import api from '../api';
import { normalizeAnnouncement } from './importer/normalizer';

export const ANNOUNCEMENTS_FETCH_REQUEST = 'ANNOUNCEMENTS_FETCH_REQUEST';
export const ANNOUNCEMENTS_FETCH_SUCCESS = 'ANNOUNCEMENTS_FETCH_SUCCESS';
export const ANNOUNCEMENTS_FETCH_FAIL    = 'ANNOUNCEMENTS_FETCH_FAIL';
export const ANNOUNCEMENTS_UPDATE        = 'ANNOUNCEMENTS_UPDATE';

export const ANNOUNCEMENTS_REACTION_ADD_REQUEST = 'ANNOUNCEMENTS_REACTION_ADD_REQUEST';
export const ANNOUNCEMENTS_REACTION_ADD_SUCCESS = 'ANNOUNCEMENTS_REACTION_ADD_SUCCESS';
export const ANNOUNCEMENTS_REACTION_ADD_FAIL    = 'ANNOUNCEMENTS_REACTION_ADD_FAIL';

export const ANNOUNCEMENTS_REACTION_REMOVE_REQUEST = 'ANNOUNCEMENTS_REACTION_REMOVE_REQUEST';
export const ANNOUNCEMENTS_REACTION_REMOVE_SUCCESS = 'ANNOUNCEMENTS_REACTION_REMOVE_SUCCESS';
export const ANNOUNCEMENTS_REACTION_REMOVE_FAIL    = 'ANNOUNCEMENTS_REACTION_REMOVE_FAIL';

export const ANNOUNCEMENTS_REACTION_UPDATE = 'ANNOUNCEMENTS_REACTION_UPDATE';

export const ANNOUNCEMENTS_TOGGLE_SHOW = 'ANNOUNCEMENTS_TOGGLE_SHOW';

const noOp = () => {};

export const fetchAnnouncements = (done = noOp) => (dispatch, getState) => {
  dispatch(fetchAnnouncementsRequest());

  api(getState).get('/api/v1/announcements').then(response => {
    dispatch(fetchAnnouncementsSuccess(response.data.map(x => normalizeAnnouncement(x))));
  }).catch(error => {
    dispatch(fetchAnnouncementsFail(error));
  }).finally(() => {
    done();
  });
};

export const fetchAnnouncementsRequest = () => ({
  type: ANNOUNCEMENTS_FETCH_REQUEST,
  skipLoading: true,
});

export const fetchAnnouncementsSuccess = announcements => ({
  type: ANNOUNCEMENTS_FETCH_SUCCESS,
  announcements,
  skipLoading: true,
});

export const fetchAnnouncementsFail= error => ({
  type: ANNOUNCEMENTS_FETCH_FAIL,
  error,
  skipLoading: true,
  skipAlert: true,
});

export const updateAnnouncements = announcement => ({
  type: ANNOUNCEMENTS_UPDATE,
  announcement: normalizeAnnouncement(announcement),
});

export const addReaction = (announcementId, name) => (dispatch, getState) => {
  const announcement = getState().getIn(['announcements', 'items']).find(x => x.get('id') === announcementId);

  let alreadyAdded = false;

  if (announcement) {
    const reaction = announcement.get('reactions').find(x => x.get('name') === name);
    if (reaction && reaction.get('me')) {
      alreadyAdded = true;
    }
  }

  if (!alreadyAdded) {
    dispatch(addReactionRequest(announcementId, name, alreadyAdded));
  }

  api(getState).put(`/api/v1/announcements/${announcementId}/reactions/${name}`).then(() => {
    dispatch(addReactionSuccess(announcementId, name, alreadyAdded));
  }).catch(err => {
    if (!alreadyAdded) {
      dispatch(addReactionFail(announcementId, name, err));
    }
  });
};

export const addReactionRequest = (announcementId, name) => ({
  type: ANNOUNCEMENTS_REACTION_ADD_REQUEST,
  id: announcementId,
  name,
  skipLoading: true,
});

export const addReactionSuccess = (announcementId, name) => ({
  type: ANNOUNCEMENTS_REACTION_ADD_SUCCESS,
  id: announcementId,
  name,
  skipLoading: true,
});

export const addReactionFail = (announcementId, name, error) => ({
  type: ANNOUNCEMENTS_REACTION_ADD_FAIL,
  id: announcementId,
  name,
  error,
  skipLoading: true,
});

export const removeReaction = (announcementId, name) => (dispatch, getState) => {
  dispatch(removeReactionRequest(announcementId, name));

  api(getState).delete(`/api/v1/announcements/${announcementId}/reactions/${name}`).then(() => {
    dispatch(removeReactionSuccess(announcementId, name));
  }).catch(err => {
    dispatch(removeReactionFail(announcementId, name, err));
  });
};

export const removeReactionRequest = (announcementId, name) => ({
  type: ANNOUNCEMENTS_REACTION_REMOVE_REQUEST,
  id: announcementId,
  name,
  skipLoading: true,
});

export const removeReactionSuccess = (announcementId, name) => ({
  type: ANNOUNCEMENTS_REACTION_REMOVE_SUCCESS,
  id: announcementId,
  name,
  skipLoading: true,
});

export const removeReactionFail = (announcementId, name, error) => ({
  type: ANNOUNCEMENTS_REACTION_REMOVE_FAIL,
  id: announcementId,
  name,
  error,
  skipLoading: true,
});

export const updateReaction = reaction => ({
  type: ANNOUNCEMENTS_REACTION_UPDATE,
  reaction,
});

export function toggleShowAnnouncements() {
  return dispatch => {
    dispatch({ type: ANNOUNCEMENTS_TOGGLE_SHOW });
  };
}