Create goal-core and add new util to session-core

server/src/core/session-core.ts

@@ -1,8 +1,24 @@
-import { SessionDocument } from "kamaitachi-common";
+import { SessionDocument, ScoreDocument, SessionScoreInfo } from "kamaitachi-common";
+import { Condition } from "mongodb";
 import db from "../db/db";
 
+/**
+ * Returns all the score documents inside a session.
+ * @param session The session to retrieve the score documents of.
+ */
 export function GetScoresFromSession(session: SessionDocument) {
     return db.scores.find({
         scoreID: { $in: session.scoreInfo.map((e) => e.scoreID) },
     });
 }
+
+/**
+ * Returns the session a score belongs to, if there is one. A score can only be part of one session implicitly.
+ * @param score The score to return the associated session of.
+ */
+export function GetSessionFromScore(score: ScoreDocument) {
+    return db.sessions.findOne({
+        // ??? another bug in monks types i think
+        scoreInfo: { scoreID: score.scoreID } as Condition<SessionScoreInfo>,
+    });
+}