var tvDir = "../tv/";

var currentTime;
var startTime;
var endTime;
// Set width (seconds per pixel)
var widthPx = 15;
var dragTV;

function xmlvalue(content) {
	if (content.textContent)
		return content.textContent;
	else {
//		document.getElementById("tvinfo").innerHTML += content.childNodes[0].nodeValue + "<br />";
		return content.childNodes[0].nodeValue;
	}

}
function unixtime() {
	var ut=new Date();
	var h,m,s,ms;
	today = new Date();
	unixborn = new Date(70,0,1);
	unixborn.setHours(15);
	diff = today.getTime();
	diff /= 1000;
	diff = parseInt(diff);
	return diff;
}

function loadtv(s) {
	if (s > 0)
		unixtime = s;
	else
		unixtime = unixtime() - 900;
	var start = parseInt(unixtime) - parseInt(60 * 60 * 3);
	endTime = parseInt(unixtime) + parseInt(60 * 60 * 5);
	var url = tvDir+"listings.php?s=" + start + "&e=" + endTime;
	if (window.XMLHttpRequest) {
		var tvrequest = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		try {
			var tvrequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
			try {
				var tvrequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e) {
				return 0;
			}
		}
	} else {
		return 0;
	}
		tvrequest.open("GET",url);
//	tvrequest.onload = function() {
		tvrequest.onreadystatechange = function() {
			if (tvrequest.readyState == 4) {

			var xmlDoc = tvrequest.responseXML;
			var feedlist = '';
			var markers = xmlDoc.documentElement.getElementsByTagName("item");
			startTime = 0;
			var currentChannel;
			var currentChannelNo = 0;
			var channels = Array();
			for (var i = 0; i < markers.length; i++) {
				if (xmlvalue(xmlDoc.documentElement.getElementsByTagName("channel")[i]) != currentChannel) {
					currentChannel = xmlvalue(xmlDoc.documentElement.getElementsByTagName("channel")[i]);
					currentChannelNo += 1;
					if (feedlist)
						feedlist += '</ul>';
					channels[currentChannelNo] = currentChannel;
			/*
				Padding for:
					Firefox = *20 -6
					IE      = *14
					Opera   = ?
			*/
								feedlist += '<ul style="top: ' +(currentChannelNo * 24 -4)+ 'px;">';
				}
				if (startTime == 0)
					startTime = xmlvalue(xmlDoc.documentElement.getElementsByTagName("start")[i]);
				var liheight = parseFloat(xmlvalue(xmlDoc.documentElement.getElementsByTagName("duration")[i]) / widthPx);
				var listart = parseFloat((xmlvalue(xmlDoc.documentElement.getElementsByTagName("start")[i]) - startTime )/ widthPx);
				if (xmlvalue(xmlDoc.documentElement.getElementsByTagName("fav")[i]) == 1) {
					feedlist += '<li class="favourite" ';
				} else {
					feedlist += '<li class="normal" ';
				} //
				feedlist += 'style="left: ' + listart + 'px; width: ' + (liheight - 3) + 'px;" onclick="tvinfo(\'' ;
				feedlist += xmlvalue(xmlDoc.documentElement.getElementsByTagName("crid")[i]) + '\');">';
				feedlist += xmlvalue(xmlDoc.documentElement.getElementsByTagName("title")[i]) + '</li>';
				endTime = parseInt(xmlvalue(xmlDoc.documentElement.getElementsByTagName("start")[i])) + parseInt(xmlvalue(xmlDoc.documentElement.getElementsByTagName("duration")[i]));

			}

			var feedTime = '<ul class="tvtime" style="top: 0px;">';
			if (Math.ceil(startTime / (60 * 30)) == (startTime / (60 * 30))) {
				var feedStartTime = startTime;
			} else {
				var feedStartTime = Math.ceil(startTime / (60 * 30)) * 60 * 30;
			}
			var thirtyNo = Math.floor((endTime - feedStartTime) / (60*30));
			for (var i = 0; i < thirtyNo; i++) {

				feedTime += '<li style="left: ' + parseInt( ((parseFloat(feedStartTime) + parseFloat(i * 30 * 60)) - startTime )/ widthPx) + 'px; width: '+ (1800 /  widthPx) + 'px;">'
				feedTime += '<acronym title="' + c2ht((parseFloat(feedStartTime) + parseFloat(i * 30 * 60)),2,"l d/m/y h:n") + '">';
				feedTime += c2ht((parseFloat(feedStartTime) + parseFloat(i * 30 * 60)),2,"h:n") + '</acronym></li>';
			}
			feedlist = feedTime + '</ul>' + feedlist;
			var channelList = '<ul class="channellist">';
			for (var i = 1; i < channels.length; i++) {
			/*
				Padding for:
					Firefox = 0px
					IE      = 4px
					Opera   = 11px
			*/
							//style="top: ' + (((i + 1) * 20) - 4 ) + '"

				channelList += '<li>' + channels[i] + '</li>';
			}
			channelList += '</ul>';
			 document.getElementById('tvchannels').innerHTML = channelList;
			document.getElementById('tv').innerHTML = feedlist + '</ul>';
			if (s > 0)
				var startmod = 0;
			else
				var startmod = +50;
			document.getElementById('tv').scrollLeft = ((unixtime - startTime) / widthPx) + startmod;
			currentTime = parseInt(startTime) + parseInt((unixtime - startTime) + (startmod * widthPx));
			//document.getElementById('tvinfo').innerHTML = '';
		}
	}
	tvrequest.send(null);
}
function updateTime() {
	currentTime = Number(startTime) + Number(document.getElementById('tv').scrollLeft * widthPx);
	dragTV = 0;
	if ((currentTime + (document.getElementById('tv').offsetWidth * widthPx)) > (endTime - 7200)) {
		// update listings
		loadtv(currentTime);
	}
	if (currentTime < (parseInt(startTime) + 7200)) {
		loadtv(currentTime);
	}
//	document.getElementById('tvinfo').innerHTML = currentTime + " - "+ (startTime + 360);

}
function startDrag(e) {
	if (!e)
		e = window.event;
	dragTV = parseInt(e.screenX) + 1;
}

function doDrag(e) {
	if (dragTV > 0) {
		if (!e)
			e = window.event;
//		document.getElementById('tvinfo').innerHTML = e.screenX;
//		document.getElementById('tv').scrollLeft = parseInt(document.getElementById('tv').scrollLeft) + ((parseInt(e.screenX) - (dragTV - 1)) * (((endTime - startTime) / widthPx) / document.getElementById('tv').offsetWidth));
		document.getElementById('tv').scrollLeft = parseInt(document.getElementById('tv').scrollLeft) - ((parseInt(e.screenX) - (dragTV - 1)));

		dragTV = parseInt(e.screenX) + 1;
	}
}
function startEvent() {
//	alert('hi');
	document.getElementById('tv').onmousedown = startDrag;
	document.getElementById('tv').onmousemove = doDrag;
	document.getElementById('tv').onmouseup = updateTime;
	document.getElementById('tv').onmouseout = updateTime;
//	tv.attachEvent('onmousedown',startDrag);
//	tv.addEventListener('mousedown',startDrag,false);
}
function tvinfo(crid) {
	var url = tvDir+'tvinfo.php?crid=' + crid;
       if (window.XMLHttpRequest) {
                var tvrequest = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
                try {
                        var tvrequest = new ActiveXObject("Msxml2.XMLHTTP");
                } catch(e) {
                        try {
                                var tvrequest = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch(e) {
                                return 0;
                        }
                }
        } else {
                return 0;
        }
	tvrequest.open("GET",url);
	tvrequest.onreadystatechange = function() {
		if (tvrequest.readyState == 4) {
                        var xmlDoc = tvrequest.responseXML;
                        document.getElementById('tvinfo').innerHTML = "<div class='content'> " + xmlvalue(xmlDoc.documentElement.getElementsByTagName("tvinfo")[0]) + "</div>";
		}
 	}
	tvrequest.send(null);


}

function addfav(title) {
	var url = tvDir+'fav.php?t=1&add=1&title=' + title;
       if (window.XMLHttpRequest) {
                var tvfav = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
                try {
                        var tvfav = new ActiveXObject("Msxml2.XMLHTTP");
                } catch(e) {
                        try {
                                var tvfav = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch(e) {
                                return 0;
                        }
                }
        } else {
                return 0;
        }
	tvfav.open("GET",url);
	tvfav.onreadystatechange = function() {
		if (tvfav.readyState == 4) {
			if (tvfav.responseText > 2)
				alert("Programme added to favourites");
			else
				alert("Failed to add programme to favourites (Response: " + tvfav.responseText + ")");
			loadtv(currentTime);
		}
 	}
	tvfav.send(null);


}

function tvsearch(type,search) {
	var url = tvDir+'search.php?' + type + '=' + search;
	if (window.XMLHttpRequest) {
                var tvrequest = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
                try {
                        var tvrequest = new ActiveXObject("Msxml2.XMLHTTP");
                } catch(e) {
                        try {
                                var tvrequest = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch(e) {
                                return 0;
                        }
                }
        } else {
                return 0;
        }
	tvrequest.open("GET",url);
	tvrequest.onreadystatechange = function() {
		if (tvrequest.readyState == 4) {
                        var xmlDoc = tvrequest.responseXML;
                        document.getElementById('tvinfo').innerHTML = "<div class='content'> " + xmlvalue(xmlDoc.documentElement.getElementsByTagName("tvinfo")[0]) + "</div>";
		}
 	}
	tvrequest.send(null);


}

function viewfav() {
	var url = tvDir+'viewfav.php';
	if (window.XMLHttpRequest) {
                var tvrequest = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
                try {
                        var tvrequest = new ActiveXObject("Msxml2.XMLHTTP");
                } catch(e) {
                        try {
                                var tvrequest = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch(e) {
                                return 0;
                        }
                }
        } else {
                return 0;
        }
	tvrequest.open("GET",url);
	tvrequest.onreadystatechange = function() {
		if (tvrequest.readyState == 4) {
                        var xmlDoc = tvrequest.responseXML;
                        document.getElementById('tvinfo').innerHTML = "<div class='content'> " + xmlvalue(xmlDoc.documentElement.getElementsByTagName("tvinfo")[0]) + "</div>";
		}
 	}
	tvrequest.send(null);


}
function editfav() {
	var url = tvDir+'fav.php';
	if (window.XMLHttpRequest) {
                var tvrequest = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
                try {
                        var tvrequest = new ActiveXObject("Msxml2.XMLHTTP");
                } catch(e) {
                        try {
                                var tvrequest = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch(e) {
                                return 0;
                        }
                }
        } else {
                return 0;
        }
	tvrequest.open("GET",url);
	tvrequest.onreadystatechange = function() {
		if (tvrequest.readyState == 4) {
                        var xmlDoc = tvrequest.responseXML;
                        var favs = xmlvalue(xmlDoc.documentElement.getElementsByTagName("tvinfo")[0]);
                        //while (favs.indexOf("\\r\\n")) {
                        //	favs = favs.replace("/\\r\\n/gi","\r\n");
                        //}
                        document.getElementById('tvinfo').innerHTML = "<div class='content'> " + favs.replace(/\\r\\n/g,"\r\n"); + "</div>";
		}
 	}
	tvrequest.send(null);


}

function c2ht(ut) {
 var ut = ut * 1000;
 var d = new Date();
 var hmdt = new String();
 d.setTime(ut);
 if (arguments[1] == 1) {
  hmdt = lz(d.getHours()) + ":" + lz(d.getMinutes()) + ":" + lz(d.getSeconds());
 } else if (arguments[1] == 2) {
  if (arguments[2] == undefined) {
   hmdt = lz(d.getDate()) + "/" + lz(d.getMonth()+1) + "/" + d.getFullYear();
  } else {
   format = String(arguments[2]);
   for (i=0;i <= format.length;i++) {
    charac = format.substr(i,1);
    switch (charac) {
     case "d":
      hmdt = hmdt + String(lz(d.getDate()));
     break;
     case "m":
      hmdt = hmdt + String(lz(d.getMonth()));
     break;
     case "y":
      hmdt = hmdt + String(lz(d.getFullYear()));
     break;
     case "h":
      hmdt = hmdt + String(lz(d.getHours()));
     break;
     case "n":
      hmdt = hmdt + String(lz(d.getMinutes()));
     break;
     case "s":
      hmdt = hmdt + String(lz(d.getSeconds()));
     break;
     case "l":
      switch(d.getDay()) {
       case 0: dn = "Sunday"; break;
       case 1: dn = "Monday"; break;
       case 2: dn = "Tuesday"; break;
       case 3: dn = "Wednesday"; break;
       case 4: dn = "Thursday"; break;
       case 5: dn = "Friday"; break;
       case 6: dn = "Saturday"; break;
      }
      hmdt = hmdt + String(dn);
     break;
     default:
      hmdt = hmdt + String(charac);
     break;
    }
   }
  }
 } else {
  hmdt = lz(d.getHours()) + ":" + lz(d.getMinutes()) + ":" + lz(d.getSeconds());
 }
 return hmdt;
}
function lz(a) {
 a = String(a);
 a.length;
 if (a.length < 2) {
  a = "0" + a;
 }
 return a;
}

function toggle() {
 if (document.getElementById('tvmenucontent').style.display == 'block') {
  document.getElementById('tvmenucontent').style.display = 'none';
  document.getElementById('tvmenutitle').innerHTML = '<div style="float: right;padding-right: 5px;">[+]</div>Menu';
 } else {
  document.getElementById('tvmenucontent').style.display = 'block';
  document.getElementById('tvmenutitle').innerHTML = '<div style="float: right; padding-right: 5px;">[-]</div>Menu';
 }
}