icynet-auth-server/src/modules/oauth2/adapter/user.adapter.ts

import { OAuth2UserAdapter, OAuth2User } from '@icynet/oauth2-provider';
import { Injectable } from '@nestjs/common';
import { Request } from 'express';
import { ParamsDictionary } from 'express-serve-static-core';
import { ParsedQs } from 'qs';
import { OAuth2ClientService } from 'src/modules/objects/oauth2-client/oauth2-client.service';
import { UserService } from 'src/modules/objects/user/user.service';
import { FormUtilityService } from 'src/modules/utility/services/form-utility.service';

@Injectable()
export class UserAdapter implements OAuth2UserAdapter {
  constructor(
    private readonly userService: UserService,
    private readonly clientService: OAuth2ClientService,
    private readonly form: FormUtilityService,
  ) {}

  getId(user: OAuth2User): number {
    return user.id as number;
  }

  async fetchById(id: number): Promise<OAuth2User> {
    const find = await this.userService.getById(id);

    if (!find) {
      return null;
    }

    return {
      id: find.id,
      username: find.username,
      password: find.password,
    };
  }

  async fetchByUsername(username: string): Promise<OAuth2User> {
    const find = await this.userService.getByUsername(username);

    if (!find) {
      return null;
    }

    return {
      id: find.id,
      username: find.username,
      password: find.password,
    };
  }

  checkPassword(user: OAuth2User, password: string): Promise<boolean> {
    return this.userService.comparePasswords(user.password, password);
  }

  async fetchFromRequest(
    req: Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>,
  ): Promise<OAuth2User> {
    return req.user;
  }

  async consented(
    userId: number,
    clientId: string,
    scope: string | string[],
  ): Promise<boolean> {
    return this.clientService.hasAuthorized(
      userId,
      clientId,
      this.form.splitScope(scope),
    );
  }

  async consent(
    userId: number,
    clientId: string,
    scope: string | string[],
  ): Promise<boolean> {
    const client = await this.clientService.getById(clientId);
    const user = await this.userService.getById(userId);
    await this.clientService.createAuthorization(
      user,
      client,
      this.form.splitScope(scope),
    );
    return true;
  }
}