feat: add reply and spoiler on comment

prisma/migrations/20260710200857_comment_replies_spoiler/migration.sql

@@ -0,0 +1,9 @@
+-- AlterTable
+ALTER TABLE "Comment" ADD COLUMN     "isSpoiler" BOOLEAN NOT NULL DEFAULT false,
+ADD COLUMN     "parentId" TEXT;
+
+-- CreateIndex
+CREATE INDEX "Comment_parentId_idx" ON "Comment"("parentId");
+
+-- AddForeignKey
+ALTER TABLE "Comment" ADD CONSTRAINT "Comment_parentId_fkey" FOREIGN KEY ("parentId") REFERENCES "Comment"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -188,7 +188,9 @@ model Comment {
   id        String      @id @default(uuid(7))
   content   String
   type      CommentType
+  isSpoiler Boolean     @default(false)
   userId    String
+  parentId  String?
   animeId   String?
   mangaId   String?
   tvShowId  String?
@@ -200,6 +202,8 @@ model Comment {
   updatedAt DateTime    @updatedAt
 
   user      User       @relation(fields: [userId], references: [id], onDelete: Cascade)
+  parent    Comment?   @relation("CommentReplies", fields: [parentId], references: [id], onDelete: Cascade)
+  replies   Comment[]  @relation("CommentReplies")
   anime     Anime?     @relation(fields: [animeId], references: [id], onDelete: Cascade)
   manga     Manga?     @relation(fields: [mangaId], references: [id], onDelete: Cascade)
   tvShow    TvShow?    @relation(fields: [tvShowId], references: [id], onDelete: Cascade)
@@ -218,6 +222,7 @@ model Comment {
   @@index([gameId])
   @@index([bookId])
   @@index([profileId])
+  @@index([parentId])
 }
 
 enum ReactionType {

src/modules/comment/dto/create-comment.dto.ts

@@ -1,9 +1,11 @@
 import { ApiProperty } from "@nestjs/swagger";
 import { CommentType } from "@prisma/generated/enums";
 import {
+  IsBoolean,
   IsEnum,
   IsNotEmpty,
   IsOptional,
+  IsUUID,
   MaxLength,
   registerDecorator,
   ValidationArguments,
@@ -48,6 +50,21 @@ export class CreateCommentDto {
   @ApiProperty({ type: "string", maxLength: 500 })
   readonly content: string;
 
+  @IsOptional()
+  @IsBoolean()
+  @ApiProperty({ type: "boolean", required: false, default: false })
+  readonly isSpoiler?: boolean;
+
+  @IsOptional()
+  @IsUUID()
+  @ApiProperty({
+    type: "string",
+    format: "uuid",
+    required: false,
+    description: "Parent comment id when replying",
+  })
+  readonly parentId?: string;
+
   @IsOptional()
   @CommentRequiredForType(CommentType.Anime)
   @ApiProperty({

src/modules/comment/service/comment.service.ts

@@ -53,24 +53,50 @@ export class CommentService {
   }
 
   async getComments({ page, itemsPerPage, ...getCommentsDto }: GetCommentsDto) {
+    const userSelect = {
+      id: true,
+      name: true,
+      username: true,
+      profile: {
+        select: {
+          id: true,
+          avatarUrl: true,
+        },
+      },
+    } as const;
+
+    const reactionsInclude = {
+      orderBy: { createdAt: "desc" },
+      select: {
+        id: true,
+        emoji: true,
+        createdAt: true,
+        user: {
+          select: {
+            id: true,
+            username: true,
+          },
+        },
+      },
+    } as const;
+
     const pagination = await this.databaseService.offsetPagination<CommentFindManyArgs>({
       model: "comment",
-      where: { ...getCommentsDto },
+      where: { ...getCommentsDto, parentId: null },
       page,
       itemsPerPage,
       orderBy: { createdAt: "desc" },
       include: {
         user: {
-          select: {
-            id: true,
-            name: true,
-            username: true,
-            profile: {
-              select: {
-                id: true,
-                avatarUrl: true,
-              },
+          select: userSelect,
+        },
+        replies: {
+          orderBy: { createdAt: "asc" },
+          include: {
+            user: {
+              select: userSelect,
             },
+            reactions: reactionsInclude,
           },
         },
         anime: {
@@ -121,20 +147,7 @@ export class CommentService {
             imageUrl: true,
           },
         },
-        reactions: {
-          take: 3,
-          orderBy: { createdAt: "desc" },
-          select: {
-            id: true,
-            emoji: true,
-            createdAt: true,
-            user: {
-              select: {
-                username: true,
-              },
-            },
-          },
-        },
+        reactions: reactionsInclude,
       },
     });