{% 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 %}
{% import '_ui.html' as ui %}
{% call ui.head('Imaging floor', 'Operate') %}
  <span class="sub" style="display: inline-flex; align-items: center; gap: 6px"><span id="imaging-live-dot" class="dot" title="Live stream" style="background: var(--track-done)"></span>Live</span>
  {% if sessions %}
  {% call ui.more('the imaging floor') %}
    <form method="post" action="{{ url_for('imaging_delete_all') }}"
          onsubmit="return confirm('Clear all {{ clear_count }} imaging session files{{ (', including ' ~ hidden ~ ' hidden finished') if hidden else '' }}? Every row is removed; PCs still imaging reappear on their next status push.');">
      <input type="hidden" name="_csrf_token" value="{{ csrf_token() }}">
      <button type="submit" class="del">Clear all sessions</button>
    </form>
  {% endcall %}
  {% endif %}
{% endcall %}

<section class="panel floor" aria-labelledby="floor-h">
  <h2 id="floor-h" class="vh">PCs on the imaging network</h2>
  <div style="display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 16px 24px 8px">
    <div role="search" style="flex: 1 1 220px; min-width: 160px; display: flex">
      <label for="imaging-search" class="vh">Filter by serial, hostname, PC type, machine number, Intune ID, MAC, IP or stage</label>
      <input id="imaging-search" type="search" class="field" style="flex: 1; min-width: 0"
             placeholder="Serial, hostname, PC type, machine #, MAC, IP or stage" autocomplete="off">
    </div>
    <div role="group" aria-label="Show only" id="floor-filters" style="display: flex; flex-wrap: wrap; gap: 6px">
      <button type="button" class="fbtn" data-state="" aria-pressed="true">All <span class="n" data-count="all"></span></button>
      <button type="button" class="fbtn" data-state="failed" aria-pressed="false">Failed <span class="n" data-count="failed"></span></button>
      <button type="button" class="fbtn" data-state="action" aria-pressed="false">Needs action <span class="n" data-count="action"></span></button>
      <button type="button" class="fbtn" data-state="running" aria-pressed="false">In progress <span class="n" data-count="running"></span></button>
      <button type="button" class="fbtn" data-state="done" aria-pressed="false">Done <span class="n" data-count="done"></span></button>
    </div>
  </div>
  {% if hidden %}
  <div class="sub" style="padding: 0 24px 8px">{{ hidden }} finished session{{ 's' if hidden != 1 }} older than {{ window_hours }} h hidden.
    <a href="{{ url_for('imaging_dashboard', all='1') }}">Show all</a></div>
  {% elif show_all %}
  <div class="sub" style="padding: 0 24px 8px">Showing finished sessions of every age. <a href="{{ url_for('imaging_dashboard') }}">Hide old finished sessions</a></div>
  {% endif %}
  <div class="fhead" aria-hidden="true"><span>Status</span><span>PC</span><span>Stage</span></div>
  <div id="imaging-tiles">
    {% include "_imaging_tiles.html" %}
  </div>
  <div class="hidden-bar" id="floor-nomatch" hidden><span>No PC matches the filter.</span></div>
</section>

<details class="panel" style="margin-top: 22px; border-radius: 10px">
  <summary class="disc" style="padding: 0 16px; min-height: 44px"><span class="chev" aria-hidden="true">&#9662;</span>How an imaging client pushes status</summary>
  <pre class="mono" style="margin: 0; padding: 0 16px 16px 42px; white-space: pre-wrap; font-size: 12px">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-standard",
  "current_stage": "Run-ShopfloorSetup: installing the site app list",
  "stage_index": 3,
  "stage_total": 8,
  "status": "in_progress",
  "log_lines": ["last few log lines from the stage"]
}</pre>
</details>
{% 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', all='1' if show_all else None) }}";
    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;
        // Also while a password is shown, or typed but not yet made into a QR.
        var inputs = document.querySelectorAll('.laps-input');
        for (var i = 0; i < inputs.length; i++) {
            if (inputs[i].type === 'text' || inputs[i].value !== inputs[i].defaultValue) 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('var(--act)', 'EventSource unsupported - polling only');
            startPolling();
            return;
        }
        try {
            sse = new EventSource(STREAM_URL);
        } catch (e) {
            setDot('var(--fail)', 'SSE failed - polling');
            startPolling();
            return;
        }
        sse.onopen = function() {
            setDot('var(--ok)', '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('var(--fail)', '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();
    });
})();

// Copy buttons (.copy-btn) are handled globally in static/app.js.

// 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);
    } else if (e.target.classList.contains('laps-show-btn')) {
        card = e.target.closest('.laps-card');
        var inp = card && card.querySelector('.laps-input');
        if (inp) {
            var show = inp.type === 'password';
            inp.type = show ? 'text' : 'password';
            e.target.textContent = show ? 'Hide' : 'Show';
            e.target.setAttribute('aria-pressed', show ? 'true' : 'false');
        }
    }
});
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';
    var LOG_EXPANDED_KEY = 'imaging-log-expanded';
    function loadExpandedSet(key) {
        try { return new Set(JSON.parse(localStorage.getItem(key || EXPANDED_KEY) || '[]')); }
        catch (e) { return new Set(); }
    }
    function saveExpandedSet(set, key) {
        try { localStorage.setItem(key || EXPANDED_KEY, JSON.stringify(Array.from(set))); }
        catch (e) {}
    }
    // Log-tail scroll per tile, in memory only. A tile followed at the
    // bottom keeps following new lines; one scrolled up stays put.
    var logScroll = {};

    function restoreExpandedState() {
        var expanded = loadExpandedSet();
        document.querySelectorAll('.imaging-card').forEach(function(card) {
            var serial = card.getAttribute('data-serial') || card.getAttribute('data-key');
            var row = card.querySelector('details.imaging-toggle');
            if (!row) return;
            if (serial && expanded.has(serial)) row.open = true;
            if (!row._toggleBound) {
                row.addEventListener('toggle', function() {
                    var s = loadExpandedSet();
                    if (row.open) s.add(serial); else s.delete(serial);
                    saveExpandedSet(s);
                });
                row._toggleBound = true;
            }
        });
        // The nested "Log tail" <details> is re-rendered closed on every
        // refresh; keep it open (and its scroll) the same way as the tile.
        var logExpanded = loadExpandedSet(LOG_EXPANDED_KEY);
        document.querySelectorAll('.imaging-log').forEach(function(log) {
            var key = log.getAttribute('data-key');
            if (!key) return;
            if (logExpanded.has(key)) log.open = true;
            var pre = log.querySelector('.imaging-log-pre');
            if (pre) {
                var saved = logScroll[key];
                if (!saved || saved.atBottom) pre.scrollTop = pre.scrollHeight;
                else pre.scrollTop = saved.top;
                pre.addEventListener('scroll', function() {
                    logScroll[key] = {
                        top: pre.scrollTop,
                        atBottom: pre.scrollTop + pre.clientHeight >= pre.scrollHeight - 4
                    };
                });
            }
            log.addEventListener('toggle', function() {
                var s = loadExpandedSet(LOG_EXPANDED_KEY);
                if (log.open) s.add(key); else s.delete(key);
                saveExpandedSet(s, LOG_EXPANDED_KEY);
                if (log.open && pre) pre.scrollTop = pre.scrollHeight;
            });
        });
    }

    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();
    }

    var stateFilter = '';
    function applyFilter() {
        var search = document.getElementById('imaging-search');
        var q = search ? search.value.trim().toLowerCase() : '';
        var counts = {all: 0, failed: 0, action: 0, running: 0, done: 0};
        var visible = 0;
        document.querySelectorAll('.imaging-card').forEach(function(card) {
            var st = card.getAttribute('data-state') || '';
            if (st !== 'logs') { counts.all++; if (counts[st] !== undefined) counts[st]++; }
            var hay = card.getAttribute('data-filter') || '';
            var match = (q === '' || hay.indexOf(q) !== -1) && (stateFilter === '' || st === stateFilter);
            card.hidden = !match;
            if (match) visible++;
        });
        document.querySelectorAll('#floor-filters [data-count]').forEach(function(n) {
            n.textContent = counts[n.getAttribute('data-count')];
        });
        // A log-only bay that matches a search is shown: open its group.
        var logs = document.querySelector('details.floor-logs');
        if (logs) {
            var hit = Array.prototype.some.call(logs.querySelectorAll('.imaging-card'), function (c) { return !c.hidden; });
            if (q !== '' && hit) logs.open = true;
            if (!hit) logs.hidden = true; else logs.hidden = false;
        }
        var none = document.getElementById('floor-nomatch');
        if (none) none.hidden = visible > 0 || (q === '' && stateFilter === '');
    }

    function restoreLogsGroup() {
        var g = document.querySelector('details.floor-logs');
        if (!g) return;
        try { if (sessionStorage.getItem('floor-logs-open') === '1') g.open = true; } catch (e) {}
        if (!g._bound) {
            g.addEventListener('toggle', function () { try { sessionStorage.setItem('floor-logs-open', g.open ? '1' : '0'); } catch (e) {} });
            g._bound = true;
        }
    }

    window.imagingPostSwapHooks = function() {
        restoreLogsGroup();
        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);
        }
        document.querySelectorAll('#floor-filters .fbtn').forEach(function(b) {
            b.addEventListener('click', function() {
                stateFilter = b.getAttribute('data-state') || '';
                document.querySelectorAll('#floor-filters .fbtn').forEach(function(x) {
                    x.setAttribute('aria-pressed', x === b ? 'true' : 'false');
                });
                applyFilter();
            });
        });
        window.imagingPostSwapHooks();
    });
})();
</script>
{% endblock %}