from __future__ import annotations

import re
from pathlib import Path

from .constants import MUSIC_EXTENSIONS, VERSION_MARKERS

try:
    from tinytag import TinyTag
except ImportError:
    TinyTag = None


def read_metadata(path: Path) -> dict:
    data = {"format": path.suffix.lower().lstrip(".")}
    if TinyTag is None:
        return data
    try:
        tag = TinyTag.get(str(path), image=False)
    except Exception:
        return data
    data.update({
        "duration": tag.duration,
        "artist": tag.artist,
        "title": tag.title,
        "album": tag.album,
        "bitrate": int(tag.bitrate) if tag.bitrate else None,
        "sample_rate": int(tag.samplerate) if tag.samplerate else None,
        "bit_depth": int(tag.bitdepth) if tag.bitdepth else None,
    })
    text = " ".join(str(data.get(k) or "") for k in ("title", "album")) + " " + path.name
    data["version_flags"] = [m for m in VERSION_MARKERS if re.search(rf"(?<!\w){re.escape(m)}(?!\w)", text, re.I)]
    return data