// Client behaviors for the Vetting UI. Loaded in layout.templ with `defer`
// so the DOM is parsed before any listeners fire.
(function () {
    'use strict';

    // --- 1. auto-advance on substep SSE ---------------------------------

    document.body.addEventListener('htmx:sseMessage', function (ev) {
        var name = ev.detail && ev.detail.type;
        if (!name || name.indexOf('substep-') !== 0) {
            return;
        }
        setTimeout(function () {
            autoAdvance();
        }, 0);
    });

    function autoAdvance() {
        var steps = document.querySelectorAll('.step[data-stage]');
        var runningStep = null;
        steps.forEach(function (step) {
            if (step.querySelector('.substep-running')) {
                runningStep = step;
            }
        });
        if (!runningStep) {
            return;
        }
        steps.forEach(function (step) {
            if (step === runningStep) {
                if (!step.open) { step.open = true; }
                return;
            }
            if (step.open && !step.querySelector('.substep-running')) {
                if (step.classList.contains('step-failed')) { return; }
                step.open = false;
            }
        });
    }

    // --- 2. in-step search + match count --------------------------------

    document.body.addEventListener('input', function (ev) {
        var el = ev.target;
        if (!el.classList || !el.classList.contains('log-search')) {
            return;
        }
        var step = el.closest('.step');
        if (!step) { return; }
        var query = el.value.trim().toLowerCase();
        var matchCount = 0;
        step.querySelectorAll('.log-line').forEach(function (line) {
            if (!query) {
                line.style.display = '';
                line.classList.remove('log-hit');
                return;
            }
            var text = (line.textContent || '').toLowerCase();
            if (text.indexOf(query) === -1) {
                line.style.display = 'none';
                line.classList.remove('log-hit');
            } else {
                line.style.display = '';
                line.classList.add('log-hit');
                matchCount++;
            }
        });
        var counter = el.closest('.log-search-wrap').querySelector('.log-match-count');
        if (counter) {
            if (!query) {
                counter.textContent = '';
            } else if (matchCount === 0) {
                counter.textContent = 'No matches';
            } else {
                counter.textContent = matchCount + (matchCount === 1 ? ' match' : ' matches');
            }
        }
    });

    // --- 3. live duration tick ------------------------------------------

    function formatDuration(ms) {
        if (ms < 0) { ms = 0; }
        if (ms < 1000) { return Math.floor(ms) + 'ms'; }
        if (ms < 10000) { return (ms / 1000).toFixed(1) + 's'; }
        if (ms < 60000) { return Math.floor(ms / 1000) + 's'; }
        if (ms < 3600000) {
            var m = Math.floor(ms / 60000);
            var s = Math.floor((ms % 60000) / 1000);
            return m + 'm ' + s + 's';
        }
        var h = Math.floor(ms / 3600000);
        var mm = Math.floor((ms % 3600000) / 60000);
        return h + 'h ' + mm + 'm';
    }

    function tickDurations() {
        var now = Date.now();
        var nodes = document.querySelectorAll('.run-duration[data-started-at]');
        nodes.forEach(function (el) {
            var startMs = Date.parse(el.getAttribute('data-started-at'));
            if (isNaN(startMs)) { return; }
            el.textContent = formatDuration(now - startMs);
        });
    }

    setInterval(tickDurations, 1000);

    // --- 4. permalink scroll + highlight on load ------------------------

    function scrollToHash() {
        var hash = (location.hash || '').replace(/^#/, '');
        if (!hash) { return; }
        var target = document.getElementById(hash);
        if (!target) { return; }
        var step = target.closest('.step');
        if (step && !step.open) { step.open = true; }
        target.scrollIntoView({ block: 'center' });
    }

    window.addEventListener('load', scrollToHash);
    window.addEventListener('hashchange', scrollToHash);

    document.body.addEventListener('click', function (ev) {
        var a = ev.target.closest && ev.target.closest('.log-anchor');
        if (!a) { return; }
        ev.preventDefault();
        var href = a.getAttribute('href') || '';
        if (href.indexOf('#') === 0) {
            history.replaceState(null, '', href);
            scrollToHash();
        }
    });

    // --- 5. active nav indicator ----------------------------------------

    (function setActiveNav() {
        var path = location.pathname;
        var nav = document.querySelector('[data-nav]');
        if (!nav) { return; }
        nav.querySelectorAll('a').forEach(function (a) {
            var href = a.getAttribute('href');
            if (href === '/hosts/new' && path === '/hosts/new') {
                a.classList.add('nav-active');
            } else if (href === '/' && path !== '/hosts/new') {
                a.classList.add('nav-active');
            }
        });
    })();

    // --- 6. copy-to-clipboard buttons -----------------------------------

    document.body.addEventListener('click', function (ev) {
        var btn = ev.target.closest && ev.target.closest('.copy-btn');
        if (!btn) { return; }
        var wrap = btn.closest('.copyable-wrap');
        if (!wrap) { return; }
        var source = wrap.querySelector('.one-liner code, .hold-ssh');
        if (!source) { return; }
        var text = source.textContent || '';
        navigator.clipboard.writeText(text.trim()).then(function () {
            btn.textContent = 'Copied';
            btn.classList.add('copied');
            setTimeout(function () {
                btn.textContent = 'Copy';
                btn.classList.remove('copied');
            }, 2000);
        });
    });

    // --- 7. SSE connection health indicator ------------------------------

    var lastSSE = 0;
    var HEARTBEAT_INTERVAL = 15000;
    var STALE_THRESHOLD = HEARTBEAT_INTERVAL * 2.5;

    document.body.addEventListener('htmx:sseMessage', function () {
        lastSSE = Date.now();
        var hb = document.querySelector('.heartbeat');
        if (hb) {
            hb.classList.add('heartbeat-live');
            hb.classList.remove('heartbeat-stale');
        }
    });

    setInterval(function () {
        if (!lastSSE) { return; }
        var hb = document.querySelector('.heartbeat');
        if (!hb) { return; }
        if (Date.now() - lastSSE > STALE_THRESHOLD) {
            hb.classList.remove('heartbeat-live');
            hb.classList.add('heartbeat-stale');
        }
    }, 5000);

    // --- 8. inline confirmation for destructive actions ------------------

    document.body.addEventListener('submit', function (ev) {
        var form = ev.target;
        if (!form || !form.hasAttribute('data-confirm')) { return; }
        if (form.dataset.confirmed === 'yes') {
            form.removeAttribute('data-confirmed');
            return;
        }
        ev.preventDefault();
        if (form.querySelector('.confirm-overlay')) { return; }

        var msg = form.getAttribute('data-confirm');
        var btn = form.querySelector('button[type="submit"]');
        if (!btn) { return; }
        btn.style.display = 'none';

        var overlay = document.createElement('div');
        overlay.className = 'confirm-overlay';
        overlay.innerHTML =
            '<span class="confirm-msg">' + escapeHtml(msg) + '</span>' +
            '<button type="button" class="confirm-yes">Confirm</button>' +
            '<button type="button" class="confirm-no">Cancel</button>';

        form.appendChild(overlay);

        overlay.querySelector('.confirm-yes').addEventListener('click', function () {
            form.dataset.confirmed = 'yes';
            form.requestSubmit();
        });
        overlay.querySelector('.confirm-no').addEventListener('click', function () {
            overlay.remove();
            btn.style.display = '';
        });
    });

    function escapeHtml(str) {
        var div = document.createElement('div');
        div.textContent = str;
        return div.innerHTML;
    }

})();