Save calendar view (month vs week) in url param

frontend/src/app/features/calendar/calendar.routes.ts

@@ -37,13 +37,15 @@ export const CALENDAR_ROUTES:Ng2StateDeclaration[] = [
   {
     name: 'calendar',
     parent: 'optional_project',
-    url: '/calendar?query_id&query_props',
+    url: '/calendar?query_id&query_props&cdate&cview',
     redirectTo: 'calendar.page',
     views: {
       '!$default': { component: WorkPackagesBaseComponent },
     },
     params: {
       query_id: { type: 'query', dynamic: true },
+      cdate: { type: 'string', dynamic: true },
+      cview: { type: 'string', dynamic: true },
       // Use custom encoder/decoder that ensures validity of URL string
       query_props: { type: 'opQueryString' },
     },

frontend/src/app/features/calendar/op-calendar.service.ts

@@ -243,6 +243,7 @@ export class OpCalendarService extends UntilDestroyedMixin {
         right: '',
       },
       initialDate: this.initialDate,
+      initialView: this.initialView,
       datesSet: (dates) => this.updateDateParam(dates),
       // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
       eventClick: this.openSplitView.bind(this),
@@ -352,10 +353,17 @@ export class OpCalendarService extends UntilDestroyedMixin {
     return undefined;
   }
 
+  private get initialView():string|undefined {
+    return this.urlParams.cview as string|undefined;
+  }
+
   private updateDateParam(dates:DatesSetArg) {
     void this.$state.go(
       '.',
-      { cdate: this.timezoneService.formattedISODate(dates.start) },
+      {
+        cdate: this.timezoneService.formattedISODate(dates.view.currentStart),
+        cview: dates.view.type,
+      },
     );
   }
 }

frontend/src/app/features/calendar/wp-calendar/wp-calendar.component.ts

@@ -127,12 +127,6 @@ export class WorkPackagesCalendarComponent extends UntilDestroyedMixin implement
             // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
             events: this.calendarEventsFunction.bind(this),
             plugins: [dayGridPlugin],
-            initialView: (() => {
-              if (this.static) {
-                return 'dayGridWeek';
-              }
-              return undefined;
-            })(),
           }),
         );
       });