/**
 * upload plugin
 * 
 */
var file_upload_limit = 6;
$.fn.extend({
	editorupload : function(options) {
		var progressDispArea = options['progressDispArea']==undefined ? 'progressDispArea' : options['progressDispArea'];
	//	writeProgressHtml(progressDispArea);
		initSwfUpload($(this).attr('id'), options);
	}
});

var hasProgreeHtml = 0;

// 创建进度条的html
function writeProgressHtml(progressDispArea) {
	if (hasProgreeHtml == 0) // 一个页面只创建一次
	{
		$('#' + progressDispArea)
				.append(
						'<div id="progressDialog" style="display: none;width:370px;height:80px !important;"><div style="padding:10px 20px;"><span id="curUploadStatus">图片上传中……请稍等</span><div id="progress"></div></div></div>');
		hasProgreeHtml = 1;
	}
}

function setUploadStatus(uploadNum, totalUploadNum) {
	$('#uploadNum').html(uploadNum);
	$('#totalUploadNum').html(totalUploadNum);
}

// 初始化swf
function initSwfUpload(btnId, options) {
	// 上传成功的回调函数
	var uploadSuccessCallBack = null;
	if (options.uploadSuccessed != undefined) {
		uploadSuccessCallBack = options.uploadSuccessed;
	}
	// 上传的key
	var uploadKeyValue = '';
	if (options.uploadKey != undefined) {
		uploadKeyValue = options.uploadKey;
	}

	// 上传之前可以做的操作参数
	var preUploadCallBack = null;
	if (options.preupload != undefined) {
		preUploadCallBack = options.preupload;
	}
	
	var uploadCompletedCallBack = null;
	if(options.uploadCompletedCallBack != undefined){
		uploadCompletedCallBack = options.uploadCompletedCallBack;
	}
	//设置上传进度
	var setUploadProgress = null;
	if(options.setUploadProgress != undefined){
		setUploadProgress = options.setUploadProgress;
	}
	
	var startUploadCallBack = null;
	if(options.startUpload != undefined){
		startUploadCallBack = options.startUpload;
	}

	// 弹出层ID
	var progressDivId = 'progressDialog';
	// 进度条ID
	var progressTargetId = 'progress';

	// 共有多少张需要上传
	var totalUploadNum = 0;

	// 当前已经上传的张数
	var curUploadedNum = 0;

	this.options = options;

	var numTest = 0;

	// 设置默认值函数
	function setDefaultValue(optionName, optionValue) {
		this.options[optionName] = options[optionName] == undefined ? optionValue
				: options[optionName];
	}

	setDefaultValue('flash_url', "http://static.yohobuy.com/admin/js/swfupload/swfupload.swf");
	setDefaultValue('upload_url', "http://upload.yohobuy.com");
	setDefaultValue('file_post_name', "Filedata");
	setDefaultValue('file_size_limit', "2 MB");
	setDefaultValue('file_types' , "*.*");
	setDefaultValue('file_types_description', "All Files");
	setDefaultValue('file_upload_limit', 100);
	setDefaultValue('file_queue_limit', 0);
	setDefaultValue('button_image_url', "http://static.yohobuy.com/admin/images/btn_swfupload.png");
	setDefaultValue('button_width', "60");
	setDefaultValue('button_height', "25");
	setDefaultValue('button_text', '<span class="but2">上传</span>');
	setDefaultValue('button_text_style', ".but2{color:#ffffff;}");
	setDefaultValue('button_text_left_padding', 15);
	setDefaultValue('button_text_top_padding', 2);	
	setDefaultValue('button_window_mode','TRANSPARENT');
	setDefaultValue('button_cursor', '-2');

	var settings = {
		flash_url : this.options.flash_url,
		upload_url : this.options.upload_url,
		file_post_name : this.options.file_post_name,
		// post_params: {"PHPSESSID" : "<?php echo session_id(); ?>"},
		file_size_limit : this.options.file_size_limit,
		file_types : this.options.file_types,
		file_types_description : this.options.file_types_description,
		file_upload_limit : this.options.file_upload_limit,
		file_queue_limit : this.options.file_queue_limit,
		prevent_swf_caching : false,
        preserve_relative_urls : false,
		custom_settings : {

		},
		debug : false,

		// Button settings
		button_image_url : this.options.button_image_url,
		button_width : this.options.button_width,
		button_height : this.options.button_height,
		button_placeholder_id : btnId,
		button_text : this.options.button_text,
		button_text_style : this.options.button_text_style,
		button_text_left_padding : this.options.button_text_left_padding,
		button_text_top_padding : this.options.button_text_top_padding,
		button_window_mode : this.options.button_window_mode,
		button_cursor : this.options.button_cursor,

		// The event handler functions are defined in handlers.js
		file_dialog_start_handler : fileDialogStart,
		file_queued_handler : fileQueued,
		file_queue_error_handler : fileQueueError,
		file_dialog_complete_handler : fileDialogComplete,
		upload_start_handler : uploadStart,
		upload_progress_handler : uploadProgress,
		upload_error_handler : uploadError,
		upload_success_handler : uploadSuccess,
		upload_complete_handler : uploadComplete,
		queue_complete_handler : queueComplete
	};

	var swfu = new SWFUpload(settings);

	function fileQueued(file) {
		try {

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

	}

	function fileQueueError(file, errorCode, message) {
		try {
			if (errorCode === SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED) {
				alert("您尝试上传太多文件.\n"
						+ (message === 0 ? "您已达到上传限制." : "您最多还可以 "
								+ (message > 1 ? "上传 " + message + "文件."
										: "一个文件.")));
				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("File is too big.");
				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("Cannot upload Zero Byte files.");
				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("Invalid File Type.");
				this.debug("Error Code: Invalid File Type, File name: "
						+ file.name + ", File size: " + file.size
						+ ", Message: " + message);
				break;
			default:
				if (file !== null) {
					// progress.setStatus("Unhandled Error");
				}
				this.debug("Error Code: " + errorCode + ", File name: "
						+ file.name + ", File size: " + file.size
						+ ", Message: " + message);
				break;
			}
		} catch (ex) {
			this.debug(ex);
		}
	}

	function fileDialogStart() {
		if (preUploadCallBack != null) {
			preUploadCallBack();
		}
	}

	// 选择文件完成
	function fileDialogComplete(numFilesSelected, numFilesQueued) {
		try {

			if (numFilesSelected > 0) {
				// document.getElementById(this.customSettings.cancelButtonId).disabled
				// = false;
				totalUploadNum = numFilesSelected;
				curUploadedNum = 1;
				setUploadStatus(curUploadedNum, totalUploadNum);

				this.startUpload();
			}

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

	// 开始上传
	function uploadStart(file) {
		this.addPostParam('_key', uploadKeyValue);
		if(startUploadCallBack != null){
			startUploadCallBack();
		}
		$('#' + progressDivId).show();
		
	}

	// 上传进度
	function uploadProgress(file, bytesLoaded, bytesTotal) {
		// $('#uploadData').html(bytesLoaded + "/" + bytesTotal);
		// $('#uploadData').html( $('#uploadData').html() + ' - ' + bytesLoaded
		// + '+' + ',' + bytesTotal );
		var percent = Math.ceil((bytesLoaded / bytesTotal) * 100);
		if(setUploadProgress != null){
			setUploadProgress(percent);
		}
	}

	// 上传成功
	function uploadSuccess(file, serverData) {
		curUploadedNum++;
		setUploadStatus(curUploadedNum, totalUploadNum);
		if (uploadSuccessCallBack != null) {
			uploadSuccessCallBack(serverData);
		}
	}

	// 上传出错
	function uploadError(file, errorCode, message) {
		try {
			if (errorCode === SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED) {
				alert("您尝试上传太多文件.\n"
						+ (message === 0 ? "您已达到上传限制." : "您最多还可以 "
								+ (message > 1 ? "上传 " + message + "文件."
										: "一个文件.")));
				return;
			}
			switch (errorCode) {
			case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
				alert("Error Code: 文件太大。 文件名为: " + file.name + ", 大小为: "
						+ file.size + ", Message: " + message);
				break;
			case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:

				alert("Error Code: 文件为0, 文件名为: " + file.name + ", 大小为: "
						+ file.size + ", Message: " + message);
				break;
			case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
				alert("Error Code: 文件类型不合要求, 文件名为: " + file.name + ", 大小为: "
						+ file.size + ", Message: " + message);
				break;
			default:
				if (file !== null) {

				}
				alert("上传出错" + "Error Code: " + errorCode + ", File name: "
						+ file.name + ", File size: " + file.size
						+ ", Message: " + message);
				break;
			}
		} catch (ex) {
			this.debug(ex);
		}
	}

	// 上传完成
	function uploadComplete(file) {
		$('#' + progressDivId).hide();		
	}

	// This event comes from the Queue Plugin
	function queueComplete(numFilesUploaded) {
		if(uploadCompletedCallBack != null){
			uploadCompletedCallBack();
		}
	}
}