Error Code: File too big, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
			progress.setStatus("不能上傳0字節文件");
			this.debug("Error Code: Zero byte file, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
			progress.setStatus("無效的文件類型");
			this.debug("Error Code: Invalid File Type, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		default:
			if (file !== null) {
				progress.setStatus("未知錯誤：" + errorCode);
			}
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		}
	} catch (ex) {
        this.debug(ex);
    }
}

function fileDialogComplete(numFilesSelected, numFilesQueued) {
	try {
		if (numFilesSelected > 0) {
			document.getElementById(this.customSettings.uploadArea).style.display='block';
		   if (this.getStats().files_queued > 0) {
			   document.getElementById(this.customSettings.startButtonId).disabled = false;
			   document.getElementById(this.customSettings.cancelButtonId).disabled = false;
			}
		}
		window.scrollTo(0,document.getElementById(this.customSettings.uploadArea).offsetHeight)
		
		/* I want auto start the upload and I can do that here */
		//this.startUpload();
	} catch (ex)  {
        this.debug(ex);
	}
}

function uploadStart(file) {
	try {
		/* I don't want to do any file validation or anything,  I'll just update the UI and
		return true to indicate that the upload should start.
		It's important to update the UI here because in Linux no uploadProgress events are called. The best
		we can do is say we are uploading.
		 */
		document.getElementById(this.customSettings.startButtonId).disabled = true;
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setStatus("正在上傳...");
		progress.toggleCancel(true, this);
	}
	catch (ex) {
	   this.debug(ex);
	}
	
	return true;
}

function uploadProgress(file, bytesLoaded, bytesTotal) {
	try {
		var percent = Math.ceil((bytesLoaded / bytesTotal) * 100);

		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setProgress(percent);
		progress.setStatus("正在上傳... "+percent+"%");
	} catch (ex) {
		this.debug(ex);
	}
}

function uploadSuccess(file, serverData) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.toggleCancel(false);
		if(serverData.substr(0,5)=="-ERR ")
		{
		   progress.setError();
		   progress.setStatus("上傳失敗：" + serverData.substr(5));
		   
		   var stats=this.getStats();
		   stats.successful_uploads--;
		   stats.upload_errors++;
		   this.setStats(stats);
		}
		else
		{
		   progress.setComplete();
		   progress.setStatus("上傳完成。");
		}

	} catch (ex) {
		this.debug(ex);
	}
}

function uploadError(file, errorCode, message) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setError();
		progress.toggleCancel(false);

		switch (errorCode) {
		case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:
			progress.setStatus("HTTP錯誤：" + message);
			this.debug("Error Code: HTTP Error, File name: " + file.name + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.UPLOAD_FAILED:
			progress.setStatus("上傳失敗。");
			this.debug("Error Code: Upload Failed, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.IO_ERROR:
			progress.setStatus("服務期(IO)錯誤");
			this.debug("Error Code: IO Error, File name: " + file.name + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.SECURITY_ERROR:
			progress.setStatus("安全錯誤");
			this.debug("Error Code: Security Error, File name: " + file.name + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:
			progress.setStatus("達到上傳限制");
			this.debug("Error Code: Upload Limit Exceeded, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.FILE_VALIDATION_FAILED:
			progress.setStatus("無法驗證，跳過上傳。");
			this.debug("Error Code: File Validation Failed, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
			// If there aren't any files left (they were all cancelled) disable the cancel button
			if (this.getStats().files_queued === 0) {
				document.getElementById(this.customSettings.startButtonId).disabled = true;
				document.getElementById(this.customSettings.cancelButtonId).disabled = true;
			}
			progress.setStatus("已取消");
			progress.setCancelled();
			break;
		case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
			progress.setStatus("已停止");
			break;
		default:
			progress.setStatus("未知錯誤：" + errorCode);
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			break;
		}
	} catch (ex) {
        this.debug(ex);
    }
}

function uploadComplete(file) {
	if (this.getStats().files_queued === 0) {
		document.getElementById(this.customSettings.startButtonId).disabled = true;
		document.getElementById(this.customSettings.cancelButtonId).disabled = true;
	}
}

// This event comes from the Queue Plugin
function queueComplete(numFilesUploaded) {
	var status = document.getElementById("divStatus");
	var stats = this.getStats();
	status.innerHTML = stats.successful_uploads + " 個文件上傳成功，" + stats.upload_errors + " 個文件上傳失敗，" + stats.upload_cancelled + " 個文件取消。";
}