Initial Commit

server/api/comments/[id]/reactions.post.ts

@@ -0,0 +1,69 @@
+import { and, eq, sql } from 'drizzle-orm'
+import { z } from 'zod'
+import { commentReactions, comments } from '../../../db/schema'
+
+const bodySchema = z.object({
+  emoji: z.string().min(1).max(32),
+})
+
+export default defineEventHandler(async (event) => {
+  const user = await requireUser(event)
+  const id = Number(getRouterParam(event, 'id'))
+  if (!Number.isInteger(id) || id <= 0) {
+    throw createError({ statusCode: 400, statusMessage: 'Ungültige ID' })
+  }
+  const { emoji } = await readValidatedBody(event, bodySchema.parse)
+  const db = useDb()
+
+  const [comment] = await db
+    .select({ id: comments.id, uploadId: comments.uploadId })
+    .from(comments)
+    .where(eq(comments.id, id))
+    .limit(1)
+  if (!comment) {
+    throw createError({ statusCode: 404, statusMessage: 'Kommentar nicht gefunden' })
+  }
+
+  const existing = await db
+    .select({ userId: commentReactions.userId })
+    .from(commentReactions)
+    .where(and(
+      eq(commentReactions.commentId, id),
+      eq(commentReactions.userId, user.id),
+      eq(commentReactions.emoji, emoji),
+    ))
+    .limit(1)
+
+  let active: boolean
+  if (existing.length) {
+    await db.delete(commentReactions).where(and(
+      eq(commentReactions.commentId, id),
+      eq(commentReactions.userId, user.id),
+      eq(commentReactions.emoji, emoji),
+    ))
+    active = false
+  }
+  else {
+    await db.insert(commentReactions).values({ commentId: id, userId: user.id, emoji })
+    active = true
+  }
+
+  const [{ total }] = await db
+    .select({ total: sql<number>`count(*)` })
+    .from(commentReactions)
+    .where(and(eq(commentReactions.commentId, id), eq(commentReactions.emoji, emoji)))
+  const count = Number(total)
+
+  broadcastToAll({
+    type: 'reaction',
+    commentId: id,
+    uploadId: comment.uploadId,
+    emoji,
+    actorId: user.id,
+    actorName: user.name,
+    active,
+    count,
+  })
+
+  return { active, count }
+})