#!/usr/bin/env python3

from pathlib import Path
import hashlib
import argparse
import sys

parser = argparse.ArgumentParser(
    description="Confronta i file JS, CSS e HTML della cartella corrente "
                "con un'altra cartella specificata come parametro."
)
parser.add_argument(
    "altra_cartella",
    help="Percorso della cartella da confrontare con quella corrente"
)
args = parser.parse_args()

old = Path(".").resolve()
new = Path(args.altra_cartella).expanduser().resolve()

if not old.is_dir():
    sys.exit(f"ERRORE: cartella corrente non valida: {old}")

if not new.is_dir():
    sys.exit(f"ERRORE: cartella inesistente: {new}")

exts = {".js", ".mjs", ".cjs", ".jsx", ".css", ".html", ".htm"}
excluded = {
    "node_modules", ".git", ".venv", ".venv-clustering",
    "var", "native", "coverage", "dist", "build"
}


def collect(root):
    result = {}

    for p in root.rglob("*"):
        if not p.is_file() or p.suffix.lower() not in exts:
            continue

        rel = p.relative_to(root)

        if any(part in excluded or part.startswith("backup-")
               for part in rel.parts):
            continue

        result[str(rel)] = p

    return result


a = collect(old)
b = collect(new)

added = sorted(b.keys() - a.keys())
removed = sorted(a.keys() - b.keys())
common = sorted(a.keys() & b.keys())

modified = [
    f for f in common
    if hashlib.sha256(a[f].read_bytes()).digest()
       != hashlib.sha256(b[f].read_bytes()).digest()
]

print(f"\nCARTELLA CORRENTE: {old}")
print(f"ALTRA CARTELLA:    {new}")

print(f"\nAGGIUNTI nella cartella corrente: {len(removed)}")
for f in removed:
    print("  +", f)

print(f"\nASSENTI dalla cartella corrente: {len(added)}")
for f in added:
    print("  -", f)

print(f"\nMODIFICATI: {len(modified)}")
for f in modified:
    print("  *", f)

Path("/tmp/s184js-modificati.txt").write_text(
    "\n".join(modified) + ("\n" if modified else ""),
    encoding="utf-8"
)

print("\nElenco dei modificati salvato in /tmp/s184js-modificati.txt")