"""Execute a UTF-8 SQL file via mysql CLI (avoids Windows pipe encoding loss)."""

from __future__ import annotations

import subprocess
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[2]


def _load_env_password() -> tuple[str, str, str]:
    host, user, password = "127.0.0.1", "root", ""
    env_path = ROOT / ".env"
    if env_path.exists():
        for line in env_path.read_text(encoding="utf-8").splitlines():
            line = line.strip()
            if line.startswith("MYSQL_HOST="):
                host = line.split("=", 1)[1].strip()
            elif line.startswith("MYSQL_USER="):
                user = line.split("=", 1)[1].strip()
            elif line.startswith("MYSQL_PASSWORD="):
                password = line.split("=", 1)[1].strip()
    return host, user, password


def main() -> None:
    if len(sys.argv) != 2:
        raise SystemExit("usage: run_sql_file.py <path.sql>")
    path = Path(sys.argv[1]).resolve()
    if not path.is_file():
        raise SystemExit(f"file not found: {path}")
    host, user, password = _load_env_password()
    if not password:
        raise SystemExit("MYSQL_PASSWORD missing in .env")
    sql = path.read_text(encoding="utf-8")
    proc = subprocess.run(
        ["mysql", "-h", host, "-u", user, f"-p{password}", "--default-character-set=utf8mb4"],
        input=sql.encode("utf-8"),
        capture_output=True,
    )
    if proc.stdout:
        sys.stdout.buffer.write(proc.stdout)
    if proc.returncode != 0:
        if proc.stderr:
            sys.stderr.buffer.write(proc.stderr)
        raise SystemExit(proc.returncode)


if __name__ == "__main__":
    main()