import { Map as ImmutableMap, List as ImmutableList, fromJS } from "immutable";

import { ACCOUNT_BLOCK_SUCCESS, ACCOUNT_MUTE_SUCCESS } from "flavours/glitch/actions/accounts";
import { DOMAIN_BLOCK_SUCCESS } from "flavours/glitch/actions/domain_blocks";

import {
  SUGGESTIONS_FETCH_REQUEST,
  SUGGESTIONS_FETCH_SUCCESS,
  SUGGESTIONS_FETCH_FAIL,
  SUGGESTIONS_DISMISS,
} from "../actions/suggestions";


const initialState = ImmutableMap({
  items: ImmutableList(),
  isLoading: false,
});

export default function suggestionsReducer(state = initialState, action) {
  switch(action.type) {
    case SUGGESTIONS_FETCH_REQUEST:
      return state.set("isLoading", true);
    case SUGGESTIONS_FETCH_SUCCESS:
      return state.withMutations(map => {
        map.set("items", fromJS(action.suggestions.map(x => ({ ...x, account: x.account.id }))));
        map.set("isLoading", false);
      });
    case SUGGESTIONS_FETCH_FAIL:
      return state.set("isLoading", false);
    case SUGGESTIONS_DISMISS:
      return state.update("items", list => list.filterNot(x => x.account === action.id));
    case ACCOUNT_BLOCK_SUCCESS:
    case ACCOUNT_MUTE_SUCCESS:
      return state.update("items", list => list.filterNot(x => x.account === action.relationship.id));
    case DOMAIN_BLOCK_SUCCESS:
      return state.update("items", list => list.filterNot(x => action.accounts.includes(x.account)));
    default:
      return state;
  }
}