62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
const prisma = require("./client")
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async function findLike(commentId, userId, db) {
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const p = db || prisma
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return p.commentLike.findUnique({
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where: { commentId_userId: { commentId, userId } },
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})
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}
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async function findLikesByUserAndCommentIds(userId, commentIds, db) {
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const p = db || prisma
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return p.commentLike.findMany({
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where: { userId, commentId: { in: commentIds } },
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select: { commentId: true },
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})
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}
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async function setCommentLike({ commentId, userId, like }) {
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return prisma.$transaction(async (tx) => {
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const comment = await tx.comment.findUnique({
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where: { id: commentId },
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select: { id: true, likeCount: true },
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})
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if (!comment) throw new Error("Yorum bulunamadı.")
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const existing = await findLike(commentId, userId, tx)
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if (like) {
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if (existing) {
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return { liked: true, delta: 0, likeCount: comment.likeCount }
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}
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await tx.commentLike.create({
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data: { commentId, userId },
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})
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const updated = await tx.comment.update({
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where: { id: commentId },
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data: { likeCount: { increment: 1 } },
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select: { likeCount: true },
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})
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return { liked: true, delta: 1, likeCount: updated.likeCount }
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}
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if (!existing) {
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return { liked: false, delta: 0, likeCount: comment.likeCount }
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}
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await tx.commentLike.delete({
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where: { commentId_userId: { commentId, userId } },
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})
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const updated = await tx.comment.update({
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where: { id: commentId },
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data: { likeCount: { decrement: 1 } },
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select: { likeCount: true },
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})
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return { liked: false, delta: -1, likeCount: updated.likeCount }
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})
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}
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module.exports = {
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findLikesByUserAndCommentIds,
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setCommentLike,
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}
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