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-rw-r--r--haskell/src/SpaceTraders/Model/Contract.hs60
1 files changed, 60 insertions, 0 deletions
diff --git a/haskell/src/SpaceTraders/Model/Contract.hs b/haskell/src/SpaceTraders/Model/Contract.hs
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+++ b/haskell/src/SpaceTraders/Model/Contract.hs
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+{-# LANGUAGE DeriveAnyClass #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module SpaceTraders.Model.Contract
+ ( Contract(..)
+ , Delivery(..)
+ , Payment(..)
+ , Terms(..)
+ ) where
+
+import Control.Monad
+import Data.Aeson
+import Data.Time
+import GHC.Generics
+import qualified Data.Text as T
+
+data Contract = Contract { accepted :: Bool
+ , contractId :: T.Text
+ , contractType :: T.Text
+ , expiration :: UTCTime
+ , deadlineToAccept :: UTCTime
+ , factionSymbol :: T.Text
+ , fulfilled :: Bool
+ , terms :: Terms
+ } deriving (Generic, Show)
+instance FromJSON Contract where
+ parseJSON (Object o) = Contract <$> o .: "accepted"
+ <*> o .: "id"
+ <*> o .: "type"
+ <*> o .: "expiration"
+ <*> o .: "deadlineToAccept"
+ <*> o .: "factionSymbol"
+ <*> o .: "fulfilled"
+ <*> o .: "terms"
+ parseJSON _ = mzero
+instance ToJSON Contract where
+ toEncoding (Contract a i ty e d fa fu te) = pairs ( "accepted" .= a
+ <> "id" .= i
+ <> "type" .= ty
+ <> "expiration" .= e
+ <> "deadlineToAccept" .= d
+ <> "factionSymbol" .= fa
+ <> "fulfilled" .= fu
+ <> "terms" .= te )
+
+data Delivery = Delivery { destinationSymbol :: T.Text
+ , tradeSymbol :: T.Text
+ , unitsFulfilled :: Int
+ , unitsRequired :: Int
+ } deriving (FromJSON, Generic, Show, ToJSON)
+
+data Payment = Payment { onAccepted :: Int
+ , onFulfilled :: Int
+ } deriving (FromJSON, Generic, Show, ToJSON)
+
+data Terms = Terms { deadline :: UTCTime
+ , deliver :: [Delivery]
+ , payment :: Payment
+ } deriving (FromJSON, Generic, Show, ToJSON)