update

backend/src/services/booking.service.ts

@@ -314,17 +314,19 @@ class BookingService {
 
   /** Soft-cancels a booking by setting abgesagt=TRUE and recording the reason. */
   async cancel(id: string, abgesagt_grund: string): Promise<void> {
-    await pool.query(
+    const result = await pool.query(
       `UPDATE fahrzeug_buchungen
        SET abgesagt = TRUE, abgesagt_grund = $2, aktualisiert_am = NOW()
        WHERE id = $1`,
       [id, abgesagt_grund]
     );
+    if (result.rowCount === 0) throw new Error('Buchung nicht gefunden');
   }
 
   /** Permanently deletes a booking record. */
   async delete(id: string): Promise<void> {
-    await pool.query('DELETE FROM fahrzeug_buchungen WHERE id = $1', [id]);
+    const result = await pool.query('DELETE FROM fahrzeug_buchungen WHERE id = $1', [id]);
+    if (result.rowCount === 0) throw new Error('Buchung nicht gefunden');
   }
 
   /**
@@ -399,6 +401,22 @@ class BookingService {
     const { rows } = await pool.query(query, params);
     const now = toIcalDate(new Date());
 
+    // iCal escaping and folding helpers
+    const icalEscape = (val: string): string =>
+      val.replace(/\\/g, '\\\\').replace(/;/g, '\\;').replace(/,/g, '\\,').replace(/\n/g, '\\n');
+    const icalFold = (line: string): string => {
+      if (Buffer.byteLength(line, 'utf-8') <= 75) return line;
+      let folded = '';
+      let cur = '';
+      let bytes = 0;
+      for (const ch of line) {
+        const cb = Buffer.byteLength(ch, 'utf-8');
+        if (bytes + cb > 75) { folded += cur + '\r\n '; cur = ch; bytes = 1 + cb; }
+        else { cur += ch; bytes += cb; }
+      }
+      return folded + cur;
+    };
+
     const events = rows
       .map((row: any) => {
         const beschreibung = [row.buchungs_art, row.beschreibung]
@@ -410,8 +428,8 @@ class BookingService {
           `DTSTAMP:${now}\r\n` +
           `DTSTART:${toIcalDate(new Date(row.beginn))}\r\n` +
           `DTEND:${toIcalDate(new Date(row.ende))}\r\n` +
-          `SUMMARY:${row.titel} - ${row.fahrzeug_name}\r\n` +
-          `DESCRIPTION:${beschreibung}\r\n` +
+          icalFold(`SUMMARY:${icalEscape(row.titel)} - ${icalEscape(row.fahrzeug_name)}`) + '\r\n' +
+          icalFold(`DESCRIPTION:${icalEscape(beschreibung)}`) + '\r\n' +
           'END:VEVENT\r\n'
         );
       })