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{-# LANGUAGE OverloadedStrings #-}
module SpaceTraders.Database.Agents
( addAgent
, getAgent
, setAgent
) where
import Control.Monad.Reader
import Data.Aeson
import Data.Maybe
import qualified Database.SQLite.Simple as S
import SpaceTraders
import SpaceTraders.Model.Agent
import SpaceTraders.Utils
addAgent :: (HasDatabaseConn env, MonadIO m, MonadReader env m) => Agent -> m ()
addAgent agent = do
env <- ask
liftIO $ S.execute (getConn env) "INSERT INTO agents(data) VALUES (json(?));" (S.Only (encode agent))
getAgent :: (HasDatabaseConn env, MonadIO m, MonadReader env m) => m Agent
getAgent = do
env <- ask
ret <- liftIO $ S.query_ (getConn env) "SELECT data FROM agents;"
return . head . catMaybes $ map (decodeText . head) ret
setAgent :: (HasDatabaseConn env, MonadIO m, MonadReader env m) => Agent -> m ()
setAgent agent = do
env <- ask
liftIO $ S.execute (getConn env) "UPDATE agents SET data = json(?);" (S.Only (encode agent))
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