elm-pages-v3-beta/examples/pokedex/src/Page/Greet.elm

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module Page.Greet exposing (Data, Model, Msg, page)
import DataSource exposing (DataSource)
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import Dict exposing (Dict)
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import Head
import Head.Seo as Seo
import Html exposing (Html)
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import Html.Attributes as Attr
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import MySession
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import Page exposing (Page, PageWithState, StaticPayload)
import Pages.PageUrl exposing (PageUrl)
import Pages.Url
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import Server.Request as Request exposing (Request)
import Server.Response exposing (Response)
import Session exposing (Session)
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import Shared
import Time
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import View exposing (View)
type alias Model =
{}
type alias Msg =
()
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type alias RouteParams =
{}
page : Page RouteParams Data
page =
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Page.serverRender
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{ head = head
, data = data
}
|> Page.buildNoState { view = view }
data : RouteParams -> Request.Request (DataSource (Server.Response.Response Data))
data routeParams =
Request.oneOf
[ Request.map2 (\a b -> Data a b Nothing)
(Request.expectQueryParam "name")
Request.requestTime
|> Request.map
(\requestData ->
requestData
|> Server.Response.render
|> Server.Response.withHeader
"x-greeting"
("hello there " ++ requestData.username ++ "!")
|> DataSource.succeed
)
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, MySession.withSession
Request.requestTime
(\requestTime session ->
case session of
Ok okSession ->
let
username : String
username =
okSession
|> Dict.get "name"
|> Maybe.withDefault "NONAME"
flashMessage : Maybe String
flashMessage =
okSession
|> Dict.get "message"
in
( Session.noUpdates
, { username = username
, requestTime = requestTime
, flashMessage = flashMessage
}
|> Server.Response.render
|> Server.Response.withHeader
"x-greeting"
("hello " ++ username ++ "!")
)
|> DataSource.succeed
Err error ->
( Session.noUpdates, Server.Response.temporaryRedirect "/login" )
|> DataSource.succeed
)
]
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head :
StaticPayload Data RouteParams
-> List Head.Tag
head static =
Seo.summary
{ canonicalUrlOverride = Nothing
, siteName = "elm-pages"
, image =
{ url = Pages.Url.external "TODO"
, alt = "elm-pages logo"
, dimensions = Nothing
, mimeType = Nothing
}
, description = "TODO"
, locale = Nothing
, title = "TODO title" -- metadata.title -- TODO
}
|> Seo.website
type alias Data =
{ username : String
, requestTime : Time.Posix
, flashMessage : Maybe String
}
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view :
Maybe PageUrl
-> Shared.Model
-> StaticPayload Data RouteParams
-> View Msg
view maybeUrl sharedModel static =
{ title = "Hello!"
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, body =
[ static.data.flashMessage
|> Maybe.map (\message -> flashView (Ok message))
|> Maybe.withDefault (Html.p [] [ Html.text "No flash" ])
, Html.text <| "Hello " ++ static.data.username ++ "!"
, Html.text <| "Requested page at " ++ String.fromInt (Time.posixToMillis static.data.requestTime)
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, Html.div []
[ Html.form
[ Attr.method "post"
, Attr.action "/api/logout"
]
[ Html.button
[ Attr.type_ "submit"
]
[ Html.text "Logout" ]
]
]
]
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}
flashView : Result String String -> Html msg
flashView message =
Html.p
[ Attr.style "background-color" "rgb(163 251 163)"
]
[ Html.text <|
case message of
Ok okMessage ->
okMessage
Err error ->
"Something went wrong: " ++ error
]