/* Copyright 2003-2005 - Pierre Saslawsky - pierre at photobiker.com */

var ORIGINX    = 0;
var ORIGINY    = 0;
var PIXPER30   = 0;
var STARTPOINT = 0;
var ENDPOINT   = 0;

var slideshowList = 0;
var journalsList = 0;


var mouseLastX = 0;
var mouseLastY = 0;
var isIE = document.all?true:false;


function MouseMoveCallBack(e) {
	if (isIE) {
		mouseLastX = event.clientX + document.body.scrollLeft;
		mouseLastY = event.clientY + document.body.scrollTop;
	}
	else {
		mouseLastX = e.pageX;
		mouseLastY = e.pageY;
	}

	return true;
}

function initializeMap(isBig) {
	if (!isIE) document.captureEvents(Event.MOUSEMOVE);
	document.onmousemove = MouseMoveCallBack;

	var elt = document.getElementById("themap");
	if (elt) elt.src = (isBig ? getContinentMapBig(gCurrentContinent) : getContinentMap(gCurrentContinent));

	elt = document.getElementById("nextcontinent");
	if (elt) elt.src = getContinentIcon(normalizeContinentIndex(gCurrentContinent+1));


	elt = document.getElementById("previouscontinent");
	if (elt) {
		if (gCurrentContinent > 0) {
			elt.style.visibility = "visible";
			elt.src = getContinentIcon(gCurrentContinent-1);
		} else {
			elt.style.visibility = "hidden";
		}
	}

	var baseIndex = gCurrentContinent * ITEMS_PER_MAPDATA_ENTRY;
	ORIGINX = mapDataArray[baseIndex + (isBig ? INDEX_BIG_ORIGINX : INDEX_NORM_ORIGINX)];
	ORIGINY = mapDataArray[baseIndex + (isBig ? INDEX_BIG_ORIGINY : INDEX_NORM_ORIGINY)];
	PIXPER30 = mapDataArray[baseIndex + (isBig ? INDEX_BIG_PIXPER30 : INDEX_NORM_PIXPER30)];
	STARTPOINT = mapDataArray[baseIndex + INDEX_STARTPOINT];
	ENDPOINT = mapDataArray[baseIndex + INDEX_ENDPOINT];
	if (ENDPOINT > GPSCOUNT) {
		ENDPOINT = GPSCOUNT;
	}
}

function addGPSPoints() {
	if (ENDPOINT == 0) {
		showGPSPointData(0, GPSCOUNT);
		return;
	}
	showGPSPointData(0, ENDPOINT);
	var tag = "";
	for (var pointIndex = STARTPOINT; pointIndex <= ENDPOINT; pointIndex ++) {
		tag += addGPSDot(pointIndex);
	}
	var elt = document.getElementById("mapPointsContainer");
	elt.innerHTML = tag;

	var eltBlock = document.getElementById("pathBlock1");
	if (eltBlock) eltBlock.style.visibility = "visible";
}

function addSlideshowPointsForList(continent) {
	slideshowList = continentSlideshowArray[continent];
	var end = slideshowList.length / ITEMS_PER_SLIDESHOW_ENTRY;
	if (isNaN(end)) {
		return "";
	}
	var tag = "";
	for (var i = 0; i < end; i ++) {
		tag += addSlideshowDot(continent, i);
	}
	return tag;
}


function addSlideshowPoints() {
	var tag = addSlideshowPointsForList(gCurrentContinent);
	switch (gCurrentContinent) {
		case INDEX_AFRICA:	 tag += addSlideshowPointsForList(INDEX_SLIDESHOW_TRAINING);	break;
		case INDEX_NORTHAMERICA: tag += addSlideshowPointsForList(INDEX_SLIDESHOW_OLD);		break;
	}
	if (tag.length > 0) {
		var elt = document.getElementById("mapPointsContainer");
		elt.innerHTML = tag;
	}
	else {
		showSlideshowPointData(1, gCurrentContinent, -1);
	}
}


var journalIndex = new Array;
var journalMaxIndex = new Array;
function addJournalsPoints() {
	var hasJournal = false;
	journalsList = continentJournalsArray[gCurrentContinent];
	for (var i = 0; i < WRITERCOUNT; i++) {
		journalIndex[i] = 0;
		journalMaxIndex[i] = (journalsList[i].length / ITEMS_PER_JOURNAL_ENTRY) - 1;
		if (journalMaxIndex[i] > 0)
			hasJournal = true;
	}
	if (! hasJournal) {
		showJournalPointData(1, -1, 0, 0);
		return;
	}
	var tag = "";
	for (var pointIndex = ENDPOINT; pointIndex >= STARTPOINT; pointIndex --) {
		tag += addJournalsDots(pointIndex);
	}

	var elt = document.getElementById("mapPointsContainer");
	elt.innerHTML = tag;
}

var lastJournalX = 0;
var lastJournalY = 0;
var lastSameCount = 0;
var JOURNALTHRESHOLD = 9;

function addJournalsDots(index) {
	var baseIndex = (index - 1) * ITEMS_PER_ENTRY;
	var dateStr = gpsList[baseIndex + INDEX_DATE];
	var pointDate = Date.parse(dateStr);
	var tag = "";

	for (var i = 0; i < WRITERCOUNT; i++) {
		while (true) {
			if (journalIndex[i] > journalMaxIndex[i]) {
				break;
			}
			var aJournalList = journalsList[i];
			var journalBaseIndex = journalIndex[i] * ITEMS_PER_JOURNAL_ENTRY;
			var journalDateStr = aJournalList[journalBaseIndex + INDEX_JOURNAL_DATE];
			var journalDate = Date.parse(journalDateStr);
			if (isNaN(journalDate)) {					// for Safari
				journalDateStr = journalDateStr.split(' - ')[1];
				journalDate = Date.parse(journalDateStr);
			}
			if (journalDate >= pointDate) {
				var imageName = (i == 0 ? "pinkdot.gif" : "bluedot.gif");
				var imagePix = 9; // images are 9 pixels wide

				var coords = getGPSPointLocation(index).split(',');
				var x = coords[0] - (imagePix/2);
				var y = coords[1] - (imagePix/2);


				if (Math.abs(lastJournalX - x) <= JOURNALTHRESHOLD && Math.abs(lastJournalY - y) <= JOURNALTHRESHOLD) {
					lastSameCount++;
					x = lastJournalX + 3*lastSameCount;
					y = lastJournalY + 3*lastSameCount;
				}
				else {
					lastSameCount = 0;
					lastJournalX = x;
					lastJournalY = y;
				}

				var styleStr = 'position:absolute;cursor:pointer;cursor:hand;top:' + y + 'px;left:' + x + 'px;z-index:' + index + ';';
				var htmlStyleStr = ' style="' + styleStr + '"';
				var mouseOverStr = 'showJournalPointData(1,' + index + ',' + i + ',' + journalIndex[i] + ')';
				var htmlMouseOverStr = ' onmouseover="' + mouseOverStr + '"';
				var mouseOutStr = 'showJournalPointData(0,0,0,0)';
				var htmlMouseOutStr = ' onmouseout="' + mouseOutStr + '"';
				var clickStr = 'showJournalWindow(' + i + ',' + journalIndex[i] + ')';
				var htmlClickStr = ' onclick="' + clickStr + '"';
				tag += '<' + 'IMG SRC="dots/' + imageName + '"' 
					+ htmlStyleStr + htmlMouseOverStr + htmlMouseOutStr + htmlClickStr + '>';

				journalIndex[i]++;	// check if we have more journals at the same location
			}
			else {
				break;
			}
		}
	}
	return tag;
}

var lastY = 0;
function addGPSDot(index) {
	return addOneDot(index, 0, 0);
}
function addOneDot(index, imageName, imagePix) {
	if (imagePix == 0) imagePix = 6; // default images are 6 pixels wide
	var coords = getGPSPointLocation(index).split(',');
	var x = coords[0] - (imagePix/2);
	var y = coords[1] - (imagePix/2);

	if (index == STARTPOINT || index == ENDPOINT) {
		imageName = getSiteBaseUrl() + "map/dots/reddot.gif";
	} else {
		if (imageName == 0) {
			if (y >= lastY) {
				imageName = getSiteBaseUrl() + "map/dots/yellowdot.gif";
			} else {
				imageName = getSiteBaseUrl() + "map/dots/greendot.gif";
			}
		}
	}
	lastY = y;

	var styleStr = 'position:absolute;cursor:pointer;cursor:hand;top:' + y + 'px;left:' + x + 'px;z-index:' + index + ';';
	var htmlStyleStr = ' style="' + styleStr + '"';
	var mouseOverStr = 'showGPSPointData(1,' + index + ')';
	var htmlMouseOverStr = ' onmouseover="' + mouseOverStr + '"';
	var mouseOutStr = 'showGPSPointData(0,' + ENDPOINT + ')';
	var htmlMouseOutStr = ' onmouseout="' + mouseOutStr + '"';
	var clickStr = 'showHotelPics(' + index + ')';
	var htmlClickStr = ' onclick="' + clickStr + '"';
	var tag = '<' + 'IMG SRC="' + imageName + '"' 
		+ htmlStyleStr + htmlMouseOverStr + htmlMouseOutStr + htmlClickStr + '>';
	return tag;
}

function addSlideshowDot(continent, index) {
	slideshowList = continentSlideshowArray[continent];
	var baseIndex = index * ITEMS_PER_SLIDESHOW_ENTRY;
	var gpsCoords = String(slideshowList[baseIndex + INDEX_SLIDESHOW_GPS]);

	var coords = gpsToScreen(gpsCoords).split(',');


	var imagePix = 12; // images are 12 pixels wide
	var x = coords[0] - (imagePix/2);
	var y = coords[1] - (imagePix/2);

	var imageName = (continent >= CONTINENTSCOUNT ? "browndot.gif" : "cyandot.gif");
	var styleStr = 'position:absolute;cursor:pointer;cursor:hand;top:' + y + 'px;left:' + x + 'px;z-index:' + index + ';';
	var htmlStyleStr = ' style="' + styleStr + '"';
	var mouseOverStr = 'showSlideshowPointData(1,' + continent + ',' + index + ')';
	var htmlMouseOverStr = ' onmouseover="' + mouseOverStr + '"';
	var mouseOutStr = 'showSlideshowPointData(0,' + continent + ',' + ENDPOINT + ')';
	var htmlMouseOutStr = ' onmouseout="' + mouseOutStr + '"';
	var clickStr = 'showSlideshowWindow(' + continent + ',' + index + ')';
	var htmlClickStr = ' onclick="' + clickStr + '"';
	var tag = '<' + 'IMG SRC="dots/' + imageName + '"' 
		+ htmlStyleStr + htmlMouseOverStr + htmlMouseOutStr + htmlClickStr + '>';
	return tag;
}


function showHotelPics(index) {
	var hotelWindow = window.open(getSiteBaseUrl() + "map/hotelrooms.html?"+index, "hotelWindow", "height=400,width=460, scrollbars=yes,resizable=yes");
	hotelWindow.focus();
}



function showSlideshowWindow(continent, index) {
	slideshowList = continentSlideshowArray[continent];
	var baseIndex = index * ITEMS_PER_SLIDESHOW_ENTRY;
	var slideshowPath = String(slideshowList[baseIndex + INDEX_SLIDESHOW_PATH]);


	var windowPath = "../slideshows/slideshowindex.html?path=";
	if (slideshowPath.indexOf('/') == -1) {
		windowPath += "trip/"  + getContinentPath(continent)  + "/";
	}
	windowPath += slideshowPath;

	var features = "toolbar=no,status=yes,resizable=yes,scrollbars=yes,width=" + screen.availWidth + ",height=" + (screen.availHeight-40);
	var slideshowWindow = window.open(windowPath, "slideshowWindow", features);
	slideshowWindow.moveTo(0,0);
	slideshowWindow.focus();
}

function showJournalWindow(writer, journalIndex) {
	var journalBaseIndex = journalIndex * ITEMS_PER_JOURNAL_ENTRY;
	var writerBaseIndex = writer * ITEMS_PER_WRITER_ENTRY;
	var writerPath = journalWriterList[writerBaseIndex + INDEX_WRITER_PATH];
	var filePath = "../continents/" + getContinentPath(gCurrentContinent) + "/iblog/" + writerPath + "/unfiled/";
	switch (writer) {
		case 0: filePath += merrittEntries[journalIndex * ITEMS_PER_BLOGENTRY + INDEX_ENTRY_ID];	break;
		case 1: filePath +=  pierreEntries[journalIndex * ITEMS_PER_BLOGENTRY + INDEX_ENTRY_ID];	break;
	}
	filePath += "/index.html";
	var journalWindow = window.open(filePath, "journalWindow");
	journalWindow.focus();
}

function showJournalPointData(cursor, index, writer, journalIndex) {
	var eltBlock = document.getElementById("journalBlock1");
	var eltWriter = document.getElementById("journalWriter");
	var eltDate = document.getElementById("journalDate");
	var eltCountry = document.getElementById("journalCountry");
	var eltTitle = document.getElementById("journalTitle");
	var eltCommentsEN = document.getElementById("journalCommentsEN");
	var eltCommentsFR = document.getElementById("journalCommentsFR");
	if (!cursor) {
		eltBlock.style.visibility = "hidden";
		eltWriter.innerHTML = "";
		eltDate.innerHTML = "";
		eltCountry.innerHTML = "";
		eltTitle.innerHTML = "";
		eltCommentsEN.innerHTML = "";
		eltCommentsFR.innerHTML = "";
		return;
	}
	if (index < 0) {
		var titleStr;
		if (langFr)
			titleStr = "Nous n'avons pas encore publi&eacute; de journaux sur l'" + getContinentNameFR(gCurrentContinent) + "...";
		else
			titleStr = "No journals have been published for " + getContinentName(gCurrentContinent) + " yet...";
		eltTitle.innerHTML = "<br>" + titleStr + "<br><br>";
		eltBlock.style.visibility = "visible";
		return;
	}
	var baseIndex = (index - 1) * ITEMS_PER_ENTRY;
	var journalBaseIndex = journalIndex * ITEMS_PER_JOURNAL_ENTRY;
	var writerBaseIndex = writer * ITEMS_PER_WRITER_ENTRY;

	var writerStr = journalWriterList[writerBaseIndex + INDEX_WRITER_NAME];
	eltWriter.innerHTML = "<br><br>Written by " + writerStr + "<br>";

	var aJournalList = journalsList[writer];
	var journalDateStr = aJournalList[journalBaseIndex + INDEX_JOURNAL_DATE];
	eltDate.innerHTML = "(" + journalDateStr.split(' - ')[1] + ")";

	var countryStr = gpsList[baseIndex + INDEX_COUNTRY];
	countryStr = gpsList[baseIndex + INDEX_CITY] + ", " + countryStr;
	eltCountry.innerHTML = countryStr + "<br>";

	var titleStr = aJournalList[journalBaseIndex + INDEX_JOURNAL_TITLE];
	eltTitle.innerHTML = titleStr + "<br>";

	var commentsEN = aJournalList[journalBaseIndex + INDEX_JOURNAL_COMMENT_EN];
	eltCommentsEN.innerHTML = "<br>" + commentsEN;

	var commentsFR = aJournalList[journalBaseIndex + INDEX_JOURNAL_COMMENT_FR];
	eltCommentsFR.innerHTML = "<br>" + commentsFR;

	eltBlock.style.visibility = "visible";
	eltBlock.style.top = (mouseLastY - 40) + "px";
	eltBlock.style.left = (mouseLastX + 20) + "px";
}


function showSlideshowPointData(cursor, continent, index) {
	var eltBlock = document.getElementById("photoBlock1");
	var eltName = document.getElementById("slideshowName");
	var eltCommentsEN = document.getElementById("slideshowCommentsEN");
	var eltCommentsFR = document.getElementById("slideshowCommentsFR");
	var eltImage = document.getElementById("slideshowImage");
	if (!cursor) {
		eltBlock.style.visibility = "hidden";
		eltName.innerHTML = "";
		eltCommentsEN.innerHTML = "";
		eltCommentsFR.innerHTML = "";
		eltImage.innerHTML = "";
		return;
	}
	if (index < 0) {
		var name = "No slideshow has been published for " + getContinentName(continent) + " yet...";
		eltName.innerHTML = "<br>" + name + "<br><br>";
		eltBlock.style.visibility = "visible";
		return;
	}

	slideshowList = continentSlideshowArray[continent];
	var baseIndex = index * ITEMS_PER_SLIDESHOW_ENTRY;
	var name = slideshowList[baseIndex + INDEX_SLIDESHOW_NAME];
	var commentsEN = slideshowList[baseIndex + INDEX_SLIDESHOW_COMMENT_EN];

	var commentsFR = slideshowList[baseIndex + INDEX_SLIDESHOW_COMMENT_FR];
	var image = slideshowList[baseIndex + INDEX_SLIDESHOW_PICTURE];
	var imagePath = getSlideshowPath(continent, index) + "/smallimages/" + image;

	eltName.innerHTML = name + "<br>";
	eltCommentsEN.innerHTML = "<br>" + commentsEN;
	eltCommentsFR.innerHTML = "<br>" + commentsFR;
	eltImage.innerHTML = '<br><IMG SRC="' + imagePath + '" width="100%">';

	eltBlock.style.visibility = "visible";
	eltBlock.style.top = (mouseLastY - 60) + "px";
	eltBlock.style.left = (mouseLastX + 20) + "px";
}


function getSlideshowPath(slideshowIndex, index) {
	var slideShowList = continentSlideshowArray[slideshowIndex];
	var baseIndex = index * ITEMS_PER_SLIDESHOW_ENTRY;
	var path = slideShowList[baseIndex + INDEX_SLIDESHOW_PATH];
	var fullPath;
	if (path.indexOf('/') == -1)
		fullPath = "trip/" + getContinentPath(slideshowIndex) + "/" + path;
	else
		fullPath = path;
	return "../slideshows/" + fullPath;
}


function showGPSPointData(cursor, index) {
	var baseIndex = (index - 1) * ITEMS_PER_ENTRY;


	var useNextDate = false;
	var elt = document.getElementById("datatype");
	if (cursor==1) {
		if (elt) elt.innerHTML = "Waypoint #" + index;
	} else {
		if (index == GPSCOUNT) {
			if (elt) elt.innerHTML = "Latest Data";
		}
		else {
			if (elt) elt.innerHTML = "Last point in " + getContinentName(gCurrentContinent);
			useNextDate = true;
		}
	}

	elt = document.getElementById("picsicon");
	var picsCount = gpsList[baseIndex + INDEX_PICS];
	if (isNaN(picsCount)) {
		var data = picsCount.split('#');
		picsCount = data[1];
	}
	if (picsCount > 0) {
		if (elt) elt.style.visibility = "visible";
	} else {
		if (elt) elt.style.visibility = "hidden";
	}

	elt = document.getElementById("date");
	var dateIndex = (useNextDate ? baseIndex + ITEMS_PER_ENTRY : baseIndex);
	if (elt) elt.innerHTML = gpsList[dateIndex + INDEX_DATE];

	elt = document.getElementById("distance");
	var distance = gpsList[baseIndex + INDEX_KM] - KMSTART;
	if (elt) elt.innerHTML = formatDistance(distance);

	elt = document.getElementById("leg");
	var distancePrev = KMSTART;
	if (baseIndex > 0) {
		var baseIndexPrev = (index - 2) * ITEMS_PER_ENTRY;
		distancePrev = gpsList[baseIndexPrev + INDEX_KM];
	}
	distancePrev -= KMSTART;
	if (elt) elt.innerHTML = formatDistance(distance - distancePrev);

	elt = document.getElementById("country");
	if (elt) elt.innerHTML = gpsList[baseIndex + INDEX_COUNTRY];

	elt = document.getElementById("town");
	if (elt) elt.innerHTML = gpsList[baseIndex + INDEX_CITY];

	elt = document.getElementById("altitude");
	if (elt) elt.innerHTML = formatAltitude(gpsList[baseIndex + INDEX_ALTITUDE]);

	elt = document.getElementById("temperature");
	if (elt) elt.innerHTML = formatTemperature(gpsList[baseIndex + INDEX_TEMPERATURE]);

	elt = document.getElementById("gps");
	// var gpsStr = gpsList[baseIndex + INDEX_GPS] + " (" + getGPSPointLocation(index) + ")";
	var gpsStr = gpsList[baseIndex + INDEX_GPS];
	if (elt) elt.innerHTML = gpsStr;

	elt = document.getElementById("accomodation");
	if (elt) elt.innerHTML = gpsList[baseIndex + INDEX_ACCOMODATION];

	elt = document.getElementById("price");
	if (elt) elt.innerHTML = formatPrice(gpsList[baseIndex + INDEX_PRICE]);
}

function formatLargeNumber(number) {
	if (number > 1000) {
		var separator = (langFr ? '.' : ',');
		var units = number%1000;
		if (units < 10)
			units = "00" + units;
		else if (units < 100)
			units = "0" + units;
		number = Math.floor(number/1000) + separator + units;
	}
	return number;
}

function formatDistance(distance) {
	return formatLargeNumber(distance) + "km - " + formatLargeNumber(Math.round(distance / 1.608)) + "mi";
}

function formatAltitude(altitude) {
	return altitude + "m - " + (Math.round(altitude / 0.305 / 10))*10 + "ft";
}

function formatTemperature(tempIn) {
	var tempWords = tempIn.split(' ');
	var tempOut = tempWords[0] + 'C - ';

	var tempMeasures = tempWords[0].split('/');
	tempOut += celsiusToFarenheit(tempMeasures[0]);
	if (tempMeasures.length == 2) {
		tempOut += '/' + celsiusToFarenheit(tempMeasures[1]);
	}
	tempOut += 'F';
	if (tempWords.length == 2) {
		tempOut += ' ' + tempWords[1];
	}
	return tempOut;
}

function celsiusToFarenheit(temp) {
	return Math.round(((temp * 9) / 5) + 32);
}

function formatPrice(priceIn) {
	var priceWords = priceIn.split(' ');
	if (priceWords.length < 2) {
		return priceIn;  // the price was probably 0
	}
	var value = priceWords[0];
	var currency = priceWords[1];
	if (currency == "USD") {
		return 'US$' + value;
	}

	var ratio = 0;
	for (i=0; i<CURRENCYCOUNT; i++) {
		if (currency == currencyList[i*ITEMS_PER_CURRENCY_ENTRY + INDEX_CURRENCY]) {
			ratio = currencyList[i*ITEMS_PER_CURRENCY_ENTRY + INDEX_RATIO];
		}
	}
	if (ratio == 0) {
		return priceIn;  // did not find the currency
	}
	var dollarPrice = value / ratio;
	if (dollarPrice < 10) {
		dollarPrice = Math.round(dollarPrice * 10) / 10;
	} else {
		dollarPrice = Math.round(dollarPrice);
	}

	var priceOut = priceIn + ' - US$' + dollarPrice;
	return priceOut;
}


function getGPSPointLocation(index) {
	var baseIndex = (index - 1) * ITEMS_PER_ENTRY;
	var gpsCoords = gpsList[baseIndex + INDEX_GPS];

	return gpsToScreen(gpsCoords);
}

function gpsToScreen(gpsString) {
	var gpsCoords = gpsString.split('/');
	var x = 1;
	var y = 1;
	var latitude = String(gpsCoords[0]);
	var longitude = String(gpsCoords[1]);

	var aLetter = latitude.charAt(0);
	if ((aLetter == 'N') || (aLetter == 'n')) {
		y = -1;
	}
	if ((aLetter == 'S') || (aLetter == 's')) {
		y = 1;
	}
	latitude = latitude.substr(1);
	var latFloat = convertAngularToDecimal(parseFloat(latitude) * y);

	aLetter = longitude.charAt(0);
	if ((aLetter == 'W') || (aLetter == 'w')) {
		x = -1;
	} else if ((aLetter == 'E') || (aLetter == 'e')) {
		x = 1;
	}
	longitude = longitude.substr(1);
	var longFloat = convertAngularToDecimal(parseFloat(longitude) * x);

	y = ORIGINY + Math.round((latFloat * PIXPER30) / 30);
	x = ORIGINX + Math.round((longFloat * PIXPER30) / 30);
	var gpsStr = x + "," + y;

	return gpsStr;
}

function convertAngularToDecimal(aFloat) {
	var integerPart;
	if (aFloat > 0)
		integerPart = Math.floor(aFloat);
	else
		integerPart = Math.ceil(aFloat);
	var decimalPart = (Math.floor(Math.abs(aFloat) * 100)) % 100;
	decimalPart = Math.round((decimalPart * 100) / 60);
	if (integerPart <= 0)
		decimalPart = decimalPart * (-1);
	aFloat = integerPart + (decimalPart / 100);
	return aFloat;
}