From 7bd1c116c26d0c2147aa787b04f6e7de85d44133 Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Tue, 11 Jul 2023 21:55:55 +0200
Subject: [haskell] Implemented pagination and systems list api call

---
 haskell/src/SpaceTraders/Database/Systems.hs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 haskell/src/SpaceTraders/Database/Systems.hs

(limited to 'haskell/src/SpaceTraders/Database/Systems.hs')

diff --git a/haskell/src/SpaceTraders/Database/Systems.hs b/haskell/src/SpaceTraders/Database/Systems.hs
new file mode 100644
index 0000000..5312fd0
--- /dev/null
+++ b/haskell/src/SpaceTraders/Database/Systems.hs
@@ -0,0 +1,23 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module SpaceTraders.Database.Systems
+  ( addSystems
+  , getSystems
+  ) where
+
+import Data.Aeson
+import Data.Maybe
+import qualified Database.SQLite.Simple as S
+
+import Data.Text.Encoding (encodeUtf8Builder)
+import Data.ByteString.Builder(toLazyByteString)
+
+import SpaceTraders.Model.System
+
+addSystems :: S.Connection -> [System] -> IO ()
+addSystems conn systems = S.withTransaction conn $ S.executeMany conn "INSERT INTO systems(data) VALUES (json(?));" $ S.Only <$> map encode systems
+
+getSystems :: S.Connection -> IO [System]
+getSystems conn = do
+  ret <- S.query_ conn "SELECT data from systems;"
+  return . catMaybes $ map (decode . toLazyByteString . encodeUtf8Builder . head) ret
-- 
cgit v1.2.3