import { Injectable } from '@nestjs/common'

import { UserNotFoundError } from '../../errors'
import { Roles } from '../../models'
import { PatientRepository } from '../../repositories'
import { LanguageCountryCode } from '../../utils'

import { AuthenticationService } from './authentication.service'
import { AuthTokenHelper } from './helpers'

@Injectable()
export class TokenValidatorService {
  constructor(
    private readonly authentication: AuthenticationService,
    private readonly patientRepository: PatientRepository,
  ) {}

  async validatePatientToken(login: string, token: string): Promise<string> {
    const patient = await this.patientRepository.findByLogin(login)

    if (!patient) throw new UserNotFoundError(login)

    if (AuthTokenHelper.authTokenIsValid(patient, token)) {
      return await this.authentication.getAccessToken(
        patient.id,
        null,
        Roles.PATIENT,
        patient.country_code as LanguageCountryCode,
      )
    }
  }
}