/// jQuery plugin to add support for SwfUpload
/// (c) 2008 Steven Sanderson

(function($) {
    $.fn.makeAsyncUploader = function(options) {
        return this.each(function() {
            // Put in place a new container with a unique ID
            var id = $(this).attr("id");

            var container2 = $(".asyncUploaderResponse");
            container2.append($("<div class='ProgressBar' style='width:30px;height:30px'> <div>&nbsp;</div> </div>"));
            container2.append($("<span id='" + id + "_completedMessage'/>"));
            container2.append($("<span id='" + id + "_uploading'>Uploading... <input type='button' value='Cancel'/></span>"));
            container2.append($("<input type='hidden' name='" + id + "_filename'/>"));
            container2.append($("<input type='hidden' name='" + id + "_guid'/>"));
            $("div.ProgressBar", container2).hide();
            $("span[id$=_uploading]", container2).hide();

            var container = $("<span class='asyncUploader'/>");
            container.append($("<span id='" + id + "_swf'/>"));
            //container.append($("<div class='ProgressBar'> <div>&nbsp;</div> </div>"));
            //container.append($("<span id='" + id + "_completedMessage'/>"));
            //container.append($("<span id='" + id + "_uploading'>Uploading... <input type='button' value='Cancel'/></span>"));
            //container.append($("<input type='hidden' name='" + id + "_filename'/>"));
            //container.append($("<input type='hidden' name='" + id + "_guid'/>"));
            $(this).before(container).remove();
            //$("div.ProgressBar", container).hide();
            //$("span[id$=_uploading]", container).hide();

            // Instantiate the uploader SWF
            var swfu;
            var width = 34, height = 34;
            if (options) {
                width = options.width || width;
                height = options.height || height;
            }
            var defaults = {
                flash_url: "swfupload.swf",
                upload_url: "/Home/AsyncUpload",
                file_size_limit: "3 MB",
                file_types: "*.*",
                file_types_description: "All Files",
                debug: false,

                button_image_url: "blankButton.png",
                button_width: width,
                button_height: height,
                button_placeholder_id: id + "_swf",
                button_text: "<font face='Arial' size='13pt'></span>",
                button_text_left_padding: (width - 80) / 2,
                button_text_top_padding: 1,

                // Called when the user chooses a new file from the file browser prompt (begins the upload)
                file_queued_handler: function(file) { swfu.startUpload(); },

                // Called when a file doesn't even begin to upload, because of some error
                file_queue_error_handler: function(file, code, msg) { alert("Sorry, your file wasn't uploaded: " + msg); },

                // Called when an error occurs during upload
                upload_error_handler: function(file, code, msg) { alert("Sorry, your file wasn't uploaded: " + msg); },

                // Called when upload is beginning (switches controls to uploading state)
                upload_start_handler: function() {
                    //swfu.setButtonDimensions(0, height);
                    /*$("input[name$=_filename]", container).val("");
                    $("div.ProgressBar div", container).css("width", "0px");
                    $("div.ProgressBar", container).show();
                    $("span[id$=_uploading]", container).show();
                    $("span[id$=_completedMessage]", container).html("").hide();*/

                    $("input[name$=_filename]", container2).val("");
                    $("div.ProgressBar div", container2).css("width", "0px");
                    $("div.ProgressBar", container2).show();
                    $("span[id$=_uploading]", container2).show();
                    $("span[id$=_completedMessage]", container2).html("").hide();
                    $("#entry_uploaded_image").hide();

                    if (options.disableDuringUpload)
                        $(options.disableDuringUpload).attr("disabled", "disabled");

                    $(".step2").css("display","table-row");
                },

                // Called when upload completed successfully (puts success details into hidden fields)
                upload_success_handler: function(file, response) {
                    var response_json;
                    var json_encode_success = false;
                    try
                    {
                    	response_json = eval("(" + response + ")");
                    	json_encode_success = true;
                    }
                    catch(e)
                    {
                    	response_json = response;
                    	json_encode_success = false;
                    }
                    //alert(response);
                    
                    if (json_encode_success)
                    {
	                    $("input[name$=_filename]", container2).val(file.name);
	                    $("input[id$=entry_uploaded_image_id]").val(response_json.guid);
	                    $("span[id$=entry_uploaded_image]").html(
	                    	"<img src='"+response_json.small_src+"' width='30' height='30' style='float:left'/>" +
                            "<div style='float:left;padding:7px;font-size:12px;font-weight:bold;color:#444'>Uploaded " + file.name +"</div>"                              
	                    );
                        $("#entry_uploaded_image").show();

	                    /*$("span[id$=_completedMessage]", container).html(
	                    		"Uploaded <b>{0}</b> ({1} KB)"
	                                .replace("{0}", file.name)
	                                .replace("{1}", Math.round(file.size / 1024))
	                            );*/
                    }
                    else
                    {
                    	$("input[name$=_filename]", container2).val(file.name);
	                    //$("input[name$=_guid]", container).val();
	                    /*$("span[id$=_completedMessage]", container).html(
	                    		"<img src='"+response_json.small_src+"'/>"
	                    		+"Uploaded <b>{0}</b> ({1} KB)"
	                                .replace("{0}", file.name)
	                                .replace("{1}", Math.round(file.size / 1024))
	                            );*/
                    }
                    
                },

                // Called when upload is finished (either success or failure - reverts controls to non-uploading state)
                upload_complete_handler: function() {
                    var clearup = function() {
                        $("div.ProgressBar", container2).hide();
                        $("span[id$=_completedMessage]", container2).show();
                        $("span[id$=_uploading]", container2).hide();
                        swfu.setButtonDimensions(width, height);
                    };
                    if ($("input[name$=_filename]", container2).val() != "") // Success
                        $("div.ProgressBar div", container2).animate({ width: "100%" }, { duration: "fast", queue: false, complete: clearup });
                    else // Fail
                        clearup();

                    if (options.disableDuringUpload)
                        $(options.disableDuringUpload).removeAttr("disabled");
                },

                // Called periodically during upload (moves the progess bar along)
                upload_progress_handler: function(file, bytes, total) {
                    var percent = 100 * bytes / total;
                    $("div.ProgressBar div", container2).animate({ width: percent + "%" }, { duration: 500, queue: false });
                }
            };
            swfu = new SWFUpload($.extend(defaults, options || {}));

            // Called when user clicks "cancel" (forces the upload to end, and eliminates progress bar immediately)
            $("span[id$=_uploading] input[type='button']", container2).click(function() {
                swfu.cancelUpload(null, false);
            });

            // Give the effect of preserving state, if requested
            if (options.existingFilename || "" != "") {
                $("span[id$=_completedMessage]", container2).html("Uploaded <b>{0}</b> ({1} KB)"
                                .replace("{0}", options.existingFilename)
                                .replace("{1}", options.existingFileSize ? Math.round(options.existingFileSize / 1024) : "?")
                            ).show();
                $("input[name$=_filename]", container2).val(options.existingFilename);
            }
            if (options.existingGuid || "" != "")
                $("input[name$=_guid]", container2).val(options.existingGuid);
        });
    }
})(jQuery);