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|
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeOperators #-}
module Main where
import Control.Applicative ( (<**>)
, (<|>)
)
import Control.Lens ( (^.)
, (^?)
)
import Control.Monad.IO.Class ( liftIO )
import Data.Aeson ( (.:)
, (.=)
, FromJSON(..)
, ToJSON(..)
, Value(..)
, decode
, encode
, object
)
import qualified Data.Aeson.KeyMap as KM
( KeyMap
, lookup
)
import Data.Aeson.Lens ( AsNumber(..)
, AsValue(..)
, key
)
import qualified Data.ByteString as BS
import qualified Data.ByteString.Lazy.Char8 as BSL
import Data.Either ( fromRight )
import qualified Data.HashMap.Lazy as HM
import Data.List ( find
, isSuffixOf
)
import Data.Maybe ( catMaybes
, fromJust
)
import Data.Proxy ( Proxy(..) )
import qualified Data.Text as T
import Data.Text ( Text )
import qualified Data.Text.Encoding as TE
import Data.Text.IO ( hGetContents )
import Network.Wai.Handler.Warp ( run )
import Network.Wreq ( Response
, get
, responseBody
)
import Options.Applicative ( Parser
, auto
, execParser
, fullDesc
, header
, help
, helper
, info
, long
, metavar
, option
, progDesc
, short
, showDefault
, value
)
import Prelude hiding ( takeWhile )
import Servall.Types
import Servall.WikiParser ( parseWikiTemplates
, wikiFilter
)
import Servant ( (:<|>)(..)
, (:>)
, Application
, Capture
, FromHttpApiData(..)
, Get
, Handler
, JSON
, PlainText
, Server
, serve
)
import System.Process ( CreateProcess(..)
, StdStream(..)
, createProcess
, proc
)
import Text.Pandoc ( ReaderOptions(..)
, WrapOption(..)
, WriterOptions(..)
, def
, readMediaWiki
, runIOorExplode
, writeNative
, writeOrg
)
import Text.Regex.TDFA ( (=~) )
type API = Wikipedia :<|> Ytdl
type Wikipedia
= SearchWikipedia :<|> GetWikiFormat :<|> GetOrgFormat :<|> GetPandocFormat :<|> GetWpSummary :<|> GetInfobox
type Ytdl = YtSearch
-- TODO: fix the problem with plaintext having the wront content-type: text/plain
type SearchWikipedia
= "wikipedia" :> "search" :> Capture "query" Text :> Get '[PlainText] Text
type GetWikiFormat
= "wikipedia" :> "wiki" :> Capture "name" Text :> Get '[JSON] Text
type GetOrgFormat
= "wikipedia" :> "org" :> Capture "name" Text :> Get '[JSON] Text
type GetPandocFormat
= "wikipedia" :> "pandoc" :> Capture "name" Text :> Get '[JSON] Text
type GetWpSummary
= "wikipedia" :> "summary" :> Capture "name" Text :> Get '[JSON] WikiSummary
type GetInfobox
= "wikipedia" :> "infobox" :> Capture "name" Text :> Get '[JSON] (HM.HashMap Text Text)
type YtSearch
= "ytdl" :> "search" :> Capture "query" Text :> Get '[JSON] [Video]
server :: Server API
server =
( searchWikipedia
:<|> getWikiFormat
:<|> getOrgFormat
:<|> getPandocFormat
:<|> getWpSummary
:<|> getInfobox
)
:<|> searchYt
searchWikipedia :: Text -> Handler Text
searchWikipedia query = do
r <- liftIO $ get
("https://en.wikipedia.org/w/api.php?action=query&format=json&list=search&srsearch="
<> (T.unpack query)
)
return $ TE.decodeUtf8 $ BSL.toStrict $ r ^. responseBody
getWikiFormat :: Text -> Handler Text
getWikiFormat name = do
r <- liftIO $ get
("https://en.wikipedia.org/wiki/" <> (T.unpack name) <> "?action=raw")
return $ TE.decodeUtf8 $ BSL.toStrict $ r ^. responseBody
getHtmlFormat :: Text -> Handler Text
getHtmlFormat name = do
r <- liftIO $ get ("https://en.wikipedia.org/wiki/" <> (T.unpack name))
return $ TE.decodeUtf8 $ BSL.toStrict $ r ^. responseBody
getOrgFormat :: Text -> Handler Text
getOrgFormat name = do
wiki <- getWikiFormat name
WikiSummary title _ _ <- getWpSummary name
liftIO
$ runIOorExplode
$ (wikiFilter title <$> readMediaWiki def wiki)
>>= writeOrg def { writerWrapText = WrapNone }
getPandocFormat :: Text -> Handler Text
getPandocFormat name = do
wiki <- getWikiFormat name
liftIO $ runIOorExplode $ readMediaWiki def wiki >>= writeNative def
{ writerWrapText = WrapNone
}
getWpSummary :: Text -> Handler WikiSummary
getWpSummary name = fmap (fromJust . decode) (liftIO $ getApiWpSummary name)
getApiWpSummary :: Text -> IO BSL.ByteString
getApiWpSummary name = (^. responseBody) <$> get
("https://en.wikipedia.org/api/rest_v1/page/summary/" <> (T.unpack name))
getWpSummaryFull :: Text -> Handler Text
getWpSummaryFull name =
fmap (TE.decodeUtf8 . BSL.toStrict) (liftIO $ getApiWpSummary name)
getInfobox :: Text -> Handler (HM.HashMap Text Text)
getInfobox name = do
wiki <- getWikiFormat name
return $ maybe
HM.empty
wtFields
(find (\(WikiTemplate name _) -> name == "Infobox")
(fromRight [] (parseWikiTemplates wiki))
)
searchYt :: Text -> Handler [Video]
searchYt query = do
(_, Just hout, _, _) <- liftIO $ createProcess
(proc "yt-dlp" ["-j", "ytsearch10:" <> T.unpack query])
{ std_out = CreatePipe
}
liftIO $ (catMaybes . map decode . BSL.lines) <$> BSL.hGetContents hout
app :: Application
app = serve api server
api :: Proxy API
api = Proxy
main :: IO ()
main = do
config <- execParser opts
run (configPort config) app
where
opts = info
(optParser <**> helper)
(fullDesc <> progDesc "Servall everything server" <> header
"servall - an everything server."
)
optParser :: Parser ServerConfig
optParser = ServerConfig <$> option
auto
( long "port"
<> short 'p'
<> metavar "PORT"
<> value 5555
<> showDefault
<> help "Port to run the server at."
)
data ServerConfig = ServerConfig
{ configPort :: Int
}
|
