from __future__ import annotations

import argparse
from pathlib import Path

from .exact import exact_dedupe
from .scanner import scan
from .watcher import watch


def main() -> None:
    p = argparse.ArgumentParser(prog="am-deduper")
    sub = p.add_subparsers(dest="cmd", required=True)
    for name in ("scan", "dedupe", "reconcile", "watch"):
        sp = sub.add_parser(name)
        sp.add_argument("root", type=Path)
        sp.add_argument("--db", type=Path, default=None)
    args = p.parse_args()
    db = args.db or (args.root / ".dedupe" / "dedupe.db")
    if args.cmd == "watch":
        watch(args.root, db)
        return
    if args.cmd in {"scan", "reconcile"}:
        print(f"indexed={scan(args.root, db)} db={db}")
    if args.cmd == "dedupe":
        scan(args.root, db)
        actions = exact_dedupe(db, args.root)
        print(f"hardlinked={len(actions)}")