module Main where

import MiniDependency.Order
  ( catalog
  , renderPlan
  , resolveDeploymentOrder
  )
import System.Environment (getArgs)
import System.Exit (die)

main :: IO ()
main = do
  args <- getArgs
  let requestedServices =
        case args of
          [] -> ["frontend", "billing"]
          _ -> args

  case resolveDeploymentOrder catalog requestedServices of
    Left err -> die err
    Right deploymentPlan -> putStrLn (renderPlan deploymentPlan)