feat: add shared notification, communication, and export services for bookings, courses, and events; introduce btree_gist extension and new booking atomic function

packages/features/event-management/src/server/services/event-export.service.ts

@@ -0,0 +1,84 @@
+import 'server-only';
+import type { SupabaseClient } from '@supabase/supabase-js';
+
+import type { Database } from '@kit/supabase/database';
+
+export function createEventExportService(client: SupabaseClient<Database>) {
+  return new EventExportService(client);
+}
+
+class EventExportService {
+  constructor(private readonly client: SupabaseClient<Database>) {}
+
+  async exportRegistrationsCsv(eventId: string): Promise<string> {
+    const { data: registrations, error } = await this.client
+      .from('event_registrations')
+      .select('*')
+      .eq('event_id', eventId)
+      .order('last_name');
+
+    if (error) throw error;
+    if (!registrations?.length) return '';
+
+    const headers = [
+      'Vorname',
+      'Nachname',
+      'E-Mail',
+      'Telefon',
+      'Geburtsdatum',
+      'Status',
+      'Anmeldedatum',
+    ];
+
+    const rows = registrations.map((r) =>
+      [
+        r.first_name,
+        r.last_name,
+        r.email ?? '',
+        r.phone ?? '',
+        r.date_of_birth ?? '',
+        r.status,
+        r.created_at ?? '',
+      ]
+        .map((v) => `"${String(v).replace(/"/g, '""')}"`)
+        .join(';'),
+    );
+
+    return [headers.join(';'), ...rows].join('\n');
+  }
+
+  async exportEventsCsv(
+    accountId: string,
+    filters?: { status?: string },
+  ): Promise<string> {
+    let query = this.client
+      .from('events')
+      .select('*')
+      .eq('account_id', accountId)
+      .order('event_date', { ascending: false });
+
+    if (filters?.status) {
+      query = query.eq('status', filters.status as any);
+    }
+
+    const { data: events, error } = await query;
+    if (error) throw error;
+    if (!events?.length) return '';
+
+    const headers = ['Name', 'Status', 'Datum', 'Ort', 'Kapazitat'];
+
+    const rows = events.map((e) =>
+      [
+        e.name,
+        e.status,
+        e.event_date ?? '',
+        e.location ?? '',
+        e.capacity?.toString() ?? '',
+      ]
+        .map((v) => `"${String(v).replace(/"/g, '""')}"`)
+        .join(';'),
+    );
+
+    return [headers.join(';'), ...rows].join('\n');
+  }
+}