import hashlib
import os

def calculate_sha1(file_path):
    sha1 = hashlib.sha1()
    with open(file_path, 'rb') as file:
        while True:
            data = file.read(8192)  # Reading chunks of 8KB
            if not data:
                break
            sha1.update(data)
    return sha1.hexdigest().upper()  # Returning the hash in uppercase

def find_files_and_calculate_sha1():
    current_directory = os.getcwd()
    # Define the tuple of extensions to include in the search
    extensions = ('.odc')
    # Modify the list comprehension to search for files with the new extensions
    files = [f for f in os.listdir(current_directory) if f.endswith(extensions)]
    output_file = "sha1_hashes.txt"

    with open(output_file, 'w') as out_file:
        for counter, file in enumerate(files, start=1):
            file_path = os.path.join(current_directory, file)
            sha1_hash = calculate_sha1(file_path)
            out_file.write(f"{file}\t{sha1_hash}\n")
            print(f"{counter}. Processing: {file}")

    print(f"SHA1 hashes written to {output_file}")

# Calling the updated function
find_files_and_calculate_sha1()