58 lines
1.7 KiB
Haskell
58 lines
1.7 KiB
Haskell
{-# LANGUAGE RecordWildCards, OverloadedStrings #-}
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import Network.Wreq (get, responseBody)
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import Data.Aeson (decode, toJSON)
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import Data.Maybe (fromJust)
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import Data.HashMap.Strict (delete)
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import Control.Monad (when)
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import Control.Lens
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import qualified Data.ByteString.Lazy.Char8 as C
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import System.Console.ArgParser
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import System.Process
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import Json
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data Name = Name
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{ name :: String
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, url :: String
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, local :: Bool
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, block :: Bool
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, raw :: Bool
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} deriving (Show)
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parser :: ParserSpec Name
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parser = Name
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`parsedBy` reqPos "name" `Descr` "Namecoin name id"
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`andBy` optPos "http://dns.dnschain.net/" "url"
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`Descr` "Use custom dnschain API url"
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`andBy` boolFlag "local" `Descr` "Use local namecoind db"
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`andBy` boolFlag "block" `Descr` "Show blockchain data (require local connecton)"
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`andBy` boolFlag "raw" `Descr` "Print raw JSON data"
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main :: IO ()
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main = mkApp parser >>= flip runApp exec
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exec :: Name -> IO ()
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exec args@Name{..} =
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if local
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then do
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out <- readProcess "namecoind" ["name_show", name] ""
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case decode (C.pack out) of
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Just res -> do
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putStrLn (repr value)
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when block $ putStrLn (repr extra)
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where
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value = fromJust . decode . C.pack $ res |: "value"
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extra = toJSON $ delete "value" res
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Nothing -> putStrLn "Error parsing data"
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else do
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req <- get (url ++ name)
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let body = req ^. responseBody
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if raw
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then print body
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else putStrLn $
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case decode body of
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Just res -> repr res
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Nothing -> "Error parsing data"
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