Add cmd line parsing

Main.hs

@@ -1,10 +1,34 @@
-import Network.Wreq
+{-# LANGUAGE RecordWildCards #-}
+
+import Network.Wreq (get, responseBody)
+import System.Console.ArgParser
 import Control.Lens
 import Data.Aeson
 import Json
 
-main = do
-	req <- get "http://namecoin.dns:8088/id/rnhmjoj"
-	case decode (req ^. responseBody) of
-		Just res -> putStrLn $ repr res 0
-		Nothing  -> putStrLn "Error parsing data"
+data Name = Name 
+  { name  :: String
+  , url   :: String
+  , local :: Bool
+  , raw :: Bool
+  } deriving (Show)
+
+parser :: ParserSpec Name
+parser = Name 
+  `parsedBy` reqPos   "name"                           `Descr` "Namecoin name id"
+  `andBy`    optPos   "http://dns.dnschain.net/" "url" `Descr` "Use custom dnschain API url"
+  `andBy`    boolFlag "local"                          `Descr` "Use local namecoind db"
+  `andBy`    boolFlag "raw"                            `Descr` "Print raw JSON data"
+
+main :: IO ()
+main = mkApp parser >>= flip runApp exec
+
+exec :: Name -> IO ()
+exec args@Name{..} = 
+  if local then putStrLn "to do"
+  else do
+	  req <- get (url ++ name)
+	  if raw then print $ req ^. responseBody
+	  else case decode (req ^. responseBody) of
+		  Just res -> putStrLn $ repr res
+		  Nothing  -> putStrLn "Error parsing data"