{-# LANGUAGE DataKinds #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE NoImplicitPrelude #-}

-- | Server
--
-- : exe ibb
--
-- : dep clay
-- : dep miso
-- : dep protolude
-- : dep servant
-- : dep text
-- : dep MonadRandom
-- : dep acid-state
-- : dep bytestring
-- : dep ixset
-- : dep random
-- : dep safecopy
-- : dep scotty
-- : dep servant-server
-- : dep text
module Biz.Ibb.Server where

import Alpha
import Biz.Ibb.Core
import qualified Biz.Ibb.Keep as Keep
import qualified Biz.Ibb.Look as Look
import qualified Clay
import Data.Acid (AcidState)
import qualified Data.Acid.Abstract as Acid
import Data.Maybe (fromMaybe)
import qualified Data.Text.Lazy as Lazy
import qualified Data.Text.Lazy.Encoding as Lazy
import qualified Lucid as L
import Lucid.Base
import Miso
import Network.HTTP.Media
  ( (//),
    (/:),
  )
import Network.HTTP.Types
import Network.RemoteData
import Network.Wai
import Network.Wai.Application.Static
import Network.Wai.Handler.Warp
import Network.Wai.Middleware.Gzip
import Network.Wai.Middleware.RequestLogger
import Servant
import System.Environment (lookupEnv)

main :: IO ()
main = do
  say "rise: ibb"
  staticDir <- fromMaybe "static" <$> lookupEnv "STATIC_DIR" :: IO String
  port <- (read . fromMaybe "3000" <$> lookupEnv "PORT") :: IO Int
  keep <- Keep.openLocal "_keep/"
  say "port: 3000"
  run port $ logStdout $ compress $ app staticDir keep
  where
    compress = gzip def {gzipFiles = GzipCompress}

newtype HtmlPage a = HtmlPage a
  deriving (Show, Eq)

instance L.ToHtml a => L.ToHtml (HtmlPage a) where
  toHtmlRaw = L.toHtml
  toHtml (HtmlPage x) = L.doctypehtml_ $ do
    L.head_ $ do
      L.meta_ [L.charset_ "utf-8"]
      jsRef "/static/ibb.js"
      cssRef "/css/main.css"
    L.body_ page
    where
      page = L.toHtml x
      jsRef href =
        L.with
          (L.script_ mempty)
          [ makeAttribute "src" href,
            makeAttribute "type" "text/javascript",
            makeAttribute "async" mempty,
            makeAttribute "defer" mempty
          ]
      cssRef href =
        L.with
          (L.link_ mempty)
          [L.rel_ "stylesheet", L.type_ "text/css", L.href_ href]

type ServerRoutes = ToServerRoutes AppRoutes HtmlPage Action

handle404 :: Application
handle404 _ respond =
  respond
    $ responseLBS status404 [("Content-Type", "text/html")]
    $ renderBS
    $ toHtml
    $ HtmlPage notfound

newtype CSS
  = CSS
      { unCSS :: Text
      }

instance MimeRender CSS Text where
  mimeRender _ = Lazy.encodeUtf8 . Lazy.fromStrict

instance Accept CSS where
  contentType _ = "text" // "css" /: ("charset", "utf-8")

type CssRoute = "css" :> "main.css" :> Get '[CSS] Text

type Routes =
  "static"
    :> Raw
    :<|> CssRoute
    :<|> ServerRoutes
    :<|> "api"
    :> ApiRoutes
    :<|> Raw

cssHandlers :: Server CssRoute
cssHandlers = return . Lazy.toStrict . Clay.render $ Look.main

app :: String -> AcidState Keep.IbbKeep -> Application
app staticDir keep =
  serve (Proxy @Routes) $
    static
      :<|> cssHandlers
      :<|> serverHandlers
      :<|> apiHandlers keep
      :<|> Tagged handle404
  where
    static = serveDirectoryWith (defaultWebAppSettings staticDir)

type ApiRoutes = "people" :> Get '[JSON] [Person]

serverHandlers :: Server ServerRoutes
serverHandlers = homeHandler
  where
    send f u = pure $ HtmlPage $ f Model {uri = u, people = NotAsked}
    homeHandler = send home goHome

-- | for now we just have one api endpoint, which returns all the people
apiHandlers :: AcidState Keep.IbbKeep -> Server ApiRoutes
apiHandlers keep = Acid.query' keep $ Keep.GetPeople 20