changes to the info importing for the library item

Web/templates/library_borrowings_admin.html

@@ -299,7 +299,7 @@
             <div class="muted">{{ e.item_author or '—' }}</div>
             <div class="mono">{{ e.item_code or '—' }}</div>
             <div style="margin-top:6px;">
-              <a class="btn btn-outline-secondary btn-sm" href="{{ url_for('library_item_invoices', item_id=e.item_id) }}">Rechnungen</a>
+              <a class="btn btn-outline-secondary btn-sm" href="{{ url_for('library_item_invoices', item_id=e.item_id) }}">Rechnungen / Historie</a>
             </div>
           </td>
           <td>
@@ -322,9 +322,9 @@
             {% if e.invoice_number %}
               <div class="mono">{{ e.invoice_number }}</div>
               <div class="muted">{{ e.invoice_amount }}</div>
-              {% if e.invoice_corrections_count %}
+              <!--{% if e.invoice_corrections_count %}
                 <div class="muted" style="color:#7c2d12;">{{ e.invoice_corrections_count }} Korrektur(en)</div>
-              {% endif %}
+              {% endif %} -->
               <div style="margin-top:6px;">
                 <a class="btn btn-outline-primary btn-sm" href="{{ url_for('admin_view_invoice_pdf', borrow_id=e.id) }}" target="_blank" rel="noopener">PDF öffnen</a>
               </div>
@@ -363,13 +363,13 @@
               <button type="button" class="btn btn-warning btn-sm" onclick="openRepairModal('{{ e.item_id }}', '{{ e.item_code }}')">Reparieren / Ersetzen</button>
               {% endif %}
 
-              {% if e.invoice_number %}
+              <!--{% if e.invoice_number %}
               <form method="post" action="{{ url_for('admin_add_invoice_correction', borrow_id=e.id) }}" onsubmit="return confirm('Korrekturbuchung hinzufügen?');" style="display: flex; gap: 6px; align-items: center; flex-wrap: wrap;">
                 <input type="text" name="correction_reason" value="Korrektur zu {{ e.invoice_number }}" placeholder="Korrekturgrund" required style="padding:6px; border:1px solid #ddd; border-radius:6px; min-width:160px; max-width:180px;">
                 <input type="text" name="amount_delta" placeholder="z.B. -{{ e.invoice_amount }}" style="padding:6px; border:1px solid #ddd; border-radius:6px; width:120px;">
                 <button type="submit" class="btn btn-outline-danger btn-sm">Korrektur</button>
               </form>
-              {% endif %}
+              {% endif %}-->
 
               {% if e.status in ['active', 'planned'] %}
               <form method="post" action="{{ url_for('admin_reset_borrowing', borrow_id=e.id) }}" onsubmit="return confirm('Ausleihe zurücksetzen?');">

Web/templates/library_item_invoices.html

@@ -132,7 +132,7 @@
     </div>
     <div class="head-actions">
       <a class="btn btn-outline-secondary" href="{{ url_for('library_loans_admin') }}">Zur Bibliotheks-Ausleihenverwaltung</a>
-      <a class="btn btn-secondary" href="{{ url_for('library_admin') }}">Bibliothek öffnen</a>
+      <a class="btn btn-secondary" href="{{ url_for('library_view') }}">Bibliothek öffnen</a>
     </div>
   </div>
 

Web/templates/upload_admin.html

@@ -1523,78 +1523,8 @@
         document.getElementById('new-location-input').value = '';
     }
 
-    // Function to fetch book information from ISBN
-    function fetchBookInfo(formType) {
-        if (!libraryModuleEnabled) {
-            alert('Bibliotheks-Modul ist deaktiviert.');
-            return;
-        }
-        const isbnField = document.getElementById('isbn');
-        const infoContainer = document.getElementById('book-info-container');
-        
-        if (!isbnField || !infoContainer) {
-            alert('Fehler: Erforderliche Formularelemente nicht gefunden.');
-            return;
-        }
-        
-        const isbn = normalizeIsbnClient(isbnField.value);
-        
-        if (!isbn) {
-            infoContainer.innerHTML = '<div class="error-message">Bitte geben Sie eine ISBN oder einen Barcode ein.</div>';
-            return;
-        }
-        
-        // Show loading indicator
-        infoContainer.innerHTML = '<div class="loading-spinner">Informationen werden abgerufen...</div>';
-        
-        // Make API request to fetch book data
-        fetch(`/fetch_book_info/${isbn}`)
-            .then(response => {
-                if (!response.ok) {
-                    if (response.status === 404) {
-                        throw new Error('Buch nicht gefunden. Überprüfen Sie die ISBN.');
-                    } else {
-                        throw new Error('Fehler beim Abrufen der Buchinformationen');
-                    }
-                }
-                return response.json();
-            })
-            .then(data => {
-                if (data.error) {
-                    infoContainer.innerHTML = `<div class="error-message">${data.error}</div>`;
-                    return;
-                }
-                
-                // Store book data globally for import functionality
-                currentBookData = data;
-                
-                // Display book information with import button
-                infoContainer.innerHTML = `
-                    <div class="book-info">
-                        <h4>${data.title}</h4>
-                        ${data.authors ? `<p><strong>Autor(en):</strong> ${data.authors}</p>` : ''}
-                        ${data.publisher ? `<p><strong>Verlag:</strong> ${data.publisher}</p>` : ''}
-                        ${data.publishedDate ? `<p><strong>Erscheinungsdatum:</strong> ${data.publishedDate}</p>` : ''}
-                        ${data.pageCount ? `<p><strong>Seitenanzahl:</strong> ${data.pageCount}</p>` : ''}
-                        ${data.price ? `<p><strong>Preis:</strong> ${data.price}</p>` : ''}
-                        ${data.thumbnail ? `<img src="${data.thumbnail}" alt="Buchcover" class="book-thumbnail">` : ''}
-                        ${data.description ? `
-                            <div class="book-description">
-                                <h5>Beschreibung:</h5>
-                                <p>${data.description}</p>
-                            </div>
-                        ` : ''}
-                        <button type="button" class="import-book-button" onclick="importBookInfo('${formType}')">
-                            Buchdaten in Formular übernehmen
-                        </button>
-                    </div>
-                `;
-            })
-            .catch(error => {
-                infoContainer.innerHTML = `<div class="error-message">${error.message}</div>`;
-                currentBookData = null;
-            });
-    }
+    let currentFetchedIsbn = null;
+    let currentBookData = null;
 
     // Function to import book information into form
     function importBookInfo(formType) {
@@ -1602,23 +1532,23 @@
             alert('Keine Buchdaten verfügbar zum Import.');
             return;
         }
-        
+
         // Get form fields
         const nameField = document.getElementById('name');
         const descriptionField = document.getElementById('beschreibung');
-        const priceField = document.getElementById('anschaffungskosten'); // <-- NEU
-        
+        const priceField = document.getElementById('anschaffungskosten');
+
         if (!nameField || !descriptionField) {
             alert('Fehler: Formularfelder nicht gefunden.');
             return;
         }
-        
+
         // Generate book title
         let bookTitle = currentBookData.title || '';
         if (currentBookData.authors && currentBookData.authors !== 'Unknown Author') {
             bookTitle += ` - ${currentBookData.authors}`;
         }
-        
+
         // Generate description
         let description = '';
         if (currentBookData.description && currentBookData.description !== 'No description available') {
@@ -1639,11 +1569,11 @@
                 description += `\nSeiten: ${currentBookData.pageCount}`;
             }
         }
-        
+
         // Import the data into form fields
         nameField.value = bookTitle;
         descriptionField.value = description;
-        
+
         // Preis in das Formularfeld eintragen
         if (priceField && currentBookData.price !== null && currentBookData.price !== undefined) {
             // Wandelt den Float (z.B. 12.25) in einen String mit Komma (12,25) um
@@ -1651,18 +1581,31 @@
             priceField.value = formattedPrice;
         }
 
-        // Download and import book cover image if available
+        // Download and import book cover image if available (mit Sicherheits-Check)
         if (currentBookData.thumbnail) {
-            downloadBookCover(currentBookData.thumbnail);
+            if (typeof downloadBookCover === 'function') {
+                try {
+                    downloadBookCover(currentBookData.thumbnail);
+                } catch (e) {
+                    console.warn("Cover konnte nicht heruntergeladen werden:", e);
+                }
+            }
         }
-        
+
         // Show success message
         const infoContainer = document.getElementById('book-info-container');
+
+        // Alte Erfolgsmeldung entfernen, falls jemand mehrfach klickt
+        const oldMessage = infoContainer.querySelector('.import-success-message');
+        if (oldMessage) {
+            oldMessage.remove();
+        }
+
         const successMessage = document.createElement('div');
         successMessage.className = 'import-success-message';
         successMessage.textContent = 'Buchdaten erfolgreich in das Formular übernommen!';
         infoContainer.appendChild(successMessage);
-        
+
         // Remove success message after 3 seconds
         setTimeout(() => {
             if (successMessage.parentNode) {
@@ -1671,6 +1614,95 @@
         }, 3000);
     }
 
+    // Function to fetch book information from ISBN
+    function fetchBookInfo(formType) {
+        if (typeof libraryModuleEnabled !== 'undefined' && !libraryModuleEnabled) {
+            alert('Bibliotheks-Modul ist deaktiviert.');
+            return;
+        }
+        const isbnField = document.getElementById('isbn');
+        const infoContainer = document.getElementById('book-info-container');
+
+        if (!isbnField || !infoContainer) {
+            alert('Fehler: Erforderliche Formularelemente nicht gefunden.');
+            return;
+        }
+
+        const isbn = typeof normalizeIsbnClient === 'function'
+            ? normalizeIsbnClient(isbnField.value)
+            : isbnField.value.trim();
+
+        if (!isbn) {
+            infoContainer.innerHTML = '<div class="error-message">Bitte geben Sie eine ISBN oder einen Barcode ein.</div>';
+            currentFetchedIsbn = null;
+            return;
+        }
+
+        // --- DER FIX FÜR DAS DOPPELKLICK-PROBLEM ---
+        // Wenn das Buch bereits erfolgreich geladen wurde und auf dem Bildschirm steht,
+        // unterbrechen wir hier. Das schützt den Button vor dem Überschreiben.
+        if (currentFetchedIsbn === isbn && currentBookData !== null) {
+            return;
+        }
+        // -------------------------------------------
+
+        // Sperre für den aktuellen Suchbegriff setzen
+        currentFetchedIsbn = isbn;
+
+        // Show loading indicator
+        infoContainer.innerHTML = '<div class="loading-spinner">Informationen werden abgerufen...</div>';
+
+        // Make API request to fetch book data
+        fetch(`/fetch_book_info/${isbn}`)
+            .then(response => {
+                if (!response.ok) {
+                    if (response.status === 404) {
+                        throw new Error('Buch nicht gefunden. Überprüfen Sie die ISBN.');
+                    } else {
+                        throw new Error('Fehler beim Abrufen der Buchinformationen');
+                    }
+                }
+                return response.json();
+            })
+            .then(data => {
+                if (data.error) {
+                    infoContainer.innerHTML = `<div class="error-message">${data.error}</div>`;
+                    currentFetchedIsbn = null; // Freigabe bei Fehler
+                    return;
+                }
+
+                // Store book data globally for import functionality
+                currentBookData = data;
+
+                // Display book information with import button
+                infoContainer.innerHTML = `
+                <div class="book-info">
+                    <h4>${data.title}</h4>
+                    ${data.authors ? `<p><strong>Autor(en):</strong> ${data.authors}</p>` : ''}
+                    ${data.publisher ? `<p><strong>Verlag:</strong> ${data.publisher}</p>` : ''}
+                    ${data.publishedDate ? `<p><strong>Erscheinungsdatum:</strong> ${data.publishedDate}</p>` : ''}
+                    ${data.pageCount ? `<p><strong>Seitenanzahl:</strong> ${data.pageCount}</p>` : ''}
+                    ${data.price ? `<p><strong>Preis:</strong> ${data.price}</p>` : ''}
+                    ${data.thumbnail ? `<img src="${data.thumbnail}" alt="Buchcover" class="book-thumbnail">` : ''}
+                    ${data.description ? `
+                        <div class="book-description">
+                            <h5>Beschreibung:</h5>
+                            <p>${data.description}</p>
+                        </div>
+                    ` : ''}
+                    <button type="button" class="import-book-button" onclick="importBookInfo('${formType}')">
+                        Buchdaten in Formular übernehmen
+                    </button>
+                </div>
+            `;
+            })
+            .catch(error => {
+                infoContainer.innerHTML = `<div class="error-message">${error.message}</div>`;
+                currentBookData = null;
+                currentFetchedIsbn = null;
+            });
+    }
+
     function downloadBookCover(imageUrl) {
         if (!imageUrl) {
             console.log('No image URL provided');