Bootstrapped my haskell client

haskell/src/SpaceTraders/APIClient/Agent.hs

@@ -0,0 +1,34 @@
+{-# LANGUAGE DeriveAnyClass #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module SpaceTraders.APIClient.Agent
+  ( RegisterMessage(..)
+  , myAgent
+  , register
+  ) where
+
+import Data.Aeson
+import GHC.Generics
+import qualified Data.Text as T
+import Network.HTTP.Simple
+
+import SpaceTraders.APIClient.Client
+import SpaceTraders.Model.Agent
+
+myAgent :: T.Text -> IO (Either APIError Agent)
+myAgent t = send $ setRequestPath "/v2/my/agent"
+                 $ tokenReq t
+
+data RegisterRequest = RegisterRequest { symbol :: T.Text
+                                       , faction :: T.Text
+                                       } deriving (ToJSON, Generic, Show)
+data RegisterMessage = RegisterMessage { token :: T.Text
+                                       , agent :: Agent
+                                       } deriving (FromJSON, Generic, Show)
+
+register :: T.Text -> T.Text -> IO (Either APIError RegisterMessage)
+register s f = send $ setRequestPath "/v2/register"
+                    $ setRequestMethod "POST"
+                    $ setRequestBodyJSON RegisterRequest{symbol = s, faction = f}
+                    $ defaultReq

haskell/src/SpaceTraders/APIClient/Client.hs

@@ -0,0 +1,69 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module SpaceTraders.APIClient.Client
+  ( APIError(..)
+  , APIMessage(..)
+  , defaultReq
+  , fromJSONValue
+  , send
+  , tokenReq
+  ) where
+
+import Control.Exception
+import Control.Monad
+import Data.Aeson
+import Data.Aeson.Types
+import qualified Data.Text as T
+import qualified Data.Text.Encoding as T
+import Network.HTTP.Simple
+import Network.HTTP.Types.Status
+
+data APIError = APIError { apiErrorCode :: Int
+                         , apiErrorMessage :: T.Text
+                         } deriving Show
+instance Exception APIError
+instance FromJSON APIError where
+  parseJSON (Object o) = do
+    e <- o .: "error"
+    APIError <$> e .: "code"
+             <*> e .: "message"
+  parseJSON _ = mzero
+
+data APIMessage = APIMessage { data_ :: Value } deriving (Show)
+instance FromJSON APIMessage where
+  parseJSON (Object o) = APIMessage <$> o .: "data"
+  parseJSON _ = mzero
+
+defaultReq :: Request
+defaultReq = setRequestHost "api.spacetraders.io"
+           $ setRequestPort 443
+           $ setRequestSecure True
+           $ setRequestHeader "Content-Type" ["application/json"]
+           $ defaultRequest
+
+tokenReq :: T.Text -> Request
+tokenReq token = setRequestHeader "Authorization" [T.encodeUtf8 $ "Bearer " <> token]
+               $ defaultReq
+
+fromJSONValue :: FromJSON a => Value -> Either String a
+fromJSONValue = parseEither parseJSON
+
+send :: FromJSON a => Request -> IO (Either APIError a)
+send request = do
+  response <- httpLbs request
+  let status = statusCode $ getResponseStatus response
+      body = getResponseBody response
+  if status >= 200 && status <= 299
+    then case eitherDecode body of
+      Left e -> return $ Left APIError{apiErrorCode = -1000, apiErrorMessage = T.pack $ concat ["Error decoding JSON APIMessage: ", e]}
+      Right r -> case fromJSONValue (data_ r) of
+        Left e -> return $ Left APIError{apiErrorCode = -1001, apiErrorMessage = T.pack $ concat ["Error decoding JSON message contents: ", e]}
+        Right m -> return $ Right m
+    else case eitherDecode body of
+      Left e -> return $ Left APIError{apiErrorCode = -status, apiErrorMessage = T.pack $ concat ["Error decoding JSON APIError: ", e, ". Got HTTP body: ", show body]}
+      Right e -> return $ Left e
+
+--handleAPIError :: SomeException -> IO (Maybe RegisterMessage)
+--handleAPIError e = do
+--  print e
+--  return Nothing

haskell/src/SpaceTraders/Database.hs

@@ -0,0 +1,56 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module SpaceTraders.Database
+  ( close
+  , open
+  ) where
+
+import Control.Exception
+import qualified Database.SQLite.Simple as S
+import Text.RawString.QQ
+
+migrations :: [S.Query]
+migrations = [
+  [r|CREATE TABLE schema_version (
+       version INTEGER NOT NULL
+     );
+  |],
+  [r|CREATE TABLE tokens (
+       id INTEGER PRIMARY KEY,
+       data TEXT NOT NULL
+     );
+  |],
+  [r|CREATE TABLE agents (
+       id INTEGER PRIMARY KEY,
+       data TEXT NOT NULL
+     );
+  |],
+  [r|CREATE TABLE contracts (
+       id INTEGER PRIMARY KEY,
+       data TEXT NOT NULL
+     );
+  |]]
+
+close :: S.Connection -> IO ()
+close conn = S.close conn
+
+open :: IO S.Connection
+open = do
+  conn <- S.open "spacetraders.db"
+  S.execute_ conn "PRAGMA foreign_keys = ON;"
+  S.execute_ conn "PRAGMA journal_mode = WAL;"
+  S.withTransaction conn $ do
+    version <- getSchemaVersion conn `catch` defaultVersion
+    mapM_ (S.execute_ conn) $ drop version migrations
+    S.execute_ conn "DELETE FROM schema_version;"
+    S.execute conn "INSERT INTO schema_version (version) VALUES (?);" (S.Only $ length migrations)
+  return conn
+
+getSchemaVersion :: S.Connection -> IO Int
+getSchemaVersion conn = do
+  [[v]] <- S.query_ conn "SELECT version FROM schema_version;"
+  return v
+
+defaultVersion :: SomeException -> IO Int
+defaultVersion _ = return 0

haskell/src/SpaceTraders/Database/Agents.hs

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+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module SpaceTraders.Database.Agents
+  ( setAgent
+  ) where
+
+import Data.Aeson
+import qualified Database.SQLite.Simple as S
+
+import SpaceTraders.Model.Agent
+
+setAgent :: S.Connection -> Agent -> IO ()
+setAgent conn agent = S.execute conn "INSERT INTO agents(data) VALUES (json(?));" (S.Only (encode agent))

haskell/src/SpaceTraders/Database/Tokens.hs

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+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module SpaceTraders.Database.Tokens
+  ( getToken
+  , setToken
+  ) where
+
+import qualified Database.SQLite.Simple as S
+import qualified Data.Text as T
+
+getToken :: S.Connection -> IO (T.Text)
+getToken conn = do
+  [[token]] <- S.query_ conn "SELECT data FROM tokens;"
+  return token
+
+setToken :: S.Connection -> T.Text -> IO ()
+setToken conn value = S.execute conn "INSERT INTO tokens(data) VALUES (?);" (S.Only value)

haskell/src/SpaceTraders/Model/Agent.hs

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+{-# LANGUAGE DeriveAnyClass #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module SpaceTraders.Model.Agent
+  ( Agent(accountId, credits, headquarters)
+  , agentSymbol
+  ) where
+
+import Data.Aeson
+import GHC.Generics
+import qualified Data.Text as T
+
+data Agent = Agent { accountId :: T.Text
+                   , credits :: Integer
+                   , headquarters :: T.Text
+                   , startingFaction :: T.Text
+                   , symbol :: T.Text
+                   } deriving (FromJSON, Generic, Show, ToJSON)
+
+agentSymbol :: Agent -> T.Text
+agentSymbol = symbol