import { Action } from "redux";
import { User } from "../../types/user";
import { SET_CURRENT_USER, setCurrentUserAction } from "../actions/auth";
import { FETCH_PROFILE_SUCCESS, fetchProfileSuccessAction, updateProfileSuccessAction, UPDATE_PROFILE_SUCCESS, updateProfileRequestAction } from "../actions/profile";
import { Workgroup } from "../../types/workgroup";
import { FETCH_WORKGROUPS_SUCCESS, fetchWorkgroupsSuccessAction } from "../actions/workgroups";

export interface WorkgroupsState {
  workgroupsById: { [id in string]: Workgroup }
}

const defaultState = {
  workgroupsById: {}
};

export function workgroupsReducer(state = defaultState, action: Action): WorkgroupsState {
  switch (action.type) {
    case FETCH_WORKGROUPS_SUCCESS:
      return handleFetchWorkgroups(state, action as fetchWorkgroupsSuccessAction);

  }
  return state;
}

function handleFetchWorkgroups(state: WorkgroupsState, { workgroups }: fetchWorkgroupsSuccessAction): WorkgroupsState {
  const workgroupsById = {
    ...state.workgroupsById, 
  };

  workgroups.forEach(wg => {
    workgroupsById[wg.id] = wg;
  });

  return {
    ...state,
    workgroupsById,
  };
};