import os
import hashlib
import shutil
import json
import fnmatch

def load_config(config_path):
    with open(config_path, 'r', encoding='utf-8') as file:
        return json.load(file)

def calculate_hash(file_path):
    hash_md5 = hashlib.sha256()
    with open(file_path, "rb") as f:
        for chunk in iter(lambda: f.read(4096), b""):
            hash_md5.update(chunk)
    return hash_md5.hexdigest()

def should_ignore(path, ignore_patterns):
    """Check if the given path matches any of the ignore patterns."""
    return any(fnmatch.fnmatch(path, pattern) for pattern in ignore_patterns)

def sync_directories(source, destination, ignore_patterns):
    if not os.path.exists(destination):
        os.makedirs(destination)
    for item in os.listdir(source):
        src_item = os.path.join(source, item)
        dest_item = os.path.join(destination, item)
        # Check if the item matches any ignore pattern
        if should_ignore(item, ignore_patterns):
            continue
        if os.path.isdir(src_item):
            sync_directories(src_item, dest_item, ignore_patterns)
        else:
            print(f'Checking {src_item}...  ', end='')
            if not os.path.exists(dest_item) or calculate_hash(src_item) != calculate_hash(dest_item):
                shutil.copy2(src_item, dest_item)
                print(f'\033[31mCopied!\033[0m')
            else:
                print(f'\033[32mSame!\033[0m')

if __name__ == '__main__':
    config = load_config('config.json')
    sync_directories(config['source_directory'], config['destination_directory'], config['ignore'])