module Update
  ( Action(..)
  , actions
  , updateModel
  ) where

import Model exposing (Model)
import Model.Payment exposing (Payments)
import Model.View exposing (..)
import Model.View.SignIn exposing (..)

import Update.SignIn exposing (..)

type Action =
  NoOp
  | SignIn
  | SignInError String
  | UpdateSignIn SignInAction
  | UpdatePayments Payments

actions : Signal.Mailbox Action
actions = Signal.mailbox NoOp

updateModel : Action -> Model -> Model
updateModel action model =
  case action of
    NoOp ->
      model
    SignIn ->
      { model | view <- SignInView initSignIn }
    SignInError msg ->
      let signIn = { initSignIn | result <- Just (Err msg) }
      in  { model | view <- SignInView signIn }
    UpdateSignIn signInAction ->
      case model.view of
        SignInView signIn ->
          { model | view <- SignInView (updateSignIn signInAction signIn) }
        _ ->
          model
    UpdatePayments payments ->
      { model | view <- PaymentView payments }