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spacetraders/haskell/src/SpaceTraders/Database/Contracts.hs

24 lines
942 B
Haskell

{-# LANGUAGE OverloadedStrings #-}
module SpaceTraders.Database.Contracts
( getContracts
, setContract
) where
import Control.Monad.Error.Class
import Control.Monad.Reader
import Data.Aeson
import qualified Database.SQLite.Simple as S
import SpaceTraders
import SpaceTraders.Model.Contract
import SpaceTraders.Utils
getContracts :: (HasDatabaseConn env, MonadIO m, MonadReader env m) => m [Contract]
getContracts = query_ "SELECT data FROM contracts;"
setContract :: (HasDatabaseConn env, MonadError e m, MonadIO m, MonadReader env m) => Contract -> m ()
setContract contract = updateContract `catchError` addContract
where
addContract _ = execute "INSERT INTO contracts(data) VALUES (json(?));" (S.Only (encode contract))
updateContract = execute "UPDATE contracts SET data = json(?) WHERE data->>'contractId' = ?;" (encode contract, contractId contract)