{% extends "base.html" %}
{% block title %}Imaging Progress - PXE Server Manager{% endblock %}

{% block extra_head %}
{# Tile refresh is driven by SSE (/imaging/stream) with a polling fallback. #}
{# Replacing the full-page reload preserves scroll, filter input, expanded #}
{# tile state, and LAPS QR input text across refreshes.                    #}
<script>
function scheduleImagingReload() {
  // Polling fallback only; SSE is the primary path. Initialized in
  // imaging-refresh.js block at the bottom of the page.
}
function cancelImagingReload() {
  if (window._imagingPollTimer) { clearTimeout(window._imagingPollTimer); window._imagingPollTimer = null; }
}
</script>
{% endblock %}

{% block content %}

<div class="d-flex justify-content-between align-items-center mb-2">
  <div>
    <h2 class="mb-0">Imaging Progress</h2>
    <small class="text-muted">Live via SSE (15s polling fallback). Client pushes -> <code>/imaging/status</code>; log-inferred bays in yellow.</small>
  </div>
  <div class="d-flex align-items-center gap-2">
    <span id="imaging-live-dot" class="status-dot" title="live stream" style="background-color:#6c757d;"></span>
    <span class="badge bg-secondary fs-6"><span id="visible-count">{{ sessions|length }}</span>/<span id="total-count">{{ sessions|length }}</span></span>
    {% if sessions %}
    <form method="post" action="{{ url_for('imaging_delete_all') }}"
          onsubmit="return confirm('Clear all {{ sessions|length }} imaging session(s)? This wipes every tile from the dashboard. Live re-images will repopulate on next status push.');"
          style="display:inline;">
      <input type="hidden" name="_csrf_token" value="{{ csrf_token() }}">
      <button type="submit" class="btn btn-sm btn-outline-danger">Clear all</button>
    </form>
    {% endif %}
  </div>
</div>

<div class="mb-3">
  <input id="imaging-search" type="search" class="form-control form-control-sm"
         placeholder="Filter by serial, hostname, pctype, machine#, Intune id, MAC, IP, stage name, stage-N, status, source (client|inferred)"
         autocomplete="off">
</div>

{% if not sessions %}
<div id="imaging-empty" class="card">
  <div class="card-body text-center text-muted py-5">
    <p class="mb-1">No imaging sessions yet.</p>
    <p class="small mb-0">A PC being imaged will post status here, or appear
      automatically once it touches DHCP / TFTP / boot.wim.</p>
  </div>
</div>
{% endif %}

<div id="imaging-tiles">
  {% include "_imaging_tiles.html" %}
</div>


<div class="card mt-3">
  <div class="card-body small text-muted">
    <strong>How to push status from an imaging client:</strong>
    <pre class="mb-0 mt-2">POST http://172.16.9.1:9009/imaging/status
Content-Type: application/json

{
  "serial": "4HBLF33",
  "mac": "e4:54:e8:dc:b1:f0",
  "hostname_target": "EDNMG3D4",
  "pctype": "gea-shopfloor-keyence",
  "machinenumber": "9999",
  "current_stage": "Run-ShopfloorSetup: 09-Setup-Keyence",
  "stage_index": 7,
  "stage_total": 9,
  "status": "in_progress",
  "log_lines": ["last few log lines from the stage"]
}</pre>
  </div>
</div>

{% endblock %}

{% block extra_scripts %}
<script>
// -------- Live refresh: SSE primary, polling fallback --------
// Rebuilds the #imaging-tiles inner HTML from /imaging/tiles when the
// server signals a state change. Preserves scroll, filter input value,
// and any LAPS input that the operator is actively editing.
(function() {
    var TILES_URL  = "{{ url_for('imaging_tiles_partial') }}";
    var STREAM_URL = "{{ url_for('imaging_stream') }}";
    var POLL_MS    = 15000;
    var lastHash   = null;
    var sse        = null;
    var dot        = function() { return document.getElementById('imaging-live-dot'); };

    function setDot(color, title) {
        var d = dot();
        if (d) { d.style.backgroundColor = color; d.title = title || ''; }
    }

    function lapsInputIsDirty() {
        // Skip the tile swap if any LAPS input is focused (operator is
        // mid-paste) OR has unsaved text that differs from the server-side
        // copy. The next refresh after they hit Make-QR will catch up.
        var active = document.activeElement;
        if (active && active.classList && active.classList.contains('laps-input')) return true;
        return false;
    }

    function refreshTiles(force) {
        if (!force && lapsInputIsDirty()) return;
        fetch(TILES_URL, { credentials: 'same-origin' })
            .then(function(r) { return r.text(); })
            .then(function(html) {
                var container = document.getElementById('imaging-tiles');
                if (!container) return;
                container.innerHTML = html;
                if (typeof window.imagingPostSwapHooks === 'function') {
                    window.imagingPostSwapHooks();
                }
            })
            .catch(function(err) { console.error('refreshTiles failed:', err); });
    }

    function startPolling() {
        if (window._imagingPollTimer) return;
        window._imagingPollTimer = setInterval(function() {
            refreshTiles(false);
        }, POLL_MS);
    }

    function stopPolling() {
        if (window._imagingPollTimer) {
            clearInterval(window._imagingPollTimer);
            window._imagingPollTimer = null;
        }
    }

    function startSSE() {
        if (!window.EventSource) {
            setDot('#ffc107', 'EventSource unsupported - polling only');
            startPolling();
            return;
        }
        try {
            sse = new EventSource(STREAM_URL);
        } catch (e) {
            setDot('#dc3545', 'SSE failed - polling');
            startPolling();
            return;
        }
        sse.onopen = function() {
            setDot('#198754', 'live stream connected');
            stopPolling();
        };
        sse.onmessage = function(ev) {
            var data;
            try { data = JSON.parse(ev.data); } catch (e) { return; }
            if (!data || data.hash === lastHash) return;
            lastHash = data.hash;
            refreshTiles(false);
        };
        sse.onerror = function() {
            setDot('#dc3545', 'live stream lost - polling fallback');
            try { sse.close(); } catch (e) {}
            sse = null;
            startPolling();
            // Try to reconnect SSE after a backoff.
            setTimeout(startSSE, 10000);
        };
    }

    // Expose so external code (LAPS, filter) can trigger an immediate
    // refresh after user action.
    window.imagingRefreshNow = function() { refreshTiles(true); };

    window.addEventListener('DOMContentLoaded', function() {
        startSSE();
    });
})();

function copyText(text) {
    // Modern path - only works over HTTPS or localhost
    if (navigator.clipboard && window.isSecureContext) {
        return navigator.clipboard.writeText(text);
    }
    // Legacy fallback for plain HTTP
    return new Promise(function(resolve, reject) {
        var ta = document.createElement('textarea');
        ta.value = text;
        ta.style.position = 'fixed';
        ta.style.left = '-9999px';
        ta.style.top = '0';
        document.body.appendChild(ta);
        ta.focus();
        ta.select();
        try {
            var ok = document.execCommand('copy');
            document.body.removeChild(ta);
            if (ok) resolve(); else reject(new Error('execCommand returned false'));
        } catch (err) {
            document.body.removeChild(ta);
            reject(err);
        }
    });
}

function flashCopied(btn, success) {
    var origText = btn.dataset.origText || btn.textContent;
    btn.dataset.origText = origText;
    if (success) {
        btn.textContent = 'copied!';
        btn.classList.remove('btn-outline-secondary');
        btn.classList.add('btn-success');
        btn.style.transform = 'scale(1.15)';
        setTimeout(function() {
            btn.textContent = origText;
            btn.classList.remove('btn-success');
            btn.classList.add('btn-outline-secondary');
            btn.style.transform = 'scale(1)';
        }, 1200);
    } else {
        btn.textContent = 'failed';
        btn.classList.remove('btn-outline-secondary');
        btn.classList.add('btn-danger');
        setTimeout(function() {
            btn.textContent = origText;
            btn.classList.remove('btn-danger');
            btn.classList.add('btn-outline-secondary');
        }, 1500);
    }
}

document.addEventListener('click', function(e) {
    var btn = e.target.closest('.copy-btn');
    if (!btn) return;
    var text = btn.getAttribute('data-copy-text');
    if (!text) return;
    copyText(text).then(function() { flashCopied(btn, true); })
                  .catch(function(err) { console.error('copy failed:', err); flashCopied(btn, false); });
});

// LAPS password QR. Persisted server-side per bay so it survives the
// 5s dashboard refresh. Stays put until the operator hits Clear (or
// daily server reset). Password is plain in the session JSON - air-gapped
// PXE LAN + daily reset acceptable risk per ops.
function lapsCsrfToken() {
    var m = document.querySelector('meta[name=csrf-token]');
    return m ? m.getAttribute('content') : '';
}
function lapsPersist(serial, password) {
    return fetch('/imaging/' + encodeURIComponent(serial) + '/laps', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': lapsCsrfToken() },
        body: JSON.stringify({ password: password })
    });
}
function renderLapsQR(card, opts) {
    opts = opts || {};
    var input     = card.querySelector('.laps-input');
    var container = card.querySelector('.laps-qr-container');
    var makeBtn   = card.querySelector('.laps-make-btn');
    var clearBtn  = card.querySelector('.laps-clear-btn');
    var serial    = card.getAttribute('data-serial');
    var text = input.value;
    if (!text) { input.focus(); return; }
    try {
        var qr = qrcode(0, 'M');
        qr.addData(text);
        qr.make();
        var modules = qr.getModuleCount();
        var size = 280;
        var cellSize = Math.max(1, Math.floor(size / (modules + 8)));
        container.innerHTML = qr.createImgTag(cellSize, 4);
        makeBtn.textContent = 'Update QR';
        clearBtn.style.display = '';
    } catch (err) {
        container.textContent = 'QR error: ' + err;
    }
    if (!opts.skipPersist && serial) {
        lapsPersist(serial, text).catch(function(e) { console.error('LAPS persist failed:', e); });
    }
}
function clearLapsQR(card) {
    var input     = card.querySelector('.laps-input');
    var container = card.querySelector('.laps-qr-container');
    var makeBtn   = card.querySelector('.laps-make-btn');
    var clearBtn  = card.querySelector('.laps-clear-btn');
    var serial    = card.getAttribute('data-serial');
    input.value = '';
    container.innerHTML = '';
    makeBtn.textContent = 'Make QR';
    clearBtn.style.display = 'none';
    if (serial) {
        lapsPersist(serial, '').catch(function(e) { console.error('LAPS clear failed:', e); });
    }
}
document.addEventListener('click', function(e) {
    var card;
    if (e.target.classList.contains('laps-make-btn')) {
        card = e.target.closest('.laps-card');
        if (card) renderLapsQR(card);
    } else if (e.target.classList.contains('laps-clear-btn')) {
        card = e.target.closest('.laps-card');
        if (card) clearLapsQR(card);
    }
});
document.addEventListener('keydown', function(e) {
    if (e.key === 'Enter' && e.target.classList.contains('laps-input')) {
        var card = e.target.closest('.laps-card');
        if (card) { e.preventDefault(); renderLapsQR(card); }
    }
});
// Per-tile hooks that must re-run after every tile-swap. Called on
// DOMContentLoaded for first paint, then by the SSE/polling refresh after
// it replaces the innerHTML of #imaging-tiles.
(function() {
    var EXPANDED_KEY = 'imaging-expanded';
    function loadExpandedSet() {
        try { return new Set(JSON.parse(localStorage.getItem(EXPANDED_KEY) || '[]')); }
        catch (e) { return new Set(); }
    }
    function saveExpandedSet(set) {
        try { localStorage.setItem(EXPANDED_KEY, JSON.stringify(Array.from(set))); }
        catch (e) {}
    }

    function restoreExpandedState() {
        var expanded = loadExpandedSet();
        document.querySelectorAll('.imaging-card').forEach(function(card) {
            var serial = card.getAttribute('data-serial') || card.getAttribute('data-key');
            if (serial && expanded.has(serial)) card.open = true;
            if (!card._toggleBound) {
                card.addEventListener('toggle', function() {
                    var s = loadExpandedSet();
                    if (card.open) s.add(serial); else s.delete(serial);
                    saveExpandedSet(s);
                });
                card._toggleBound = true;
            }
        });
    }

    function autoRenderLapsQRs() {
        document.querySelectorAll('.laps-card').forEach(function(card) {
            var input = card.querySelector('.laps-input');
            var container = card.querySelector('.laps-qr-container');
            if (input && input.value && container && !container.innerHTML.trim()) {
                renderLapsQR(card, { skipPersist: true });
            }
        });
    }

    function renderIntuneQRs() {
        // qr-render.js looks for [data-qr] and renders an image. It runs on
        // initial DOMContentLoaded but not after a tile-swap. Re-run if the
        // hook is exposed; otherwise no-op.
        if (typeof window.renderAllQRs === 'function') window.renderAllQRs();
    }

    function applyFilter() {
        var search = document.getElementById('imaging-search');
        var counter = document.getElementById('visible-count');
        var total = document.getElementById('total-count');
        if (!search) return;
        var q = search.value.trim().toLowerCase();
        var visible = 0, totalN = 0;
        document.querySelectorAll('.imaging-card').forEach(function(card) {
            totalN++;
            var hay = card.getAttribute('data-filter') || '';
            var match = (q === '') || hay.indexOf(q) !== -1;
            card.style.display = match ? '' : 'none';
            if (match) visible++;
        });
        if (counter) counter.textContent = visible;
        if (total) total.textContent = totalN;
    }

    window.imagingPostSwapHooks = function() {
        restoreExpandedState();
        autoRenderLapsQRs();
        renderIntuneQRs();
        applyFilter();
    };

    window.addEventListener('DOMContentLoaded', function() {
        // Search input is rendered outside #imaging-tiles, so its listeners
        // only bind once.
        var search = document.getElementById('imaging-search');
        if (search) {
            search.addEventListener('input', applyFilter);
        }
        window.imagingPostSwapHooks();
    });
})();
</script>
{% endblock %}