{-# LANGUAGE OverloadedStrings #-} -------------------------------------------------------------------------------- module Trips where -------------------------------------------------------------------------------- import Database.SQLite.Simple import Utils import qualified Types as T -------------------------------------------------------------------------------- -- | Create a new `trip` in `dbFile`. create :: FilePath -> T.Trip -> IO () create dbFile trip = withConnection dbFile $ \conn -> execute conn "INSERT INTO Trips (username,destination,startDate,endDate,comment) VALUES (?,?,?,?,?)" (trip |> T.tripFields) -- | Delete a trip from `dbFile` using its `tripPK` Primary Key. delete :: FilePath -> T.TripPK -> IO () delete dbFile tripPK = withConnection dbFile $ \conn -> do execute conn "DELETE FROM Trips WHERE username = ? AND destination = ? and startDate = ?" (tripPK |> T.tripPKFields) -- | Return a list of all of the trips in `dbFile`. listAll :: FilePath -> IO [T.Trip] listAll dbFile = withConnection dbFile $ \conn -> query_ conn "SELECT username,destination,startDate,endDate,comment FROM Trips" -- | Return a list of all of the trips in `dbFile`. list :: FilePath -> T.Username -> IO [T.Trip] list dbFile username = withConnection dbFile $ \conn -> query conn "SELECT username,destination,startDate,endDate,comment FROM Trips WHERE username = ?" (Only username)