/*
 * trip-publish.js (U6) — owner publish/unpublish toggle for the /trips listing.
 *
 * Loaded only for the owner (trips.html.twig gates the asset). Each listing card
 * carries a switch (partials/trip-publish-toggle.html.twig) overlaid on the cover
 * as a sibling of the navigating <a>, so toggling never follows the card link.
 *
 * Flow: click/Enter/Space on the switch → (if unpublishing the ACTIVE trip)
 * window.confirm → lock the switch (aria-busy) → POST /api/v1/trip/<slug>/publish
 * {published} (session cookie) → on success flip the switch + Draft badge in place
 * (no reload); on failure re-enable and surface a VISIBLE page-level toast.
 *
 * Markup contract (data-* on button.trip-publish-toggle):
 *   data-trip-slug, data-published ("true"|"false"),
 *   data-active ("true" when this is site.active_trip); aria-checked mirrors
 *   data-published. The sibling .trip-draft-badge is shown iff not published.
 */

import { apiSend, apiErrorMsg } from './api-utils.js';

var TOAST_TIMEOUT_MS = 5000;
var PUBLISH_TIMEOUT_MS = 10000; // abort a hung toggle so the switch never sticks (R13)
var toastTimer = null;

// One visible, page-level polite toast (R15). Modelled on the feed-actions.js
// live region but intentionally NOT sr-only: the trip card has no inline message
// slot, so a sighted owner must actually see the failure. Replaces (never queues)
// the message, auto-dismisses, and carries a manual close control.
function toastEl() {
    var el = document.getElementById('trip-publish-live');
    if (!el) {
        el = document.createElement('div');
        el.id = 'trip-publish-live';
        el.className = 'trip-publish-toast';
        el.setAttribute('role', 'status');
        el.setAttribute('aria-live', 'polite');
        el.hidden = true;

        var msg = document.createElement('span');
        msg.className = 'trip-publish-toast__msg';

        var close = document.createElement('button');
        close.type = 'button';
        close.className = 'trip-publish-toast__close';
        close.setAttribute('aria-label', 'Dismiss');
        close.textContent = '×'; // ×
        close.addEventListener('click', hideToast);

        el.appendChild(msg);
        el.appendChild(close);
        document.body.appendChild(el);
    }
    return el;
}
function showToast(message) {
    var el = toastEl();
    el.querySelector('.trip-publish-toast__msg').textContent = message;
    el.hidden = false;
    if (toastTimer) clearTimeout(toastTimer);
    toastTimer = setTimeout(hideToast, TOAST_TIMEOUT_MS);
}
function hideToast() {
    var el = document.getElementById('trip-publish-live');
    if (el) el.hidden = true;
    if (toastTimer) { clearTimeout(toastTimer); toastTimer = null; }
}

function setPublishedUI(btn, published) {
    btn.setAttribute('aria-checked', published ? 'true' : 'false');
    btn.setAttribute('data-published', published ? 'true' : 'false');
    var overlay = btn.closest('.trip-publish-overlay');
    var badge = overlay ? overlay.querySelector('.trip-draft-badge') : null;
    if (badge) badge.hidden = published;
}

function setPending(btn, pending) {
    if (pending) {
        btn.setAttribute('aria-busy', 'true');
        btn.disabled = true;
    } else {
        btn.removeAttribute('aria-busy');
        btn.disabled = false;
    }
}

function onToggle(btn) {
    if (btn.getAttribute('aria-busy') === 'true') return; // already in flight (R13)

    var current = btn.getAttribute('data-published') === 'true';
    var next = !current;

    // R12: unpublishing the ACTIVE trip removes it from the home page — confirm
    // first; cancelling leaves it published (no request, no UI change).
    if (!next && btn.getAttribute('data-active') === 'true') {
        if (!window.confirm('This is your active trip — unpublishing it also removes it from the home page. Unpublish anyway?')) {
            return;
        }
    }

    var slug = btn.getAttribute('data-trip-slug');
    setPending(btn, true);

    apiSend('/api/v1/trip/' + encodeURIComponent(slug) + '/publish', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
        body: JSON.stringify({ published: next })
    }, null, PUBLISH_TIMEOUT_MS).then(function () {
        // Success: flip the switch + Draft badge in place, no reload (R14).
        setPublishedUI(btn, next);
        setPending(btn, false);
    }).catch(function (err) {
        // Failure: the UI never flipped, so revert is just re-enable (R15).
        setPending(btn, false);
        showToast(apiErrorMsg(err, "Couldn't update — try again."));
    });
}

function initTripPublish() {
    document.addEventListener('click', function (e) {
        var btn = e.target.closest ? e.target.closest('.trip-publish-toggle') : null;
        if (!btn) return;
        e.preventDefault();
        onToggle(btn);
    });
}

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