{-# LANGUAGE OverloadedStrings #-}

module TokenRefresh where

import Config
import Data.Time.Clock
import Database.MongoDB
import Xero

main :: IO ()
main = do
  putStrLn "Reading config..."
  now <- getCurrentTime
  loadedConfig <- loadZGoConfig "zgo.cfg"
  pipe <- connect $ host (c_dbHost loadedConfig)
  let db = c_dbName loadedConfig
  j <-
    access
      pipe
      master
      db
      (auth (c_dbUser loadedConfig) (c_dbPassword loadedConfig))
  if j
    then putStrLn "Connected to MongoDB!"
    else fail "MongoDB connection failed!"
  credsData <- access pipe master db findXero
  let creds = cast' . Doc =<< credsData
  tokens <- access pipe master db (findExpiringTokens now)
  if not (null tokens)
    then do
      let t = map (cast' . Doc) tokens
      case creds of
        Just c -> mapM_ (refreshToken pipe db c "" "") t
        Nothing -> fail "No credentials"
    else putStrLn "No tokens to refresh1"