/*
 * Mrrha 1.1
 *
 * Copyright (c) 2009 Mrrha
 */

var upload_range = 1;
var get_data_loop = false;
var get_status_url;
var seconds = 0;
var minutes = 0;
var hours = 0;
var info_width = 0;
var info_bytes = 0;
var info_time_width = 500;
var info_time_bytes = 15;
var cedric_hold = true;
var total_upload_size = 0;
var total_Kbytes = 0;
var bytesID;
var statusID;

// Check the file format before uploading
function checkFileNameFormat()
{
	if(!check_file_name_format){ return false; }

	for(var i = 0; i < upload_range; i++)
	{
		if(document.form_upload.elements['file_' + i].value != "")
		{
			var string = document.form_upload.elements['file_' + i].value;
			var num_of_last_slash = string.lastIndexOf("\\");

			if(num_of_last_slash < 1){ num_of_last_slash = string.lastIndexOf("/"); }

			var file_name = string.slice(num_of_last_slash + 1, string.length);
			var re = /^[\w][\w\.\-\s]{1,48}$/i;

			if(!re.test(file_name))
			{
				alert("عذراً، رفع ملف بهذا الاسم ممنوع، من فضلك تأكد من كون اسم الملف\n\n1 - لا يتعدى عدد احرفه 48 حرف\n2 - يجب ان يكون اسم الملف يتبعه الإمتداد او اسم الملف فقط\n3 - الأحرف المسموح بها في الاسم الارقام من 1 إلى 9، و الأحرف من a إلى z، و الأحرف من A إلى Z، العلامة _، العلامة -، المسافة\n");
				return true;
			}
		}
	}

	return false;
}

// Check for legal file extentions
function checkAllowFileExtensions()
{
	if(!check_allow_extensions_on_client){ return false; }

	for(var i = 0; i < upload_range; i++)
	{
		if(document.form_upload.elements['file_' + i].value != "")
		{
			if(!document.form_upload.elements['file_' + i].value.match(allow_extensions))
			{
				var string = document.form_upload.elements['file_' + i].value;
				var num_of_last_slash = string.lastIndexOf("\\");

				if(num_of_last_slash < 1){ num_of_last_slash = string.lastIndexOf("/"); }

				var file_name = string.slice(num_of_last_slash + 1, string.length);
				var file_extension = file_name.slice(file_name.indexOf(".")).toLowerCase();

				alert('رفع ملف بهذا الإمتداد "' + file_extension + '" ممنوع.');
				return true;
			}
		}
	}

	return false;
}

// Check for illegal file extentions
function checkDisallowFileExtensions()
{
	if(!check_disallow_extensions_on_client){ return false; }

	for(var i = 0; i < upload_range; i++)
	{
		if(document.form_upload.elements['file_' + i].value != "")
		{
			if(document.form_upload.elements['file_' + i].value.match(disallow_extensions))
			{
				var string = document.form_upload.elements['file_' + i].value;
				var num_of_last_slash = string.lastIndexOf("\\");

				if(num_of_last_slash < 1){ num_of_last_slash = string.lastIndexOf("/"); }

				var file_name = string.slice(num_of_last_slash + 1, string.length);
				var file_extension = file_name.slice(file_name.indexOf(".")).toLowerCase();

				alert('رفع ملف بهذا الإمتداد "' + file_extension + '" ممنوع.');
				return true;
			}
		}
	}

	return false;
}

// Make sure the user selected at least one file
function checkNullFileCount()
{
	if(!check_null_file_count){ return false; }

	var null_file_count = 0;

	for(var i = 0; i < upload_range; i++)
	{
		if(document.form_upload.elements['file_' + i].value == ""){ null_file_count++; }
	}

	if(null_file_count == upload_range)
	{
		alert("من فضلك اختر ملف لرفعه.");
		return true;
	}

	else{ return false; }
}

// Make sure the user is not uploading duplicate files
function checkDuplicateFileCount()
{
	if(!check_duplicate_file_count){ return false; }

	var duplicate_flag = false;
	var file_count = 0;
	var duplicate_msg = "Duplicate Upload Files Detected.\n\n";
	var file_name_array = new Array();

	for(var i = 0; i < upload_range; i++)
	{
		if(document.form_upload.elements['file_' + i].value != "")
		{
			var string = document.form_upload.elements['file_' + i].value;
			var num_of_last_slash = string.lastIndexOf("\\");

			if(num_of_last_slash < 1){ num_of_last_slash = string.lastIndexOf("/"); }

			var file_name = string.slice(num_of_last_slash + 1, string.length);
			file_name_array[i] = file_name;
		}
	}

	var num_files = file_name_array.length;

	for(var i = 0; i < num_files; i++)
	{
		for(var j = 0; j < num_files; j++)
		{
			if(file_name_array[i] == file_name_array[j] && file_name_array[i] != null){ file_count++; }
		}

		if(file_count > 1)
		{
			duplicate_msg += 'Duplicate file "' + file_name_array[i] + '" detected in slot ' + (i + 1) + ".\n";
			duplicate_flag = true;
		}

		file_count = 0;
	}

	if(duplicate_flag)
	{
		alert(duplicate_msg);
		return true;
	}

	else{ return false; }
}


function resetForm(){ location.href = self.location; }
function hideProgressBar(){ document.getElementById('progress_bar').style.display = "none"; }

function showDebugMessage(message)
{
	// document.getElementById('ubr_debug').innerHTML += message + '<br>';
}

function clearDebugMessage()
{
	// document.getElementById('ubr_debug').innerHTML = '';
}

function showAlertMessage(message)
{
	// document.getElementById('ubr_alert').innerHTML = message; 
}

function clearAlertMessage()
{
	// document.getElementById('ubr_alert').innerHTML = ''; 
}

function stopDataLoop(){ get_data_loop = false; }

// Initialize the file upload page
function iniFilePage()
{
	resetProgressBar();
	clearAlertMessage();

	for(var i = 0; i < upload_range; i++)
	{
		document.form_upload.elements['file_' + i].disabled = false;
		document.form_upload.elements['file_' + i].value = "";
	}

	document.getElementById('upload_button').disabled = false;
	document.getElementById('progress_bar').style.display = "none";
	document.form_upload.reset();
}

// Reset the progress bar
function resetProgressBar()
{
	get_data_loop = false;
	seconds = 0;
	minutes = 0;
	hours = 0;
	info_width = 0;
	info_bytes = 0;
	cedric_hold = true;
	total_upload_size = 0;
	total_Kbytes = 0;

	document.getElementById('upload_status').style.width = '0px';

	if(show_percent_complete){ document.getElementById('percent').innerHTML = '0%'; }
	if(show_files_uploaded){ document.getElementById('uploaded_files').innerHTML = 0; }
	if(show_files_uploaded){ document.getElementById('total_uploads').innerHTML = ''; }
	if(show_current_position){ document.getElementById('current').innerHTML = 0; }
	if(show_current_position){ document.getElementById('total_kbytes').innerHTML = ''; }
	if(show_elapsed_time){ document.getElementById('time').innerHTML = 0; }
	if(show_est_time_left){ document.getElementById('remain').innerHTML = 0; }
	if(show_est_speed){ document.getElementById('speed').innerHTML = 0; }
}

// Handle user pressing 'Enter' in the upload slots
function handleKey(event)
{
	if(document.all){ if(window.event.keyCode == 13){ return false; } }
	else{ if(event && event.which == 13){ return false; } }
}

// Link the upload
function linkUpload()
{
	var elements = document.getElementsByTagName("input");
	var count = 0;

	for( i = 0; i < elements.length; i++ )
	{
		if( elements[i].type == "checkbox" )
		{
			if( elements[i].checked )
			count++;
		}
	}

	if( count == 1 )
	{
		alert("من فضلك اختر على الأقل موقع واحد لتمرير الملف إليه.");
		return false;
	}

	if(checkAllowFileExtensions()){ return false; }
	if(checkDisallowFileExtensions()){ return false; }
	if(checkNullFileCount()){ return false; }
	if(checkDuplicateFileCount()){ return false; }	

	document.getElementById('upload_button').disabled = true;

	if(show_files_uploaded)
	{
		var total_uploads = 0;

		for(var i = 0; i < upload_range; i++)
		{
			if(document.form_upload.elements['file_' + i].value != ""){ total_uploads++; }
		}

		document.getElementById('total_uploads').innerHTML = total_uploads;
	}

	var jsel = document.createElement('SCRIPT');
	var day = new Date;
	var dom;

	if(document.getElementById('ajax_div')){ dom = document.getElementById('ajax_div'); }
	else{ dom = document.body; }

	jsel.type = 'text/javascript';
	jsel.src = path_to_link_script + '?rnd_id=' + day.getTime();

	dom.appendChild(jsel);
	dom = null;

	jsel = null;
	day = null;
}

//Submit the upload form
function startUpload(upload_id, debug_upload)
{
	document.form_upload.action = path_to_upload_script + '?upload_id=' +  upload_id;
	document.form_upload.submit();

	for(var i = 0; i < upload_range; i++){ document.form_upload.elements['file_' + i].disabled = true; }

	if(document.getElementById('upload_div')){ document.getElementById('upload_div').style.display = "none"; }

	if(!debug_upload){ initializeProgressBar(upload_id); }
}


// Initialize progress bar
function initializeProgressBar(upload_id)
{
	var jsel = document.createElement('SCRIPT');
	var dom;

	if(document.getElementById('ajax_div')){ dom = document.getElementById('ajax_div'); }
	else{ dom = document.body; }

	jsel.type = 'text/javascript';
	jsel.src = path_to_set_progress_script + '?upload_id=' + upload_id;

	dom.appendChild(jsel);
	dom = null;

	jsel = null;
	day = null;
}

// Stop the upload
function stopUpload()
{
	try{ window.stop(); }
	catch(e)
	{
		try{ document.execCommand('Stop'); }
		catch(e){}
	}
}

//Start the progress bar
function startProgressBar(upload_id, upload_size, start_time)
{
	total_upload_size = upload_size;
	total_Kbytes = Math.round(total_upload_size / 1024);
	get_status_url = path_to_get_progress_script + '?upload_id=' + upload_id + '&start_time=' + start_time + '&total_upload_size=' + total_upload_size;
	get_data_loop = true;

	document.getElementById('progress_bar').style.display = "block";

	if(show_current_position){ document.getElementById('total_kbytes').innerHTML = total_Kbytes + " "; }
	if(show_elapsed_time){ getElapsedTime(); }

	getProgressStatus();

	if(cedric_progress_bar == 1)
	{
		if(show_current_position){ smoothCedricBytes(); }
		smoothCedricStatus();
	}
}

// Calculate and display upload stats
function setProgressStatus(bytes_read, lapsed_time, uploaded_files)
{
	var byte_speed = 0;
	var time_remaining = 0;
	var dom;

	if(lapsed_time > 0){ byte_speed = bytes_read / lapsed_time; }
	if(byte_speed > 0){ time_remaining = Math.round((total_upload_size - bytes_read) / byte_speed); }

	if(cedric_progress_bar == 1)
	{
		if(byte_speed != 0)
		{
			var temp_info_time_width = Math.round(total_upload_size * 1000 / (byte_speed * progress_bar_width));
			var temp_info_time_bytes = Math.round(1024000 / byte_speed);

			if(temp_info_time_width < 5001){ info_time_width = temp_info_time_width; }
			if(temp_info_time_bytes < 5001){ info_time_bytes = temp_info_time_bytes; }
		}
		else
		{
			info_time_width = 500;
			info_time_bytes = 15;
		}
	}

	// Calculate percent finished
	var percent_float = bytes_read / total_upload_size;
	var percent = Math.round(percent_float * 100);
	var progress_bar_status = Math.round(percent_float * progress_bar_width);

	// Calculate time remaining
	var remaining_sec = (time_remaining % 60);
	var remaining_min = (((time_remaining - remaining_sec) % 3600) / 60);
	var remaining_hours = ((((time_remaining - remaining_sec) - (remaining_min * 60)) % 86400) / 3600);

	if(remaining_sec < 10){ remaining_sec = '0' + remaining_sec; }
	if(remaining_min < 10){ remaining_min = '0' + remaining_min; }
	if(remaining_hours < 10){ remaining_hours = '0' + remaining_hours; }

	var time_remaining_f = remaining_hours + ':' + remaining_min + ':' + remaining_sec;
	var Kbyte_speed = Math.round(byte_speed / 1024);
	var Kbytes_read = Math.round(bytes_read / 1024);

	if(cedric_progress_bar == 1)
	{
		if(cedric_hold_to_sync)
		{
			if(progress_bar_status < info_width){ cedric_hold = true; }
			else{
				cedric_hold = false;
				info_width = progress_bar_status;
				info_bytes = Kbytes_read;
			}
		}
		else{
			cedric_hold = false;
			info_width = progress_bar_status;
			info_bytes = Kbytes_read;
		}
	}

	dom = document.getElementById('upload_status');
	dom.style.width = progress_bar_status + 'px';

	if(show_current_position)
	{
		dom = document.getElementById('current');
		dom.innerHTML = Kbytes_read;
	}

	if(show_percent_complete)
	{
		dom = document.getElementById('percent')
		dom.innerHTML = percent + '%';
	}

	if(show_files_uploaded)
	{
		dom = document.getElementById('uploaded_files');
		dom.innerHTML = uploaded_files;
	}

	if(show_est_time_left)
	{
		dom = document.getElementById('remain');
		dom.innerHTML = time_remaining_f;
	}

	if(show_est_speed)
	{
		dom = document.getElementById('speed');
		dom.innerHTML = Kbyte_speed;
	}

	dom = null;
}

// Get the progress of the upload
function getProgressStatus()
{
	var jsel = document.createElement('SCRIPT');
	var day = new Date;
	var dom;

	if(document.getElementById('ajax_div'))
	{
		dom = document.getElementById('ajax_div');
		dom.innerHTML = '';
	}
	else{ dom = document.body; }

	jsel.type = 'text/javascript';
	jsel.src = get_status_url + "&rnd_id=" + day.getTime();

	dom.appendChild(jsel);
	dom = null;

	jsel = null;
	day = null;
}

// Calculate the time spent uploading
function getElapsedTime()
{
	seconds++;

	if(seconds == 60)
	{
		seconds = 0;
		minutes++;
	}

	if(minutes == 60)
	{
		minutes = 0;
		hours++;
	}

	var hr = "" + ((hours < 10) ? "0" : "") + hours;
	var min = "" + ((minutes < 10) ? "0" : "") + minutes;
	var sec = "" + ((seconds < 10) ? "0" : "") + seconds;
	var dom = document.getElementById('time')

	dom.innerHTML = hr + ":" + min + ":" + sec;
	dom = null;

	hr = null;
	min = null;
	sec = null;

	if(get_data_loop){ setTimeout("getElapsedTime()", 1000); }
}

// Make the progress bar smooth
function smoothCedricStatus()
{
	if(info_width < progress_bar_width && !cedric_hold)
	{
		info_width++;
		var dom = document.getElementById('upload_status');

		dom.style.width = info_width + 'px';
		dom = null;
	}

	if(get_data_loop)
	{
		clearTimeout(statusID);
		statusID = setTimeout("smoothCedricStatus()", info_time_width);
	}
}

// Make the bytes uploaded smooth
function smoothCedricBytes()
{
	if(info_bytes < total_Kbytes && !cedric_hold)
	{
		info_bytes++;
		var dom = document.getElementById('current');

		dom.innerHTML = info_bytes;
		dom = null;
	}

	if(get_data_loop)
	{
		clearTimeout(bytesID);
		bytesID = setTimeout("smoothCedricBytes()", info_time_bytes);
	}
}