// Copyright (c) 2006 Industrial Video & Control Co. LLC.  All rights reserved.
// request relay server commands
function requestPointClick(feedId, width, height, pointX, pointY) {
    requestCommandAsync(createPointClickCommand(feedId, width, height, pointX, pointY));
}
function requestPanLeft(feedId, dist, unit) {
    requestCommandAsync(createPanLeftCommand(feedId, dist, unit));
}
function requestPanRight(feedId, dist, unit) {
    requestCommandAsync(createPanRightCommand(feedId, dist, unit));
}
function requestTiltUp(feedId, dist, unit) {
    requestCommandAsync(createTiltUpCommand(feedId, dist, unit));
}
function requestTiltDown(feedId, dist, unit) {
    requestCommandAsync(createTiltDownCommand(feedId, dist, unit));
}
function requestZoom(feedId, zoomLevel) {
    requestCommandAsync(createZoomCommand(feedId, zoomLevel));
}
function requestFocus(feedId, focusValue) {
    requestCommandAsync(createFocusCommand(feedId, focusValue));
}
function requestIris(feedId, irisValue) {
    requestCommandAsync(createIrisCommand(feedId, irisValue));
}
function requestOsd(feedId, osdValue) {
    requestCommandAsync(createOsdCommand(feedId, osdValue));
}
function requestPreset(feedId, presetNum) {
    requestCommandAsync(createPresetCommand(feedId, presetNum));
}
function requestPanPreset(feedId, panoramaNum, width, height, posX, posY) {
    requestCommandAsync(createPanPresetCommand(feedId, panoramaNum, width, height, posX, posY));
}
function requestGenericCommand(feedId, command, mode) {
    requestCommandAsync(createGenericCommand(feedId, command, mode));
}
function requestContinuousMoveCommand(feedId, paramName, paramValue) {
    requestCommandAsync(createContinuousMoveCommand(feedId, paramName, paramValue));
}
function requestFrameBufferSizeSeconds(feedId) {
    return requestCommandSync(createFrameBufferSizeSecondsCommand(feedId));
}
function requestCacheInventory(feedId, includeSnapshots, includeClipFiles, startTimeStr, endTimeStr) {
    return requestCommandSync(createCacheInventoryCommand(feedId, includeSnapshots, includeClipFiles, startTimeStr, endTimeStr));
}
function requestCommandAsync(command) {
    var oXmlHttp = createHttpRequest(command, true);
    if (oXmlHttp) {
        oXmlHttp.send(null);
    }
    return oXmlHttp;
}
function requestCommandSync(command) {
    var response = null;
    var oXmlHttp = createHttpRequest(command, false);
    if (oXmlHttp) {
        oXmlHttp.send(null);
        if (oXmlHttp.status == 200)
            response = oXmlHttp.responseText;
    }
    return response;
}
function createHttpRequest(command, async) {
    var oXmlHttp = createRequest();
    if (oXmlHttp != null) {
        oXmlHttp.open("get", command, async);
	    oXmlHttp.setRequestHeader("Cache-Control", "no-cache");
	    oXmlHttp.setRequestHeader("If-Modified-Since", "Thur, 1 Jan 1970 00:00:00 GMT");
    }
    return oXmlHttp;
}

function createPointClickCommand(feedId, width, height, pointX, pointY) {
    return ("/control/" + feedId + "/cmd=point&iheight=" + height + "&iwidth=" + width + "?" + pointX + "," + pointY);     
}
function createPanLeftCommand(feedId, dist, unit) {
    return createDirectionalControlCommand(feedId, dist, unit, "l");
}
function createPanRightCommand(feedId, dist, unit) {
    return createDirectionalControlCommand(feedId, dist, unit, "r");
}
function createTiltUpCommand(feedId, dist, unit) {
    return createDirectionalControlCommand(feedId, dist, unit, "u");
}
function createTiltDownCommand(feedId, dist, unit) {
    return createDirectionalControlCommand(feedId, dist, unit, "d");
}
function createPresetCommand(feedId, presetNum) {
	return ("/control/" + feedId + "/cmd=dir&dir=p&presetnumber=" + presetNum);
}
function createZoomCommand(feedId, zoomLevel) {
    return createDirectionalControlCommand(feedId, zoomLevel, "", "z");
}
function createFocusCommand(feedId, focusValue) {
    return ("/control/" + feedId + "/cmd=video&function=focus&focusvalue=" + focusValue);
}
function createIrisCommand(feedId, irisValue) {
    return ("/control/" + feedId + "/cmd=video&function=iris&irisValue=" + irisValue);
}
function createOsdCommand(feedId, osdValue) {
    return ("/control/" + feedId + "/cmd=video&function=osd&osdValue=" + osdValue);
}
function createPanPresetCommand(feedId, panoramaNum, width, height, posX, posY) {
    return ("/control/" + feedId + "/cmd=pan&panpresetnumber=" + panoramaNum + "&iheight=" + height + "&iwidth=" + width + "?" + posX + "," + posY);
}
function createGenericCommand(feedId, command, mode) {
    return ("/control/" + feedId + "/cmd=gen&gencommand=" + command + "&genmode=" + mode);
}
function createDirectionalControlCommand(feedId, dist, unit, dir) {
    var command = "/control/" + feedId + "/cmd=dir&dir=" + dir + "&dist=" + dist;
    if (unit.length > 0)
        command += "&unit=" + unit;
    return command;
}
function createContinuousMoveCommand(feedId, paramName, paramValue) {
    return ("/control/" + feedId + "/cmd=c&" + paramName + "=" + paramValue);
}
function createFrameBufferSizeSecondsCommand(feedId) {
    return ("/info/" + feedId + "/getvar&framebuffersizeseconds");
}
function createCacheInventoryCommand(feedId, includeSnapshots, includeClipFiles, startTimeStr, endTimeStr) {
    return ("/info/" + feedId + "/getvar&ivccacheinventory&snapshotfiles=" + includeSnapshots + "&clipfiles=" + includeClipFiles + "&starttime=" + startTimeStr + "&endtime=" + endTimeStr);
}