import re
import sys
import hashlib
from pathlib import Path

def clean_string(s):
    """Remove 'http://' and ':10010' from a string."""
    return s.replace('http://', '').replace(':10010', '')

def extract_value(pattern, content):
    match = re.search(pattern, content, re.IGNORECASE | re.DOTALL)
    return match.group(1) if match else ""

def calculate_sha1(file_path):
    """Calculate SHA1 hash of a file and return uppercase hex digest."""
    try:
        sha1 = hashlib.sha1()
        with open(file_path, 'rb') as f:
            while chunk := f.read(65536):
                sha1.update(chunk)
        return sha1.hexdigest().upper()
    except Exception as e:
        print(f"Error calculating SHA1 for {file_path}: {e}", file=sys.stderr)
        return "ERROR"

def main():
    base_dir = Path.cwd()
    xml_dir = base_dir / "XML"
    log_path = base_dir / "log_VERSXMLS.txt"

    if log_path.exists():
        log_path.unlink()

    counter = 0
    xml_files = list(xml_dir.rglob("*.XML"))

    with log_path.open("w", encoding="utf-8") as log:
        # Add header
        log.write("CDNPATH\tSCENEVERS\tCHECKVER\tSHA1\n")
        for xml_path in xml_files:
            counter += 1
            try:
                content = xml_path.read_text(encoding="utf-8")
            except Exception as e:
                print(f"Error reading {xml_path}: {e}")
                continue

            cdnpath = clean_string(extract_value(r'urlName="(.*?)"', content))
            scenevers = clean_string(extract_value(r'<SCENE version="(.*?)"', content))
            checkver = clean_string(extract_value(r'<CHECKFILE version="(.*?)"', content))
            sha1_hash = calculate_sha1(xml_path)

            log.write(f"{cdnpath}\t{scenevers}\t{checkver}\t{sha1_hash}\n")
            print(f"{counter} LOGGED {xml_path.name}")

if __name__ == "__main__":
    main()