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Merged
sametekinpolat merged 8 commits into from
May 3, 2026
Merged

57 like and dislike #71

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730ce73
feat(schema) #52: add postKarma and commentKarma to User model
sametekinpolat May 3, 2026
b3e79b1
feat(utils) #57: add formatKarma and slugify helpers
sametekinpolat May 3, 2026
d0ebeb9
feat #57: add votePostAction with karma tracking; author self-vote on…
sametekinpolat May 3, 2026
2a855de
feat #57: add voteCommentAction karma tracking; author self-vote on c…
sametekinpolat May 3, 2026
263960f
feat #57: expose myVote on post and authorKarma on all authors
sametekinpolat May 3, 2026
a17e956
feat #57: interactive post vote column; author karma tooltips
sametekinpolat May 3, 2026
9075c6e
feat #57: interactive post vote buttons with optimistic UI
sametekinpolat May 3, 2026
196ad9d
feat #57 #55: add /u/[username] profile page with karma breakdown
sametekinpolat May 3, 2026
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4 changes: 3 additions & 1 deletion prisma/schema.prisma
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Original file line number Diff line number Diff line change
Expand Up @@ -72,7 +72,9 @@ model User {
emailVerified DateTime?
image String?
passwordHash String?
karmaScore Int @default(0) // Requires Postgres Trigger or $transaction to sync
karmaScore Int @default(0) // Kept for legacy; use postKarma + commentKarma for display
postKarma Int @default(0)
commentKarma Int @default(0)
bannerImageUrl String?
createdAt DateTime @default(now())

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159 changes: 123 additions & 36 deletions src/actions/comments.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -48,13 +48,27 @@ export async function createCommentAction(
}

try {
await prisma.comment.create({
data: {
postId,
userId: session.user.id,
body: validated.data.body,
parentCommentId: parentCommentId ?? null,
},
// Use interactive transaction so we can reference the new comment's id for self-vote.
// Self-vote does NOT count toward comment karma (see AC #58).
await prisma.$transaction(async (tx) => {
const comment = await tx.comment.create({
data: {
postId,
userId: session.user.id,
body: validated.data.body,
parentCommentId: parentCommentId ?? null,
upvotes: 1, // author self-vote
},
select: { id: true },
});

await tx.commentVote.create({
data: {
userId: session.user.id,
commentId: comment.id,
voteValue: 1,
},
});
});

revalidatePath(
Expand Down Expand Up @@ -157,12 +171,16 @@ export async function voteCommentAction(
where: { id: commentId, isDeleted: false },
select: {
id: true,
userId: true,
postId: true,
post: { select: { title: true, community: { select: { name: true } } } },
},
});
if (!comment) return { error: "Comment not found." };

// Self-votes never affect karma (AC #58)
const isSelfVote = comment.userId === session.user.id;

const existing = await prisma.commentVote.findUnique({
where: { userId_commentId: { userId: session.user.id, commentId } },
});
Expand All @@ -171,53 +189,122 @@ export async function voteCommentAction(
if (existing) {
if (existing.voteValue === voteValue) {
// Toggle off — remove vote
if (isSelfVote) {
await prisma.$transaction([
prisma.commentVote.delete({
where: {
userId_commentId: { userId: session.user.id, commentId },
},
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { decrement: 1 } : undefined,
downvotes: voteValue === -1 ? { decrement: 1 } : undefined,
},
}),
]);
} else {
await prisma.$transaction([
prisma.commentVote.delete({
where: {
userId_commentId: { userId: session.user.id, commentId },
},
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { decrement: 1 } : undefined,
downvotes: voteValue === -1 ? { decrement: 1 } : undefined,
},
}),
prisma.user.update({
where: { id: comment.userId },
data: {
commentKarma: voteValue === 1 ? { decrement: 1 } : { increment: 1 },
},
}),
]);
}
} else {
// Change vote direction (e.g. upvote → downvote)
// Net karma delta = newValue - oldValue (±2)
if (isSelfVote) {
await prisma.$transaction([
prisma.commentVote.update({
where: {
userId_commentId: { userId: session.user.id, commentId },
},
data: { voteValue },
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { increment: 1 } : { decrement: 1 },
downvotes: voteValue === -1 ? { increment: 1 } : { decrement: 1 },
},
}),
]);
} else {
await prisma.$transaction([
prisma.commentVote.update({
where: {
userId_commentId: { userId: session.user.id, commentId },
},
data: { voteValue },
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { increment: 1 } : { decrement: 1 },
downvotes: voteValue === -1 ? { increment: 1 } : { decrement: 1 },
},
}),
prisma.user.update({
where: { id: comment.userId },
data: {
// Was -1 → now +1: delta +2 | Was +1 → now -1: delta -2
commentKarma: voteValue === 1 ? { increment: 2 } : { decrement: 2 },
},
}),
]);
}
}
} else {
// New vote
if (isSelfVote) {
await prisma.$transaction([
prisma.commentVote.delete({
where: {
userId_commentId: { userId: session.user.id, commentId },
},
prisma.commentVote.create({
data: { userId: session.user.id, commentId, voteValue },
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { decrement: 1 } : undefined,
downvotes: voteValue === -1 ? { decrement: 1 } : undefined,
upvotes: voteValue === 1 ? { increment: 1 } : undefined,
downvotes: voteValue === -1 ? { increment: 1 } : undefined,
},
}),
]);
} else {
// Change vote direction
await prisma.$transaction([
prisma.commentVote.update({
where: {
userId_commentId: { userId: session.user.id, commentId },
},
data: { voteValue },
prisma.commentVote.create({
data: { userId: session.user.id, commentId, voteValue },
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { increment: 1 } : { decrement: 1 },
downvotes:
voteValue === -1 ? { increment: 1 } : { decrement: 1 },
upvotes: voteValue === 1 ? { increment: 1 } : undefined,
downvotes: voteValue === -1 ? { increment: 1 } : undefined,
},
}),
prisma.user.update({
where: { id: comment.userId },
data: {
commentKarma: voteValue === 1 ? { increment: 1 } : { decrement: 1 },
},
}),
]);
}
} else {
// New vote
await prisma.$transaction([
prisma.commentVote.create({
data: { userId: session.user.id, commentId, voteValue },
}),
prisma.comment.update({
where: { id: commentId },
data: {
upvotes: voteValue === 1 ? { increment: 1 } : undefined,
downvotes: voteValue === -1 ? { increment: 1 } : undefined,
},
}),
]);
}

revalidatePath(
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