first commit

src/modules/likes/likes.repository.ts

@@ -0,0 +1,31 @@
+import { Injectable } from '@nestjs/common';
+import { InjectModel } from '@nestjs/mongoose';
+import { Model, Types } from 'mongoose';
+import { Like, LikeDocument } from './schemas/like.schema';
+
+@Injectable()
+export class LikesRepository {
+  constructor(@InjectModel(Like.name) private readonly likeModel: Model<LikeDocument>) {}
+
+  async findOne(userId: string, targetId: string, targetType: 'post' | 'comment'): Promise<LikeDocument | null> {
+    return this.likeModel
+      .findOne({
+        userId: new Types.ObjectId(userId),
+        targetId: new Types.ObjectId(targetId),
+        targetType,
+      })
+      .exec();
+  }
+
+  async create(userId: string, targetId: string, targetType: 'post' | 'comment'): Promise<LikeDocument> {
+    return this.likeModel.create({
+      userId: new Types.ObjectId(userId),
+      targetId: new Types.ObjectId(targetId),
+      targetType,
+    });
+  }
+
+  async deleteById(id: string): Promise<void> {
+    await this.likeModel.findByIdAndDelete(id).exec();
+  }
+}