80 lines
2.0 KiB
Plaintext
80 lines
2.0 KiB
Plaintext
module App.BlogEntry where
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import Control.Monad.Aff (attempt)
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import DOM (DOM)
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import Data.Argonaut (class DecodeJson, decodeJson, (.?))
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import Data.Either (Either(..), either)
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import Data.Maybe (Maybe(..))
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import Network.HTTP.Affjax (AJAX, get)
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import Prelude (bind, pure, show, ($), (<>), (<<<))
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import Pux (EffModel, noEffects)
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import Pux.Html (Html, div, h1, h2, p, text)
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import Pux.Html.Attributes (id_)
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data Action = RequestPost
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| ReceivePost (Either String Post)
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| RenderPost
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type State =
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{ status :: String
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, hack :: String
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, id :: Maybe Int
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, post :: Post
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, name :: String }
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data Post = Post
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{ title :: String
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, body :: String
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, date :: String }
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instance decodeJsonPost :: DecodeJson Post where
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decodeJson json = do
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obj <- decodeJson json
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title <- obj .? "title"
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body <- obj .? "body"
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date <- obj .? "date"
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pure $ Post { title: title, body: body, date: date }
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init :: State
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init =
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{ status: "Loading..."
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, hack: ""
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, post: Post
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{ title: ""
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, body: ""
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, date: "" }
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, name: ""
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, id: Nothing }
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update :: Action -> State -> EffModel State Action (ajax :: AJAX, dom :: DOM)
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update (ReceivePost (Left err)) state =
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noEffects $ state { id = Nothing, status = err }
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update (ReceivePost (Right post)) state =
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{ state: state { status = "", id = Just 1, post = post }
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, effects: [ pure $ RenderPost ]
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}
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update RequestPost state =
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{ state: state
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, effects: [ do
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res <- attempt $ get ("/api/blog/post?name=" <> state.name)
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let decode r = decodeJson r.response :: Either String Post
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let post = either (Left <<< show) decode res
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pure $ ReceivePost post
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]
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}
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update RenderPost state =
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noEffects $ state { hack = mdify "blogpost" }
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view :: State -> Html Action
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view { id: id, status: status, post: (Post post) } =
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case id of
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Nothing -> div [] []
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(Just _) ->
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div []
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[ h1 [] [ text status ]
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, div []
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[ p [ id_ "blogpost" ] [ text post.body ] ]
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]
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foreign import mdify :: String -> String
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