62 lines
1.6 KiB
Haskell
62 lines
1.6 KiB
Haskell
{-# LANGUAGE QuasiQuotes #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DerivingStrategies #-}
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{-# LANGUAGE DerivingVia #-}
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{-# LANGUAGE StandaloneDeriving #-}
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{-# LANGUAGE DeriveGeneric #-}
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module Main where
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import Data.Text (Text(..))
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import Data.Aeson
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import qualified MyLib (someFunc)
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import Database.SQLite.Simple
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import Database.SQLite.Simple.FromRow (FromRow)
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import Database.SQLite.Simple.FromField (fromField)
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import Database.SQLite.Simple.QQ
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import Network.Wai
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import Network.Wai.Handler.Warp
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import Deriving.Aeson
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import Data.Proxy
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import Servant
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import Control.Monad.IO.Class
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data Quote = Quote { qQuote :: Text
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, qAuthor :: Text
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, qBook :: Text
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} deriving (Show, Eq, Ord, Generic)
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deriving (FromJSON,ToJSON)
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via CustomJSON '[OmitNothingFields, FieldLabelModifier '[StripPrefix "q", CamelToSnake]] Quote
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instance FromRow Quote where
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fromRow = Quote <$> field <*> field <*> field
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main :: IO ()
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main = do
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putStrLn "Hello, Haskell!"
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let dbfile = "quotes.db"
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initDb dbfile
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runApp dbfile
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type API = Get '[JSON] [Quote]
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api :: Proxy API
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api = Proxy
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initDb :: FilePath -> IO ()
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initDb dbFile = withConnection dbFile $ \conn ->
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execute_ conn
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[sql|CREATE TABLE IF NOT EXISTS quotes (quote text non null, author text, book text)|]
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server :: FilePath -> Server API
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server dbf = listQuotes dbf
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listQuotes :: FilePath -> Handler [Quote]
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listQuotes db = liftIO $ withConnection db $ \conn -> query_ conn [sql|SELECT * FROM quotes;|]
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runApp :: FilePath -> IO ()
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runApp dbfile = run 8081 (serve api $ server dbfile)
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