graycoreio/daffodil

import { DaffStateError } from '@daffodil/core/state';
import { DaffNewsletterSubmission } from '@daffodil/newsletter';

import {
  DaffNewsletterActions,
  DaffNewsletterActionTypes,
} from './../actions/newsletter.actions';
import { DAFF_NEWSLETTER_STORE_FEATURE_KEY } from './newsletter-store-feature-key';

export interface DaffNewsletterState {
  success: boolean;
  loading: boolean;
  error: DaffStateError;
}

export interface DaffNewsletterStateRootSlice {
  [DAFF_NEWSLETTER_STORE_FEATURE_KEY]: DaffNewsletterState;
}

const initialState: DaffNewsletterState = {
  success: false,
  loading: false,
  error: null,
};

export function reducer<T extends DaffNewsletterSubmission>(state: DaffNewsletterState = initialState, action: DaffNewsletterActions<T>) {
  switch (action.type) {
    case DaffNewsletterActionTypes.NewsletterRetry:
    case DaffNewsletterActionTypes.NewsletterSubscribeAction:
      return { ...state, loading: true };
    case DaffNewsletterActionTypes.NewsletterFailedSubscribeAction:
      return { ...state, loading: false, error: action.payload };
    case DaffNewsletterActionTypes.NewsletterCancelAction:
      return { ...state, loading: false };
    case DaffNewsletterActionTypes.NewsletterSuccessSubscribeAction:
      return { ...state, success: true, loading: false };
    case DaffNewsletterActionTypes.NewsletterReset:
      return { ...state, ...initialState };
    default:
      return state;
  }
}