from __future__ import annotations

from pathlib import Path

FORMAT_SCORE = {"flac": 100, "alac": 100, "wav": 100, "m4a": 60, "aac": 60, "ogg": 50, "opus": 50, "mp3": 40}

def score(row) -> int:
    value = FORMAT_SCORE.get((row["format"] or "").lower(), 0)
    value += int((row["bitrate"] or 0) * 0.1)
    if row["sample_rate"]:
        value += min(int(row["sample_rate"] / 1000), 20)
    if row["bit_depth"]:
        value += min(int(row["bit_depth"]), 32)
    return value

def is_version_conflict(a, b) -> bool:
    af = set((a["version_flags"] or "").split(","))
    bf = set((b["version_flags"] or "").split(","))
    return bool(af.symmetric_difference(bf))

def choose_winner(rows):
    def key(r):
        path = str(r["file_path"])
        admin = "/admin/" in path or path.endswith("/admin")
        return (-score(r), 0 if admin else 1, r["created_at"], path)
    return min(rows, key=key)