module Main (main) where

import Codec.Picture
import Codec.Picture.Extra
import Criterion.Main

main :: IO ()
main = defaultMain
  [ bgroup "scaleBilinear"
    [ baction "512 × 512"   (scaleBilinear 512 512)   "data-examples/lenna.png"
    , baction "256 × 256"   (scaleBilinear 256 256)   "data-examples/lenna.png"
    , baction "1024 × 1024" (scaleBilinear 1024 1024) "data-examples/lenna.png" ]
  , bgroup "crop"
    [ baction "on 256 horizontally" (crop 256 0 256 512) "data-examples/lenna.png"
    , baction "on 265 vertically"   (crop 0 256 512 256) "data-examples/lenna.png" ]
  , bgroup "flipHorizontally"
    [ baction "512 × 512" flipHorizontally "data-examples/lenna.png"
    , baction "100 × 100" flipHorizontally "data-examples/lenna-scaled-down.png"
    ]
  , bgroup "flipVertically"
    [ baction "512 × 512" flipVertically "data-examples/lenna.png"
    , baction "100 × 100" flipVertically "data-examples/lenna-scaled-down.png" ]
  , bgroup "rotateLeft90"
    [ baction "512 × 512" rotateLeft90 "data-examples/lenna.png"
    , baction "100 × 100" rotateLeft90 "data-examples/lenna-scaled-down.png" ]
  , bgroup "rotateRight90"
    [ baction "512 × 512" rotateRight90 "data-examples/lenna.png"
    , baction "100 × 100" rotateRight90 "data-examples/lenna-scaled-down.png" ]
  , bgroup "rotate180"
    [ baction "512 × 512" rotate180 "data-examples/lenna.png"
    , baction "100 × 100" rotate180 "data-examples/lenna-scaled-down.png" ]
  , bgroup "beside"
    [ baction "1024 × 512" beside' "data-examples/lenna.png"
    , baction "200 × 100"  beside' "data-examples/lenna-scaled-down.png" ]
  , bgroup "below"
    [ baction "512 × 1024" below' "data-examples/lenna.png"
    , baction "100 × 200"  below' "data-examples/lenna-scaled-down.png" ]
  ]
  where
    beside' img = beside [img, img]
    below'  img = below  [img, img]

-- | Run a benchmark given function to benchmark and where to get image to
-- pass as an input.

baction
  :: String            -- ^ Name of the benchmark
  -> (Image PixelRGB8 -> Image PixelRGB8) -- ^ Transformation to perform
  -> FilePath          -- ^ Where to get image to start with
  -> Benchmark
baction name f path = env getImg (bench name . nf f)
  where
    getImg = do
      (Right (ImageRGB8 img)) <- readImage path
      return img