Enhance official tournament listing and upload functionality

This commit updates the `listOfficialTournaments` function to ensure it returns an empty array if no tournaments are found, improving data handling. Additionally, the frontend `OfficialTournaments.vue` is enhanced with a file upload feature for PDF documents, along with improved error handling in the tournament list loading process. These changes enhance user experience by providing clearer feedback and functionality for managing official tournaments.

backend/scripts/checkDatabase.js

@@ -0,0 +1,107 @@
+import mysql from 'mysql2/promise';
+import dotenv from 'dotenv';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+import { development } from '../config.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+// Load .env from backend directory
+dotenv.config({ path: join(__dirname, '..', '.env') });
+
+const dbConfig = {
+  host: process.env.DB_HOST || development.host || 'localhost',
+  user: process.env.DB_USER || development.username || 'root',
+  password: process.env.DB_PASSWORD || development.password || '',
+  database: process.env.DB_NAME || development.database || 'trainingdiary',
+};
+
+async function checkDatabase() {
+  let connection;
+  try {
+    console.log('=== Datenbank-Konfiguration ===');
+    console.log('Host:', dbConfig.host);
+    console.log('User:', dbConfig.user);
+    console.log('Database:', dbConfig.database);
+    console.log('Password:', dbConfig.password ? '***' : '(leer)');
+    console.log('');
+    
+    connection = await mysql.createConnection({
+      host: dbConfig.host,
+      user: dbConfig.user,
+      password: dbConfig.password,
+    });
+    
+    // Zeige alle verfügbaren Datenbanken
+    const [databases] = await connection.execute('SHOW DATABASES');
+    console.log('=== Verfügbare Datenbanken ===');
+    databases.forEach(db => {
+      const dbName = db.Database;
+      const isCurrent = dbName === dbConfig.database;
+      console.log(`${isCurrent ? '→' : ' '} ${dbName}${isCurrent ? ' (VERWENDET)' : ''}`);
+    });
+    console.log('');
+    
+    // Verbinde mit der konfigurierten Datenbank
+    await connection.end();
+    connection = await mysql.createConnection(dbConfig);
+    
+    // Prüfe, ob die Tabellen existieren
+    const [tables] = await connection.execute('SHOW TABLES');
+    console.log(`=== Tabellen in "${dbConfig.database}" ===`);
+    console.log(`Anzahl: ${tables.length}`);
+    console.log('');
+    
+    // Prüfe spezifische Tabellen
+    const tableNames = tables.map(t => Object.values(t)[0]);
+    const requiredTables = [
+      'training_group',
+      'member_training_group',
+      'club_disabled_preset_groups',
+      'training_times',
+      'official_tournaments',
+    ];
+    
+    console.log('=== Prüfung wichtiger Tabellen ===');
+    for (const table of requiredTables) {
+      const exists = tableNames.includes(table);
+      console.log(`${exists ? '✓' : '✗'} ${table}`);
+    }
+    console.log('');
+    
+    // Prüfe official_tournaments Daten
+    if (tableNames.includes('official_tournaments')) {
+      const [count] = await connection.execute('SELECT COUNT(*) as count FROM official_tournaments');
+      console.log(`=== official_tournaments Daten ===`);
+      console.log(`Anzahl Einträge: ${count[0].count}`);
+      
+      if (count[0].count > 0) {
+        // Prüfe zuerst die Spaltennamen
+        const [columns] = await connection.execute('SHOW COLUMNS FROM official_tournaments');
+        console.log('Spalten in official_tournaments:');
+        columns.forEach(col => {
+          console.log(`  - ${col.Field} (${col.Type})`);
+        });
+        console.log('');
+        
+        const [rows] = await connection.execute('SELECT * FROM official_tournaments LIMIT 5');
+        console.log('Erste Einträge:');
+        rows.forEach(row => {
+          console.log(`  - ID: ${row.id}, Daten:`, JSON.stringify(row, null, 2));
+        });
+      }
+    }
+    
+  } catch (error) {
+    console.error('Fehler:', error.message);
+    if (error.code) {
+      console.error('Error Code:', error.code);
+    }
+  } finally {
+    if (connection) await connection.end();
+  }
+}
+
+checkDatabase();
+