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|
module Main exposing (Model, Msg(..), init, main, subscriptions, update, view, viewLink)
import Browser
import Browser.Navigation as Nav
import Cart
import Catalog
import Checkout
import Css exposing (..)
import Html
import Html.Styled exposing (..)
import Html.Styled.Attributes exposing (..)
import Html.Styled.Events exposing (..)
import Http
import Json.Encode as Encode
import Login
import Product
import Profile
import Signup
import Styles exposing (..)
import Url
import Url.Parser as P exposing ((</>), Parser, int, oneOf, s, string)
-- MAIN
main : Program () Model Msg
main =
Browser.application
{ init = init
, view = view
, update = update
, subscriptions = subscriptions
, onUrlChange = UrlChanged
, onUrlRequest = LinkClicked
}
-- MODEL
type Route
= LoginPage
| SignupPage
| HomePage
| CatalogPage
| CartPage
| ProductPage Int
| CheckoutPage
| ProfilePage
| NotFoundPage
parseRoute : Parser (Route -> a) a
parseRoute =
oneOf
[ P.map LoginPage (P.s "login")
, P.map HomePage P.top
, P.map CatalogPage (P.s "catalog")
, P.map CartPage (P.s "cart")
, P.map SignupPage (P.s "signup")
, P.map CheckoutPage (P.s "checkout")
, P.map ProductPage (P.s "product" </> P.int)
, P.map ProfilePage (P.s "profile")
]
type alias Model =
{ key : Nav.Key
, url : Url.Url
, location : Route
, loginModel : Login.Model
, catalogModel : Catalog.Model
, productModel : Product.Model
, signupModel : Signup.Model
, cartModel : Cart.Model
, checkoutModel : Checkout.Model
, profileModel : Profile.Model
}
init : () -> Url.Url -> Nav.Key -> ( Model, Cmd Msg )
init flags url key =
let
start =
HomePage
login =
Login.init
catalog =
Catalog.init
product =
Product.init
signup =
Signup.init
cart =
Cart.init
checkout =
Checkout.init
profile =
Profile.init
in
( Model key url start login catalog product signup cart checkout profile, Cmd.none )
-- UPDATE
type Msg
= LinkClicked Browser.UrlRequest
| UrlChanged Url.Url
| LoginMessage Login.Msg
| CatalogMessage Catalog.Msg
| ProductMessage Product.Msg
| SignupMessage Signup.Msg
| CartMessage Cart.Msg
| CheckoutMessage Checkout.Msg
| ProfileMessage Profile.Msg
| LogoutPressed
| LogoutSuccess (Result Http.Error ())
update : Msg -> Model -> ( Model, Cmd Msg )
update msg model =
case msg of
LinkClicked urlRequest ->
case urlRequest of
Browser.Internal url ->
( model, Nav.pushUrl model.key (Url.toString url) )
Browser.External href ->
( model, Nav.load href )
LogoutPressed ->
( model, tryLogout )
LogoutSuccess _ ->
( { model | loginModel = Login.init }, Nav.replaceUrl model.key "/login" )
UrlChanged url ->
let
parsedUrl =
P.parse parseRoute url
in
case parsedUrl of
Just CatalogPage ->
( { model | location = CatalogPage }, Cmd.map CatalogMessage Catalog.fetchProducts )
Just (ProductPage id) ->
let
cmds =
List.map (Cmd.map ProductMessage)
[ Product.fetchListing id
, Product.fetchRatings id
]
in
( { model | location = ProductPage id }, Cmd.batch cmds )
Just CartPage ->
let
cmd =
Cmd.map CartMessage Cart.fetchCartItems
in
( { model | location = CartPage }, cmd )
Just CheckoutPage ->
let
_ =
Debug.log "err" "loading checkout page ..."
cmd =
Cmd.map CheckoutMessage Checkout.fetchAmount
in
( { model | location = CheckoutPage }, cmd )
Just ProfilePage ->
let
cmd =
Cmd.map ProfileMessage Profile.tryFetchProfile
in
( { model | location = ProfilePage }, cmd )
Just p ->
( { model | location = p }, Cmd.none )
Nothing ->
( { model | location = NotFoundPage }, Cmd.none )
LoginMessage lm ->
let
( lmn, cmd ) =
Login.update lm model.loginModel
redir =
case lmn.loginStatus of
Login.LoggedIn ->
Nav.replaceUrl model.key "/catalog"
_ ->
Cmd.none
in
( { model | loginModel = lmn }, Cmd.batch [ Cmd.map LoginMessage cmd, redir ] )
SignupMessage sm ->
let
( smn, cmd ) =
Signup.update sm model.signupModel
redir =
case smn.status of
Signup.CreatedSuccessfully ->
Nav.replaceUrl model.key "/login"
_ ->
Cmd.none
in
( { model | signupModel = smn }, Cmd.batch [ Cmd.map SignupMessage cmd, redir ] )
CatalogMessage cm ->
let
( cmn, cmd ) =
Catalog.update cm model.catalogModel
in
( { model | catalogModel = cmn }, Cmd.map CatalogMessage cmd )
CartMessage cm ->
let
( cmn, cmd ) =
Cart.update cm model.cartModel
in
( { model | cartModel = cmn }, Cmd.map CartMessage cmd )
CheckoutMessage cm ->
let
( cmn, cmd ) =
Checkout.update cm model.checkoutModel
redir =
case cmn.pageStatus of
Checkout.CheckedOut ->
Nav.replaceUrl model.key "/profile"
_ ->
Cmd.none
_ =
Debug.log "err" "received checkout message ..."
in
( { model | checkoutModel = cmn }, Cmd.batch [ Cmd.map CheckoutMessage cmd, redir ] )
ProfileMessage pm ->
let
( pmn, cmd ) =
Profile.update pm model.profileModel
_ =
Debug.log "err" "recieved profile message"
in
( { model | profileModel = pmn }, Cmd.map ProfileMessage cmd )
ProductMessage pm ->
let
( pmn, cmd ) =
Product.update pm model.productModel
redir =
case pm of
Product.AddToCartSuccess _ ->
Nav.replaceUrl model.key "/cart"
_ ->
Cmd.none
in
( { model | productModel = pmn }, Cmd.batch [ Cmd.map ProductMessage cmd, redir ] )
tryLogout : Cmd Msg
tryLogout =
Http.riskyRequest
{ method = "POST"
, headers = []
, url = "http://127.0.0.1:7878/user/logout"
, body = Http.emptyBody
, expect = Http.expectWhatever LogoutSuccess
, timeout = Nothing
, tracker = Nothing
}
-- SUBSCRIPTIONS
subscriptions : Model -> Sub Msg
subscriptions _ =
Sub.none
-- VIEW
view : Model -> Browser.Document Msg
view model =
case model.location of
HomePage ->
{ title = "Login"
, body =
-- model.loginModel
-- |> Login.view
-- |> Html.Styled.map LoginMessage
-- |> toUnstyled
-- |> List.singleton
div []
[ ul []
(List.map
(\l ->
li []
[ a [ href l ] [ text l ] ]
)
[ "/login", "/catalog", "/cart" ]
)
]
|> toUnstyled
|> List.singleton
}
LoginPage ->
{ title = "Login"
, body =
model.loginModel
|> Login.view
|> Html.Styled.map LoginMessage
|> toUnstyled
|> List.singleton
}
SignupPage ->
{ title = "Signup"
, body =
model.signupModel
|> Signup.view
|> Html.Styled.map SignupMessage
|> toUnstyled
|> List.singleton
}
NotFoundPage ->
{ title = "404 - Not Found"
, body =
div []
[ text "404 - Not Found"
, a [ href "/" ] [ text "Go back >" ]
]
|> toUnstyled
|> List.singleton
}
CatalogPage ->
{ title = "Catalog"
, body =
model.catalogModel
|> Catalog.view
|> Html.Styled.map CatalogMessage
|> pageWrap model
}
CartPage ->
{ title = "Cart"
, body =
model.cartModel
|> Cart.view
|> Html.Styled.map CartMessage
|> pageWrap model
}
CheckoutPage ->
{ title = "Checkout"
, body =
model.checkoutModel
|> Checkout.view
|> Html.Styled.map CheckoutMessage
|> pageWrap model
}
ProfilePage ->
{ title = "Profile"
, body =
model.profileModel
|> Profile.view
|> Html.Styled.map ProfileMessage
|> pageWrap model
}
ProductPage item ->
{ title = "Product " ++ String.fromInt item
, body =
model.productModel
|> Product.view
|> Html.Styled.map ProductMessage
|> pageWrap model
}
viewHeader : Model -> Html Msg
viewHeader model =
let
links =
[ ( "Catalog", "/catalog" )
, ( "Cart", "/cart" )
]
in
div
[ css
[ padding (px 30)
, paddingTop (px 3)
, paddingBottom (px 3)
, textAlign left
, backgroundColor theme.secondary
]
]
[ List.map
(\( name, loc ) ->
li [ css [ display inline ] ]
[ headerLink [ href loc ] [ text name ]
]
)
links
++ (if model.loginModel.loginStatus /= Login.LoggedIn then
[ furbyButton [] [ headerLink [ href "/login" ] [ text "Login" ] ] ]
else
[ headerLink [ href "/profile" ] [ text "Profile" ]
, furbyButton [ onClick LogoutPressed ] [ text "Logout" ]
]
)
|> ul
[ css
[ listStyle Css.none
, padding (px 0)
, margin (px 12)
]
]
]
pageWrap : Model -> Html Msg -> List (Html.Html Msg)
pageWrap model page =
div []
[ viewHeader model
, page
]
|> toUnstyled
|> List.singleton
viewLink : String -> Html msg
viewLink path =
li [] [ a [ href path ] [ text path ] ]
|