feat: add business hours to SiteSettings for WhatsApp Bot auto-away

Adds businessHours group with timezone, weekly schedule array, and
localized autoAwayMessage field. Migration creates schedule array
table and adds columns to site_settings + site_settings_locales.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/collections/SiteSettings.ts

@@ -187,6 +187,93 @@ export const SiteSettings: CollectionConfig = {
         },
       ],
     },
+    // Business Hours (für WhatsApp Bot Auto-Away)
+    {
+      name: 'businessHours',
+      type: 'group',
+      label: 'Geschäftszeiten',
+      admin: {
+        description: 'Öffnungszeiten für automatische Antworten (z.B. WhatsApp Bot)',
+      },
+      fields: [
+        {
+          name: 'timezone',
+          type: 'text',
+          label: 'Zeitzone',
+          defaultValue: 'Europe/Berlin',
+          admin: {
+            description: 'IANA Zeitzone, z.B. Europe/Berlin, Europe/Vienna',
+          },
+        },
+        {
+          name: 'schedule',
+          type: 'array',
+          label: 'Wochenplan',
+          maxRows: 7,
+          admin: {
+            description: 'Öffnungszeiten pro Wochentag',
+          },
+          fields: [
+            {
+              name: 'day',
+              type: 'select',
+              label: 'Tag',
+              required: true,
+              options: [
+                { label: 'Montag', value: 'monday' },
+                { label: 'Dienstag', value: 'tuesday' },
+                { label: 'Mittwoch', value: 'wednesday' },
+                { label: 'Donnerstag', value: 'thursday' },
+                { label: 'Freitag', value: 'friday' },
+                { label: 'Samstag', value: 'saturday' },
+                { label: 'Sonntag', value: 'sunday' },
+              ],
+            },
+            {
+              name: 'closed',
+              type: 'checkbox',
+              label: 'Geschlossen',
+              defaultValue: false,
+            },
+            {
+              type: 'row',
+              fields: [
+                {
+                  name: 'open',
+                  type: 'text',
+                  label: 'Öffnet',
+                  admin: {
+                    description: 'z.B. 09:00',
+                    width: '50%',
+                    condition: (_data, siblingData) => !siblingData?.closed,
+                  },
+                },
+                {
+                  name: 'close',
+                  type: 'text',
+                  label: 'Schließt',
+                  admin: {
+                    description: 'z.B. 17:00',
+                    width: '50%',
+                    condition: (_data, siblingData) => !siblingData?.closed,
+                  },
+                },
+              ],
+            },
+          ],
+        },
+        {
+          name: 'autoAwayMessage',
+          type: 'textarea',
+          label: 'Auto-Away Nachricht',
+          localized: true,
+          admin: {
+            description:
+              'Wird außerhalb der Geschäftszeiten gesendet. Platzhalter: {{nextOpen}} (nächste Öffnungszeit)',
+          },
+        },
+      ],
+    },
     {
       name: 'seo',
       type: 'group',

src/migrations/20260303_120000_add_site_settings_business_hours.ts

@@ -0,0 +1,49 @@
+import { MigrateUpArgs, MigrateDownArgs, sql } from '@payloadcms/db-postgres'
+
+/**
+ * Migration: Add business hours fields to site_settings
+ *
+ * Adds:
+ * - business_hours_timezone (varchar) on site_settings
+ * - business_hours_auto_away_message (varchar) on site_settings_locales (localized)
+ * - site_settings_business_hours_schedule table (array field)
+ */
+export async function up({ db }: MigrateUpArgs): Promise<void> {
+  // Add timezone column to main table
+  await db.execute(sql`
+    ALTER TABLE "site_settings"
+      ADD COLUMN IF NOT EXISTS "business_hours_timezone" varchar DEFAULT 'Europe/Berlin';
+  `)
+
+  // Add localized auto-away message to locales table
+  await db.execute(sql`
+    ALTER TABLE "site_settings_locales"
+      ADD COLUMN IF NOT EXISTS "business_hours_auto_away_message" varchar;
+  `)
+
+  // Create schedule array table
+  await db.execute(sql`
+    CREATE TABLE IF NOT EXISTS "site_settings_business_hours_schedule" (
+      "id" serial PRIMARY KEY NOT NULL,
+      "_order" integer NOT NULL,
+      "_parent_id" integer NOT NULL REFERENCES site_settings(id) ON DELETE CASCADE,
+      "day" varchar,
+      "closed" boolean DEFAULT false,
+      "open" varchar,
+      "close" varchar
+    );
+
+    CREATE INDEX IF NOT EXISTS "site_settings_bh_schedule_order_idx"
+      ON "site_settings_business_hours_schedule" USING btree ("_order");
+    CREATE INDEX IF NOT EXISTS "site_settings_bh_schedule_parent_idx"
+      ON "site_settings_business_hours_schedule" USING btree ("_parent_id");
+  `)
+}
+
+export async function down({ db }: MigrateDownArgs): Promise<void> {
+  await db.execute(sql`
+    DROP TABLE IF EXISTS "site_settings_business_hours_schedule";
+    ALTER TABLE "site_settings" DROP COLUMN IF EXISTS "business_hours_timezone";
+    ALTER TABLE "site_settings_locales" DROP COLUMN IF EXISTS "business_hours_auto_away_message";
+  `)
+}

src/migrations/index.ts

@@ -40,6 +40,7 @@ import * as migration_20260216_150000_add_card_grid_icon_fields from './20260216
 import * as migration_20260217_120000_add_tenant_to_forms from './20260217_120000_add_tenant_to_forms';
 import * as migration_20260228_150000_add_html_embed_block from './20260228_150000_add_html_embed_block';
 import * as migration_20260302_180000_add_social_platforms_missing_columns from './20260302_180000_add_social_platforms_missing_columns';
+import * as migration_20260303_120000_add_site_settings_business_hours from './20260303_120000_add_site_settings_business_hours';
 
 export const migrations = [
   {
@@ -252,4 +253,9 @@ export const migrations = [
     down: migration_20260302_180000_add_social_platforms_missing_columns.down,
     name: '20260302_180000_add_social_platforms_missing_columns'
   },
+  {
+    up: migration_20260303_120000_add_site_settings_business_hours.up,
+    down: migration_20260303_120000_add_site_settings_business_hours.down,
+    name: '20260303_120000_add_site_settings_business_hours'
+  },
 ];