#!/usr/bin/env python3
"""去掉 Clash Premium(Clash for Windows) 不认识的规则类型，保持镜像可被新旧内核共用。"""
import pathlib, re, sys

UNSUPPORTED = ("IP-ASN", "GEOSITE", "IP-SUFFIX", "SRC-IP-SUFFIX", "RULE-SET", "SUB-RULE", "AND", "OR", "NOT")

changed = 0
for f in sorted(pathlib.Path("rules").iterdir()):
    lines = f.read_text(encoding="utf-8").splitlines(True)
    kept = [l for l in lines
            if not any(re.match(rf"\s*-\s*{t},", l) for t in UNSUPPORTED)]
    if len(kept) != len(lines):
        f.write_text("".join(kept), encoding="utf-8")
        print(f"{f.name}: removed {len(lines) - len(kept)} line(s)")
        changed += 1
print(f"files changed: {changed}")