module Main where

import Types
import ComputationM
import Functions

handleRecipeDir :: Token Template -> Token FilePath -> ComputationM ()
handleRecipeDir template dir = do
  dirContents <- listDirectory dir
  imageFilenames <- filterComputationM isImageFilename dirContents
  convertedImageFilenames <- mapComputationM convertedImageFilename imageFilenames
  flip mapComputationM_ (zipTokens imageFilenames convertedImageFilenames) $ \files -> do
    settings <- inject $ ResizeToWidth 800
    convertImage $ tupleTokens files settings

test :: ComputationM ()
test = do
  templateFilename <- inject "template.html"
  template <- readTemplate templateFilename
  dir <- inject "retter"
  dirContents <- listDirectory dir
  mapComputationM_ (handleRecipeDir template) dirContents

main :: IO ()
main = mapM_ print $ evalComputationM test