/api/groups and /api/invites refactored, fixed some inserts/updates in which I didn't include the id

src/pages/api/evaluate/interactiveSpeaking.ts

@@ -58,6 +58,7 @@ async function handler(req: NextApiRequest, res: NextApiResponse) {
 			{ id: fields.id },
 			{
 			  $set: {
+				id: fields.id,
 				solutions,
 				score: {
 				  correct: speakingReverseMarking[backendRequest.data.overall || 0] || 0,

src/pages/api/evaluate/speaking.ts

@@ -54,6 +54,7 @@ async function handler(req: NextApiRequest, res: NextApiResponse) {
 		await db.collection("stats").updateOne(
 			{ id: fields.id },
 			{
+				id: fields.id,
 				solutions,
 				score: {
 					correct: speakingReverseMarking[backendRequest.data.overall || 0] || 0,

src/pages/api/evaluate/writing.ts

@@ -39,7 +39,8 @@ async function handler(req: NextApiRequest, res: NextApiResponse) {
 	const solutions = correspondingStat.solutions.map((x) => ({...x, evaluation: backendRequest.data}));
 	await db.collection("stats").updateOne(
 		{ id: (req.body as Body).id},
-		{
+		{	
+			id: (req.body as Body).id,
 			solutions,
 			score: {
 				correct: writingReverseMarking[backendRequest.data.overall],
@@ -58,7 +59,7 @@ async function getCorrespondingStat(id: string, index: number): Promise<Stat> {
 	const correspondingStat = await db.collection("stats").findOne<Stat>({ id: id});
 
 	if (correspondingStat) return correspondingStat;
-	
+
 	await delay(3 * 10000);
 	return getCorrespondingStat(id, index + 1);
 }