# Authorization

The most important file in this module is validation.guard.ts, this guard is exported in the authorization module, and this guard is used in the authentication module.

```typescript
// Core
import type { CanActivate, ExecutionContext } from "@nestjs/common";
import { Injectable } from "@nestjs/common";
import {
  TranslationAdapter,
  GenericException,
  PartnerStatusEnum,
  UserPartnerStatusEnum,
  ERROR_CODE,
} from "@inlaze_techlead/inlaze-common";
import { Reflector } from "@nestjs/core";
import { HttpStatusCode } from "axios";
import type { PartnerEntity, UserDefault } from "@inlaze_techlead/inlaze-typeorm";

// Decorators
import type { Validations } from "../decorators";
import { VALIDATION_CHECKER_KEY, PUBLIC_VALIDATION_CHECKER_KEY } from "../decorators";

// Types
import type { IValidationGuard, ValidateFunctionResponse } from "../types";

// Enums
import type { ValidationEnum } from "../enums";

// Constants
const ALLOWED_USERS_POSTBACK: string[] = ["156", "667"];

@Injectable()
export class ValidationGuard implements CanActivate, IValidationGuard {
  public constructor(
    private readonly translationAdapter: TranslationAdapter,
    private readonly reflector: Reflector,
  ) {}

  public level(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [partner.level !== null, "default.auth.has-level"];
  }

  public terms(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [Boolean(partner.isTerms), "default.auth.has-terms"];
  }

  public active(user: UserDefault): ValidateFunctionResponse {
    return [user.isActive, "default.auth.is-active"];
  }

  public bankInfo(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    if (partner.bankStatus !== UserPartnerStatusEnum.ACCEPTED)
      throw new GenericException(
        this.translationAdapter.translate("default.auth.is-bank-info-valid"),
        HttpStatusCode.Forbidden,
        ERROR_CODE.BANK_INFO_INVALID.code,
      );

    return [true, "default.auth.is-bank-info-valid"];
  }

  public basicInfo(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [
      partner.basicInfoStatus === UserPartnerStatusEnum.ACCEPTED,
      "default.auth.is-basic-info-valid",
    ];
  }

  public email(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [Boolean(partner.isEmailValid), "default.auth.is-email-valid"];
  }

  public fullRegistered(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [partner.status === PartnerStatusEnum.VALIDATED, "default.auth.is-full-registered"];
  }

  public banned(user: UserDefault): ValidateFunctionResponse {
    return [!user.isBanned, "default.auth.is-not-banned"];
  }

  public postback(user: UserDefault): ValidateFunctionResponse {
    return [ALLOWED_USERS_POSTBACK.includes(user.id), "default.auth.postback-allowed"];
  }

  public verified(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [partner.status !== PartnerStatusEnum.REGISTERED, "default.auth.is-to-be-verified"];
  }

  public referral(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [Boolean(partner.isReferralEnabled), "default.auth.is-to-be-verified"];
  }

  public campaigns(): ValidateFunctionResponse {
    return [true, "default.auth.campaigns-forbidden"];
  }

  public players(user: UserDefault, partner: PartnerEntity): ValidateFunctionResponse {
    return [Boolean(partner.hasPlayersAvailable), "default.auth.players-forbidden"];
  }

  public executeValidation(
    validation: ValidationEnum,
    user: UserDefault,
    partner: PartnerEntity,
  ): ValidateFunctionResponse {
    return this[validation](user, partner);
  }

  public canActivate(context: ExecutionContext): boolean {
    const validations: Validations[] = this.reflector.getAllAndOverride<Validations[]>(
      VALIDATION_CHECKER_KEY,
      [context.getHandler(), context.getClass()],
    );
    const isPublic: boolean = this.reflector.get(
      PUBLIC_VALIDATION_CHECKER_KEY,
      context.getHandler(),
    );
    if (isPublic) return true;
    const request = context.switchToHttp().getRequest();
    const user: UserDefault | undefined = request.user.user,
      partner: PartnerEntity | undefined = request.user.partner;
    if (!validations.length || !user || !partner) return true;
    const validate = validations.map((validation) =>
      this.executeValidation(validation, user, partner),
    );
    const allow = validate.find((item) => !item[0]);
    if (allow)
      throw new GenericException(
        this.translationAdapter.translate(allow[1]),
        HttpStatusCode.Forbidden,
        ERROR_CODE.PARTNER_VALIDATION_FAILED.code,
      );
    return true;
  }
}

```


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