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#target illustrator

if (app.documents.length === 0) {
    alert("No document open");
    exit();
}

var doc = app.activeDocument;

// ================= UI =================
var win = new Window("dialog", "CTP Optimizer v3.2 – Mixed Calculation");
win.alignChildren = "fill";

// Calculation Mode
var pMode = win.add("panel", undefined, "Calculation Mode");
var modeDesign = pMode.add("radiobutton", undefined, "Design Object Mode");
var modeTag    = pMode.add("radiobutton", undefined, "Tag Size Mode");
modeDesign.value = true;

// Sheet Capacity Option
var pCap = win.add("panel", undefined, "Sheet Capacity");
var capManual = pCap.add("radiobutton", undefined, "Manual");
var capAuto   = pCap.add("radiobutton", undefined, "Auto (from tag size)");
capAuto.value = true;
pCap.add("statictext", undefined, "Capacity:");
var capInput = pCap.add("edittext", undefined, "12");
capInput.characters = 5;

// Sheet / Tag Panel
var pSheet = win.add("panel", undefined, "Sheet / Tag Size");
var sheetInput = pSheet.add("edittext", undefined, "11x14 in");
sheetInput.characters = 15;
var tagWidth = pSheet.add("edittext", undefined, "4");
tagWidth.characters = 5;
var tagHeight= pSheet.add("edittext", undefined, "6");
tagHeight.characters = 5;
var unitDrop = pSheet.add("dropdownlist", undefined, ["mm","cm","in"]);
unitDrop.selection = 0;

// Gap & Margin
var pMargin = win.add("panel", undefined, "Margins & Gap (mm)");
pMargin.orientation = "grid";
pMargin.add("statictext", undefined, "Left"); var mL = pMargin.add("edittext", undefined, "10");
pMargin.add("statictext", undefined, "Right"); var mR = pMargin.add("edittext", undefined, "10");
pMargin.add("statictext", undefined, "Top"); var mT = pMargin.add("edittext", undefined, "10");
pMargin.add("statictext", undefined, "Bottom"); var mB = pMargin.add("edittext", undefined, "10");
pMargin.add("statictext", undefined, "Gap"); var gapInput = pMargin.add("edittext", undefined, "5");

// Quantity Input
var pQty = win.add("panel", undefined, "Mixed Quantity (Size-Qty)");
var qtyInput = pQty.add("edittext", undefined,
"XS-500\nM-800\nL-500\nXL-200\nXXL-100",{multiline:true});
qtyInput.preferredSize.height = 120;

// Result Panel
var pRes = win.add("panel", undefined, "Result");
var resTxt = pRes.add("edittext", undefined, "", {multiline:true, readonly:true});
resTxt.preferredSize.height = 220;

// Buttons
var btns = win.add("group");
var calcBtn = btns.add("button", undefined, "Calculate");
var copyBtn = btns.add("button", undefined, "Copy");
var pdfBtn  = btns.add("button", undefined, "Export PDF");
btns.add("button", undefined, "Close", {name:"cancel"});

// ================= FUNCTIONS =================
function parseSheet(str){
    var unit = "in";
    if (/mm/i.test(str)) unit="mm";
    if (/cm/i.test(str)) unit="cm";
    var n = str.match(/([\d\.]+)\s*x\s*([\d\.]+)/i);
    if(!n) return null;
    var w = parseFloat(n[1]); var h = parseFloat(n[2]);
    if(unit=="mm"){ w*=2.8346; h*=2.8346; }
    else if(unit=="cm"){ w*=28.346; h*=28.346; }
    else{ w*=72; h*=72; }
    return {w:w,h:h};
}

function tagSizeToPt(w,h,unit){
    if(unit=="mm"){ return {w:w*2.8346,h:h*2.8346}; }
    else if(unit=="cm"){ return {w:w*28.346,h:h*28.346}; }
    else{ return {w:w*72,h:h*72}; }
}

// ================= LOGIC =================
calcBtn.onClick=function(){
    var sheet=parseSheet(sheetInput.text);
    if(!sheet){ alert("Invalid sheet"); return; }
    var gap=parseFloat(gapInput.text)*2.8346;
    var ml=parseFloat(mL.text)*2.8346;
    var mr=parseFloat(mR.text)*2.8346;
    var mt=parseFloat(mT.text)*2.8346;
    var mb=parseFloat(mB.text)*2.8346;

var usableW=sheet.w-ml-mr; var usableH=sheet.h-mt-mb;
    var capacity=0;

if(capManual.value){
        capacity=parseInt(capInput.text,10);
        if(capacity<=0){ alert("Enter valid manual capacity"); return; }
    }else{
        // Auto capacity
        var tSize=tagSizeToPt(parseFloat(tagWidth.text),parseFloat(tagHeight.text),unitDrop.selection.text);
        var col=Math.floor((usableW+gap)/(tSize.w+gap));
        var row=Math.floor((usableH+gap)/(tSize.h+gap));
        capacity=col*row;
        if(capacity<=0){ alert("Tag too big for sheet"); return; }
    }

// Parse quantity
    var lines=qtyInput.text.split("\n");
    var qtyMap={}; var totalQty=0;
    for(var i=0;i<lines.length;i++){
        if(!lines[i]) continue;
        var p=lines[i].split("-");
        if(p.length!=2) continue;
        var k=p[0]; var q=parseInt(p[1],10);
        qtyMap[k]=q; totalQty+=q;
    }

var sheets=buildMix(JSON.parse(JSON.stringify(qtyMap)),capacity);

var out="Sheet Capacity : "+capacity+" pcs\n\n";
    for(var s=0;s<sheets.length;s++){
        out+="Sheet "+(s+1)+": ";
        var line=[]; for(var k in sheets[s]) line.push(k+"-"+sheets[s][k]);
        out+=line.join(" | ")+"\n";
    }

var usedQty=0;
    for(var k in qtyMap) usedQty+=qtyMap[k];
    out+="\nTotal Sheets : "+sheets.length+"\n";
    var totalFilled=sheets.length*capacity;
    var waste=Math.max(0,totalFilled-totalQty);
    out+="Waste : "+waste+" pcs ("+Math.round(waste/totalQty*100)+"%)\n";
    resTxt.text=out;
};

// ================= COPY =================
copyBtn.onClick=function(){
    if(!resTxt.text) return;
    app.clipboard=resTxt.text;
    alert("Result copied to clipboard");
};

// ================= PDF EXPORT =================
pdfBtn.onClick=function(){
    if(!resTxt.text) return;
    var rpt=app.documents.add(DocumentColorSpace.CMYK,595,842);
    var tf=rpt.textFrames.add();
    tf.contents=resTxt.text;
    tf.left=40; tf.top=800; tf.width=520; tf.height=760;
    var f=File.saveDialog("Save CTP Report PDF");
    if(!f) return;
    var opt=new PDFSaveOptions();
    rpt.saveAs(f,opt); rpt.close(SaveOptions.DONOTSAVECHANGES);
};

win.center(); win.show();

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