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{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE NoImplicitPrelude #-}
-- | General utils for apps
module Biz.App
( CSS (..),
HasCss (..),
Manifest (..),
Html (..),
)
where
import Alpha
import qualified Clay
import Data.Aeson (ToJSON)
import qualified Data.Text.Lazy as Lazy
import qualified Data.Text.Lazy.Encoding as Lazy
import Network.HTTP.Media
( (//),
(/:),
)
import Servant.API (Accept (..), MimeRender (..))
newtype CSS = CSS
{ unCSS :: Text
}
instance Accept CSS where
contentType _ = "text" // "css" /: ("charset", "utf-8")
instance MimeRender CSS Text where
mimeRender _ = Lazy.encodeUtf8 <. Lazy.fromStrict
-- | The manifest describes your app for web app thumbnails, iPhone tiles, etc.
data Manifest = Manifest
{ name :: Text,
short_name :: Text,
start_url :: Text,
display :: Text,
theme_color :: Text,
description :: Text
}
deriving (Show, Eq, Generic)
instance ToJSON Manifest
-- | A wrapper for an HTML page. You need to provide an orphan
-- 'Lucid.Base.ToHtml' instance in the Host module of your app.
--
-- Ideally this would be captured in a Biz.App type, with overrides for head
-- elements, and we would wouldn't have to make the same basic orphan instance
-- for each app.
newtype Html a = Html a
deriving (Show, Eq)
-- | Class for attaching some CSS to a page specifically.
class HasCss a where
cssFor :: a -> Clay.Css
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