import { forwardRef, Inject, Injectable, NestMiddleware } from '@nestjs/common'
import { debug, Debugger } from 'debug'
import { isNil } from 'lodash'

import { AuthenticationService } from '../services'

@Injectable()
export class ValidateLocaleMiddleware implements NestMiddleware {
  logger: Debugger

  constructor(
    @Inject(forwardRef(() => AuthenticationService))
    private readonly authenticationService: AuthenticationService,
  ) {
    this.logger = debug('validate-locale')
  }

  async use(req: any, res: any, next: () => void) {
    const sessionVariable = req.body?.session_variables || {}
    const patientId = sessionVariable['x-hasura-user-id']

    this.logger.extend(':')(`Validating locale`)

    if (patientId && isNil(sessionVariable['x-hasura-locale']))
      try {
        this.authenticationService.revokePatientToken(patientId)
        this.logger.extend(':')(`Patient token revocked: ${patientId}`)
      } catch (error) {}

    next()
  }
}