/* Donation form · tovtorah.org/en/donate/ · English v1 (02/11/2026), built from the Hebrew v8.
   Same keys as the Hebrew page (purpose=general, beitmidrash, learning, bochurim, meals, hour; maaser is a
   separate tick), so the donors sheet and the readers see one list. Period tiles (Yissachar-Zevulun day,
   week, month, year) are priced in shekels only and are not offered here; ?purpose=yz... falls back to general.
   Currency: USD or ILS, chosen on the page. ILS is preselected when the browser clock is set to Israel.
   PayPal item_name = "Donation - Tov Torah - <intention>": the Latin token "Tov Torah" is what keeps an English
   gift out of the ten-maaser sheet and away from R' Shimon (Kaddish file 0.9). Option names Dedication / Notes
   are read by tt-donors.php. Return = /en/donate/?thanks=1&amt=<n>&p=<key>&cur=<ISO> (GTM reads cur).
   Block comments only, and never two ampersands or two pipes: WordPress breaks them. */
(function(){
  var F = document.getElementById('ttDonForm');
  if(!F){ return; }
  if(F.getAttribute('data-ready') === 'en1'){ return; }
  F.setAttribute('data-ready', 'en1');

  var PUR = { general:'Where it is needed most', beitmidrash:'Strengthening the beit midrash',
              learning:'Supporting Torah learning', bochurim:'Help for yeshiva students',
              meals:'Meals with dignity', hour:'Partnership in an hour of learning' };
  var DESC = {
    general:'The fund directs your gift to wherever the need is greatest at the time.',
    beitmidrash:'Strengthening the beit midrash and the people who learn in it.',
    learning:'Support for those who learn Torah, so they can keep sitting and learning.',
    bochurim:'Help for yeshiva students with what they are missing.',
    meals:'Meals for students whose families cannot provide them, given in a way that never embarrasses them.',
    hour:'A share in the merit of the hours of learning in the beit midrash, in any amount.'
  };
  var MAASER_TAG = 'from maaser funds';
  var DED = { none:'', iluy:'In memory of', refua:'For the recovery of', zchut:'In the merit of' };
  var NAME_LBL = { iluy:'Name of the departed', refua:'Name of the person who is ill', zchut:'Name' };
  var PARENT_LBL = { iluy:'Father’s name', refua:'Mother’s name', zchut:'Father’s or mother’s name' };
  var PREFIX = 'Donation - Tov Torah - ';
  var MAXAMT = 100000;
  var RET = 'https://tovtorah.org/en/donate/?thanks=1';
  var CUR = {
    USD:{ sym:'$', presets:[18, 36, 54, 100, 180, 360], def:54 },
    ILS:{ sym:'₪', presets:[36, 100, 180, 360, 500, 1000], def:180 }
  };

  var q = new URLSearchParams(location.search);
  function el(id){ return document.getElementById(id); }
  var amtIn = el('ttDonAmt'), out = el('ttDonOut'), fOut = el('ttDonFieldOut'), err = el('ttDonErr');
  var desc = el('ttDonDesc'), dedBox = el('ttDonDedBox'), dedRow = el('ttDonDedRow'), dedOut = el('ttDonDedOut');
  var nameIn = el('ttDonName'), parentIn = el('ttDonParent'), dateIn = el('ttDonDate'), dateWrap = el('ttDonDateWrap');
  var nameLbl = el('ttDonNameLbl'), parentLbl = el('ttDonParentLbl'), notes = el('ttDonNotes');
  var pre = el('ttDonPre'), thanks = el('ttDonThanks'), mBox = el('ttDonMaaser');
  var dock = el('ttDonDock'), dAmt = el('ttDonDockAmt'), dWhat = el('ttDonDockWhat');
  var goAmt = el('ttDonGoAmt'), curSym = el('ttDonCurSym'), lastN = null;
  function hid(n){ return F.querySelector('input[name="' + n + '"]'); }
  var hName = hid('item_name'), hNum = hid('item_number'), hCustom = hid('custom'), hRet = hid('return');
  var hCur = hid('currency_code');
  var on0 = hid('on0'), os0 = hid('os0'), on1 = hid('on1'), os1 = hid('os1');
  if(!amtIn){ return; }

  var state = { field:'general', maaser:false, ded:'none', gen:'ben', cur:'USD' };

  function money(n, c){
    var k = c ? c : state.cur;
    return CUR[k].sym + n.toLocaleString('en-US');
  }
  function clean(v){
    var s = String(v === null ? '' : v).replace(/[^0-9.]/g, '');
    var n = Math.round(parseFloat(s));
    if(isNaN(n)){ return 0; }
    if(n < 0){ return 0; }
    if(n > MAXAMT){ return MAXAMT; }
    return n;
  }
  function txt(node, max){
    if(!node){ return ''; }
    var s = String(node.value).replace(/\s+/g, ' ').replace(/^\s+/, '').replace(/\s+$/, '');
    if(s.length > max){ s = s.slice(0, max); }
    return s;
  }
  function cut(s, max){ if(s.length > max){ return s.slice(0, max); } return s; }
  function setOn(sel, node){
    var a = F.querySelectorAll(sel), i;
    for(i = 0; i < a.length; i++){ a[i].classList.remove('is-on'); a[i].setAttribute('aria-pressed', 'false'); }
    if(node){ node.classList.add('is-on'); node.setAttribute('aria-pressed', 'true'); }
  }
  function chipFor(sel, attr, val){
    var a = F.querySelectorAll(sel), i;
    for(i = 0; i < a.length; i++){ if(a[i].getAttribute(attr) === String(val)){ return a[i]; } }
    return null;
  }
  function setOpt(nm, vl, val){
    if(!nm){ return; }
    if(val){ nm.disabled = false; vl.disabled = false; vl.value = val; }
    else { nm.disabled = true; vl.disabled = true; vl.value = ''; }
  }

  /* the key recorded with the donation and sent to measurement (same keys as the Hebrew page) */
  function key(){
    if(!state.maaser){ return state.field; }
    if(state.field === 'general'){ return 'maaser'; }
    return state.field + '-maaser';
  }
  function label(){
    var s = PUR[state.field];
    if(state.maaser){ s = s + ', ' + MAASER_TAG; }
    return s;
  }

  function dedText(){
    if(state.ded === 'none'){ return ''; }
    var n = txt(nameIn, 60);
    if(!n){ return ''; }
    var s = DED[state.ded] + ' ' + n;
    var p = txt(parentIn, 60);
    if(p){ s = s + ' ' + state.gen + ' ' + p; }
    if(state.ded === 'iluy'){
      var d = txt(dateIn, 40);
      if(d){ s = s + ', ' + d; }
    }
    return cut(s, 190);
  }

  /* the preset amount chips follow the currency */
  function paintPresets(){
    var a = F.querySelectorAll('.ttm-chip[data-amt]'), i, p = CUR[state.cur].presets;
    for(i = 0; i < a.length; i++){
      if(i < p.length){
        a[i].setAttribute('data-amt', String(p[i]));
        a[i].textContent = money(p[i]);
        a[i].hidden = false;
      } else {
        a[i].hidden = true;
      }
    }
    if(curSym){ curSym.textContent = CUR[state.cur].sym; }
    if(hCur){ hCur.value = state.cur; }
  }

  function paintDock(n){
    if(!dock){ return; }
    if(dAmt){ dAmt.textContent = money(n); }
    var w = label();
    if(state.ded !== 'none'){ w = w + ' · ' + DED[state.ded]; }
    if(dWhat){ dWhat.textContent = w; }
  }

  function paint(){
    var n = clean(amtIn.value);
    if(out){ out.textContent = money(n); }
    if(goAmt){ goAmt.textContent = n > 0 ? money(n) : ''; }
    if(out){ if(lastN !== null){ if(n !== lastN){ out.classList.remove('is-pulse'); void out.offsetWidth; out.classList.add('is-pulse'); } } }
    lastN = n;
    setOn('.ttm-chip[data-amt]', chipFor('.ttm-chip[data-amt]', 'data-amt', n));
    if(fOut){ fOut.textContent = label(); }
    if(desc){ desc.textContent = DESC[state.field]; }
    if(mBox){ mBox.checked = state.maaser; }
    if(hNum){ hNum.value = key(); }
    if(hName){ hName.value = cut(PREFIX + label(), 127); }
    var dt = dedText();
    if(dedRow){ dedRow.hidden = dt === ''; }
    if(dedOut){ dedOut.textContent = dt; }
    paintDock(n);
    if(n > 0){ if(err){ err.hidden = true; } }
  }

  function pickCur(c, keepAmt){
    if(!CUR[c]){ return; }
    var wasDefault = clean(amtIn.value) === CUR[state.cur].def;
    state.cur = c;
    setOn('.ttm-chip[data-cur]', chipFor('.ttm-chip[data-cur]', 'data-cur', c));
    paintPresets();
    if(!keepAmt){ if(wasDefault){ amtIn.value = String(CUR[c].def); } }
    paint();
  }

  function pickField(k){
    if(k === 'maaser'){ state.maaser = true; k = 'general'; }
    if(!PUR[k]){ return; }
    state.field = k;
    setOn('.ttm-chip[data-field]', chipFor('.ttm-chip[data-field]', 'data-field', k));
    paint();
  }

  function pickDed(k){
    if(!(k in DED)){ return; }
    state.ded = k;
    setOn('.ttm-chip[data-ded]', chipFor('.ttm-chip[data-ded]', 'data-ded', k));
    if(dedBox){ dedBox.hidden = k === 'none'; }
    if(k !== 'none'){
      if(nameLbl){ nameLbl.textContent = NAME_LBL[k]; }
      if(parentLbl){ parentLbl.textContent = PARENT_LBL[k] + ' (optional)'; }
      if(dateWrap){ dateWrap.hidden = k !== 'iluy'; }
    }
    paint();
  }

  function pickGen(g){
    state.gen = g;
    setOn('.ttm-chip[data-gen]', chipFor('.ttm-chip[data-gen]', 'data-gen', g));
    paint();
  }

  var a = F.querySelectorAll('.ttm-chip[data-amt]'), i;
  for(i = 0; i < a.length; i++){
    a[i].addEventListener('click', function(){ amtIn.value = this.getAttribute('data-amt'); paint(); });
  }
  a = F.querySelectorAll('.ttm-chip[data-cur]');
  for(i = 0; i < a.length; i++){
    a[i].addEventListener('click', function(){ pickCur(this.getAttribute('data-cur'), false); });
  }
  a = F.querySelectorAll('.ttm-chip[data-field]');
  for(i = 0; i < a.length; i++){
    a[i].addEventListener('click', function(){ pickField(this.getAttribute('data-field')); });
  }
  a = F.querySelectorAll('.ttm-chip[data-ded]');
  for(i = 0; i < a.length; i++){
    a[i].addEventListener('click', function(){ pickDed(this.getAttribute('data-ded')); });
  }
  a = F.querySelectorAll('.ttm-chip[data-gen]');
  for(i = 0; i < a.length; i++){
    a[i].addEventListener('click', function(){ pickGen(this.getAttribute('data-gen')); });
  }
  if(mBox){ mBox.addEventListener('change', function(){ state.maaser = mBox.checked; paint(); }); }
  amtIn.addEventListener('input', paint);
  amtIn.addEventListener('change', paint);
  var live = [nameIn, parentIn, dateIn];
  for(i = 0; i < live.length; i++){ if(live[i]){ live[i].addEventListener('input', paint); } }

  /* ---------- prefill from the URL ---------- */
  var src = String(q.get('src') === null ? '' : q.get('src')).toLowerCase().replace(/[^a-z0-9-]/g, '').slice(0, 40);
  if(!src){ src = 'en-donate'; }
  if(hCustom){ hCustom.value = src; }

  var startCur = 'USD';
  try {
    var tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
    if(tz === 'Asia/Jerusalem'){ startCur = 'ILS'; }
    if(tz === 'Asia/Tel_Aviv'){ startCur = 'ILS'; }
  } catch(e){}
  var qc = String(q.get('cur') === null ? '' : q.get('cur')).toUpperCase();
  if(CUR[qc]){ startCur = qc; }
  state.cur = startCur;
  setOn('.ttm-chip[data-cur]', chipFor('.ttm-chip[data-cur]', 'data-cur', startCur));
  paintPresets();

  var filled = false;
  var pp = q.get('purpose');
  if(pp){
    filled = true;
    if(pp === 'maaser'){ state.maaser = true; state.field = 'general'; }
    else {
      if(PUR[pp]){ state.field = pp; }
      else { state.field = 'general'; }
    }
  }
  setOn('.ttm-chip[data-field]', chipFor('.ttm-chip[data-field]', 'data-field', state.field));
  var pa = clean(q.get('amount'));
  if(pa > 0){ amtIn.value = String(pa); filled = true; }
  else { amtIn.value = String(CUR[state.cur].def); }
  setOn('.ttm-chip[data-ded]', chipFor('.ttm-chip[data-ded]', 'data-ded', 'none'));
  setOn('.ttm-chip[data-gen]', chipFor('.ttm-chip[data-gen]', 'data-gen', 'ben'));
  setOpt(on0, os0, ''); setOpt(on1, os1, '');
  paint();

  /* ---------- thank-you state, after PayPal returns ----------
     PayPal appends the payer's name, email and phone to the URL. tt-tracking.php removes them at the top
     of the page, before any measurement; only the confirmation number, status and gross reach window.ttPayPal. */
  function showThanks(){
    if(!thanks){ return; }
    var pp = window.ttPayPal;
    if(!pp){ pp = { tx:q.get('tx'), st:q.get('st'), gross:q.get('mc_gross') }; }
    var c = String(q.get('cur') === null ? '' : q.get('cur')).toUpperCase();
    if(!CUR[c]){ c = 'USD'; }
    var n = clean(q.get('amt'));
    if(!(n > 0)){ n = clean(pp.gross); }
    var k = String(q.get('p') === null ? '' : q.get('p')).replace(/[^a-z-]/g, '');
    var m = false;
    if(k === 'maaser'){ k = 'general'; m = true; }
    if(/-maaser$/.test(k)){ k = k.replace(/-maaser$/, ''); m = true; }
    if(!PUR[k]){ k = 'general'; }
    var what = PUR[k];
    if(m){ what = what + ', ' + MAASER_TAG; }
    var aOut = el('ttThxAmt'), wOut = el('ttThxWhat'), sOut = el('ttThxState');
    var rRow = el('ttThxRefRow'), rOut = el('ttThxRef'), dot = el('ttThxDot');
    if(n > 0){ if(aOut){ aOut.textContent = money(n, c); } }
    else { if(aOut){ aOut.hidden = true; } if(dot){ dot.hidden = true; } }
    if(wOut){ wOut.textContent = what; }
    var st = pp.st ? String(pp.st).toLowerCase() : '';
    if(st === 'pending'){ if(sOut){ sOut.textContent = 'Your donation reached PayPal and is awaiting confirmation'; } }
    var tx = pp.tx ? String(pp.tx).replace(/[^A-Za-z0-9]/g, '').slice(0, 24) : '';
    if(tx.length > 7){
      if(rOut){ rOut.textContent = tx; }
      if(rRow){ rRow.hidden = false; }
    }
    var hero = document.querySelector('.tt-hero--page');
    if(hero){ hero.style.setProperty('display', 'none', 'important'); }
    F.style.setProperty('display', 'none', 'important');
    if(pre){ pre.hidden = true; }
    var hs = document.querySelectorAll('[data-dn-thanks-hide]'), j;
    for(j = 0; j < hs.length; j++){ hs[j].style.setProperty('display', 'none', 'important'); }
    if(dock){ dock.style.setProperty('display', 'none', 'important'); }
    thanks.hidden = false;
    document.title = 'Thank you for your donation | Tov Torah';
    window.scrollTo(0, 0);
    try { thanks.focus({ preventScroll:true }); } catch(e){}
  }

  if(q.get('thanks') === '1'){
    showThanks();
    filled = false;
  }
  if(filled){ if(pre){ pre.hidden = false; } }

  /* ---------- the bottom dock on phones and tablets (same behaviour as the Hebrew page) ---------- */
  var resBox = F.querySelector('.ttm-result');
  var mq = window.matchMedia ? window.matchMedia('(max-width: 1023px)') : null;
  var vis = { form:false, res:false, typing:false };
  function typingIn(t){
    if(!t){ return false; }
    if(!F.contains(t)){ return false; }
    if(t.tagName === 'TEXTAREA'){ return true; }
    if(t.tagName === 'INPUT'){ if(t.type !== 'checkbox'){ return true; } }
    return false;
  }
  function dockOn(){
    if(!mq){ return false; }
    if(!mq.matches){ return false; }
    if(!vis.form){ return false; }
    if(vis.res){ return false; }
    if(vis.typing){ return false; }
    return true;
  }
  function showDock(){
    if(!dock){ return; }
    var on = dockOn();
    dock.classList.toggle('is-on', on);
    document.documentElement.classList.toggle('tt-dock-on', on);
  }
  if(dock){
    if('IntersectionObserver' in window){
      new IntersectionObserver(function(es){ vis.form = es[es.length - 1].isIntersecting; showDock(); },
        { rootMargin: '0px 0px -30% 0px' }).observe(F);
      if(resBox){
        new IntersectionObserver(function(es){ vis.res = es[es.length - 1].isIntersecting; showDock(); },
          { rootMargin: '0px 0px -110px 0px' }).observe(resBox);
      }
    }
    F.addEventListener('focusin', function(e){ vis.typing = typingIn(e.target); showDock(); });
    F.addEventListener('focusout', function(){
      setTimeout(function(){ vis.typing = typingIn(document.activeElement); showDock(); }, 80);
    });
    if(mq){
      if(mq.addEventListener){ mq.addEventListener('change', showDock); }
      else { if(mq.addListener){ mq.addListener(showDock); } }
    }
  }

  F.addEventListener('submit', function(e){
    var n = clean(amtIn.value);
    if(!(n > 0)){
      e.preventDefault();
      if(err){ err.hidden = false; }
      amtIn.focus();
      return;
    }
    amtIn.value = String(n);
    paint();
    if(hCur){ hCur.value = state.cur; }
    setOpt(on0, os0, dedText());
    setOpt(on1, os1, txt(notes, 190));
    if(hRet){ hRet.value = RET + '&amt=' + n + '&p=' + key() + '&cur=' + state.cur; }
  });
})();