#sudo apt install libimage-exiftool-perl
from __future__ import print_function
from PIL import Image
import sys
import os

if __name__ == "__main__":
	if len(sys.argv) < 4:
		print ("Usage: {} src_folder dst_folder target_size".format(sys.argv[0]))
		exit(0)

	targetMaxDim = int(sys.argv[3])

	for fina in os.listdir(sys.argv[1]):
		srcImgFina = os.path.join(sys.argv[1], fina)
		img = Image.open(srcImgFina)
		print (fina, img.size)

		finaSplit = os.path.splitext(fina)
		targetSize = img.size
		if targetSize[0] > targetMaxDim:
			ratio = targetMaxDim / targetSize[0]
			targetSize = [int(round(dim * ratio)) for dim in targetSize]
		if targetSize[1] > targetMaxDim:
			ratio = targetMaxDim / targetSize[1]
			targetSize = [int(round(dim * ratio)) for dim in targetSize]

		img = img.resize(targetSize)

		if not os.path.exists(sys.argv[2]):
			os.makedirs(sys.argv[2])

		dstImgFina = os.path.join(sys.argv[2], fina)
		img.save(dstImgFina)

		if finaSplit[1].lower() in [".jpg", ".jpeg"]:
			os.system('exiftool -overwrite_original -TagsFromFile {} "-all:all>all:all" {}'.format(srcImgFina, dstImgFina))