export interface Loadable {
  isLoading: boolean;
  success: boolean;
  error: any | null;
}

export interface LoadableActionTypes {
  isLoadingAction: string;
  successAction: string;
  errorAction: string;
  clearAction: string;
}

export const INITIAL_LOADABLE_STATE: Loadable = {
  isLoading: false,
  success: false,
  error: null,
};

export const withLoadable = (actionTypes: LoadableActionTypes) =>
  reducer =>
    (state, action) => {
      switch (action.type) {
        case actionTypes.isLoadingAction: {
          return {
            ...state,
            isLoading: true,
            success: false,
            error: null,
          };
        }
        case actionTypes.errorAction: {
          return {
            ...state,
            isLoading: false,
            error: action.payload,
            success: false,
          };
        }
        case actionTypes.successAction: {
          return {
            ...state,
            ...action.payload,
            isLoading: false,
            success: true,
            error: null,
          };
        }
        case actionTypes.clearAction: {
          return {
            ...state,
            ...INITIAL_LOADABLE_STATE,
          };
        }
        default: {
          return reducer(state, action);
        }
      }
    };