remove deleted threads/questions

prisma/migrations/20230826014143_add_referential_actions/migration.sql

@@ -0,0 +1,15 @@
+-- RedefineTables
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_Participation" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "questionId" TEXT NOT NULL,
+    "participantId" TEXT NOT NULL,
+    CONSTRAINT "Participation_questionId_fkey" FOREIGN KEY ("questionId") REFERENCES "Question" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "Participation_participantId_fkey" FOREIGN KEY ("participantId") REFERENCES "DiscordUser" ("id") ON DELETE NO ACTION ON UPDATE CASCADE
+);
+INSERT INTO "new_Participation" ("id", "participantId", "questionId") SELECT "id", "participantId", "questionId" FROM "Participation";
+DROP TABLE "Participation";
+ALTER TABLE "new_Participation" RENAME TO "Participation";
+CREATE UNIQUE INDEX "Participation_questionId_participantId_key" ON "Participation"("questionId", "participantId");
+PRAGMA foreign_key_check;
+PRAGMA foreign_keys=ON;

prisma/schema.prisma

@@ -51,9 +51,9 @@ model QuestionTag {
 
 model Participation {
   id               String        @id @default(cuid())
-  question         Question      @relation(fields: [questionId], references: [id])
+  question         Question      @relation(fields: [questionId], references: [id], onDelete: Cascade)
   questionId       String
-  participant      DiscordUser   @relation(fields: [participantId], references: [id])
+  participant      DiscordUser   @relation(fields: [participantId], references: [id], onDelete: NoAction)
   // @TODO - track role at the time of participation, accounts for users that _leave_ "staff"
   participantId    String
   participantRoles DiscordRole[]

src/lib/discord/client.ts

@@ -186,7 +186,6 @@ client.on(Events.MessageCreate, async (message: Message) => {
   // capture thread updates in public "help" channels
   if (
     message.channel.type === ChannelType.PublicThread &&
-    !message.author.bot &&
     isThreadWithinHelpChannel(message.channel)
   ) {
     let record
@@ -432,6 +431,29 @@ client.on(Events.ThreadUpdate, async (oldThread, newThread) => {
   }
 })
 
+client.on(Events.ThreadDelete, async (thread) => {
+  const log = (message: string) =>
+    console.log(`[client:events.ThreadDelete] ${message}`)
+  log('started')
+  const timeMessage = '[client:events:ThreadDelete] finished'
+  console.time(timeMessage)
+  log('deleting question...')
+  try {
+    await prisma.question.delete({
+      where: {
+        threadId: thread.id,
+      },
+      include: {
+        participation: true,
+        answer: true,
+      },
+    })
+  } catch (error) {
+    console.error('Unable to delete question', error)
+  }
+  console.timeEnd(timeMessage)
+})
+
 export function createBot(token = process.env.DISCORD_BOT_TOKEN) {
   return client.login(token)
 }