/* === KTY CALCULATOR JS — loaded on /crochet-calculators/ === */
(function(){
function fmt(n,d){d=d||0;if(isNaN(n)||!isFinite(n))return'0';return Number(n).toLocaleString('en-US',{minimumFractionDigits:d,maximumFractionDigits:d})}
function $(id){return document.getElementById(id)}
function val(id){var el=$(id);return el?parseFloat(el.value)||0:0}

/* 1. YARN YARDAGE CALCULATOR */
var ycPresets={blanket:{w:50,l:60},scarf:{w:8,l:60},hat:{w:20,l:8},sweater:{w:44,l:26},amigurumi:{w:6,l:10}};
var ycWeightYards={fingering:1700,sport:1400,dk:1150,worsted:850,bulky:550,superbulky:350};
window.ycSetProject=function(){
var p=$('yc-project').value,pr=ycPresets[p];
if(pr){$('yc-width').value=pr.w;$('yc-length').value=pr.l}
};
window.ycCalculate=function(){
var w=val('yc-width'),l=val('yc-length'),gauge=val('yc-gauge'),weight=$('yc-weight').value,mult=parseFloat($('yc-pattern').value)||1.0,ypg=ycWeightYards[weight]||850;
if(w<=0||l<=0||gauge<=0){$('yc-result').textContent='Please enter width, length, and gauge.';$('yc-output').textContent='';return}
var totalS=w*gauge*l*gauge,spy=gauge*36*mult,yards=totalS/spy,grams=(yards/ypg)*100;
$('yc-result').textContent='';
$('yc-output').innerHTML='<strong>'+fmt(Math.round(yards))+' yards</strong> (~'+fmt(Math.round(grams))+' g / '+fmt((grams/28.3495).toFixed(1),1)+' oz)';
};

/* 2. STITCH & ROW COUNTER */
var scC={stitch:0,row:0,repeat:0};
window.scAdjust=function(t,d){scC[t]=Math.max(0,scC[t]+d);$('sc-'+t+'-display').textContent=scC[t]};
window.scReset=function(t){scC[t]=0;$('sc-'+t+'-display').textContent='0'};

/* 3. HAT SIZING CALCULATOR */
var hcS={15:{c:14,l:4.5},16:{c:15,l:5},17:{c:16,l:5.5},18:{c:17,l:6},19:{c:18,l:6.5},20:{c:19,l:7},21:{c:20,l:7.5},22:{c:21.5,l:7.5},23:{c:23,l:8},24:{c:24.5,l:8}};
window.hcSetPreset=function(){var v=parseFloat($('hc-preset').value);if(hcS[v]){$('hc-head').value=v;$('hc-negative').value=hcS[v].c}};
window.hcCalculate=function(){
var head=val('hc-head'),neg=val('hc-negative');
if(head<=0){$('hc-result').textContent='';$('hc-output').textContent='';return}
var circ=neg>0?neg:head-(head*0.1),dia=circ/Math.PI,rounds=Math.ceil(dia/0.65),chains=Math.round(circ*2.5),yards=circ*rounds*1.2;
$('hc-result').textContent='';
$('hc-output').innerHTML='<div>Hat circumference: <strong>'+fmt(circ,1)+'"</strong></div><div>Crown diameter: <strong>'+fmt(dia,1)+'"</strong></div><div>Rounds to crown: <strong>'+rounds+'</strong></div><div>Starting chain/ring: <strong>'+chains+'</strong></div><div>Est. yarn: <strong>~'+fmt(Math.round(yards))+' yards</strong></div>';
};

/* 4. BLANKET SIZING CALCULATOR */
var bcB={lovey:{w:12,l:12},baby:{w:30,l:40},crib:{w:36,l:52},throw:{w:50,l:60},twin:{w:66,l:90},full:{w:80,l:90},queen:{w:90,l:100},king:{w:108,l:100},'california-king':{w:104,l:108}};
var bcWY={fingering:1700,sport:1400,dk:1150,worsted:850,bulky:550,superbulky:350};
window.bcCalculate=function(){
var type=$('bc-type').value,gauge=val('bc-gauge'),weight=$('bc-weight').value,ypg=bcWY[weight]||850,w,l;
if(type&&bcB[type]){w=bcB[type].w;l=bcB[type].l}else{w=0;l=0}
if(w<=0||l<=0){$('bc-result').textContent='Please select a blanket type.';$('bc-output').textContent='';return}
var area=w*l,spi=gauge>0?gauge:4,mult=1.3,yards=(w*spi*l*spi)/(spi*36*mult),grams=(yards/ypg)*100,chains=Math.round(w*spi);
$('bc-result').textContent='';
$('bc-output').innerHTML='<div>Size: <strong>'+w+'" x '+l+'"</strong> ('+fmt(area)+' sq in)</div><div>Starting chains: <strong>~'+chains+'</strong></div><div>Est. yarn: <strong>~'+fmt(Math.round(yards))+' yards</strong> (~'+fmt(Math.round(grams))+' g)</div><div>Est. skeins (worsted): <strong>~'+fmt(Math.ceil(yards/200))+'</strong></div>';
};

/* 5. STITCH & ROW CALCULATOR */
window.sruUpdateLabels=function(){
var unit=$('sru-unit').value,sz=unit==='cm'?10:4,lbl=unit==='cm'?'10cm':'4"';
if($('sru-stitch-label'))$('sru-stitch-label').textContent='Stitches per '+lbl+' swatch';
if($('sru-stitch-len-label'))$('sru-stitch-len-label').textContent='Width of piece ('+unit+')';
if($('sru-row-label'))$('sru-row-label').textContent='Rows per '+lbl+' swatch';
if($('sru-row-len-label'))$('sru-row-len-label').textContent='Length of piece ('+unit+')';
};
window.sruCalc=function(){
var unit=$('sru-unit').value,sz=unit==='cm'?10:4,spi=val('sru-spi'),sl=val('sru-stitch-len'),rpi=val('sru-rpi'),rl=val('sru-row-len');
if(spi>0&&sl>0){var s=Math.round(spi*(sl/sz));$('sru-stitch-output').innerHTML='<strong>'+fmt(s)+' stitches</strong>';$('sru-stitch-result').textContent=''}
else{$('sru-stitch-output').textContent=spi<=0?'Enter stitches per swatch':'Enter piece width';$('sru-stitch-result').textContent=''}
if(rpi>0&&rl>0){var r=Math.round(rpi*(rl/sz));$('sru-row-output').innerHTML='<strong>'+fmt(r)+' rows</strong>';$('sru-row-result').textContent=''}
else{$('sru-row-output').textContent=rpi<=0?'Enter rows per swatch':'Enter piece length';$('sru-row-result').textContent=''}
};

/* 6. PROJECT TIME ESTIMATOR */
window.teCalc=function(){
var min=val('te-minutes'),rows=val('te-rows');
if(min<=0||rows<=0){$('te-result').textContent='';$('te-output').textContent='';return}
var mpr=min/rows,rph=60/mpr;
$('te-result').textContent='';
$('te-output').innerHTML='<div>Time per row: <strong>'+fmt(mpr,1)+' min</strong></div><div>Rows per hour: <strong>~'+fmt(rph,1)+'</strong></div><div>50-row project: <strong>~'+fmt(50*mpr/60,1)+' hrs</strong></div><div>100-row project: <strong>~'+fmt(100*mpr/60,1)+' hrs</strong></div><div>200-row project: <strong>~'+fmt(200*mpr/60,1)+' hrs</strong></div>';
};

/* 7. SKEINS NEEDED CALCULATOR */
window.snCalc=function(){
var yds=val('sn-yards'),yps=val('sn-yps'),price=val('sn-price');
if(yds<=0||yps<=0){$('sn-result').textContent='';$('sn-output').textContent='';return}
var skeins=Math.ceil(yds/yps),left=(skeins*yps)-yds,cost=skeins*price;
$('sn-result').textContent='';
$('sn-output').innerHTML='<div>Skeins needed: <strong>'+skeins+'</strong></div><div>Leftover: <strong>~'+fmt(Math.round(left))+' yards</strong></div>'+(price>0?'<div>Total cost: <strong>$'+fmt(cost,2)+'</strong></div>':'');
};

/* 8. PRICING CALCULATOR — FULL */
window.pfCalc=function(){
var mat=val('pf-yarn-cost'),hrs=val('pf-hours'),rate=val('pf-rate'),fees=val('pf-fees');
var labor=hrs*rate,sub=mat+labor+fees,profit=sub*0.2,retail=sub+profit,whole=retail*0.5;
$('pf-result').textContent='';
$('pf-output').innerHTML='<div>Materials: <strong>$'+fmt(mat,2)+'</strong></div><div>Labor ('+hrs+'h @ $'+fmt(rate,2)+'): <strong>$'+fmt(labor,2)+'</strong></div><div>Fees: <strong>$'+fmt(fees,2)+'</strong></div><div>Subtotal: <strong>$'+fmt(sub,2)+'</strong></div><div>+20% profit: <strong>$'+fmt(profit,2)+'</strong></div><div style="font-size:1.15em;margin-top:6px"><strong>Retail: $'+fmt(retail,2)+'</strong></div><div>Wholesale: <strong>$'+fmt(whole,2)+'</strong></div>';
};

/* 9. PRICING CALCULATOR — QUICK */
window.pqCalc=function(){
var skeins=val('pq-skeins'),cost=val('pq-cost'),fees=val('pq-fees');
var mat=skeins*cost,base=mat*3,total=base+fees;
$('pq-result').textContent='';
$('pq-output').innerHTML='<div>Material cost: <strong>$'+fmt(mat,2)+'</strong></div><div>3x markup: <strong>$'+fmt(base,2)+'</strong></div>'+(fees>0?'<div>+ Fees: <strong>$'+fmt(fees,2)+'</strong></div>':'')+'<div style="font-size:1.15em;margin-top:6px"><strong>Suggested price: $'+fmt(total,2)+'</strong></div>';
};

/* 10. YARN WEIGHT CALCULATOR */
window.ywUpdateLabels=function(){
var unit=$('yw-unit').value;
if($('yw-proj-label'))$('yw-proj-label').textContent='Project weight ('+unit+')';
if($('yw-skein-label'))$('yw-skein-label').textContent='Full skein weight ('+unit+')';
};
window.ywCalc=function(){
var pw=val('yw-proj'),sw=val('yw-skein'),yps=val('yw-yps');
if(pw<=0||sw<=0){$('yw-result').textContent='';$('yw-output').textContent='';return}
var used=pw/sw,partial=used%1,full=Math.floor(used),yds=Math.round(used*yps),left=yps-Math.round(partial*yps);
$('yw-result').textContent='';
$('yw-output').innerHTML='<div>Skeins used: <strong>'+fmt(used,1)+'</strong> ('+full+' full + '+fmt(partial*100,0)+'% of one)</div><div>Yardage used: <strong>~'+fmt(yds)+' yards</strong></div><div>Remaining in partial: <strong>~'+fmt(left)+' yards</strong></div>';
};

/* Init */
sruUpdateLabels();ywUpdateLabels();
})();