Shitty gadgets removed. Some useful gadgets added.

frontend/src/components/shared/treatmentSelection.ts

@@ -2,8 +2,9 @@ import { isSameLocalCalendarDay } from '@/components/appointments/appointmentTim
 import type { TreatmentAppointment } from '@/types/treatment';
 
 /**
- * For the selected calendar day: if it is today, pick the appointment whose time range contains now;
- * otherwise pick the first appointment of that day. Returns null when there are no appointments.
+ * For the selected calendar day: if it is today, pick the in-progress appointment,
+ * otherwise the appointment whose start time is nearest to now; on other days pick
+ * the first appointment of that day. Returns null when there are no appointments.
  */
 export function pickAutoAppointment(
   appointments: TreatmentAppointment[],
@@ -19,7 +20,23 @@ export function pickAutoAppointment(
       const e = new Date(a.endAt).getTime();
       if (t >= s && t <= e) return a.id;
     }
+
+    let nearest = appointments[0];
+    let nearestDistance = Math.abs(new Date(nearest.startAt).getTime() - t);
+    for (const appointment of appointments.slice(1)) {
+      const distance = Math.abs(new Date(appointment.startAt).getTime() - t);
+      if (distance < nearestDistance) {
+        nearest = appointment;
+        nearestDistance = distance;
+      }
+    }
+    return nearest.id;
   }
 
   return appointments[0].id;
 }
+
+export function treatmentAppointmentHref(appointmentId?: string): string {
+  if (!appointmentId) return '/treatment';
+  return `/treatment?appointmentId=${encodeURIComponent(appointmentId)}`;
+}