#!/usr/bin/env python3
# -*- encoding: utf-8 -*-

import json
from pathlib import Path
import reddit_imgs.fetch


def main():
    if not Path("i_c.json").exists():
        print("Executing prerrequisite...")
        reddit_imgs.fetch.main()
    posts = json.loads(Path('i_c.json').read_text())

    cached_hash_file = Path('i_c_h.json')
    if not cached_hash_file.exists():
        cached_hash_file.write_text('{}')
    cached_hash = json.loads(cached_hash_file.read_text())

    imageFiles = [
        download['file']
        for post in posts
        for download in post['downloaded']]
    imageFilesSize = len(imageFiles)
    for seq, imageFile in enumerate(imageFiles):
        if imageFile not in cached_hash:
            print(f"Handling post {seq+1} of {imageFilesSize}... ")
            cached_hash[imageFile] = Path(imageFile+'.sha256').read_text()

    cached_hash_file.write_text(json.dumps(cached_hash, indent=1))


if __name__ == "__main__":
    main()