FIX Catcha

src/captcha/entities/db-service/captcha-challenge.db.service.ts

@@ -0,0 +1,33 @@
+import { Injectable } from "@nestjs/common";
+import { InjectModel } from "@nestjs/mongoose";
+import { Model } from "mongoose";
+import {
+  CaptchaChallenge,
+  CaptchaChallengeDocument,
+} from "../schema/captcha-challenge.schema";
+
+@Injectable()
+export class CaptchaChallengeDbService {
+  constructor(
+    @InjectModel(CaptchaChallenge.name)
+    private readonly captchaChallengeModel: Model<CaptchaChallengeDocument>,
+  ) {}
+
+  create(data: CaptchaChallenge): Promise<CaptchaChallengeDocument> {
+    return this.captchaChallengeModel.create(data);
+  }
+
+  findByCaptchaId(
+    captchaId: string,
+  ): Promise<CaptchaChallengeDocument | null> {
+    return this.captchaChallengeModel.findOne({ captchaId });
+  }
+
+  markUsed(captchaId: string): Promise<CaptchaChallengeDocument | null> {
+    return this.captchaChallengeModel.findOneAndUpdate(
+      { captchaId, usedAt: null },
+      { $set: { usedAt: new Date() } },
+      { new: true },
+    );
+  }
+}

src/captcha/entities/schema/captcha-challenge.schema.ts

@@ -0,0 +1,28 @@
+import { Prop, Schema, SchemaFactory } from "@nestjs/mongoose";
+import { HydratedDocument } from "mongoose";
+
+@Schema({ collection: "captcha-challenges", timestamps: true, versionKey: false })
+export class CaptchaChallenge {
+  @Prop({ required: true, unique: true, index: true })
+  captchaId: string;
+
+  @Prop({ required: true })
+  answerHash: string;
+
+  @Prop({ required: true })
+  image: string;
+
+  @Prop({ required: true, index: true })
+  expiresAt: number;
+
+  /** Mongo TTL — document removed shortly after this time. */
+  @Prop({ required: true, expires: 0 })
+  expireAt: Date;
+
+  @Prop({ default: null })
+  usedAt?: Date | null;
+}
+
+export type CaptchaChallengeDocument = HydratedDocument<CaptchaChallenge>;
+export const CaptchaChallengeSchema =
+  SchemaFactory.createForClass(CaptchaChallenge);