137 lines
4.5 KiB
Haskell
137 lines
4.5 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DeriveGeneric #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE PolyKinds #-}
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{-# LANGUAGE QuasiQuotes #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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-- {-# LANGUAGE TypeSynonymInstances #-}
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE RecordWildCards #-}
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module Main where
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import Control.Monad
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import Control.Monad.Trans.Either
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import Control.Monad.Trans.Reader
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import Data.Aeson
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import Data.Decimal
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import Data.Monoid
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import Data.Proxy
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import Data.Text
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import GHC.Generics
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import Network.Wai as Wai
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import Network.Wai.Handler.Warp as Warp
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import Safe
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import Servant
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import System.Console.Docopt
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import System.Environment (getArgs)
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import System.IO
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import Text.Printf
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import Hledger.Cli hiding (Reader, version)
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import System.Exit
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version="0.27.98"
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doc :: Docopt
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doc = [docopt|
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hledger-api 0.27.98
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Usage:
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hledger-api [options]
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hledger-api --version
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hledger-api --help
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Options:
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-f --file FILE use a different input file
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-p --port PORT use a different TCP port (default: 8001)
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--version show version
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-h --help show this help
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|]
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main :: IO ()
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main = do
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args <- getArgs >>= parseArgsOrExit doc
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when (isPresent args (longOption "help")) $ exitWithUsage doc
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when (isPresent args (longOption "version")) $ putStrLn version >> exitSuccess
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let defp = "8001"
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p <- case readMay $ getArgWithDefault args defp (longOption "port") of
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Nothing -> exitWithUsage doc
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Just n -> return n
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deff <- defaultJournalPath
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let f = getArgWithDefault args deff (longOption "file")
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requireJournalFileExists f
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readJournalFile Nothing Nothing True f >>= either error' (serveApi f p)
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-- serveApi :: CliOpts -> Journal -> IO ()
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serveApi :: FilePath -> Int -> Journal -> IO ()
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serveApi f p j = do
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-- d <- getCurrentDay
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-- let j' =
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-- filterJournalTransactions (queryFromOpts d $ reportopts_ opts) $
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-- journalApplyAliases (aliasesFromOpts opts) $
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-- j
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printf "Starting web api serving %s on port %d\nPress ctrl-c to quit\n" f p >> hFlush stdout
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Warp.run p $ hledgerApiApp j
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hledgerApiApp :: Journal -> Wai.Application
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hledgerApiApp j = Servant.serve hledgerApi hledgerApiServer
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where
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hledgerApi :: Proxy HledgerApi
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hledgerApi = Proxy
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hledgerApiServer :: Servant.Server HledgerApi
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hledgerApiServer = Servant.enter readerToEither hledgerServerT
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where
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readerToEither :: Reader Journal :~> EitherT ServantErr IO
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readerToEither = Nat $ \r -> return (runReader r j)
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type HledgerApi =
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"accounts" :> Get '[JSON] [AccountName]
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:<|>
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"transactions" :> Get '[JSON] [Transaction]
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hledgerServerT :: ServerT HledgerApi (Reader Journal)
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hledgerServerT =
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accountsH
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:<|>
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transactionsH
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where
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accountsH = journalAccountNames <$> ask
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transactionsH = jtxns <$> ask
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instance ToJSON ClearedStatus where toJSON = genericToJSON defaultOptions -- avoid https://github.com/bos/aeson/issues/290
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instance ToJSON GenericSourcePos where toJSON = genericToJSON defaultOptions
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instance ToJSON Amount where toJSON = genericToJSON defaultOptions
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instance ToJSON AmountStyle where toJSON = genericToJSON defaultOptions
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instance ToJSON Side where toJSON = genericToJSON defaultOptions
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instance ToJSON DigitGroupStyle where toJSON = genericToJSON defaultOptions
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instance ToJSON MixedAmount where toJSON = genericToJSON defaultOptions
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instance ToJSON Price where toJSON = genericToJSON defaultOptions
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instance ToJSON Posting
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where
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toJSON Posting{..} =
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object
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["pdate" .= toJSON pdate
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,"pdate2" .= toJSON pdate2
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,"pstatus" .= toJSON pstatus
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,"paccount" .= toJSON paccount
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,"pamount" .= toJSON pamount
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,"pcomment" .= toJSON pcomment
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,"ptype" .= toJSON ptype
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,"ptags" .= toJSON ptags
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,"pbalanceassertion" .= toJSON pbalanceassertion
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-- just show parent transaction's index
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,"ptransaction" .= toJSON (maybe "" (show.tindex) ptransaction)
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]
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instance ToJSON PostingType where toJSON = genericToJSON defaultOptions
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instance ToJSON Transaction where toJSON = genericToJSON defaultOptions
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instance ToJSON Decimal
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where
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-- toJSON (Decimal decimalPlaces decimalMantissa) =
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-- object ["places" .= decimalPlaces, "mantissa" .= decimalMantissa]
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-- toEncoding = genericToEncoding defaultOptions
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toJSON d = toJSON $ show d
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