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()
  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);