/* ai_vs_irctc.js — irctc1 truth vs OpenAI, with origin->boarding day-offset correction.
   irctc1 reports running days AT the from-station. OpenAI reports ORIGIN days.
   We shift OpenAI's answer by the train's stored day_offset at the from-station,
   then compare. Trains not in our timetable (offset unknown) are shown but not scored. */
(function () {
  var ORDER = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
  var IDX = { Mon: 0, Tue: 1, Wed: 2, Thu: 3, Fri: 4, Sat: 5, Sun: 6 };

  function esc(s) {
    return String(s == null ? '' : s).replace(/[&<>"]/g, function (c) {
      return { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;' }[c];
    });
  }
  function shiftDays(days, off) {
    off = ((off % 7) + 7) % 7;
    var set = {};
    days.forEach(function (d) { if (d in IDX) set[ORDER[(IDX[d] + off) % 7]] = 1; });
    return ORDER.filter(function (d) { return set[d]; });
  }

  document.addEventListener('DOMContentLoaded', function () {
    var form = document.getElementById('cmp-form');
    if (!form) return;
    form.addEventListener('submit', function (ev) {
      ev.preventDefault();
      var btn = document.getElementById('cmp-run');
      var orig = btn.textContent;
      var csrf = form.querySelector('input[name=csrf]').value;
      var model = (document.getElementById('model').value || '').trim() || 'gpt-5.5';
      var max = parseInt(document.getElementById('max').value, 10) || 6;
      var tbody = document.getElementById('cmp-rows');
      var summary = document.getElementById('cmp-summary');
      var box = document.getElementById('cmp-results');

      tbody.innerHTML = ''; summary.innerHTML = ''; box.style.display = 'block';
      btn.disabled = true; btn.textContent = 'Fetching irctc1 truth…';

      var p = new URLSearchParams({
        action: 'irctc', csrf: csrf,
        from: document.getElementById('from').value,
        to: document.getElementById('to').value,
        date: document.getElementById('date').value
      });

      fetch(window.location.pathname, { method: 'POST', headers: { 'X-Requested-With': 'XMLHttpRequest' }, body: p })
        .then(function (r) { if (!r.ok) throw new Error('irctc HTTP ' + r.status); return r.json(); })
        .then(function (data) {
          if (data.err) throw new Error(data.err);
          var trains = (data.trains || []).slice(0, max);
          if (!trains.length) { summary.innerHTML = errBox('irctc1 returned no trains for this route/date.'); reset(); return; }

          var rows = [];
          trains.forEach(function (t) {
            var tr = document.createElement('tr');
            tr.style.borderBottom = '1px solid #eee'; tr.style.verticalAlign = 'top';
            tr.innerHTML = '<td style="padding:8px;font-weight:600">' + esc(t.tn) + '</td>'
              + '<td class="muted" style="font-size:.85rem">' + esc(t.name) + '</td>'
              + '<td>' + esc((t.days || []).join(',') || '(none)') + '</td>'
              + '<td colspan="4" class="muted">…querying OpenAI…</td>';
            tbody.appendChild(tr);
            rows.push({ t: t, tr: tr });
          });

          var i = 0, pass = 0, fail = 0, errc = 0, judged = 0;
          function next() {
            if (i >= rows.length) {
              var cls = (fail > 0 || errc > 0) ? 'flash-error' : 'flash-info';
              var m = 'PASS ' + pass + ' \u00b7 FAIL ' + fail + ' \u00b7 ERROR ' + errc + '. ';
              if (judged === 0) m += 'Nothing scored (no truth or no offset data).';
              else if (fail > 0) m += 'After offset correction, OpenAI still disagreed with irctc1 on ' + fail + ' of ' + judged + ' scored train(s) — those are real differences. Per your rule, irctc1 wins.';
              else if (errc > 0) m += 'OpenAI matched on all ' + judged + ' scored, but some calls errored/timed out — rerun those (try gpt-5.4-mini) before concluding.';
              else m += 'OpenAI matched irctc1 on all ' + judged + ' scored (offset-corrected). Widen across routes and include obscure/weekly trains before trusting it.';
              summary.innerHTML = '<div class="flash ' + cls + '" style="margin-top:16px">' + m + '</div>';
              reset(); return;
            }
            var row = rows[i++]; var t = row.t; var tr = row.tr;
            var truth = (t.days || []).join(',');
            btn.textContent = 'OpenAI: ' + t.tn + ' (' + i + '/' + rows.length + ')…';
            var b = new URLSearchParams({ action: 'one', csrf: csrf, train: t.tn, model: model });
            fetch(window.location.pathname, { method: 'POST', headers: { 'X-Requested-With': 'XMLHttpRequest' }, body: b })
              .then(function (r) {
                if (!r.ok) { var x = r.status === 504 ? ' (gateway timeout — try gpt-5.4-mini)' : ''; throw new Error('HTTP ' + r.status + x); }
                return r.json();
              })
              .then(function (d) {
                if (d.err) { errc++; fillErr(tr, d.err); return; }
                var originDays = d.got || [];
                var off = t.offset;
                var oCell, match;
                if (off === null || off === undefined) {
                  oCell = esc(originDays.join(',') || '(none)') + ' <span class="muted">(origin; no offset data — not scored)</span>';
                  match = null;
                } else {
                  var shifted = off === 0 ? originDays : shiftDays(originDays, off);
                  oCell = (off === 0)
                    ? esc(originDays.join(',') || '(none)')
                    : esc(originDays.join(',') || '(none)') + ' <span class="muted">\u2192 ' + esc(shifted.join(',') || '(none)') + ' (off +' + off + ')</span>';
                  match = truth === '' ? null : (shifted.join(',') === truth);
                }
                if (match === true) pass++; else if (match === false) fail++;
                if (match !== null) judged++;
                fillResult(tr, oCell, match, d.conf, d.src);
              })
              .catch(function (e) { errc++; fillErr(tr, e.message); })
              .then(next);
          }
          next();
        })
        .catch(function (e) { summary.innerHTML = errBox(e.message); reset(); });

      function reset() { btn.disabled = false; btn.textContent = orig; }
      function errBox(msg) { return '<div class="flash flash-error" style="margin-top:16px">' + esc(msg) + '</div>'; }
      function fillResult(tr, openaiHtml, match, conf, src) {
        var color = match === true ? '#197b3a' : (match === false ? '#c0392b' : '#888');
        var label = match === true ? 'PASS' : (match === false ? 'FAIL' : '—');
        while (tr.children.length > 3) tr.removeChild(tr.children[3]);
        tr.insertAdjacentHTML('beforeend',
          '<td>' + openaiHtml + '</td>'
          + '<td style="font-weight:700;color:' + color + '">' + label + '</td>'
          + '<td class="muted">' + esc(conf) + '</td>'
          + '<td class="muted" style="font-size:.8rem;max-width:200px;word-break:break-all">' + esc(src) + '</td>');
      }
      function fillErr(tr, msg) {
        while (tr.children.length > 3) tr.removeChild(tr.children[3]);
        tr.insertAdjacentHTML('beforeend', '<td colspan="4" class="muted">\u26a0 ' + esc(msg) + '</td>');
      }
    });
  });
})();