enforce some types and reminder architecture

src/lib/db/entities.d.ts

@@ -90,14 +90,29 @@ interface EventReminder extends ReminderBase {
 	scheduleTimeAt?: never
 }
 
-interface PeriodicReminder extends ReminderBase {
+interface PeriodicReminderBase extends ReminderBase {
 	type: "periodic",
-	scheduleEveryInterval?: {
+	scheduleTimeInterval?: {
+		hour?: number,
+		minute?: number,
+		second?: number
+	}
+
+	// make it either-or in regards to EventReminder
+	triggeringEvent?: never,
+	delay?: never
+}
+
+interface PeriodicReminderDate extends ReminderBase {
+	scheduleEveryDateInterval?: {
 		year?: number,
 		month?: number,
 		day?: number,
 	},
-	scheduleEveryWeekday?: {
+	scheduleEveryWeekdayInterval?: never
+}
+interface PeriodicReminderWeekday extends ReminderBase {
+	scheduleEveryWeekdayInterval?: {
 		monday?: boolean,
 		tuesday?: boolean,
 		wednesday?: boolean,
@@ -106,17 +121,10 @@ interface PeriodicReminder extends ReminderBase {
 		saturday?: boolean,
 		sunday?: boolean
 	},
-	scheduleTimeAt?: {
-		hour?: number,
-		minute?: number,
-		second?: number
-	}
-
-	// make it either-or in regards to EventReminder
-	triggeringEvent?: never,
-	delay?: never
+	scheduleEveryDateInterval?: never
 }
 
+export type PeriodicReminder = PeriodicReminderDate | PeriodicReminderWeekday;
 export type Reminder = EventReminder | PeriodicReminder;
 
 export interface System extends UUIDable {