"""cninfo 公告抓取入口。

用法:
    uv run python -m scripts.run_cninfo                          # 抓取今天公告
    uv run python -m scripts.run_cninfo --days 3                # 抓取最近 3 天
    uv run python -m scripts.run_cninfo --max-pages 50          # 最多 50 页
    uv run python -m scripts.run_cninfo --no-save               # 试跑不存盘
"""

from __future__ import annotations

import argparse
import sys
from datetime import date, timedelta
from pathlib import Path

from dotenv import load_dotenv
from loguru import logger

from crawler.cninfo import crawl_announcements


def _setup_logger(level: str) -> None:
    logger.remove()
    logger.add(sys.stderr, level=level,
               format="{time:YYYY-MM-DD HH:mm:ss} | {level} | {name} | {message}")
    log_path = Path("logs") / "cninfo.log"
    log_path.parent.mkdir(parents=True, exist_ok=True)
    logger.add(log_path, level="DEBUG", rotation="10 MB", retention=5, encoding="utf-8")


def main() -> int:
    load_dotenv()
    parser = argparse.ArgumentParser(description="cninfo 巨潮资讯网公告抓取")
    parser.add_argument("--days", type=int, default=0,
                        help="抓取最近 N 天的公告,默认读 CNINFO_DAYS_BACK")
    parser.add_argument("--start", default=None, help="开始日期 YYYY-MM-DD")
    parser.add_argument("--end", default=None, help="结束日期 YYYY-MM-DD")
    parser.add_argument("--max-pages", type=int, default=0, help="最大页数")
    parser.add_argument("--no-save", action="store_true", help="仅抓取不存盘")
    parser.add_argument("--log-level", default="INFO")
    args = parser.parse_args()

    _setup_logger(args.log_level)

    start = args.start
    end = args.end
    if args.days > 0 and not start:
        start = (date.today() - timedelta(days=args.days)).strftime("%Y-%m-%d")
    if not end:
        end = date.today().strftime("%Y-%m-%d")

    results = crawl_announcements(
        start_date=start,
        end_date=end,
        max_pages=args.max_pages or None,
        save=not args.no_save,
    )

    if not results:
        return 1
    logger.info("cninfo 抓取完成: {} 条", len(results))
    return 0


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