/*
 * /post journal form bundle — page-scoped (loaded only by post-form.html.twig).
 * Kept out of the global main.js so EasyMDE (+ the U4 HEIC converter, lazy-loaded)
 * never ship on any other page. Built as ESM with code-splitting so the heic-to
 * dynamic import becomes a separately-fetched chunk (see package.json / KTD2).
 *
 * Every init function presence-guards its own DOM, mirroring main.js's
 * initTripStats pattern, so this is a no-op if an element is absent.
 */
import EasyMDE from 'easymde';
import Sortable from 'sortablejs';
import 'easymde/dist/easymde.min.css';
import './post-form.css';
import { apiSend, apiErrorMsg } from './api-utils.js';

/* ── Markdown editor (EasyMDE) ───────────────────────────── */
function initEditor() {
    var textarea = document.querySelector('textarea[name="data[content]"]');
    if (!textarea) return null;

    var editor = new EasyMDE({
        element: textarea,
        spellChecker: false,
        autoDownloadFontAwesome: false, // toolbar glyphs come from post-form.css, no FA CDN
        status: false,
        placeholder: 'What happened today?',
        minHeight: '180px',
        // Minimal toolbar; custom classNames drive the CSS glyphs in post-form.css.
        toolbar: [
            { name: 'bold', action: EasyMDE.toggleBold, className: 'mde-btn mde-bold', title: 'Bold' },
            { name: 'italic', action: EasyMDE.toggleItalic, className: 'mde-btn mde-italic', title: 'Italic' },
            { name: 'unordered-list', action: EasyMDE.toggleUnorderedList, className: 'mde-btn mde-ul', title: 'Bulleted list' },
            { name: 'link', action: EasyMDE.drawLink, className: 'mde-btn mde-link', title: 'Insert link' },
            '|',
            { name: 'preview', action: EasyMDE.togglePreview, className: 'mde-btn mde-preview', title: 'Toggle preview' },
        ],
    });

    // KTD3 / R15: keep the underlying <textarea> in sync with the editor so the
    // form's custom required-field validator (which reads [name="data[content]"])
    // and the submitted payload both see the live value.
    editor.codemirror.on('change', function () { editor.codemirror.save(); });

    var form = textarea.closest('form');
    if (form) {
        // Capture phase fires before the inline bubble-phase validator, so the
        // textarea already holds the current value when validation reads it.
        form.addEventListener('submit', function () { editor.codemirror.save(); }, true);
    }

    return editor;
}

/* ── Photo picker + client-side HEIC→JPEG (U4) ───────────────
 * We replaced Grav's managed filepond field with a plain, controlled picker
 * (see the `photos` field template) because filepond instant-uploads each file
 * the moment it is added and its FilePond.create config is not ours to hook —
 * so HEIC could never be converted before upload. Here we own the flow: sniff,
 * lazy-convert HEIC, then POST each web-safe JPEG to Grav's AJAX file-upload
 * route (into the form flash, exactly as filepond's server.process did) so
 * add-page-by-form's copyFiles() picks them up on submit.
 */

// ISO-BMFF 'ftyp' brands that indicate HEIC/HEIF. Sniffed from bytes, never
// from the filename/MIME (R16) — iOS sometimes hands us .heic with an image/*
// MIME, and a renamed .jpg can still be HEIC underneath.
var HEIC_BRANDS = ['heic', 'heix', 'heif', 'hevc', 'hevx', 'mif1', 'msf1', 'heim', 'heis', 'hevm', 'hevs'];

function looksLikeHeic(file) {
    return file.slice(0, 64).arrayBuffer().then(function (buf) {
        var b = new Uint8Array(buf);
        if (b.length < 12) return false;
        // bytes 4..8 must be the 'ftyp' box type
        if (String.fromCharCode(b[4], b[5], b[6], b[7]) !== 'ftyp') return false;
        // scan major brand + compatible brands (4-byte codes from offset 8)
        var brands = '';
        for (var i = 8; i + 4 <= b.length; i += 4) {
            brands += String.fromCharCode(b[i], b[i + 1], b[i + 2], b[i + 3]).toLowerCase();
        }
        return HEIC_BRANDS.some(function (brand) { return brands.indexOf(brand) !== -1; });
    }).catch(function () { return false; });
}

function slugifyJpegName(name) {
    var base = String(name || 'photo').replace(/\.[^.]+$/, '');
    base = base.toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/^-+|-+$/g, '');
    return (base || 'photo') + '.jpg';
}

// Insert (once) a status line just after the FilePond field for conversion
// feedback, returning it. FilePond owns the per-thumbnail chrome; this line
// carries the pre-FilePond "converting…" / error state.
function photoStatusEl() {
    var root = document.querySelector('.filepond-root, .form-input-file');
    if (!root || !root.parentNode) return null;
    var el = root.parentNode.querySelector('.photo-convert-status');
    if (!el) {
        el = document.createElement('p');
        el.className = 'photo-convert-status form-status';
        el.setAttribute('role', 'status');
        root.parentNode.insertBefore(el, root.nextSibling);
    }
    return el;
}

// Wrap the photo picker in a native <details> so it can auto-collapse to a
// live summary bar once uploads settle (issue #3: thumbnails otherwise crowd
// the writing area). The field's own <label> is hidden — the <summary> becomes
// the section header. Returns { details, summary } or null when no picker.
function buildPhotoCollapse() {
    var root = document.querySelector('.filepond-root, .form-input-file');
    if (!root) return null;
    var wrapper = root.closest('.form-field');
    if (!wrapper) return null;

    // Grav wraps the field label in a .form-label div (not a bare <label>);
    // hide it so the <summary> is the section's only header.
    var fieldLabel = wrapper.querySelector('.form-label');

    var details = document.createElement('details');
    details.className = 'photos-collapse';
    details.open = true;
    var summary = document.createElement('summary');
    summary.className = 'photos-collapse__summary';
    summary.textContent = 'Photos (1–6)';
    details.appendChild(summary);

    // Relocate the existing control (+ label/status) into the details body.
    while (wrapper.firstChild) details.appendChild(wrapper.firstChild);
    wrapper.appendChild(details);
    if (fieldLabel) fieldLabel.style.display = 'none';

    return { details: details, summary: summary };
}

function initPhotoConversion() {
    var form = document.querySelector('form[name="new-entry"]');
    if (!form) return;

    // Edit mode runs its OWN live photo editor (initPhotoEditor) against the media
    // API and decommissions FilePond entirely — no collapse, no HEIC-into-FilePond
    // hooks, and crucially no `photo_order` submit handler. A stale photo_order
    // posted on text Save would drive cache-on-save.reconcilePhotos() →
    // deleteUnlistedImages() and silently delete any photo added live after the
    // page opened. Skipping the wiring here (FilePond left unpopulated) means no
    // manifest is posted, so the live-managed folder is left untouched on Save.
    if (EDIT_MODE) return;

    var converting = 0; // HEIC conversions in flight (before FilePond) — gates Submit
    var collapse = buildPhotoCollapse();
    var orderPond = null; // set when the managed FilePond instance is found

    // FilePond does NOT re-sequence its submitted data[photos][] inputs when the
    // list is reordered — those stay in upload order — so the drag order never
    // reaches the server on its own. Send it explicitly: on submit, write the
    // current visual order into a hidden input. Its name is a TOP-LEVEL POST key
    // ("photo_order", not "data[...]") so Grav's form never captures it into the
    // page data — the server reads it straight from $_POST and renames the
    // copied files photo-01..NN to match, with nothing leaking into frontmatter.
    form.addEventListener('submit', function () {
        if (!orderPond) return;
        var files = orderPond.getFiles();
        if (!files.length) return; // text-only post — send nothing
        var hidden = form.querySelector('input[name="photo_order"]');
        if (!hidden) {
            hidden = document.createElement('input');
            hidden.type = 'hidden';
            hidden.name = 'photo_order';
            form.appendChild(hidden);
        }
        hidden.value = JSON.stringify(files.map(function (f) { return f.filename; }));
    }, true);

    function setStatus(msg, kind) {
        var el = photoStatusEl();
        if (!el) return;
        el.textContent = msg || '';
        el.className = 'photo-convert-status form-status' + (kind ? ' form-status--' + kind : '');
    }

    // Live summary + auto-collapse for the photo section. Reads FilePond's DOM
    // item states (robust across FilePond versions) plus the pre-FilePond HEIC
    // `converting` counter, so the section stays open while anything is in
    // flight and collapses to "✓ N ready" only once everything has settled.
    function refreshCollapse() {
        if (!collapse) return;
        var items = document.querySelectorAll('.filepond--item[data-filepond-item-state]');
        var total = items.length;
        var done = 0;
        Array.prototype.forEach.call(items, function (el) {
            if (el.getAttribute('data-filepond-item-state') === 'processing-complete') done++;
        });
        if (converting > 0 || (total > 0 && done < total)) {
            collapse.summary.textContent = converting > 0
                ? 'Converting ' + converting + ' photo' + (converting > 1 ? 's' : '') + '…'
                : 'Uploading ' + total + ' photo' + (total > 1 ? 's' : '') + '…';
            collapse.details.open = true;          // keep visible while working
        } else if (total > 0) {
            collapse.summary.textContent = '✓ ' + total + ' photo' + (total > 1 ? 's' : '') + ' ready — tap to review';
            collapse.details.open = false;         // auto-collapse when settled
        } else {
            collapse.summary.textContent = 'Photos (1–6)';
            collapse.details.open = true;
        }
    }

    // FilePond fires processfile/processfiles a tick before it flips the item's
    // data-filepond-item-state to "processing-complete", so a refresh bound
    // straight to the event reads a stale state. Re-check on trailing timeouts
    // so the summary settles on the final DOM state.
    function scheduleRefresh() {
        refreshCollapse();
        setTimeout(refreshCollapse, 150);
        setTimeout(refreshCollapse, 500);
    }

    function updateGate() {
        var btn = form.querySelector('button[type="submit"], input[type="submit"]');
        if (btn) btn.disabled = converting > 0;
        if (converting > 0) {
            setStatus('Converting ' + converting + ' photo' + (converting > 1 ? 's' : '') + '…');
        } else {
            var el = photoStatusEl();
            if (el && /Converting/.test(el.textContent)) setStatus('');
        }
        refreshCollapse();
    }

    // Guard the submit while a HEIC is still converting (it hasn't entered
    // FilePond yet, so FilePond's own processing gate wouldn't cover it). R17.
    form.addEventListener('submit', function (e) {
        if (converting > 0) {
            e.preventDefault();
            setStatus('Hang on — a photo is still converting.', 'err');
        }
    }, true);

    // Complete upload gate (BUG 2026-07-09: fast create submit lost the photo).
    // The form plugin's own submit guard (filepond-handler.js) only blocks the
    // PROCESSING / PROCESSING_QUEUED states. A file still being read (LOADING —
    // the "too quick" click) or one whose upload FAILED (PROCESSING_ERROR)
    // slips through it and the entry is saved without the photo — silently,
    // because an errored thumbnail still satisfies the ≥1-photo count. Block
    // submit unless every FilePond item reached PROCESSING_COMPLETE, and say
    // which case blocked it.
    form.addEventListener('submit', function (e) {
        if (!orderPond) return;
        var files = orderPond.getFiles();
        if (!files.length) return; // the ≥1-photo rule is initValidation's job
        var statuses = (window.FilePond && window.FilePond.FileStatus) || {};
        var pending = 0;
        var failed = 0;
        files.forEach(function (f) {
            if (f.status === statuses.PROCESSING_COMPLETE) return;
            if (f.status === statuses.PROCESSING_ERROR || f.status === statuses.LOAD_ERROR) failed++;
            else pending++; // LOADING, INIT, IDLE, QUEUED, PROCESSING, …
        });
        if (!pending && !failed) return;
        e.preventDefault();
        if (collapse) collapse.details.open = true; // reveal the item states
        setStatus(failed
            ? 'A photo failed to upload — remove it (tap its ✕) and re-add it before posting.'
            : 'Photos are still uploading — hang on a moment.', 'err');
        var el = photoStatusEl();
        if (el && typeof el.scrollIntoView === 'function') {
            el.scrollIntoView({ behavior: 'smooth', block: 'center' });
        }
    }, true);

    // FilePond hook: reject a HEIC item, convert it to JPEG via the lazy heic-to
    // chunk (KTD4), then re-add the JPEG through pond.addFile() so FilePond
    // uploads and page-attaches it via its own (correct) contract.
    function makeBeforeAddFile(pond) {
        return function (item) {
            var file = item && item.file;
            if (!file) return true;
            return looksLikeHeic(file).then(function (isHeic) {
                if (!isHeic) return true; // web format (R9) — FilePond handles it
                converting++;
                updateGate();
                import('heic-to').then(function (mod) {
                    var heicTo = mod.heicTo || (mod.default && mod.default.heicTo);
                    return heicTo({ blob: file, type: 'image/jpeg', quality: 0.85 });
                }).then(function (jpeg) {
                    var jpegFile = new File([jpeg], slugifyJpegName(file.name), { type: 'image/jpeg' });
                    pond.addFile(jpegFile);
                }).catch(function () {
                    // Fail closed (R16): the original HEIC is never added/uploaded.
                    setStatus('A photo couldn’t be converted and was skipped — the others are fine.', 'err');
                }).then(function () {
                    converting--;
                    updateGate();
                });
                return false; // reject the original HEIC
            });
        };
    }

    // The managed FilePond instance is created by the form plugin's
    // filepond-handler (DOMContentLoaded). Poll briefly, then attach the hook.
    var tries = 0;
    (function attach() {
        var ponds = (window.GravFilePond && window.GravFilePond.getInstances)
            ? window.GravFilePond.getInstances() : [];
        if (!ponds.length) {
            if (tries++ < 120) setTimeout(attach, 50);
            return;
        }
        ponds.forEach(function (pond) {
            if (pond && !pond._heicHooked) {
                pond._heicHooked = true;
                // allowReorder: drag thumbnails to set the order. The server
                // (cache-on-save) renames the copied files photo-01..NN in the
                // submitted order so the published entry honours it (entry media
                // is filename-ordered; hero = first).
                pond.setOptions({ beforeAddFile: makeBeforeAddFile(pond), allowReorder: true, itemInsertLocation: 'after' });
                orderPond = pond;
                // Update the collapse summary as files are added/uploaded/removed.
                ['addfile', 'processfile', 'processfiles', 'removefile', 'error'].forEach(function (ev) {
                    try { pond.on(ev, scheduleRefresh); } catch (e) { /* older FilePond API */ }
                });
                refreshCollapse();
            }
        });
    })();
}

/* ── Field helper ────────────────────────────────────────── */
// Attribute selector matches input, select AND textarea — unlike the old
// input[...] lookup, which broke once weather_desc became a <select> (U2).
function field(name) {
    return document.querySelector('[name="data[' + name + ']"]');
}

/* ── "More options" disclosure (U5, KTD5) ─────────────────────
 * The blueprint renders the advanced fields (force_connect/featured) flat;
 * here we relocate their .form-field wrappers into a native <details> so
 * they collapse by default with full keyboard/AT support. Auto-opens if any
 * advanced field already carries a value (edit / draft restore).
 */
function initDisclosure() {
    var flagged = Array.prototype.slice.call(document.querySelectorAll('.advanced-field'));
    if (!flagged.length) return;

    var wrappers = [];
    flagged.forEach(function (el) {
        var w = el.closest('.form-field');
        if (w && wrappers.indexOf(w) === -1) wrappers.push(w);
    });
    if (!wrappers.length) return;

    var details = document.createElement('details');
    details.className = 'more-options';
    var summary = document.createElement('summary');
    summary.className = 'more-options__summary';
    summary.textContent = 'More options';
    details.appendChild(summary);

    wrappers[0].parentNode.insertBefore(details, wrappers[0]);
    wrappers.forEach(function (w) { details.appendChild(w); });

    // A toggle only counts as an "advanced value" worth auto-expanding for when
    // it DEVIATES from its blueprint default — otherwise `published` (default ON)
    // would trip this on every plain create and render More options expanded.
    // Read each toggle's default straight from the markup rather than hardcoding
    // field names: Grav's toggle template stamps the HTML `checked` attribute on
    // the default option (value ?? default ?? highlight), and prefill/edit only
    // ever set the live `.checked` property — never the attribute — so `[checked]`
    // still points at the blueprint default while `:checked` is the current state.
    // This stays correct if a future advanced toggle defaults ON. (Edit mode
    // force-opens the panel elsewhere — see initEditMode — so this only governs
    // the create / draft-restore case.)
    var hasValue = wrappers.some(function (w) {
        var text = w.querySelector('input[type="text"]');
        if (text && text.value.trim()) return true;
        var current = w.querySelector('input[type="radio"]:checked');
        if (!current || !current.value) return false;
        var def = w.querySelector('input[type="radio"][checked]');
        return def ? current.value !== def.value : current.value !== '0';
    });
    if (hasValue) details.open = true;
}

/* ── Get Location / Get Weather (U5, R18) ─────────────────────
 * Migrated out of the template's inline scripts so it can read the now-<select>
 * weather_desc field and expose idle/loading/success/error states.
 */
var WMO_MAP = {
    0: 'Sunny', 1: 'Partly cloudy', 2: 'Partly cloudy', 3: 'Cloudy',
    45: 'Foggy', 48: 'Foggy',
    51: 'Drizzle', 53: 'Drizzle', 55: 'Drizzle', 56: 'Drizzle', 57: 'Drizzle',
    61: 'Rain', 63: 'Rain', 65: 'Rain', 66: 'Rain', 67: 'Rain', 80: 'Rain', 81: 'Rain', 82: 'Rain',
    71: 'Snow', 73: 'Snow', 75: 'Snow', 77: 'Snow', 85: 'Snow', 86: 'Snow',
    95: 'Thunderstorm', 96: 'Thunderstorm', 99: 'Thunderstorm'
};

function setStatus(el, msg, kind) {
    if (!el) return;
    el.className = 'form-status' + (kind ? ' form-status--' + kind : '');
    el.textContent = msg || '';
}

function initGeo() {
    var locBtn = document.getElementById('get-location');
    var wxBtn = document.getElementById('get-weather');
    if (!locBtn && !wxBtn) return;

    var locStatus = document.getElementById('location-status');
    var wxStatus = document.getElementById('weather-status');

    function coords() {
        var latEl = field('lat');
        var lngEl = field('lng');
        var lat = latEl ? latEl.value.trim() : '';
        var lng = lngEl ? lngEl.value.trim() : '';
        return (lat && lng) ? { lat: lat, lng: lng } : null;
    }

    // Get Weather is meaningless without coordinates — gate it (R18).
    function syncWeatherEnabled() {
        if (!wxBtn) return;
        var ok = !!coords();
        wxBtn.disabled = !ok;
        wxBtn.title = ok ? '' : 'Get location first';
    }
    syncWeatherEnabled();

    // Reverse-geocode the captured coordinates into City + Country via
    // BigDataCloud's free client endpoint (no API key, CORS-enabled). Only
    // fills fields the traveller left blank — never clobbers a manual entry —
    // and appends the resolved place to the location status. Best-effort: a
    // failure leaves the coordinates (and the manual city/country fields) intact.
    function reverseGeocode(lat, lng) {
        var cityEl = field('location_city');
        var countryEl = field('location_country');
        // Nothing to fill if the traveller already typed both.
        if ((!cityEl || cityEl.value.trim()) && (!countryEl || countryEl.value.trim())) return;

        var url = 'https://api.bigdatacloud.net/data/reverse-geocode-client?latitude=' +
            encodeURIComponent(lat) + '&longitude=' + encodeURIComponent(lng) + '&localityLanguage=en';
        fetch(url).then(function (r) { return r.json(); }).then(function (data) {
            // BigDataCloud's `city` is often empty in rural areas; `locality`
            // is the more reliably-populated place name, so fall back to it.
            var city = (data.city || data.locality || '').trim();
            var country = (data.countryName || '').trim();
            if (cityEl && !cityEl.value.trim() && city) cityEl.value = city;
            if (countryEl && !countryEl.value.trim() && country) countryEl.value = country;
            var place = [city, country].filter(Boolean).join(', ');
            if (place) {
                setStatus(locStatus, '✓ Location captured · ' + place, 'ok');
            }
        }).catch(function () { /* keep the coordinates-only status */ });
    }

    if (locBtn) {
        locBtn.addEventListener('click', function () {
            if (!navigator.geolocation) {
                setStatus(locStatus, 'Geolocation is not supported on this device.', 'err');
                return;
            }
            locBtn.classList.add('is-loading');
            locBtn.disabled = true;
            setStatus(locStatus, 'Getting location…');
            navigator.geolocation.getCurrentPosition(function (pos) {
                var lat = pos.coords.latitude.toFixed(6);
                var lng = pos.coords.longitude.toFixed(6);
                var latEl = field('lat');
                var lngEl = field('lng');
                if (latEl) latEl.value = lat;
                if (lngEl) lngEl.value = lng;
                locBtn.classList.remove('is-loading');
                locBtn.disabled = false;
                setStatus(locStatus, '✓ Location captured · ' + lat + ', ' + lng, 'ok');
                syncWeatherEnabled();
                reverseGeocode(lat, lng); // fill City/Country in the background
            }, function (err) {
                locBtn.classList.remove('is-loading');
                locBtn.disabled = false;
                setStatus(locStatus, '✗ ' + (err && err.message ? err.message : 'Could not get location') + ' — enter coordinates manually if needed.', 'err');
            }, { enableHighAccuracy: true, timeout: 15000 });
        });
    }

    if (wxBtn) {
        wxBtn.addEventListener('click', function () {
            var c = coords();
            if (!c) {
                setStatus(wxStatus, 'Get location first, then fetch weather.', 'err');
                return;
            }
            wxBtn.classList.add('is-loading');
            wxBtn.disabled = true;
            setStatus(wxStatus, 'Fetching weather…');
            var url = 'https://api.open-meteo.com/v1/forecast?latitude=' + c.lat +
                '&longitude=' + c.lng + '&current=temperature_2m,weather_code&temperature_unit=celsius';
            fetch(url).then(function (r) { return r.json(); }).then(function (data) {
                var temp = Math.round(data.current.temperature_2m);
                var desc = WMO_MAP[data.current.weather_code] || 'Cloudy';
                var tempEl = field('weather_temp_c');
                var descEl = field('weather_desc');
                if (tempEl) tempEl.value = temp;
                if (descEl) descEl.value = desc; // works for <select> too (R6)
                wxBtn.classList.remove('is-loading');
                syncWeatherEnabled();
                setStatus(wxStatus, '✓ Weather set · ' + desc + ' · ' + temp + '°C (edit above if needed)', 'ok');
            }).catch(function () {
                wxBtn.classList.remove('is-loading');
                syncWeatherEnabled();
                setStatus(wxStatus, '✗ Could not fetch weather — set it manually above.', 'err');
            });
        });
    }
}

/* ── Blocking required-field validation (U5, R19) ─────────────
 * Replaces the template's inline validator. Reads the EasyMDE-synced content
 * value (initEditor keeps the textarea current) and shows per-field messages.
 */
// Current local wall-clock time as the value a datetime-local input expects
// ("YYYY-MM-DDTHH:MM"). Uses the browser's timezone — the server has no idea
// where the traveller is — and strips seconds so the value round-trips cleanly.
function localNowDatetime() {
    var d = new Date();
    d.setSeconds(0, 0);
    d.setMinutes(d.getMinutes() - d.getTimezoneOffset());
    return d.toISOString().slice(0, 16);
}

function initValidation() {
    var REQUIRED = { title: 'Title', date: 'Date & time', content: 'Content' };
    var form = document.querySelector('form[name="new-entry"]');
    if (!form) return;

    // Prefill the date/time picker with "now" (local) unless draft restore
    // already put a value there. initDraft runs before initValidation in boot(),
    // so an empty field here means there was no saved draft date to keep.
    var dateEl = field('date');
    if (dateEl && !String(dateEl.value).trim()) {
        dateEl.value = localNowDatetime();
    }

    function clearErrors() {
        form.querySelectorAll('.field-error').forEach(function (el) { el.remove(); });
        form.querySelectorAll('.field-invalid').forEach(function (el) { el.classList.remove('field-invalid'); });
    }

    function showError(el, msg) {
        el.classList.add('field-invalid');
        var err = document.createElement('span');
        err.className = 'field-error';
        err.textContent = msg;
        el.parentNode.insertBefore(err, el.nextSibling);
    }

    // At least one photo is required. The picker is first in the form, so if it
    // is empty this is the first invalid field — reveal the (possibly collapsed)
    // section, show the message under its header, and return an element to
    // scroll to. Uses the same .field-error class so clearErrors() cleans it up.
    function showPhotoError(msg) {
        var collapse = form.querySelector('.photos-collapse');
        var host, anchor;
        if (collapse) {
            collapse.open = true; // reveal the drop zone + message
            anchor = collapse.querySelector('.photos-collapse__summary');
            host = collapse;
        } else {
            host = document.querySelector('.filepond-root, .form-input-file');
            anchor = host;
        }
        if (!anchor) return host || null;
        var err = document.createElement('span');
        err.className = 'field-error';
        err.textContent = msg;
        anchor.insertAdjacentElement('afterend', err);
        return host || anchor;
    }

    // Bubble phase: runs after initEditor's capture-phase codemirror.save(), so
    // the content textarea already holds the live value.
    form.addEventListener('submit', function (e) {
        clearErrors();
        var firstInvalid = null;

        // ≥1 photo (photos are the first field). Count any present FilePond item.
        // Skipped in edit mode (U7): the edit form loads the entry's existing
        // photos, and the owner may deliberately remove all of them to leave a
        // text-only entry — so an empty FilePond on an edit submit is allowed.
        if (!EDIT_MODE && document.querySelectorAll('.filepond--item').length < 1) {
            firstInvalid = showPhotoError('Add at least one photo.');
        }

        Object.keys(REQUIRED).forEach(function (name) {
            var el = field(name);
            if (el && !String(el.value).trim()) {
                showError(el, REQUIRED[name] + ' is required.');
                if (!firstInvalid) firstInvalid = el;
            }
        });
        if (firstInvalid) {
            e.preventDefault();
            if (typeof firstInvalid.focus === 'function') firstInvalid.focus();
            firstInvalid.scrollIntoView({ behavior: 'smooth', block: 'center' });
        }
    });
}

/* ── Draft persistence (U6, R19 preserve-on-failure + R20, KTD6) ──
 * Text field values are mirrored to localStorage so a failed submit or an
 * expired session mid-compose never loses the writing. Photos can't be
 * serialized (File/Blob) so they are NOT persisted — an inline hint says so
 * on restore. The draft is cleared ONLY when the server confirms a successful
 * post (<div class="notices success">), which is exactly what guarantees the
 * text survives every non-success outcome, independent of failure-type sniffing.
 */
var DRAFT_KEY = 'intotheeast:new-entry-draft';

function draftEls(form) {
    return Array.prototype.slice.call(form.querySelectorAll('[name^="data["]'))
        .filter(function (el) {
            if (el.type === 'file') return false;
            var n = el.name;
            return n.indexOf('data[_json') !== 0 && n.indexOf('data[photos') !== 0;
        });
}

function showReauthHint() {
    // The filepond-root div is server-rendered, so it exists even before
    // FilePond enhances it. Place the hint right after the photo field.
    var root = document.querySelector('.filepond-root, .form-input-file');
    if (!root || !root.parentNode) return;
    if (root.parentNode.querySelector('.photo-reauth-hint')) return;
    var p = document.createElement('p');
    p.className = 'photo-reauth-hint is-shown';
    p.textContent = 'Your text was restored — photos need re-selecting (they can’t be saved in a draft).';
    root.parentNode.insertBefore(p, root.nextSibling);
}

function initDraft() {
    var form = document.querySelector('form[name="new-entry"]');
    if (!form) return; // e.g. session expired → login form shown; draft is left intact
    if (EDIT_MODE) return; // editing an existing entry: don't restore/overwrite with a create draft

    // A confirmed successful post: clear the draft and do NOT restore onto the
    // freshly reset form. This runs before any save, so process.reset can't
    // round-trip blank fields back into storage.
    if (document.querySelector('.notices.success')) {
        try { localStorage.removeItem(DRAFT_KEY); } catch (e) { /* ignore */ }
        return;
    }

    function save() {
        var data = {};
        draftEls(form).forEach(function (el) {
            if (el.type === 'radio') { if (el.checked) { data[el.name] = el.value; } }
            else { data[el.name] = el.value; }
        });
        try { localStorage.setItem(DRAFT_KEY, JSON.stringify(data)); } catch (e) { /* quota / private mode */ }
    }

    var raw = null;
    try { raw = localStorage.getItem(DRAFT_KEY); } catch (e) { raw = null; }
    if (raw) {
        var data = null;
        try { data = JSON.parse(raw); } catch (e) { data = null; }
        if (data) {
            var restoredSomething = false;
            Object.keys(data).forEach(function (name) {
                var val = data[name];
                if (val != null && String(val).trim()) { restoredSomething = true; }
                if (name === 'data[content]') { return; } // restored via the editor below
                var radios = form.querySelectorAll('input[type="radio"][name="' + name + '"]');
                if (radios.length) {
                    radios.forEach(function (r) { r.checked = (r.value === val); });
                    return;
                }
                var el = form.querySelector('[name="' + name + '"]');
                if (el && el.type !== 'file') { el.value = val; }
            });
            if (window.postFormEditor && data['data[content]'] != null) {
                window.postFormEditor.value(data['data[content]']);
            }
            if (restoredSomething) { showReauthHint(); }
        }
    }

    // Save text on every edit (change covers selects/toggles; input covers text).
    form.addEventListener('input', save);
    form.addEventListener('change', save);
    if (window.postFormEditor) {
        window.postFormEditor.codemirror.on('change', save);
    }
}

/* ── Post-success confirmation (issue: message was off-screen) ─────
 * After a successful submit the page re-renders with Grav's success notice at
 * the top of a long, reset form — easy to miss on mobile. Scroll it into view
 * and add a "View your journal" / "Post another" CTA the owner can act on.
 */
function initSuccessState() {
    var wrap = document.querySelector('.post-form-wrap');
    var notice = document.querySelector('.post-form-wrap .notices.success, .post-form-wrap .notices.green');
    if (!wrap || !notice) return;

    var panel = document.createElement('div');
    panel.className = 'post-success';

    var title = document.createElement('p');
    title.className = 'post-success__title';
    title.textContent = '✓ Saved to your journal.';
    panel.appendChild(title);

    var actions = document.createElement('div');
    actions.className = 'post-success__actions';

    var tripUrl = wrap.getAttribute('data-trip-url');
    if (tripUrl) {
        var view = document.createElement('a');
        view.className = 'post-success__view';
        view.href = tripUrl;
        view.textContent = 'View your journal →';
        actions.appendChild(view);
    }

    var again = document.createElement('a');
    again.className = 'post-success__again';
    again.href = window.location.pathname; // reload /post fresh
    again.textContent = 'Post another';
    actions.appendChild(again);

    panel.appendChild(actions);
    notice.parentNode.insertBefore(panel, notice.nextSibling);

    // Issue #1: after a successful post, show the confirmation *only* — hide the
    // (now-reset) form and the location/weather controls so a stray empty form
    // doesn't render below the success panel. The .notices message and the
    // injected panel live in .form-wrapper *before* the <form>, so hiding the
    // form leaves them visible.
    ['form', '.form-action-row', '#location-status', '#weather-status'].forEach(function (sel) {
        var el = wrap.querySelector(sel);
        if (el) el.style.display = 'none';
    });

    notice.scrollIntoView({ behavior: 'smooth', block: 'start' });
}

/* ── Edit mode (U5, KTD4; U7 photos): prefill from the API, adapt the form ─────
 * The Edit control on a journal card links to /post?edit=<entry-route>. We detect
 * that param, disable the form (D1), fetch the entry via the session-auth Grav
 * API (credentials:include — the gpx-manager pattern), populate every field, set
 * the hidden edit_path so the save writes back in place (cache-on-save toggles
 * overwrite_mode:edit server-side), and switch the chrome to "Edit entry" /
 * "Save changes" (D6).
 *
 * Photos: FilePond is decommissioned in edit mode (see initPhotoConversion's
 * EDIT_MODE guard). Instead initPhotoEditor renders our own thumbnail grid from
 * the media API and persists add/delete/reorder LIVE — decoupled from this form's
 * text-field Save. The >=1-photo rule stays relaxed in edit mode so an owner may
 * leave a text-only entry after removing every photo.
 */
var EDIT_MODE = false;

function qparam(name) {
    return new URLSearchParams(window.location.search).get(name);
}

function editSetText(name, value) {
    var el = field(name);
    if (el) el.value = (value === undefined || value === null) ? '' : String(value);
}

// Toggles (published/featured/force_connect) render as a 1/0 radio pair.
function editSetToggle(name, truthy) {
    var want = truthy ? '1' : '0';
    var radios = document.querySelectorAll('[name="data[' + name + ']"]');
    Array.prototype.forEach.call(radios, function (r) { r.checked = (String(r.value) === want); });
}

function editSetContent(value) {
    var text = (value === undefined || value === null) ? '' : String(value);
    if (window.postFormEditor && typeof window.postFormEditor.value === 'function') {
        window.postFormEditor.value(text);
    } else {
        var ta = field('content');
        if (ta) ta.value = text;
    }
}

// Disable/enable the form's own fields + submit (get-location/weather live
// OUTSIDE the form, so they're untouched). Also gates the EasyMDE editor.
//
// The photos/FilePond control is deliberately EXCLUDED: FilePond reads the
// disabled state of its underlying input when the form plugin creates it and
// never re-enables. In edit mode FilePond is decommissioned anyway — the live
// photo editor (initPhotoEditor) hides it and manages add/delete/reorder against
// the media API independently of this form's Save — so its disabled state during
// the D1 prefill window is irrelevant.
function editFormDisabled(form, disabled) {
    var els = form.querySelectorAll('input, textarea, select, button');
    Array.prototype.forEach.call(els, function (el) {
        if (el.type === 'file' || (el.name && el.name.indexOf('data[photos') === 0)) return;
        el.disabled = disabled;
    });
    if (window.postFormEditor && window.postFormEditor.codemirror) {
        window.postFormEditor.codemirror.setOption('readOnly', disabled ? 'nocursor' : false);
    }
}

function editSubmitLabel(btn, text) {
    if (!btn) return;
    if (btn.tagName === 'INPUT') btn.value = text; else btn.textContent = text;
}

function editShowError(wrap, msg) {
    var existing = wrap.querySelector('.post-edit-error');
    if (existing) { existing.textContent = msg; return; }
    var banner = document.createElement('div');
    banner.className = 'post-edit-error';
    banner.setAttribute('role', 'alert');
    banner.textContent = msg;
    var h1 = wrap.querySelector('h1');
    if (h1) h1.insertAdjacentElement('afterend', banner); else wrap.insertBefore(banner, wrap.firstChild);
}

/* ── Photo editor (edit mode): live add / delete / reorder via the media API ───
 * Replaces the FilePond photo path in edit mode with our own thumbnail grid (the
 * gpx-manager pattern): add + delete hit the STOCK media API and reorder hits the
 * custom /entry/{slug}/photos/order route; each op persists IMMEDIATELY, decoupled
 * from the form's text-field Save. SortableJS provides the drag FilePond couldn't
 * do reliably here. After every mutation the entry is renumbered photo-01..NN
 * server-side so the feed cover (media.images|first) follows the arranged order.
 *
 * Every op's failure path shows an inline error and never lets the shown grid
 * disagree with disk without saying so: a failed reorder reverts the SortableJS
 * move to the last-known-good order; a failed add rolls its uploads back.
 */

var PHOTO_EXT_RE = /\.(jpe?g|png|webp|heic|heif|gif)$/i;

// Numeric index behind a photo-NN filename (zero-padding tolerant); non-photo
// names (freshly stock-uploaded, not yet renumbered) sort last, then by name.
function photoIndexOf(name) {
    var m = /(?:^|\/)photo-0*(\d+)\./i.exec(name);
    return m ? parseInt(m[1], 10) : Number.MAX_SAFE_INTEGER;
}
function byPhotoOrder(a, b) {
    var ia = photoIndexOf(a), ib = photoIndexOf(b);
    if (ia !== ib) return ia - ib;
    return a < b ? -1 : (a > b ? 1 : 0);
}

// A throwaway, collision-proof upload name. The file is renumbered to photo-NN
// immediately after the batch, so this name only has to be unique enough not to
// clobber an existing photo-NN or a same-named sibling in the same add batch.
function uploadName(origName, forceJpeg) {
    var s = String(origName || 'photo');
    var dot = s.lastIndexOf('.');
    var base = (dot > 0 ? s.slice(0, dot) : s).toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/^-+|-+$/g, '') || 'photo';
    var ext = forceJpeg ? '.jpg' : (dot > 0 ? s.slice(dot).toLowerCase() : '.jpg');
    var uniq = Date.now().toString(36) + Math.random().toString(36).slice(2, 6);
    return base + '-' + uniq + ext;
}

function initPhotoEditor(route) {
    var form = document.querySelector('form[name="new-entry"]');
    if (!form || !route) return;
    // The reorder route keys on the entry's folder segment (last path segment).
    var slug = route.split('/').filter(Boolean).pop();
    if (!slug) return;

    // Decommission the (hidden, unpopulated) FilePond section entirely.
    var fpRoot = document.querySelector('.filepond-root, .form-input-file');
    var fpField = fpRoot ? fpRoot.closest('.form-field') : null;
    if (fpField) fpField.style.display = 'none';
    var legacyCollapse = form.querySelector('.photos-collapse');
    if (legacyCollapse) legacyCollapse.style.display = 'none';

    // Build the editor and place it at the top of the form (photos come first).
    var host = document.createElement('div');
    host.className = 'photo-editor';
    host.innerHTML =
        '<div class="photo-editor__head">' +
            '<span class="photo-editor__label">Photos</span>' +
            '<button type="button" class="photo-editor__add">Add photos</button>' +
        '</div>' +
        '<p class="photo-editor__status gpx-status" role="status"></p>' +
        '<div class="photo-editor__grid" aria-live="polite"></div>' +
        // SVG intentionally excluded (server-side block is a documented fast-follow).
        '<input type="file" class="photo-editor__input" multiple hidden ' +
            'accept="image/jpeg,image/png,image/webp,.jpg,.jpeg,.png,.webp,.heic,.heif">';
    if (fpField && fpField.parentNode) fpField.parentNode.insertBefore(host, fpField);
    else form.insertBefore(host, form.firstElementChild);

    var grid = host.querySelector('.photo-editor__grid');
    var statusEl = host.querySelector('.photo-editor__status');
    var addBtn = host.querySelector('.photo-editor__add');
    var fileInput = host.querySelector('.photo-editor__input');

    var photos = [];       // current filenames, in display order
    var sortable = null;
    var busy = false;
    var renderNonce = 0;   // cache-buster: photo-NN URLs are reused across reorders

    function setStatus(msg, isError) {
        statusEl.textContent = msg || '';
        statusEl.className = 'photo-editor__status gpx-status' + (isError ? ' error' : '');
    }

    function setBusy(b) {
        busy = b;
        addBtn.disabled = b;
        Array.prototype.forEach.call(
            grid.querySelectorAll('.photo-editor__del, .photo-editor__confirm-yes, .photo-editor__confirm-no'),
            function (el) { el.disabled = b; }
        );
        if (sortable) sortable.option('disabled', b);
    }

    // apiSend / apiErrorMsg now live in ./api-utils.js (shared with trip-publish.js).

    function mediaList() {
        return fetch('/api/v1/pages' + route + '/media', { credentials: 'include', headers: { Accept: 'application/json' } })
            .then(function (r) { if (!r.ok) throw new Error('HTTP ' + r.status); return r.json(); })
            .then(function (j) {
                return ((j && j.data) || [])
                    .filter(function (m) { return m && typeof m.filename === 'string' && PHOTO_EXT_RE.test(m.filename); })
                    .map(function (m) { return m.filename; })
                    .sort(byPhotoOrder);
            });
    }

    function reorder(order) {
        return apiSend('/api/v1/entry/' + encodeURIComponent(slug) + '/photos/order', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
            body: JSON.stringify({ order: order })
        });
    }

    function render(list) {
        photos = (list || []).slice();
        if (sortable) { sortable.destroy(); sortable = null; }
        grid.innerHTML = '';
        if (!photos.length) {
            grid.innerHTML = '<p class="photo-editor__empty">No photos yet — add some.</p>';
            return;
        }
        var v = ++renderNonce;
        photos.forEach(function (name) {
            var cell = document.createElement('div');
            cell.className = 'photo-editor__cell';
            cell.setAttribute('data-filename', name);
            var img = document.createElement('img');
            img.className = 'photo-editor__img';
            img.loading = 'lazy';
            img.alt = name;
            // Reorder reuses photo-NN URLs for different bytes; bust the cache.
            img.src = route + '/' + encodeURIComponent(name) + '?v=' + v;
            var del = document.createElement('button');
            del.type = 'button';
            del.className = 'photo-editor__del';
            del.setAttribute('aria-label', 'Delete ' + name);
            del.textContent = '✕';
            del.addEventListener('click', function () { confirmDelete(cell, name); });
            cell.appendChild(img);
            cell.appendChild(del);
            grid.appendChild(cell);
        });
        if (photos.length > 1) {
            sortable = new Sortable(grid, {
                animation: 150,
                draggable: '.photo-editor__cell',
                filter: '.photo-editor__confirm',
                onEnd: applyReorder
            });
        }
    }

    function currentDomOrder() {
        return Array.prototype.map.call(grid.querySelectorAll('.photo-editor__cell'),
            function (c) { return c.getAttribute('data-filename'); });
    }

    function sameOrder(a, b) {
        if (a.length !== b.length) return false;
        for (var i = 0; i < a.length; i++) { if (a[i] !== b[i]) return false; }
        return true;
    }

    function applyReorder() {
        var next = currentDomOrder();
        if (sameOrder(next, photos)) return; // dropped in place
        var lastGood = photos.slice();
        setBusy(true);
        setStatus('Saving order…');
        // Split the two failure stages: a failed SAVE reverts the drag; a failed
        // REFRESH after a successful save must NOT revert (the order did persist)
        // — show the saved order and reconcile on the next op.
        reorder(next).then(function () {
            return mediaList().then(
                function (list) { setStatus(''); render(list); },
                function () { setStatus(''); render(next); } // saved; DOM already shows it
            );
        }, function (err) {
            setStatus(apiErrorMsg(err, 'Couldn’t save the new order — reverted. Try again.'), true);
            render(lastGood); // revert the SortableJS move to last-known-good
        }).then(function () { setBusy(false); });
    }

    // ✕ swaps the cell to an inline "Delete? [Confirm] [Cancel]" (option a).
    function confirmDelete(cell, name) {
        if (busy || cell.querySelector('.photo-editor__confirm')) return;
        var overlay = document.createElement('div');
        overlay.className = 'photo-editor__confirm';
        overlay.innerHTML =
            '<span class="photo-editor__confirm-q">Delete?</span>' +
            '<button type="button" class="photo-editor__confirm-yes">Confirm</button>' +
            '<button type="button" class="photo-editor__confirm-no">Cancel</button>';
        cell.appendChild(overlay);
        cell.classList.add('is-confirming');
        overlay.querySelector('.photo-editor__confirm-no').addEventListener('click', function () {
            cell.classList.remove('is-confirming');
            overlay.remove();
        });
        overlay.querySelector('.photo-editor__confirm-yes').addEventListener('click', function () {
            overlay.querySelector('.photo-editor__confirm-yes').disabled = true;
            overlay.querySelector('.photo-editor__confirm-no').disabled = true;
            doDelete(name);
        });
    }

    function doDelete(name) {
        var lastGood = photos.slice();
        var remaining = photos.filter(function (p) { return p !== name; });
        setBusy(true);
        setStatus('Deleting…');
        // A 404 means the file is already gone — treat it as success so retrying
        // a ghost cell converges instead of looping on "couldn't delete".
        apiSend('/api/v1/pages' + route + '/media/' + encodeURIComponent(name), { method: 'DELETE' }, [204, 404])
            .then(function () {
                // Deleted. Renumber survivors (cover=first), then refresh. A failure
                // AFTER this point must NOT resurrect the deleted photo — show the
                // survivor set, never lastGood.
                return (remaining.length ? reorder(remaining) : Promise.resolve()).then(mediaList).then(
                    function (list) { setStatus(''); render(list); },
                    function () {
                        setStatus('Photo deleted, but refreshing the list failed — reload if it looks off.', true);
                        render(remaining);
                    }
                );
            }, function (err) {
                // The DELETE request itself failed — nothing changed on disk.
                setStatus(apiErrorMsg(err, 'Couldn’t delete that photo. Try again.'), true);
                render(lastGood);
            })
            .then(function () { setBusy(false); });
    }

    // HEIC→JPEG (reusing the sniff + lazy heic-to converter) else pass through.
    function toWebSafe(file) {
        return looksLikeHeic(file).then(function (isHeic) {
            if (!isHeic) return { blob: file, name: uploadName(file.name, false) };
            return import('heic-to').then(function (mod) {
                var heicTo = mod.heicTo || (mod.default && mod.default.heicTo);
                return heicTo({ blob: file, type: 'image/jpeg', quality: 0.85 });
            }).then(function (jpeg) { return { blob: jpeg, name: uploadName(file.name, true) }; });
        });
    }

    addBtn.addEventListener('click', function () { if (!busy) fileInput.click(); });
    fileInput.addEventListener('change', function () {
        var files = Array.prototype.slice.call(fileInput.files || []);
        fileInput.value = '';
        if (files.length) addFiles(files);
    });

    function addFiles(files) {
        setBusy(true);
        var total = files.length, done = 0, failed = 0, authFailed = false;
        var before = photos.slice();
        var seq = Promise.resolve();
        files.forEach(function (file) {
            seq = seq.then(function () {
                done++;
                setStatus('Uploading ' + done + ' of ' + total + '…');
                return toWebSafe(file).then(function (prep) {
                    var fd = new FormData();
                    fd.append('file', prep.blob, prep.name);
                    return apiSend('/api/v1/pages' + route + '/media', { method: 'POST', body: fd });
                }).then(null, function (err) {
                    failed++;
                    if (err && (err.status === 401 || err.status === 403)) authFailed = true;
                });
            });
        });
        seq.then(function () {
            setStatus('Finishing…');
            return mediaList(); // authoritative set (includes new stock-named files)
        }).then(function (current) {
            var kept = before.filter(function (n) { return current.indexOf(n) !== -1; });
            var added = current.filter(function (n) { return before.indexOf(n) === -1; });
            var order = kept.concat(added);
            if (!order.length) { render([]); return null; }
            // One renumber pass after the whole batch. If it fails, auto-retry
            // (idempotent — renumber skips files not on disk); if it still fails,
            // roll the just-added files back so no orphan stock-named image breaks
            // cover=first, then surface a single error. Track whether every
            // rollback DELETE actually landed (204/404 = gone): a swallowed
            // rollback failure would leave a stray stock-named file that can steal
            // the lexicographic cover slot, so we warn the owner to reload.
            return reorder(order)
                .catch(function () { return reorder(order); })
                .catch(function () {
                    return Promise.all(added.map(function (n) {
                        return apiSend('/api/v1/pages' + route + '/media/' + encodeURIComponent(n), { method: 'DELETE' }, [204, 404])
                            .then(function () { return true; }, function () { return false; });
                    })).then(function (results) {
                        var e = new Error('reorder failed');
                        e.rolledBack = true;
                        e.rollbackIncomplete = results.indexOf(false) !== -1;
                        throw e;
                    });
                })
                .then(mediaList);
        }).then(function (list) {
            if (list) render(list);
            if (!failed) {
                setStatus('');
            } else if (authFailed) {
                setStatus('Couldn’t add photos — your login session expired. Sign in again, then retry.', true);
            } else {
                setStatus(failed + ' photo' + (failed > 1 ? 's' : '') + ' couldn’t be added.', true);
            }
        }).catch(function (err) {
            var msg;
            if (err && err.rolledBack) {
                msg = err.rollbackIncomplete
                    ? 'Couldn’t finish adding photos and cleanup was incomplete — reload the page and check your photos.'
                    : 'Couldn’t finish adding photos — changes were rolled back. Try again.';
            } else {
                msg = 'Couldn’t add photos. Please try again.';
            }
            setStatus(msg, true);
            return mediaList().then(render, function () { render(before); });
        }).then(function () { setBusy(false); });
    }

    // Initial load.
    grid.innerHTML = '<p class="photo-editor__loading">Loading photos…</p>';
    mediaList().then(render).catch(function () {
        setStatus('Couldn’t load photos.', true);
        render([]);
    });
}

function initEditMode() {
    var form = document.querySelector('form[name="new-entry"]');
    var wrap = document.querySelector('.post-form-wrap');
    if (!form || !wrap) return;

    var route = qparam('edit');
    if (!route) return; // create mode — nothing to do
    EDIT_MODE = true;

    var h1 = wrap.querySelector('h1');
    if (h1) h1.textContent = 'Edit entry'; // D6
    var submitBtn = form.querySelector('button[type="submit"], input[type="submit"]');
    var origLabel = submitBtn ? (submitBtn.tagName === 'INPUT' ? submitBtn.value : submitBtn.textContent) : 'Save changes';

    // U7: the photos section stays visible in edit mode — existing photos are
    // loaded into FilePond below once the prefill resolves. The >=1-photo rule is
    // skipped while EDIT_MODE (see initValidation) so removing every photo is OK.

    // D1: no typing before prefill lands — disable + loading label.
    editFormDisabled(form, true);
    editSubmitLabel(submitBtn, 'Loading entry…');

    // D3/D5: carry the edit context on the form action so a server re-render
    // (once the Form 9.1.10 filepond regression is fixed) re-enters edit mode and
    // the return target survives the round-trip.
    var ret = qparam('return') || wrap.getAttribute('data-trip-url') || '';
    form.setAttribute('action', '/post?edit=' + encodeURIComponent(route) + (ret ? '&return=' + encodeURIComponent(ret) : ''));

    fetch('/api/v1/pages' + route, { credentials: 'include', headers: { Accept: 'application/json' } })
        .then(function (r) { if (!r.ok) { var e = new Error('HTTP ' + r.status); e.status = r.status; throw e; } return r.json(); })
        .then(function (json) {
            var d = (json && json.data) || {};
            var h = d.header || {};
            editSetText('title', h.title != null ? h.title : d.title);
            editSetText('date', h.date ? String(h.date).replace(' ', 'T') : ''); // datetime-local wants a T separator
            editSetContent(d.content);
            editSetText('lat', h.lat);
            editSetText('lng', h.lng);
            editSetText('location_city', h.location_city);
            editSetText('location_country', h.location_country);
            editSetText('weather_desc', h.weather_desc);
            editSetText('weather_temp_c', h.weather_temp_c);
            editSetText('transport_mode', h.transport_mode);
            editSetToggle('featured', h.featured);
            editSetToggle('force_connect', h.force_connect);
            editSetToggle('published', h.published !== undefined ? h.published : d.published);

            var editPathEl = field('edit_path');
            if (editPathEl) editPathEl.value = route + '/entry.md';

            editFormDisabled(form, false);
            editSubmitLabel(submitBtn, 'Save changes'); // D6

            var more = form.querySelector('.more-options');
            if (more) more.open = true; // reveal Published/Featured/Connector

            initPhotoEditor(route); // live add/delete/reorder via the media API
        })
        .catch(function (err) {
            // D7: inline error between heading and first field; keep the form
            // disabled and empty rather than leaving a half-filled state.
            // Distinguish a deleted/missing entry (404) from a transient load
            // failure so the owner knows whether retrying is worthwhile.
            var msg = (err && err.status === 404)
                ? 'This entry no longer exists — it may have been deleted. Head back to the journal.'
                : 'Sorry — this entry couldn’t be loaded for editing. Check your connection and try again.';
            editShowError(wrap, msg);
            editSubmitLabel(submitBtn, origLabel);
        });
}

/* ── Boot ────────────────────────────────────────────────── */
function boot() {
    // Exposed for U6 draft restore and the Playwright specs; null when this
    // bundle loads on a page without the content field.
    window.postFormEditor = initEditor();
    initSuccessState();
    // Edit mode first: sets EDIT_MODE (so initDraft skips and initValidation
    // relaxes the photo rule), disables the form and starts the async prefill.
    initEditMode();
    // Restore before disclosure/geo so their on-load checks (auto-open,
    // weather-button enable) see the restored values. No-op in edit mode.
    initDraft();
    initPhotoConversion();
    initDisclosure();
    initGeo();
    initValidation();
}

if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', boot);
} else {
    boot();
}