Files
Inventarsystem/Web/templates/library.html
T

753 lines
28 KiB
HTML

{% extends "base.html" %}
{% block title %}Bibliothek - {{ APP_VERSION }}{% endblock %}
{% block content %}
<div class="content-container">
<!-- Header Section -->
<div class="header-section">
<div class="header-title-group">
<h1>📚 Bibliothek</h1>
<p class="subtitle">Bücher, CDs und weitere Medien</p>
</div>
</div>
<!-- Search & Filter Section -->
<div class="search-filter-section">
<input type="text" id="searchInput" placeholder="Nach Titel, Autor, ISBN suchen..." class="search-input">
<div class="filter-group" id="filterGroup">
<button class="filter-btn" id="filterBtn" aria-expanded="false" aria-label="Filter öffnen">
🔍 Filter <span class="filter-arrow"></span>
</button>
<div class="filter-dropdown" id="filterDropdown" style="display: none;">
<div class="filter-section">
<h4>Medientyp</h4>
<div class="filter-options">
<label><input type="checkbox" class="filter-checkbox" data-filter="type" value="book"> Buch</label>
<label><input type="checkbox" class="filter-checkbox" data-filter="type" value="cd"> CD/DVD</label>
<label><input type="checkbox" class="filter-checkbox" data-filter="type" value="other"> Sonstige</label>
</div>
</div>
<div class="filter-section">
<h4>Status</h4>
<div class="filter-options">
<label><input type="checkbox" class="filter-checkbox" data-filter="status" value="available"> Verfügbar</label>
<label><input type="checkbox" class="filter-checkbox" data-filter="status" value="borrowed"> Ausgeliehen</label>
<label><input type="checkbox" class="filter-checkbox" data-filter="status" value="reserved"> Reserviert</label>
</div>
</div>
<button id="clearFiltersBtn" class="button">Filter zurücksetzen</button>
</div>
</div>
<!-- Barcode Scanner -->
<button id="scannerBtn" class="scan-button" aria-expanded="false" aria-label="Scanner öffnen">
📱 Scanner <span class="scanner-arrow"></span>
</button>
</div>
<!-- Scanner Panel -->
<div id="qrContainer" class="qr-container" style="display: none;">
<div id="qr-reader" style="width: auto; height: 300px;"></div>
<span id="qr-result" style="display: none;"></span>
</div>
<!-- Table Header (only in table mode) -->
<div class="library-table-wrapper">
<div class="table-header" id="tableHeader" style="display: none;">
<div class="table-row">
<div class="table-cell title-cell">Titel</div>
<div class="table-cell author-cell">Autor/Künstler</div>
<div class="table-cell isbn-cell">ISBN/Code</div>
<div class="table-cell type-cell">Typ</div>
<div class="table-cell status-cell">Status</div>
<div class="table-cell actions-cell">Aktionen</div>
</div>
</div>
<!-- Items Container -->
<div id="itemsContainer" class="items-container">
{% if library_items %}
{% for item in library_items %}
<div class="item-card library-item" data-item-id="{{ item._id }}" data-type="{{ item.get('ItemType', 'book') }}" data-status="{{ 'borrowed' if item.get('Verfuegbar') == False else 'available' }}">
<!-- Card Mode View -->
<div class="item-content card-mode">
<div class="item-image-wrapper">
{% if item.get('Image') %}
<img src="/uploads/{{ item.Image }}" alt="{{ item.Name }}" class="item-image">
{% else %}
<div class="placeholder-image">📚</div>
{% endif %}
</div>
<div class="item-details">
<h3 class="item-name">{{ item.Name }}</h3>
{% if item.get('Author') %}
<p class="item-author">Von: {{ item.Author }}</p>
{% endif %}
{% if item.get('ISBN') %}
<p class="item-isbn">ISBN: {{ item.ISBN }}</p>
{% endif %}
<div class="item-meta">
<span class="item-type">{{ item.get('ItemType', 'Medium') }}</span>
<span class="item-status {% if item.get('Verfuegbar') == False %}borrowed{% else %}available{% endif %}">
{% if item.get('Verfuegbar') == False %}Ausgeliehen{% else %}Verfügbar{% endif %}
</span>
</div>
</div>
</div>
<!-- Table Mode View -->
<div class="item-content table-mode" style="display: none;">
<div class="table-row">
<div class="table-cell title-cell">
<span class="descriptor">Titel:</span>
<span class="value">{{ item.Name }}</span>
</div>
<div class="table-cell author-cell">
<span class="descriptor">Autor:</span>
<span class="value">{{ item.get('Author', '—') }}</span>
</div>
<div class="table-cell isbn-cell">
<span class="descriptor">ISBN:</span>
<span class="value">{{ item.get('ISBN', '—') }}</span>
</div>
<div class="table-cell type-cell">
<span class="descriptor">Typ:</span>
<span class="value">{{ item.get('ItemType', 'Medium') }}</span>
</div>
<div class="table-cell status-cell">
<span class="descriptor">Status:</span>
<span class="value {% if item.get('Verfuegbar') == False %}borrowed{% else %}available{% endif %}">
{% if item.get('Verfuegbar') == False %}Ausgeliehen{% else %}Verfügbar{% endif %}
</span>
</div>
<div class="table-cell actions-cell">
<button class="action-button details-btn" data-item-id="{{ item._id }}">Details</button>
</div>
</div>
</div>
<!-- Action Buttons (Card Mode) -->
<div class="item-actions card-mode" style="display: flex;">
<button class="action-button details-btn" data-item-id="{{ item._id }}">Details</button>
{% if item.get('Verfuegbar') == True %}
<button class="action-button borrow-btn" data-item-id="{{ item._id }}">Ausleihen</button>
{% else %}
<button class="action-button return-btn" data-item-id="{{ item._id }}" disabled>Ausgeliehen</button>
{% endif %}
</div>
</div>
{% endfor %}
{% else %}
<div class="empty-state">
<p>Keine Bibliotheks-Medien gefunden</p>
</div>
{% endif %}
</div>
</div>
</div>
<!-- Detail Modal -->
<div id="detailModal" class="modal" style="display: none;">
<div class="modal-content">
<button class="modal-close" aria-label="Schließen"></button>
<div class="modal-body" id="modalBody">
<!-- Filled by JavaScript -->
</div>
</div>
</div>
<!-- Borrow Modal -->
<div id="borrowModal" class="modal" style="display: none;">
<div class="modal-content">
<h2>Ausleihen</h2>
<form id="borrowForm">
<input type="hidden" id="borrowItemId" name="item_id">
<div class="form-group">
<label for="studentIdInput">Schülerausweis-ID (optional):</label>
<input type="text" id="studentIdInput" name="student_id" placeholder="Ausweis scannen oder eingeben" class="form-input">
</div>
<div class="form-group">
<label for="borrowDaysInput">Ausleih-Dauer (Tage):</label>
<input type="number" id="borrowDaysInput" name="borrow_days" min="1" max="365" class="form-input" value="14">
</div>
<div class="form-actions">
<button type="submit" class="button primary-button">Ausleihen</button>
<button type="button" class="button cancel-button" onclick="document.getElementById('borrowModal').style.display='none'">Abbrechen</button>
</div>
</form>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/@ericblade/quagga2/dist/quagga.js"></script>
<script>
// View mode persistence
const LIBRARY_VIEW_MODE_KEY = 'inventarLibraryViewMode';
const MOBILE_LIBRARY_MAX_WIDTH = 900;
const MOBILE_LIBRARY_MIN_ITEMS = 24;
function isMobileViewport() {
return window.matchMedia(`(max-width: ${MOBILE_LIBRARY_MAX_WIDTH}px)`).matches;
}
function setViewMode(mode) {
localStorage.setItem(LIBRARY_VIEW_MODE_KEY, mode);
const container = document.getElementById('itemsContainer');
const tableHeader = document.getElementById('tableHeader');
const renderedItems = Array.from(container.querySelectorAll('.item-card'));
const virtualizationState = window.mobileLibraryVirtualizationState || null;
const detachedItems = virtualizationState && virtualizationState.active && Array.isArray(virtualizationState.items)
? virtualizationState.items.filter(item => !container.contains(item))
: [];
const items = [...renderedItems, ...detachedItems.filter(item => !container.contains(item))];
items.forEach(item => {
const cardContent = item.querySelector('.item-content.card-mode');
const cardActions = item.querySelector('.item-actions.card-mode');
const tableContent = item.querySelector('.item-content.table-mode');
if (mode === 'table') {
if (cardContent) cardContent.style.display = 'none';
if (cardActions) cardActions.style.display = 'none';
if (tableContent) tableContent.style.display = 'block';
} else {
if (cardContent) cardContent.style.display = 'flex';
if (cardActions) cardActions.style.display = 'flex';
if (tableContent) tableContent.style.display = 'none';
}
});
tableHeader.style.display = mode === 'table' ? 'block' : 'none';
document.getElementById('viewModeToggle').classList.toggle('open', mode === 'table');
}
function initMobileWindowedLibraryLoading() {
const container = document.getElementById('itemsContainer');
if (!container) {
return;
}
if (!window.mobileLibraryVirtualizationState) {
window.mobileLibraryVirtualizationState = {
active: false,
items: [],
topSpacer: null,
bottomSpacer: null,
averageItemHeight: Math.max(Math.round(window.innerHeight * 0.35), 230),
lastStart: -1,
lastEnd: -1,
framePending: false,
scrollListener: null,
resizeListener: null,
initialized: false
};
}
const state = window.mobileLibraryVirtualizationState;
function restoreAllImages() {
state.items.forEach(item => {
const image = item.querySelector('img.item-image');
if (!image) {
return;
}
const originalSrc = image.dataset.mobileSrc || '';
if (!image.getAttribute('src') && originalSrc) {
image.setAttribute('src', originalSrc);
}
});
}
function updateImageMemory(startIndex, endIndex) {
const imageBuffer = 4;
state.items.forEach((item, index) => {
const image = item.querySelector('img.item-image');
if (!image) {
return;
}
if (!image.dataset.mobileSrc) {
image.dataset.mobileSrc = image.getAttribute('src') || '';
}
image.loading = 'lazy';
image.decoding = 'async';
const shouldKeepLoaded = index >= startIndex - imageBuffer && index < endIndex + imageBuffer;
if (shouldKeepLoaded) {
if (!image.getAttribute('src') && image.dataset.mobileSrc) {
image.setAttribute('src', image.dataset.mobileSrc);
}
return;
}
if (image.getAttribute('src')) {
image.removeAttribute('src');
}
});
}
function renderVisibleWindow() {
if (!state.active || !state.topSpacer || !state.bottomSpacer) {
return;
}
const viewportHeight = window.innerHeight || 800;
const scrollTop = window.scrollY || window.pageYOffset || 0;
const renderBuffer = viewportHeight * 1.5;
let startIndex = Math.max(0, Math.floor((scrollTop - renderBuffer) / state.averageItemHeight));
let endIndex = Math.min(state.items.length, Math.ceil((scrollTop + viewportHeight + renderBuffer) / state.averageItemHeight));
if (endIndex - startIndex < 14) {
endIndex = Math.min(state.items.length, startIndex + 14);
}
if (startIndex === state.lastStart && endIndex === state.lastEnd) {
return;
}
state.lastStart = startIndex;
state.lastEnd = endIndex;
while (state.topSpacer.nextSibling && state.topSpacer.nextSibling !== state.bottomSpacer) {
state.topSpacer.nextSibling.remove();
}
const fragment = document.createDocumentFragment();
for (let index = startIndex; index < endIndex; index += 1) {
fragment.appendChild(state.items[index]);
}
container.insertBefore(fragment, state.bottomSpacer);
let measuredHeightSum = 0;
let measuredCount = 0;
for (let index = startIndex; index < endIndex; index += 1) {
const height = state.items[index].getBoundingClientRect().height;
if (height > 0) {
measuredHeightSum += height;
measuredCount += 1;
}
}
if (measuredCount > 0) {
const measuredAverage = measuredHeightSum / measuredCount;
state.averageItemHeight = Math.round((state.averageItemHeight * 3 + measuredAverage) / 4);
}
state.topSpacer.style.height = `${Math.max(0, startIndex * state.averageItemHeight)}px`;
state.bottomSpacer.style.height = `${Math.max(0, (state.items.length - endIndex) * state.averageItemHeight)}px`;
updateImageMemory(startIndex, endIndex);
}
function scheduleWindowRender() {
if (!state.active || state.framePending) {
return;
}
state.framePending = true;
requestAnimationFrame(() => {
state.framePending = false;
renderVisibleWindow();
});
}
function activateVirtualization() {
if (state.active) {
return;
}
if (!Array.isArray(state.items) || state.items.length === 0) {
state.items = Array.from(container.querySelectorAll('.library-item'));
}
if (state.items.length <= MOBILE_LIBRARY_MIN_ITEMS) {
return;
}
state.topSpacer = document.createElement('div');
state.topSpacer.className = 'mobile-window-spacer top';
state.bottomSpacer = document.createElement('div');
state.bottomSpacer.className = 'mobile-window-spacer bottom';
state.items.forEach(item => item.remove());
container.appendChild(state.topSpacer);
container.appendChild(state.bottomSpacer);
state.lastStart = -1;
state.lastEnd = -1;
state.framePending = false;
state.active = true;
if (!state.scrollListener) {
state.scrollListener = () => scheduleWindowRender();
window.addEventListener('scroll', state.scrollListener, { passive: true });
}
scheduleWindowRender();
}
function deactivateVirtualization() {
if (!state.active) {
if (!Array.isArray(state.items) || state.items.length === 0) {
state.items = Array.from(container.querySelectorAll('.library-item'));
}
return;
}
if (state.scrollListener) {
window.removeEventListener('scroll', state.scrollListener);
state.scrollListener = null;
}
if (state.topSpacer && state.topSpacer.parentNode === container) {
state.topSpacer.remove();
}
if (state.bottomSpacer && state.bottomSpacer.parentNode === container) {
state.bottomSpacer.remove();
}
const fragment = document.createDocumentFragment();
state.items.forEach(item => fragment.appendChild(item));
container.appendChild(fragment);
restoreAllImages();
state.topSpacer = null;
state.bottomSpacer = null;
state.lastStart = -1;
state.lastEnd = -1;
state.framePending = false;
state.active = false;
const currentMode = localStorage.getItem(LIBRARY_VIEW_MODE_KEY) || 'card';
setViewMode(currentMode);
}
function syncVirtualizationWithViewport() {
if (!Array.isArray(state.items) || state.items.length === 0) {
state.items = Array.from(container.querySelectorAll('.library-item'));
}
const shouldVirtualize = isMobileViewport() && state.items.length > MOBILE_LIBRARY_MIN_ITEMS;
if (shouldVirtualize) {
activateVirtualization();
scheduleWindowRender();
} else {
deactivateVirtualization();
}
}
if (!state.initialized) {
state.resizeListener = () => syncVirtualizationWithViewport();
window.addEventListener('resize', state.resizeListener, { passive: true });
state.initialized = true;
}
syncVirtualizationWithViewport();
}
// Initialize view mode
document.addEventListener('DOMContentLoaded', function() {
const savedMode = localStorage.getItem(LIBRARY_VIEW_MODE_KEY) || 'card';
setViewMode(savedMode);
document.getElementById('viewModeToggle').addEventListener('click', function() {
const currentMode = localStorage.getItem(LIBRARY_VIEW_MODE_KEY) || 'card';
const newMode = currentMode === 'card' ? 'table' : 'card';
setViewMode(newMode);
});
// Details button handlers
document.querySelectorAll('.details-btn').forEach(btn => {
btn.addEventListener('click', function(e) {
e.preventDefault();
const itemId = this.dataset.itemId;
fetch(`/get_item_details/${itemId}`)
.then(r => r.json())
.then(data => {
if (data.success) {
displayLibraryItemDetail(data.item);
document.getElementById('detailModal').style.display = 'flex';
}
});
});
});
// Borrow button handlers
document.querySelectorAll('.borrow-btn').forEach(btn => {
btn.addEventListener('click', function() {
document.getElementById('borrowItemId').value = this.dataset.itemId;
document.getElementById('borrowModal').style.display = 'flex';
});
});
// Borrow form submit
document.getElementById('borrowForm').addEventListener('submit', function(e) {
e.preventDefault();
const itemId = document.getElementById('borrowItemId').value;
const studentId = document.getElementById('studentIdInput').value || null;
const borrowDays = document.getElementById('borrowDaysInput').value || 14;
fetch('/borrow_item', {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
item_id: itemId,
student_id: studentId,
borrow_days: borrowDays
})
})
.then(r => r.json())
.then(data => {
if (data.success) {
alert('Erfolgreich ausgeliehen!');
location.reload();
} else {
alert('Fehler: ' + data.message);
}
});
});
// Modal close handlers
document.querySelectorAll('.modal-close').forEach(btn => {
btn.addEventListener('click', function() {
this.closest('.modal').style.display = 'none';
});
});
// Close modals on outside click
document.querySelectorAll('.modal').forEach(modal => {
modal.addEventListener('click', function(e) {
if (e.target === this) this.style.display = 'none';
});
});
initMobileWindowedLibraryLoading();
});
function displayLibraryItemDetail(item) {
const modalBody = document.getElementById('modalBody');
const returnBtn = item.Verfuegbar === false ? `<button class="action-button return-btn" onclick="returnItem('${item._id}')">Zurückgeben</button>` : '';
const borrowBtn = item.Verfuegbar === true ? `<button class="action-button borrow-btn" onclick="openBorrowModal('${item._id}')">Ausleihen</button>` : '';
modalBody.innerHTML = `
<h2>${item.Name}</h2>
<div class="detail-content">
${item.Image ? `<img src="/uploads/${item.Image}" alt="${item.Name}" style="max-width: 200px; margin-bottom: 20px;">` : ''}
<p><strong>Autor:</strong> ${item.Author || '—'}</p>
<p><strong>ISBN:</strong> ${item.ISBN || '—'}</p>
<p><strong>Typ:</strong> ${item.ItemType || 'Medium'}</p>
<p><strong>Status:</strong> ${item.Verfuegbar === false ? 'Ausgeliehen' : 'Verfügbar'}</p>
${item.User ? `<p><strong>Ausgeliehen von:</strong> ${item.User}</p>` : ''}
${item.Beschreibung ? `<p><strong>Beschreibung:</strong> ${item.Beschreibung}</p>` : ''}
<div class="modal-actions">
${borrowBtn}
${returnBtn}
</div>
</div>
`;
}
function openBorrowModal(itemId) {
document.getElementById('borrowItemId').value = itemId;
document.getElementById('borrowModal').style.display = 'flex';
document.getElementById('detailModal').style.display = 'none';
}
function returnItem(itemId) {
if (confirm('Wirklich zurückgeben?')) {
fetch('/return_item', {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({item_id: itemId})
})
.then(r => r.json())
.then(data => {
if (data.success) {
alert('Erfolgreich zurückgegeben!');
location.reload();
}
});
}
}
// Filter dropdown toggle with auto-close
function closeAllFilters() {
document.querySelectorAll('.filter-dropdown').forEach(d => d.style.display = 'none');
document.getElementById('filterBtn').setAttribute('aria-expanded', 'false');
document.getElementById('filterBtn').classList.remove('open');
}
document.getElementById('filterBtn').addEventListener('click', function(e) {
e.stopPropagation();
const dropdown = document.getElementById('filterDropdown');
const isOpen = dropdown.style.display !== 'none';
closeAllFilters();
if (!isOpen) {
dropdown.style.display = 'block';
this.setAttribute('aria-expanded', 'true');
this.classList.add('open');
}
});
document.addEventListener('click', closeAllFilters);
document.getElementById('filterDropdown').addEventListener('click', e => e.stopPropagation());
// Clear filters
document.getElementById('clearFiltersBtn').addEventListener('click', function() {
document.querySelectorAll('.filter-checkbox').forEach(c => c.checked = false);
closeAllFilters();
});
// Scanner toggle
// Scanner state tracking
let isScanning = false;
document.getElementById('scannerBtn').addEventListener('click', function(e) {
e.stopPropagation();
const container = document.getElementById('qrContainer');
const isOpen = container.style.display !== 'none';
const btn = this;
if (isOpen) {
// Close the scanner
container.style.display = 'none';
Quagga.stop();
isScanning = false;
btn.classList.remove('open');
btn.setAttribute('aria-expanded', 'false');
} else {
// Open the scanner
container.style.display = 'block';
btn.classList.add('open');
btn.setAttribute('aria-expanded', 'true');
Quagga.init({
inputStream: {
name: "Live",
type: "LiveStream",
// Targets the element where the video stream will inject
target: document.querySelector('#qr-reader'),
constraints: {
width: 640,
height: 480,
facingMode: "environment" // Forces back camera
},
},
decoder: {
// Optimized for 1D barcodes (e.g., student IDs, member cards)
readers: ["code_128_reader", "ean_reader", "code_39_reader", "upc_reader"]
}
}, function(err) {
if (err) {
console.error("Initialization error:", err);
alert("Kamera konnte nicht gestartet werden.");
return;
}
Quagga.start();
isScanning = true;
});
}
});
// Single Quagga event listener for successful scans
Quagga.onDetected(function(data) {
const decodedText = data.codeResult.code;
const studentId = String(decodedText || '').trim();
// Stop scanning immediately to prevent multiple triggers
Quagga.stop();
isScanning = false;
// Reset UI states to closed
const container = document.getElementById('qrContainer');
const btn = document.getElementById('scannerBtn');
if (container) container.style.display = 'none';
if (btn) {
btn.classList.remove('open');
btn.setAttribute('aria-expanded', 'false');
}
// Route the scanned data to your input
document.getElementById('studentIdInput').value = studentId;
alert('Ausweis gescannt: ' + studentId);
});
</script>
<style>
.library-item .item-image-wrapper {
width: 120px;
height: 160px;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
border-radius: 8px;
overflow: hidden;
flex-shrink: 0;
}
.library-item .placeholder-image {
width: 100%;
height: 100%;
display: flex;
align-items: center;
justify-content: center;
font-size: 48px;
color: white;
}
.library-item .item-author {
font-size: 0.9rem;
color: #666;
margin: 4px 0;
}
.library-item .item-isbn {
font-size: 0.85rem;
color: #999;
font-family: monospace;
margin: 4px 0;
}
.library-item .item-type {
display: inline-block;
background: #e8f0fe;
color: #1967d2;
padding: 2px 8px;
border-radius: 4px;
font-size: 0.8rem;
}
.library-item .item-status.available {
background: #e6f4ea;
color: #137333;
}
.library-item .item-status.borrowed {
background: #fce8e6;
color: #b3261e;
}
/* Mobile: allow horizontal scrolling for table-mode views */
@media (max-width: 900px) {
.library-table-wrapper {
overflow-x: auto;
-webkit-overflow-scrolling: touch;
width: 100%;
}
.library-table-wrapper .table-row {
min-width: 720px; /* allow table to have intrinsic width and be scrolled */
}
.table-header, .item-content.table-mode {
display: block; /* keep rows stacked but allow horizontal scroll */
}
}
</style>
{% endblock %}