resolve camara scan stream failure

slight fix of the scanner
Fix of the encryption processing with the Student class
2026-08-16 15:57:12 +02:00 · 2026-08-16 15:50:48 +02:00 · 2026-08-16 13:17:20 +02:00 · 2026-08-16 13:08:34 +02:00 · 2026-08-16 12:58:31 +02:00 · 2026-08-15 18:10:05 +02:00
4 changed files with 584 additions and 512 deletions
@@ -4,59 +4,60 @@

 {% block content %}
 <style>
-    /* The Dark Background Overlay */
+    /* =========================================
+       1. Modals & Overlays
+       ========================================= */
    .modal {
+        display: none; /* Managed by JS (none/flex) */
        position: fixed;
-        top: 0;
-        left: 0;
-        width: 100vw;
-        height: 100vh;
-        background-color: rgba(0, 0, 0, 0.6);
-        /* Display is managed by JS (none/flex) */
-        align-items: center; 
-        justify-content: center;
+        inset: 0; /* Modern shorthand for top: 0, right: 0, bottom: 0, left: 0 */
        z-index: 1000;
+        background-color: rgba(0, 0, 0, 0.6);
+        align-items: center;
+        justify-content: center;
+        padding: 20px;
    }

-    /* The White Modal Box */
    .modal-content {
-        background-color: #fff;
-        padding: 20px;
-        width: 80%;
-        max-width: 600px;
-        border-radius: 8px;
-        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
-
-        /* Flexbox allows the header to stay fixed while the body scrolls */
+        position: relative;
        display: flex;
        flex-direction: column;
-        max-height: 85vh;
+        width: 100%;
+        max-width: 900px; /* Consolidated from conflicting 600px/900px rules */
+        max-height: 90vh;
+        background-color: var(--ui-surface, #fff);
+        border-radius: 8px;
+        padding: 20px;
+        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
+        overflow-y: auto;
    }

-    /* The Close Button */
    .close {
-        align-self: flex-end;
+        position: absolute;
+        top: 15px;
+        right: 20px;
        color: #aaa;
        font-size: 28px;
        font-weight: bold;
-        cursor: pointer;
        line-height: 1;
-        margin-bottom: 10px;
+        cursor: pointer;
+        transition: color 0.2s ease;
    }

    .close:hover,
    .close:focus {
-        color: #000;
+        color: var(--ui-text, #000);
        text-decoration: none;
    }

-    /* The Scrollable Content Area */
    #detailContent {
        overflow-y: auto;
        padding-right: 10px;
    }

-    /* Library table-only view styles */
+    /* =========================================
+       2. Layout & Headers
+       ========================================= */
    .library-table-container {
        max-width: 1400px;
        margin: 0 auto;
@@ -79,13 +80,15 @@
        font-size: 0.95em;
    }

-    /* Library search bar */
+    /* =========================================
+       3. Search, Filter & Scan Panels
+       ========================================= */
    .library-search-bar {
-        margin-bottom: 20px;
        display: flex;
-        gap: 10px;
        flex-wrap: wrap;
        align-items: center;
+        gap: 10px;
+        margin-bottom: 20px;
    }

    .library-search-input {
@@ -95,10 +98,9 @@
        border: 1px solid #ddd;
        border-radius: 6px;
        font-size: 16px;
-        background: white;
+        background: #fff;
    }

-    /* Scanner panel */
    .library-scan-panel {
        background: var(--ui-surface);
        border: 1px solid #d9dde4;
@@ -129,26 +131,18 @@
        color: #4b5563;
    }

-    .library-scan-status.ok {
-        color: #1f7a38;
-    }
-
-    .library-scan-status.warn {
-        color: #9a6700;
-    }
-
-    .library-scan-status.error {
-        color: #b42318;
-    }
+    .library-scan-status.ok { color: #1f7a38; }
+    .library-scan-status.warn { color: #9a6700; }
+    .library-scan-status.error { color: #b42318; }

    .library-scan-reader-wrap {
        display: none;
        margin-top: 12px;
+        max-width: 460px;
+        background: var(--ui-surface);
        border: 1px solid #d9dde4;
        border-radius: 8px;
        overflow: hidden;
-        background: var(--ui-surface);
-        max-width: 460px;
    }

    .library-scan-reader {
@@ -156,14 +150,15 @@
        min-height: 280px;
    }

+    /* Filters */
    .library-filter-toggle-btn {
        padding: 10px 16px;
        background: #f0f2f5;
        border: 1px solid #ddd;
        border-radius: 6px;
-        cursor: pointer;
        font-weight: 500;
        color: var(--ui-text);
+        cursor: pointer;
        transition: all 0.2s ease;
    }

@@ -178,10 +173,9 @@
        color: #4f46e5;
    }

-    /* Filter panel */
    .library-filter-panel {
        display: none;
-        background: white;
+        background: #fff;
        border: 1px solid #ddd;
        border-radius: 8px;
        padding: 20px;
@@ -210,10 +204,10 @@
    }

    .filter-item label {
+        margin-bottom: 6px;
        font-weight: 600;
        font-size: 0.9em;
        color: var(--ui-text);
-        margin-bottom: 6px;
    }

    .filter-item input,
@@ -222,7 +216,8 @@
        border: 1px solid #ddd;
        border-radius: 4px;
        font-size: 14px;
-        background: white;
+        background: #fff;
+        transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .filter-item input:focus,
@@ -236,8 +231,8 @@
        display: flex;
        gap: 10px;
        margin-top: 15px;
-        border-top: 1px solid #eee;
        padding-top: 15px;
+        border-top: 1px solid #eee;
    }

    .filter-buttons .button {
@@ -246,11 +241,13 @@
        font-size: 14px;
    }

-    /* Library table */
+    /* =========================================
+       4. Tables & Data Display
+       ========================================= */
    .library-items-table {
        width: 100%;
+        background: #fff;
        border-collapse: collapse;
-        background: white;
        border: 1px solid #ddd;
        border-radius: 8px;
        overflow: hidden;
@@ -266,8 +263,8 @@
        padding: 14px 16px;
        text-align: left;
        font-weight: 600;
-        color: var(--ui-text);
        font-size: 0.9em;
+        color: var(--ui-text);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
@@ -288,7 +285,6 @@
        border-bottom: none;
    }

-    /* Table cells */
    .table-title {
        font-weight: 600;
        color: var(--ui-text);
@@ -302,26 +298,14 @@
        font-weight: 500;
    }

-    .status-available {
-        background: #e8f5e9;
-        color: #2e7d32;
-    }
+    .status-available { background: #e8f5e9; color: #2e7d32; }
+    .status-borrowed { background: #fff3e0; color: #e65100; }
+    .status-damaged { background: #fee2e2; color: #991b1b; }

-    .status-borrowed {
-        background: #fff3e0;
-        color: #e65100;
-    }
-
-    .status-damaged {
-        background: #fee2e2;
-        color: #991b1b;
-    }
-
-    /* Actions */
    .table-actions {
        display: flex;
-        gap: 8px;
        flex-wrap: wrap;
+        gap: 8px;
    }

    .table-actions .button {
@@ -330,26 +314,25 @@
        white-space: nowrap;
    }

-    /* Empty state */
    .library-empty-state {
-        text-align: center;
        padding: 60px 20px;
+        text-align: center;
        color: #999;
    }

    .library-empty-state h3 {
-        font-size: 1.3em;
        margin-bottom: 10px;
+        font-size: 1.3em;
        color: #666;
    }

    .library-load-row {
-        margin-top: 12px;
        display: flex;
+        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
-        flex-wrap: wrap;
+        margin-top: 12px;
    }

    .library-load-hint {
@@ -357,54 +340,9 @@
        color: #6b7280;
    }

-    /* Small confirmation popup (toast) */
-    .small-popup {
-        position: fixed;
-        bottom: 24px;
-        left: 50%;
-        transform: translateX(-50%);
-        background: rgba(17, 24, 39, 0.96);
-        color: #fff;
-        padding: 12px 16px;
-        border-radius: 8px;
-        box-shadow: 0 6px 24px rgba(2,6,23,0.6);
-        z-index: 2000;
-        display: flex;
-        gap: 10px;
-        align-items: center;
-        max-width: 90%;
-        font-size: 0.95em;
-    }
-    .small-popup.ok { background: rgba(16,185,129,0.95); color: #032; }
-    .small-popup.error { background: rgba(239,68,68,0.95); color: #210; }
-    .small-popup .close-x { margin-left: 8px; cursor: pointer; font-weight: 700; }
-
-    /* Modal styles */
-    .modal {
-        display: none;
-        position: fixed;
-        z-index: 1000;
-        left: 0;
-        top: 0;
-        width: 100%;
-        height: 100%;
-        background-color: rgba(0, 0, 0, 0.5);
-        align-items: center;
-        justify-content: center;
-        padding: 20px;
-    }
-
-    .modal-content {
-        background-color: var(--ui-surface);
-        border-radius: 8px;
-        padding: 20px;
-        max-width: 900px;
-        max-height: 90vh;
-        overflow-y: auto;
-        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
-        position: relative;
-    }
-
+    /* =========================================
+       5. Edit Grid Forms
+       ========================================= */
    .edit-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
@@ -416,10 +354,10 @@
    }

    .edit-grid label {
+        display: block;
+        margin-bottom: 4px;
        font-weight: 600;
        font-size: 0.9em;
-        margin-bottom: 4px;
-        display: block;
    }

    .edit-grid input,
@@ -437,37 +375,44 @@
        margin-top: 14px;
    }

-    .close {
-        position: absolute;
-        right: 20px;
-        top: 10px;
-        font-size: 28px;
-        font-weight: bold;
-        color: #999;
+    /* =========================================
+       6. Notifications / Toasts
+       ========================================= */
+    .small-popup {
+        position: fixed;
+        bottom: 24px;
+        left: 50%;
+        z-index: 2000;
+        display: flex;
+        align-items: center;
+        gap: 10px;
+        max-width: 90%;
+        padding: 12px 16px;
+        background: rgba(17, 24, 39, 0.96);
+        color: #fff;
+        border-radius: 8px;
+        font-size: 0.95em;
+        transform: translateX(-50%);
+        box-shadow: 0 6px 24px rgba(2,6,23,0.6);
+    }
+
+    .small-popup.ok { background: rgba(16,185,129,0.95); color: #032; }
+    .small-popup.error { background: rgba(239,68,68,0.95); color: #210; }
+
+    .small-popup .close-x {
+        margin-left: 8px;
+        font-weight: 700;
        cursor: pointer;
    }

-    .close:hover {
-        color: var(--ui-text);
-    }
-
-    /* Mobile responsive */
+    /* =========================================
+       7. Mobile Responsiveness
+       ========================================= */
    @media (max-width: 768px) {
-        .library-table-container {
-            padding: 10px;
-        }
-
-        .library-search-bar {
-            flex-direction: column;
-        }
-
-        .library-search-input {
-            width: 100%;
-        }
-
-        .library-items-table {
-            font-size: 0.85em;
-        }
+        .library-table-container { padding: 10px; }
+        .library-search-bar { flex-direction: column; }
+        .library-search-input { width: 100%; }
+        .library-items-table { font-size: 0.85em; }

        .library-items-table th,
        .library-items-table td {
@@ -479,17 +424,12 @@
            font-size: 0.75em;
        }

-        .filter-row {
-            grid-template-columns: 1fr;
-        }
-
+        .filter-row,
        .library-scan-controls {
            grid-template-columns: 1fr;
        }

-        .library-scan-reader-wrap {
-            max-width: 100%;
-        }
+        .library-scan-reader-wrap { max-width: 100%; }
    }
 </style>

@@ -865,71 +805,92 @@
        deleteLibraryItem(itemId);
    }

-    // =========================================================================
-    // 3. CORE SCANNER ROUTING ENGINE (QUAGGA2)
-    // =========================================================================
-    function startScanner(targetCallback) {
-        const readerWrap = document.getElementById('scanReaderWrap');
+    async function startScanner(callback = null) {
+        if (scannerRunning) {
+            console.warn("Scanner is already running. Stopping it first...");
+            await stopScanner();
+        }
+
+        activeScannerCallback = callback;
+
+        const scannerWrap = document.querySelector('.library-scan-reader-wrap');
        const toggleBtn = document.getElementById('toggleScannerBtn');

-        activeScannerCallback = targetCallback;
+        // 1. CRITICAL FIX: Make the container visible BEFORE Quagga initializes
+        // Quagga cannot calculate video dimensions if display is 'none'
+        if (scannerWrap) {
+            scannerWrap.style.display = 'block';
+        }

-        if (readerWrap) readerWrap.style.display = 'block';
-        setScanStatus('Initializing camera...', 'warn');
+        setScanStatus('Starte Kamera...', 'warn');

-        Quagga.init({
-            inputStream: {
-                name: "Live",
-                type: "LiveStream",
-                target: document.querySelector('#library-scanner-container'),
-                constraints: {
-                    width: 640,
-                    height: 480,
-                    facingMode: "environment"
+        // 2. Initialize Quagga with a slight delay to allow the DOM to render the block
+        setTimeout(() => {
+            Quagga.init({
+                inputStream: {
+                    name: "Live",
+                    type: "LiveStream",
+                    // This MUST match the inner div where the video should appear
+                    target: document.querySelector('.library-scan-reader'), 
+                    constraints: {
+                        width: 640,
+                        height: 480,
+                        facingMode: "environment" // Prefer back camera on mobile
+                    }
                },
-            },
-            decoder: {
-                readers: [
-                    "code_128_reader",
-                    "ean_reader",
-                    "code_39_reader",
-                    "upc_reader",
-                    "codabar_reader",
-                    "i2of5_reader"
-                ]
-            }
-        }, function(err) {
-            if (err) {
-                console.error('Scanner start failed:', err);
-                if (readerWrap) readerWrap.style.display = 'none';
-                const detail = (err && (err.message || err.name)) ? ` (${err.message || err.name})` : '';
-                setScanStatus(`Scanner konnte nicht gestartet werden${detail}`, 'error');
-                return;
-            }
+                locator: {
+                    patchSize: "medium",
+                    halfSample: true
+                },
+                decoder: {
+                    // Keep only the barcode types you actually use to improve performance
+                    readers: ["code_128_reader", "ean_reader", "code_39_reader"] 
+                },
+                locate: true
+            }, function(err) {
+                if (err) {
+                    // This will finally log the actual error (e.g., NotAllowedError) if permissions fail
+                    console.error("Quagga initialization failed:", err);
+                    setScanStatus('Kamera-Fehler: ' + (err.name || err), 'error');

-            Quagga.start();
-            scannerRunning = true;
+                    if (scannerWrap) scannerWrap.style.display = 'none';
+                    scannerRunning = false;
+                    return;
+                }

-            if (!targetCallback && toggleBtn) {
-                toggleBtn.textContent = 'Scanner stoppen';
-            }
-            setScanStatus('Scanner aktiv. Jetzt Code scannen.', 'warn');
-        });
+                Quagga.start();
+                scannerRunning = true;
+                setScanStatus('Scanner bereit.', 'ok');
+
+                if (toggleBtn) {
+                    toggleBtn.textContent = 'Scanner stoppen';
+                }
+            });
+        }, 50);
    }

-    function stopScanner() {
+    async function stopScanner() {
        if (!scannerRunning) return;

-        const readerWrap = document.getElementById('scanReaderWrap');
-        const toggleBtn = document.getElementById('toggleScannerBtn');
+        try {
+            Quagga.stop();
+        } catch (e) {
+            console.warn("Error stopping Quagga (it may not have been running):", e);
+        }

-        Quagga.stop();
        scannerRunning = false;
        activeScannerCallback = null;

-        if (readerWrap) readerWrap.style.display = 'none';
-        if (toggleBtn) toggleBtn.textContent = 'Scanner starten';
-        setScanStatus('Scanner gestoppt.', 'warn');
+        // Hide the container to free up UI space
+        const scannerWrap = document.querySelector('.library-scan-reader-wrap');
+        if (scannerWrap) {
+            scannerWrap.style.display = 'none';
+        }
+
+        const toggleBtn = document.getElementById('toggleScannerBtn');
+        if (toggleBtn) {
+            toggleBtn.textContent = 'Kamera Scanner'; // Reset button text
+        }
    }

    async function isStudentCardBarcode(code) {
@@ -232,6 +232,16 @@
            <h1>📚 Bibliotheksausweise (Bibliothek)</h1>
        </div>
        <div class="export-buttons">
+            <form method="GET" action="{{ url_for('student_card_class_barcode_download') }}" style="display: inline-flex; gap: 5px; align-items: center; background: white; padding: 2px; border-radius: 4px; border: 1px solid #ddd;">
+                <select name="class_name" required style="border: none; padding: 8px; outline: none; font-size: 14px; background: transparent; cursor: pointer;">
+                    <option value="" disabled selected>-- Klasse wählen --</option>
+                    {% for cls in available_classes %}
+                        <option value="{{ cls }}">{{ cls }}</option>
+                    {% endfor %}
+                </select>
+                <button type="submit" class="btn-print" style="background: #17a2b8; padding: 8px 12px; margin: 0;">📤 PDF</button>
+            </form>
+
            <a href="{{ url_for('student_card_barcode_download') }}" class="btn-print" style="background: #28a745;">📥 Alle Ausweise (PDF)</a>
            <a href="{{ url_for('library_admin') }}" class="btn btn-primary">← Zur Bibliotheks-Upload</a>
        </div>
@@ -836,7 +836,7 @@
                            <!-- Options will be loaded by JavaScript -->
                        </select>
                    </div>
-                    <div class="formupload_admin-group">
+                    <div class="form-group">
                        <label for="filter2-4">Wert 4:</label>
                        <select id="filter2-4" name="filter2" class="filter-dropdown-select">
                            <option value="">-- Optional --</option>
@@ -876,11 +876,11 @@
            </div>


-            <!-- Image upload (hidden for library mode) -->
+            <!-- Image upload -->
            <div class="form-group">
-                <label for="images">Bilder/Videos:</label>
-                <input type="file" id="images" name="images" accept=".jpg, .jpeg, .png, .gif, .mp4, .mov, .avi, .mkv, .webm, .flv, .m4v, .3gp" multiple>
-                <div class="allowed-formats">Erlaubte Formate: JPG, JPEG, PNG, GIF, MP4, MOV, AVI, MKV, WEBM, FLV, M4V, 3GP</div>
+                <label for="images">Bilder:</label>
+                <input type="file" id="images" name="images" accept=".jpg, .jpeg, .png, .gif" multiple>
+                <div class="allowed-formats">Erlaubte Formate: JPG, JPEG, PNG, GIF</div>
                <!-- Add image preview area -->
                <div class="image-preview-container" id="image-preview-container"></div>
            </div>
@@ -1857,28 +1857,25 @@
    function setupImagePreview() {
        const imageInput = document.getElementById('images');
        const previewContainer = document.getElementById('image-preview-container');
-        
+
        if (imageInput && previewContainer) {
            imageInput.addEventListener('change', function(e) {
                previewContainer.innerHTML = '';
-                
+
                const files = e.target.files;
-                
-                // Validate file types before preview
-                const allowedTypes = ['image/jpeg', 'image/jpg', 'image/png', 'image/gif', 
-                                    'video/mp4', 'video/quicktime', 'video/x-msvideo', 'video/x-matroska', 
-                                    'video/webm', 'video/x-flv', 'video/mp4', 'video/3gpp'];
-                let hasInvalidFile = false;
-                
+
+                // Validate file types before preview (Strictly Images)
+                const allowedTypes = ['image/jpeg', 'image/jpg', 'image/png', 'image/gif'];
+
                for (let i = 0; i < files.length; i++) {
                    if (!allowedTypes.includes(files[i].type)) {
-                        hasInvalidFile = true;
                        // Clear the file input to prevent submission
                        imageInput.value = '';
-                        previewContainer.innerHTML = '<div class="error-message">Fehler: Datei "' + files[i].name + '" hat ein nicht unterstütztes Format. Erlaubte Formate: JPG, JPEG, PNG, GIF, MP4, MOV, AVI, MKV, WEBM, FLV, M4V, 3GP</div>';
+                        previewContainer.innerHTML = '<div class="error-message">Fehler: Datei "' + files[i].name + '" hat ein nicht unterstütztes Format. Erlaubte Formate: JPG, JPEG, PNG, GIF</div>';
                        return; // Stop processing
                    }
                }
+
                for (let i = 0; i < files.length; i++) {
                    const file = files[i];
                    if (file.type.startsWith('image/')) {
@@ -1893,17 +1890,6 @@
                            previewContainer.appendChild(preview);
                        };
                        reader.readAsDataURL(file);
-                    } else if (file.type.startsWith('video/')) {
-                        const preview = document.createElement('div');
-                        preview.className = 'image-preview video-preview';
-                        preview.innerHTML = `
-                            <div class="video-placeholder">
-                                <div class="video-icon">🎥</div>
-                                <div class="video-name">${file.name}</div>
-                            </div>
-                            <button type="button" class="remove-image" onclick="removeImagePreview(this, ${i})">×</button>
-                        `;
-                        previewContainer.appendChild(preview);
                    }
                }
            });
Author	SHA1	Message	Date
Aiirondev_dev	fe075938d7	resolve camara scan stream failure Release Inventarsystem / release-docker (push) Successful in 2m15s Details	2026-08-16 15:57:12 +02:00
Aiirondev_dev	0ef928efd8	slight fix of the scanner Release Inventarsystem / release-docker (push) Successful in 2m14s Details	2026-08-16 15:50:48 +02:00
Aiirondev_dev	1299140823	Fix of the encryption processing with the Student class Release Inventarsystem / release-docker (push) Successful in 2m14s Details	2026-08-16 13:17:20 +02:00
Aiirondev_dev	ea48d5c28a	decryption of the parsed fields Release Inventarsystem / release-docker (push) Successful in 2m15s Details	2026-08-16 13:08:34 +02:00
Aiirondev_dev	514065f4af	fixe of a list error Release Inventarsystem / release-docker (push) Successful in 3m7s Details	2026-08-16 12:58:31 +02:00
Aiirondev_dev	90da8487f2	feat(student-cards): add class-specific PDF export with dynamic dropdown Release Inventarsystem / release-docker (push) Successful in 2m16s Details - Implement /student_card_class_barcode_download route to filter student cards by class - Dynamically extract unique class names from the database for frontend selection - Update student_cards_admin.html to replace the text input with a class selection dropdown	2026-08-15 18:10:05 +02:00
Aiirondev_dev	b1ca358d41	Cleanup of the front end and backend of the upload function to only allow images and no videos because of space and memory reasons as well as hardening the uploading process. Release Inventarsystem / release-docker (push) Successful in 2m15s Details	2026-08-15 01:38:35 +02:00
Aiirondev_dev	47cba5865d	Removal of dupolicate function. Release Inventarsystem / release-docker (push) Successful in 4m55s Details	2026-08-15 01:33:38 +02:00
Aiirondev_dev	4a776872e0	Improvement of the style for the Library Module Release Inventarsystem / release-docker (push) Successful in 2m15s Details	2026-08-15 00:08:13 +02:00