refactor: properly migrate thread ids

Commit fc65190ef7 introduced thread ids but
did not add the thread id to previous notes. This is fixed by this commit.

The original notes in each thread should also have a thread id set which will
be the same as their ID.

These two migrations allow the threadId column be a NOT NULL column.

packages/backend/migration/1659446758000-fix-thread-id.js

@@ -0,0 +1,30 @@
+export class fixThreadId1659446758000 {
+	name = 'fixThreadId1659446758000'
+
+	async up(queryRunner) {
+		await Promise.all([
+			queryRunner.query(`UPDATE "note" SET "threadId" = "id" WHERE "replyId" IS NULL`),
+			queryRunner.query(`WITH "threads" ("noteId", "thread") AS (
+			    SELECT "id" as "noteId", "parent" as "thread" FROM (
+			        WITH RECURSIVE "parents" ("id", "parent", "height") AS (
+			                SELECT "id", "replyId", 0 FROM "note" WHERE "replyId" IS NOT NULL AND "threadId" IS NULL
+			            UNION ALL
+			                SELECT "parents"."id", "note"."replyId", "parents"."height" + 1
+			                FROM "parents"
+			                JOIN "note" ON "parents"."parent" = "note"."id"
+			                WHERE "note"."replyId" IS NOT NULL
+			        ) SELECT *, MAX("height") OVER (PARTITION BY "id") AS "maxheight" FROM "parents"
+			    ) AS "x"
+			    WHERE "height" = "maxheight"
+			) UPDATE "note" SET "threadId" = "threads"."thread" FROM "threads" WHERE "id" = "threads"."noteId"`),
+		]);
+		await queryRunner.query(`ALTER TABLE "note" ALTER COLUMN "threadId" SET NOT NULL`);
+	}
+
+	async down(queryRunner) {
+		await queryRunner.query(`ALTER TABLE "note" ALTER COLUMN "threaadId" DROP NOT NULL`);
+		// Cannot un-fix thread id's for ones that just were not migrated (2nd query above)
+		// but can remove the thread ids for the root notes of each thread.
+		await queryRunner.query(`UPDATE "note" SET "threadId" = NULL WHERE "replyId" IS NULL`);
+	}
+}

packages/backend/src/models/entities/note.ts

@@ -51,7 +51,7 @@ export class Note {
 	@Column('varchar', {
 		length: 256, nullable: true,
 	})
-	public threadId: string | null;
+	public threadId: string;
 
 	@Column('text', {
 		nullable: true,

packages/backend/src/server/api/common/generate-muted-note-thread-query.ts

@@ -8,10 +8,7 @@ export function generateMutedNoteThreadQuery(q: SelectQueryBuilder<any>, me: { i
 		.where('threadMuted.userId = :userId', { userId: me.id });
 
 	q.andWhere(`note.id NOT IN (${ mutedQuery.getQuery() })`);
-	q.andWhere(new Brackets(qb => { qb
-		.where(`note.threadId IS NULL`)
-		.orWhere(`note.threadId NOT IN (${ mutedQuery.getQuery() })`);
-	}));
+	q.andWhere(`note.threadId NOT IN (${ mutedQuery.getQuery() })`);
 
 	q.setParameters(mutedQuery.getParameters());
 }

packages/backend/src/server/api/endpoints/notes/state.ts

@@ -57,7 +57,7 @@ export default define(meta, paramDef, async (ps, user) => {
 		NoteThreadMutings.count({
 			where: {
 				userId: user.id,
-				threadId: note.threadId || note.id,
+				threadId: note.threadId,
 			},
 			take: 1,
 		}),

packages/backend/src/server/api/endpoints/notes/thread-muting/create.ts

@@ -38,9 +38,7 @@ export default define(meta, paramDef, async (ps, user) => {
 
 	const mutedNotes = await Notes.find({
 		where: [{
-			id: note.threadId || note.id,
-		}, {
-			threadId: note.threadId || note.id,
+			threadId: note.threadId,
 		}],
 	});
 
@@ -49,7 +47,7 @@ export default define(meta, paramDef, async (ps, user) => {
 	await NoteThreadMutings.insert({
 		id: genId(),
 		createdAt: new Date(),
-		threadId: note.threadId || note.id,
+		threadId: note.threadId,
 		userId: user.id,
 	});
 });

packages/backend/src/server/api/endpoints/notes/thread-muting/delete.ts

@@ -35,7 +35,7 @@ export default define(meta, paramDef, async (ps, user) => {
 	});
 
 	await NoteThreadMutings.delete({
-		threadId: note.threadId || note.id,
+		threadId: note.threadId,
 		userId: user.id,
 	});
 });

packages/backend/src/services/note/create.ts

@@ -364,7 +364,7 @@ export default async (user: { id: User['id']; username: User['username']; host:
 			if (data.reply.userHost === null) {
 				const threadMuted = await NoteThreadMutings.findOneBy({
 					userId: data.reply.userId,
-					threadId: data.reply.threadId || data.reply.id,
+					threadId: data.reply.threadId,
 				});
 
 				if (!threadMuted) {
@@ -494,18 +494,16 @@ function incRenoteCount(renote: Note) {
 }
 
 async function insertNote(user: { id: User['id']; host: User['host']; }, data: Option, tags: string[], emojis: string[], mentionedUsers: MinimumUser[]) {
+	const id = genId(data.createdAt!);
+
 	const insert = new Note({
-		id: genId(data.createdAt!),
+		id,
 		createdAt: data.createdAt!,
 		fileIds: data.files ? data.files.map(file => file.id) : [],
 		replyId: data.reply ? data.reply.id : null,
 		renoteId: data.renote ? data.renote.id : null,
 		channelId: data.channel ? data.channel.id : null,
-		threadId: data.reply
-			? data.reply.threadId
-				? data.reply.threadId
-				: data.reply.id
-			: null,
+		threadId: data.reply?.threadId ?? id,
 		name: data.name,
 		text: data.text,
 		hasPoll: data.poll != null,
@@ -628,7 +626,7 @@ async function createMentionedEvents(mentionedUsers: MinimumUser[], note: Note,
 	for (const u of mentionedUsers.filter(u => Users.isLocalUser(u))) {
 		const threadMuted = await NoteThreadMutings.findOneBy({
 			userId: u.id,
-			threadId: note.threadId || note.id,
+			threadId: note.threadId,
 		});
 
 		if (threadMuted) {

packages/backend/src/services/note/unread.ts

@@ -20,7 +20,7 @@ export async function insertNoteUnread(userId: User['id'], note: Note, params: {
 	// スレッドミュート
 	const threadMute = await NoteThreadMutings.findOneBy({
 		userId: userId,
-		threadId: note.threadId || note.id,
+		threadId: note.threadId,
 	});
 	if (threadMute) return;