{{define "page-header"}}{{end}}

{{define "page-content"}}
<!-- Dashboard (loads immediately) -->
<div id="tab-dashboard" class="admin-panel"
     role="tabpanel"
     aria-labelledby="tab-label-dashboard"
     tabindex="0"
     hx-get="/admin/api/tab/dashboard"
     hx-trigger="load"
     hx-swap="innerHTML"
     aria-live="polite"
     aria-busy="true">
    <p class="text-base-content/50 italic">Loading...</p>
</div>

<!-- Crew (loads on first activation) -->
<div id="tab-crew" class="admin-panel hidden"
     role="tabpanel"
     aria-labelledby="tab-label-crew"
     tabindex="0"
     hx-get="/admin/api/tab/crew"
     hx-trigger="tab:crew from:body once"
     hx-swap="innerHTML"
     aria-live="polite">
</div>

<!-- Settings (loads on first activation) -->
<div id="tab-settings" class="admin-panel hidden"
     role="tabpanel"
     aria-labelledby="tab-label-settings"
     tabindex="0"
     hx-get="/admin/api/tab/settings"
     hx-trigger="tab:settings from:body once"
     hx-swap="innerHTML"
     aria-live="polite">
</div>

<!-- Relays (loads on first activation) -->
<div id="tab-relays" class="admin-panel hidden"
     role="tabpanel"
     aria-labelledby="tab-label-relays"
     tabindex="0"
     hx-get="/admin/api/tab/relays"
     hx-trigger="tab:relays from:body once"
     hx-swap="innerHTML"
     aria-live="polite">
</div>

<!-- Storage / GC (loads on first activation) -->
<div id="tab-storage" class="admin-panel hidden"
     role="tabpanel"
     aria-labelledby="tab-label-storage"
     tabindex="0"
     hx-get="/admin/api/tab/storage"
     hx-trigger="tab:storage from:body once"
     hx-swap="innerHTML"
     aria-live="polite">
</div>

<script>
(function() {
    var validTabs = ['dashboard', 'crew', 'settings', 'relays', 'storage'];
    var tabTitles = {
        dashboard: 'Dashboard',
        crew: 'Crew',
        settings: 'Settings',
        relays: 'Relays',
        storage: 'Storage'
    };

    function switchAdminTab(tabId) {
        if (validTabs.indexOf(tabId) === -1) tabId = 'dashboard';

        // Toggle panel visibility
        document.querySelectorAll('.admin-panel').forEach(function(p) {
            var isActive = p.id === 'tab-' + tabId;
            p.classList.toggle('hidden', !isActive);
        });

        // Desktop sidebar: toggle menu-active + aria-selected + aria-current
        document.querySelectorAll('.menu li[data-tab]').forEach(function(li) {
            var isActive = li.dataset.tab === tabId;
            li.classList.toggle('menu-active', isActive);
            var link = li.querySelector('a, button');
            if (link) {
                link.setAttribute('aria-selected', isActive ? 'true' : 'false');
                if (isActive) {
                    link.setAttribute('aria-current', 'page');
                } else {
                    link.removeAttribute('aria-current');
                }
                link.setAttribute('tabindex', isActive ? '0' : '-1');
            }
        });

        // Mobile: toggle btn-secondary / btn-ghost + aria-selected
        document.querySelectorAll('.admin-tab-mobile').forEach(function(a) {
            var isActive = a.dataset.tab === tabId;
            a.classList.toggle('btn-secondary', isActive);
            a.classList.toggle('btn-ghost', !isActive);
            a.setAttribute('aria-selected', isActive ? 'true' : 'false');
            if (isActive) {
                a.setAttribute('aria-current', 'page');
            } else {
                a.removeAttribute('aria-current');
            }
            a.setAttribute('tabindex', isActive ? '0' : '-1');
        });

        // Update document.title so AT users navigating by page title see the
        // active tab (WCAG 2.4.2). The server already renders "{{.Title}} -
        // Hold Admin" so we keep that suffix.
        document.title = tabTitles[tabId] + ' — Hold Admin';

        history.replaceState(null, '', '#' + tabId);
        document.body.dispatchEvent(new CustomEvent('tab:' + tabId));
    }

    // Arrow-key navigation inside a tablist. Left/Right move focus and
    // activate the next tab; Home/End jump to the first/last tab. Only
    // enabled when the event target is actually a tab.
    function handleTabKey(e, tabs) {
        var idx = tabs.indexOf(e.target);
        if (idx === -1) return;
        var next = -1;
        switch (e.key) {
            case 'ArrowLeft':
            case 'ArrowUp':
                next = (idx - 1 + tabs.length) % tabs.length;
                break;
            case 'ArrowRight':
            case 'ArrowDown':
                next = (idx + 1) % tabs.length;
                break;
            case 'Home':
                next = 0;
                break;
            case 'End':
                next = tabs.length - 1;
                break;
            default:
                return;
        }
        e.preventDefault();
        var target = tabs[next];
        switchAdminTab(target.dataset.tab);
        target.focus();
    }

    document.addEventListener('DOMContentLoaded', function() {
        // Mobile tab click handlers
        var mobileTabs = Array.from(document.querySelectorAll('.admin-tab-mobile'));
        mobileTabs.forEach(function(a) {
            a.addEventListener('click', function(e) {
                e.preventDefault();
                switchAdminTab(this.dataset.tab);
            });
            a.addEventListener('keydown', function(e) { handleTabKey(e, mobileTabs); });
        });

        // Desktop sidebar click handlers
        var desktopTabs = Array.from(document.querySelectorAll('.menu li[data-tab] a'));
        desktopTabs.forEach(function(link) {
            link.addEventListener('click', function(e) {
                e.preventDefault();
                switchAdminTab(this.parentElement.dataset.tab);
            });
            link.addEventListener('keydown', function(e) { handleTabKey(e, desktopTabs); });
        });

        // Activate tab from hash (default: dashboard). rAF deferral keeps
        // the initial state update outside the first paint.
        var rafId = requestAnimationFrame(function() {
            rafId = 0;
            var hash = window.location.hash.replace('#', '') || 'dashboard';
            switchAdminTab(hash);
        });
        // Cancel on bfcache/pageshow restore so the callback doesn't run
        // against a stale DOM.
        window.addEventListener('pagehide', function() {
            if (rafId) cancelAnimationFrame(rafId);
        }, { once: true });
    });

    // Handle browser back/forward
    window.addEventListener('hashchange', function() {
        var hash = window.location.hash.replace('#', '') || 'dashboard';
        switchAdminTab(hash);
    });

    // Clear aria-busy when the dashboard panel finishes loading.
    document.body.addEventListener('htmx:afterSettle', function(evt) {
        var elt = evt.detail && evt.detail.elt;
        if (elt && elt.classList && elt.classList.contains('admin-panel')) {
            elt.removeAttribute('aria-busy');
        }
    });
})();
</script>
{{end}}