"""使用唯一的本地测试库运行迁移和集成测试，绝不清理原业务库。"""

import os
import argparse
import re
import secrets
import subprocess
import sys
from pathlib import Path


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--reuse-database')
    parser.add_argument('--migration-roundtrip', action='store_true')
    parsed, test_args = parser.parse_known_args()
    if parsed.reuse_database and not re.fullmatch(r'payroll_test_[0-9a-f]{12}', parsed.reuse_database):
        raise SystemExit('只允许复用本运行器创建的隔离测试库')
    root = Path(__file__).resolve().parents[1]
    python = root / "backend/.venv-workbench/Scripts/python.exe"
    if not python.exists():
        python = Path(sys.executable)
    suffix = secrets.token_hex(6)
    database, username = parsed.reuse_database or "payroll_test_" + suffix, "pytest_" + suffix
    password = secrets.token_urlsafe(30)
    sql = ("" if parsed.reuse_database else f"CREATE DATABASE `{database}` CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci; ") + f"CREATE USER '{username}'@'%' IDENTIFIED BY '{password}'; GRANT ALL PRIVILEGES ON `{database}`.* TO '{username}'@'%';"
    setup = subprocess.run(
        ["docker", "exec", "-i", "ys-mysql-dev", "sh", "-c", 'export MYSQL_PWD="$MYSQL_ROOT_PASSWORD"; exec mysql -uroot'],
        input=sql.encode(), capture_output=True,
    )
    if setup.returncode:
        raise SystemExit("隔离库创建失败，未执行迁移或测试")
    env = os.environ | {
        "MYSQL_DATABASE": database, "MYSQL_USER": username, "MYSQL_PASSWORD": password,
        "PAYROLL_TEST_DATABASE": database, "REDIS_DB": "15", "PYTHONIOENCODING": "utf-8",
        "UPLOAD_DIR": str(root / ".ai" / "isolated-uploads" / database),
    }
    print("独立测试库：" + database, flush=True)
    commands = [["-m", "alembic", "upgrade", "head"]]
    if parsed.migration_roundtrip:
        commands += [["-m", "alembic", "downgrade", "07b8c9d0e1f2"], ["-m", "alembic", "upgrade", "head"]]
    args = test_args
    commands.append(["-m", "pytest", *(args or ["tests/integration"]), "-q", "--tb=short"])
    for args in commands:
        result = subprocess.run([str(python), *args], cwd=root / "backend", env=env)
        if result.returncode:
            return result.returncode
    return 0


if __name__ == "__main__":
    raise SystemExit(main())