from pathlib import Path

from am_deduper.db import connect
from am_deduper.exact import exact_dedupe
from am_deduper.scanner import scan


def test_exact_dedupe_creates_hardlink(tmp_path: Path):
    root = tmp_path / "AllMusic"
    (root / "admin").mkdir(parents=True)
    (root / "alice").mkdir(parents=True)
    a = root / "admin" / "song.flac"
    b = root / "alice" / "song.flac"
    data = b"fake flac content" * 10000
    a.write_bytes(data)
    b.write_bytes(data)
    db = root / ".dedupe" / "dedupe.db"
    assert scan(root, db) == 2
    actions = exact_dedupe(db, root)
    assert len(actions) == 1
    assert a.stat().st_ino == b.stat().st_ino
    assert a.read_bytes() == b.read_bytes()