import * as actions from './authActions'
import { ITokens } from './localStorage'

export interface IAuthState<P> {
  initialized: boolean
  principal: P | null
  tokens: ITokens | null
}

export function authReducer<P = any>(state: IAuthState<P>, action: any): IAuthState<P> {
  switch (action.type) {
    case actions.AUTH_INIT:
      return {
        ...state,
        initialized: true,
      }

    case actions.AUTH_LOGIN:
    case actions.AUTH_REFRESH:
      return {
        ...state,
        principal: action.principal,
        tokens: action.tokens,
      }

    case actions.AUTH_LOGOUT:
      return {
        ...state,
        principal: null,
        tokens: null,
      }

    default:
      return (
        state || {
          initialized: false,
          principal: null,
          tokens: null,
        }
      )
  }
}