cTID = function(s) { return app.charIDToTypeID(s); };
sTID = function(s) { return app.stringIDToTypeID(s); };

// Function to get the count of layer groups starting with "Post "
function getPostLayerGroupCount() {
    var PostGroupCount = 0;
    var layers = app.activeDocument.layers;
    for (var i = 0; i < layers.length; i++) {
        if (layers[i].typename == "LayerSet" && layers[i].name.indexOf("Post ") === 0) {
            PostGroupCount++;
        }
    }
    return PostGroupCount;
}

// Function to get the file size
function getFileSize() {
    var width = app.activeDocument.width.value;
    var height = app.activeDocument.height.value;
    return {width: width, height: height};
}

// Function to create artboards
function createArtboards(PostGroupCount, fileSize) {
    var interval = 100; // Interval between artboards
    var startX = 0;
    var startY = 0;
    for (var i = 0; i < PostGroupCount; i++) {
        var name = "Artboard " + (i + 1);
        var left = startX;
        var top = startY;
        var right = startX + fileSize.width;
        var bottom = startY + fileSize.height;
        createArtboard(top, left, bottom, right, name);
        startX += fileSize.width + interval; // Update the starting position for the next artboard
    }
}

// Function to create a single artboard
function createArtboard(top, left, bottom, right, name) {
    var desc1 = new ActionDescriptor();
    var ref1 = new ActionReference();
    ref1.putClass(sTID("artboardSection"));
    desc1.putReference(cTID('null'), ref1);
    desc1.putString(cTID('Nm  '), name);
    var desc2 = new ActionDescriptor();
    desc2.putDouble(cTID('Top '), top);
    desc2.putDouble(cTID('Left'), left);
    desc2.putDouble(cTID('Btom'), bottom);
    desc2.putDouble(cTID('Rght'), right);
    desc1.putObject(sTID("artboardRect"), sTID("classFloatRect"), desc2);
    executeAction(sTID('make'), desc1, DialogModes.NO);
}

// Function to move "Post " layer groups to artboards
function movePostGroupToArtboard(PostIndex, artboardIndex) {
    var doc = app.activeDocument;
    var PostGroupName = "Post " + PostIndex;
    var sourceArtboard = doc.layerSets.getByName("Artboard 1");
    var destinationArtboard = doc.layerSets.getByName("Artboard " + artboardIndex);
    if (sourceArtboard && destinationArtboard) {
        var layers = sourceArtboard.layers;
        for (var i = 0; i < layers.length; i++) {
            if (layers[i].typename == "LayerSet" && layers[i].name == PostGroupName) {
                var PostGroup = layers[i];
                PostGroup.move(destinationArtboard, ElementPlacement.INSIDE);
                break;
            }
        }
    }
}

// Main function
function main() {
    var PostGroupCount = getPostLayerGroupCount();
    if (PostGroupCount > 0) {
        var fileSize = getFileSize();
        createArtboards(PostGroupCount, fileSize);
        
        // Move each "Post " layer group to its respective artboard
        for (var i = 2; i <= PostGroupCount + 1; i++) { // Start moving from "Post 2" to "Artboard 2"
            movePostGroupToArtboard(i, i);
        }
    }
}

// Execute the main function
main();