graduation: support change deletion, coach assignment

Also reset points after a level change.

1 files changed, 11 insertions, 4 deletions

diff --git a/src/graduation-prod.ts b/src/graduation-prod.ts
index 2d4087f..f21aa5d 100644
--- a/src/graduation-prod.ts
+++ b/src/graduation-prod.ts
@@ -3,26 +3,32 @@ import { Graduation, GraduationChange } from "./graduation-common.ts";
 import type { Student } from "./student-common.ts";
 
 const _graduationChangesPromise = (async function () {
+	let universalChanges = new Map();
+	let studentChanges = new Map();
+
 	const db = await getGraduationDb();
-	let changes = new Map();
+
 	let entries = await db.fetchEntries();
 	for (const e of entries) {
 		const gradChange = GraduationChange.fromDBEntry(e);
+		const changes = gradChange.studentId > 0 ? studentChanges : universalChanges;
+
 		if (!changes.has(gradChange.studentId)) {
 			changes.set(gradChange.studentId, [gradChange]);
 		} else {
 			changes.get(gradChange.studentId).push(gradChange);
 		}
 	}
-	return changes;
+	return [studentChanges, universalChanges];
 })();
 
 const graduations: Map<number, Graduation> = new Map();
 
 export async function fetchGraduation(student: Student): Promise<Graduation> {
 	if (!graduations.has(student.id)) {
-		const studentChanges = (await _graduationChangesPromise).get(student.id) ?? [];
-		const graduation = Graduation.from(student, studentChanges);
+		const [studentChanges, universalChanges] = await _graduationChangesPromise;
+		const specificChanges = studentChanges.get(student.id) ?? [];
+		const graduation = Graduation.from(student, specificChanges.concat(universalChanges));
 		graduations.set(student.id, graduation);
 		return graduation;
 	}
@@ -34,4 +40,5 @@ export {
 	GraduationChange,
 	Graduation,
 	submitGraduationChange,
+	deleteGraduationChange,
 } from "./graduation-common.ts";