import logger from 'app/services/logger';
import { getCredentials } from 'app/components/auth/reducer';
import {
  getActiveAccount,
  getAvailableAccounts,
} from 'app/components/accounts/reducer';

import AbstractState from './AbstractState';
import ChooseAccountState from './ChooseAccountState';
import CompleteState from './CompleteState';
import ForgotPasswordState from './ForgotPasswordState';
import LoginState from './LoginState';
import MfaState from './MfaState';
import { AuthContext } from './AuthFlow';

export default class PasswordState extends AbstractState {
  enter(context: AuthContext) {
    const { login, isTotpRequired } = getCredentials(context.getState());

    if (isTotpRequired) {
      context.setState(new MfaState());
    } else if (login) {
      context.navigate('/password');
    } else {
      context.setState(new CompleteState());
    }
  }

  resolve(
    context: AuthContext,
    {
      password,
      rememberMe,
    }: {
      password: string;
      rememberMe: boolean;
    },
  ) {
    const { login, returnUrl } = getCredentials(context.getState());

    return context
      .run('login', {
        password,
        rememberMe,
        login,
      })
      .then(() => {
        const { isTotpRequired } = getCredentials(context.getState());

        if (isTotpRequired) {
          return context.setState(new MfaState());
        }

        if (returnUrl) {
          context.navigate(returnUrl);

          return;
        }

        return context.setState(new CompleteState());
      })
      .catch((err = {}) => err.errors || logger.warn('Error logging in', err));
  }

  reject(context: AuthContext) {
    context.setState(new ForgotPasswordState());
  }

  goBack(context: AuthContext) {
    const state = context.getState();
    const { isRelogin } = getCredentials(state);

    if (isRelogin) {
      const availableAccounts = getAvailableAccounts(state);
      const accountToRemove = getActiveAccount(state);

      if (availableAccounts.length === 1 || !accountToRemove) {
        context.run('logout');
        context.run('setLogin', null);
        context.setState(new LoginState());
      } else {
        const accountToReplace = availableAccounts.find(
          ({ id }) => id !== accountToRemove.id,
        );

        context.run('activateAccount', accountToReplace);
        context.run('removeAccount', accountToRemove);
        context.setState(new ChooseAccountState());
      }
    } else {
      context.run('setLogin', null);
      context.setState(new LoginState());
    }
  }
}