Add parser for Unified addresses

src/ZGoTx.hs

@@ -9,16 +9,17 @@ import qualified Data.Bson as B
 import Data.Char
 import Data.Maybe
 import qualified Data.Text as T
+import qualified Data.Text.Encoding as E
 import qualified Data.UUID as U
 import Data.Void
 import Database.MongoDB
 import GHC.Generics
 import Text.Megaparsec hiding (State)
 import Text.Megaparsec.Char
+import ZcashHaskell.Orchard
 
 -- | Type to model a ZGo transaction
-data ZGoTx =
+data ZGoTx = ZGoTx
-  ZGoTx
   { _id :: Maybe ObjectId
   , address :: T.Text
   , session :: T.Text
@@ -27,8 +28,7 @@ data ZGoTx =
   , amount :: Double
   , txid :: T.Text
   , memo :: T.Text
-    }
+  } deriving (Eq, Show, Generic)
-  deriving (Eq, Show, Generic)
 
 parseZGoTxBson :: B.Document -> Maybe ZGoTx
 parseZGoTxBson d = do
@@ -100,13 +100,11 @@ instance Val ZGoTx where
           ]
 
 -- | Type to represent and parse ZGo memos
-data ZGoMemo =
+data ZGoMemo = ZGoMemo
-  ZGoMemo
   { m_session :: Maybe U.UUID
   , m_address :: Maybe T.Text
   , m_payment :: Bool
-    }
+  } deriving (Eq, Show)
-  deriving (Eq, Show)
 
 data MemoToken
   = Login !U.UUID
@@ -139,6 +137,14 @@ pSaplingAddress = do
     then fail "Failed to parse Sapling address"
     else pure $ Address $ T.pack ("zs" <> a)
 
+pUnifiedAddress :: Parser MemoToken
+pUnifiedAddress = do
+  string "u1"
+  a <- some alphaNumChar
+  if isValidUnifiedAddress (E.encodeUtf8 $ "u1" <> T.pack a)
+    then pure $ Address $ T.pack ("u1" <> a)
+    else fail "Failed to parse Unified Address"
+
 pMsg :: Parser MemoToken
 pMsg = do
   msg <-