/*
 * feed-actions.js (U6) — owner delete wiring for journal feed cards.
 *
 * Loaded only on the trip / home active-trip feed for the owner. The Edit link is
 * a plain navigation (no JS). Delete is a two-step inline confirm (no browser
 * dialog): Delete → Cancel / Confirm delete → DELETE /api/v1/entry/<slug>
 * (session cookie), then the card is removed and focus moves to the next card.
 *
 * Markup (rendered by partials/entry-journal.html.twig):
 *   article.journal-post[data-entry-route]
 *     .journal-post-actions[data-entry-route]
 *       button[data-delete-start]           (Delete)
 *       .entry-delete-confirm[hidden]
 *         button[data-delete-cancel]        (Cancel)
 *         button[data-delete-confirm]       (Confirm delete)
 *       .entry-delete-msg[aria-live]        (inline error slot)
 */

// One page-level polite live region for cross-card announcements (D4) — the
// per-card .entry-delete-msg vanishes with the card it belongs to.
function liveRegion() {
    var el = document.getElementById('feed-actions-live');
    if (!el) {
        el = document.createElement('div');
        el.id = 'feed-actions-live';
        el.setAttribute('aria-live', 'polite');
        el.setAttribute('role', 'status');
        el.className = 'sr-only';
        document.body.appendChild(el);
    }
    return el;
}
function announce(msg) { liveRegion().textContent = msg; }

function slugFromRoute(route) {
    var parts = String(route || '').replace(/\/+$/, '').split('/');
    return parts[parts.length - 1] || '';
}

function showConfirm(actions, show) {
    var del = actions.querySelector('[data-delete-start]');
    var confirm = actions.querySelector('.entry-delete-confirm');
    if (del) del.hidden = show;
    if (confirm) confirm.hidden = !show;
    if (!show) {
        var msg = actions.querySelector('.entry-delete-msg');
        if (msg) msg.textContent = '';
    }
}

function performDelete(actions) {
    var route = actions.getAttribute('data-entry-route');
    var slug = slugFromRoute(route);
    var cancelBtn = actions.querySelector('[data-delete-cancel]');
    var confirmBtn = actions.querySelector('[data-delete-confirm]');
    var msg = actions.querySelector('.entry-delete-msg');
    var card = actions.closest('.journal-post');

    // D2: lock both buttons immediately so a mobile double-tap can't fire two
    // DELETEs (the second would 404 on an already-removed folder).
    if (confirmBtn) { confirmBtn.disabled = true; confirmBtn.textContent = 'Deleting…'; }
    if (cancelBtn) cancelBtn.disabled = true;
    if (msg) msg.textContent = '';
    announce('Deleting entry…');

    fetch('/api/v1/entry/' + encodeURIComponent(slug), {
        method: 'DELETE',
        credentials: 'include',
        headers: { Accept: 'application/json' }
    }).then(function (r) {
        if (!(r.status === 204 || r.ok)) throw new Error('HTTP ' + r.status);

        // D4: move focus to the next journal card (or the feed heading) BEFORE
        // removing this one, then announce.
        var next = card ? card.nextElementSibling : null;
        while (next && !next.classList.contains('journal-post')) next = next.nextElementSibling;
        var focusTarget = next
            || (card && card.previousElementSibling && card.previousElementSibling.classList && card.previousElementSibling.classList.contains('journal-post') ? card.previousElementSibling : null)
            || document.querySelector('.home-trip-name, .home-feed-col h1, .feed');
        if (card) card.remove();
        if (focusTarget) {
            if (!focusTarget.hasAttribute('tabindex')) focusTarget.setAttribute('tabindex', '-1');
            try { focusTarget.focus({ preventScroll: false }); } catch (e) { /* older browsers */ }
        }
        announce('Entry deleted.');
    }).catch(function () {
        // D7: restore the control + inline error, constrained to the card.
        if (confirmBtn) { confirmBtn.disabled = false; confirmBtn.textContent = 'Confirm delete'; }
        if (cancelBtn) cancelBtn.disabled = false;
        if (msg) msg.textContent = 'Could not delete — please try again.';
        announce('Delete failed.');
    });
}

function initFeedActions() {
    document.addEventListener('click', function (e) {
        var start = e.target.closest ? e.target.closest('[data-delete-start]') : null;
        var cancel = e.target.closest ? e.target.closest('[data-delete-cancel]') : null;
        var confirm = e.target.closest ? e.target.closest('[data-delete-confirm]') : null;
        if (!start && !cancel && !confirm) return;

        var actions = (start || cancel || confirm).closest('.journal-post-actions');
        if (!actions) return;
        e.preventDefault();

        if (start) { showConfirm(actions, true); return; }
        if (cancel) { showConfirm(actions, false); return; }
        if (confirm) {
            var btn = actions.querySelector('[data-delete-confirm]');
            if (btn && btn.disabled) return; // already in flight (D2)
            performDelete(actions);
        }
    });
}

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