import { on } from '@ngrx/store';

import { HttpError } from 'ish-core/models/http-error/http-error.model';

export function payload<P>() {
  return (args: P) => ({ payload: { ...args } });
}

export function httpError<P = {}>() {
  return (args: { error: HttpError } & P) => ({ payload: { ...args } });
}

/* eslint-disable @typescript-eslint/no-explicit-any */

export function setLoadingOn<S = any>(...actionCreators: any) {
  const stateFnc = (state: any) => ({
    ...state,
    loading: typeof state.loading === 'boolean' ? true : state.loading + 1,
  });
  return on<S, any>(...actionCreators, stateFnc);
}

export function unsetLoadingOn<S = any>(...actionCreators: any) {
  const stateFnc = (state: any) => ({
    ...state,
    loading: typeof state.loading === 'boolean' ? false : state.loading - 1,
  });
  return on<S, any>(...actionCreators, stateFnc);
}

function calculateLoading<T extends boolean | number, S extends { loading: T }>(state: S): T {
  if (typeof state.loading === 'number' && state.loading - 1 < 0) {
    console.warn('State loading would be decreased below 0.');
  }
  return (typeof state.loading === 'boolean' ? false : Math.max((state.loading as number) - 1, 0)) as T;
}

export function unsetLoadingAndErrorOn<S = any>(...actionCreators: any) {
  const stateFnc = (state: any) => ({
    ...state,
    loading: calculateLoading(state),
    error: undefined as HttpError,
  });
  return on<S, any>(...actionCreators, stateFnc);
}

export function setErrorOn<S = any>(...actionCreators: any) {
  const stateFnc = (state: any, action: { payload: { error: HttpError }; type: string }) => ({
    ...state,
    error: action.payload.error,
    loading: calculateLoading(state),
  });
  return on<S, any>(...actionCreators, stateFnc);
}