"""CLI：高校人事请假考勤命令分发。"""

from __future__ import annotations

import argparse
import sys
from typing import List, Optional

from service.task_service import (
    cmd_calculate_leave,
    cmd_config_path,
    cmd_health,
    cmd_import_employees,
    cmd_init_db,
    cmd_render_html,
    cmd_run,
    cmd_version,
)
from util.argparse_zh import ZhArgumentParser
from util.config_bootstrap import bootstrap_skill_config
from util.constants import LOG_LOGGER_NAME, SKILL_SLUG
from util.logging_config import get_skill_logger, setup_skill_logging


def _cli_str_or_none(raw: Optional[str]) -> Optional[str]:
    if raw is None:
        return None
    v = str(raw).strip()
    return v or None


def _handle_run(args: argparse.Namespace) -> int:
    tail = [str(x).strip() for x in (args.run_tail or []) if str(x).strip()]
    if len(tail) > 2:
        print("参数过多。")
        print("用法：python main.py run [target [input_id]] | run [-t target] [-i input_id]")
        return 1

    t_target: Optional[str] = None
    t_input: Optional[str] = None
    if len(tail) == 2:
        t_target, t_input = tail[0], tail[1]
    elif len(tail) == 1:
        if tail[0].isdigit():
            t_input = tail[0]
        else:
            t_target = tail[0]

    pick_t = _cli_str_or_none(getattr(args, "target", None))
    pick_i = _cli_str_or_none(getattr(args, "input_id", None))
    target = pick_t or t_target
    input_id = pick_i or t_input
    return cmd_run(target=target, input_id=input_id)


def build_parser() -> ZhArgumentParser:
    p = ZhArgumentParser(
        prog="main.py",
        description="高校人事请假考勤：导入教职工、请假核算、审批与扣薪报告。",
        formatter_class=argparse.RawDescriptionHelpFormatter,
    )
    sub = p.add_subparsers(dest="cmd", required=True, parser_class=ZhArgumentParser)

    sp = sub.add_parser("run", help="兼容入口（需 calculate-leave 子命令）")
    sp.add_argument("--target", "-t", default=None, metavar="教职工id")
    sp.add_argument("--input-id", "-i", default=None, metavar="教职工id", dest="input_id")
    sp.add_argument("run_tail", nargs="*", metavar="位置参数")
    sp.set_defaults(handler=_handle_run)

    sp = sub.add_parser("import-employees", help="从输入目录导入教职工 JSON")
    sp.add_argument("--file", "-f", default=None, metavar="JSON文件")
    sp.set_defaults(handler=lambda a: cmd_import_employees(file_path=a.file))

    sp = sub.add_parser("calculate-leave", help="核算请假扣薪与审批层级")
    sp.add_argument("--employee-id", "-e", required=True, dest="employee_id")
    sp.add_argument("--leave-type", required=True, dest="leave_type")
    sp.add_argument("--start-date", required=True, dest="start_date")
    sp.add_argument("--end-date", required=True, dest="end_date")
    sp.add_argument("--has-certificate", default=None, dest="has_certificate")
    sp.add_argument("--certificate-type", default=None, dest="certificate_type")
    sp.set_defaults(
        handler=lambda a: cmd_calculate_leave(
            employee_id=a.employee_id,
            leave_type=a.leave_type,
            start_date=a.start_date,
            end_date=a.end_date,
            has_certificate=a.has_certificate,
            certificate_type=a.certificate_type,
        )
    )

    sp = sub.add_parser("render-html", help="生成请假审批与扣薪 HTML 报告")
    sp.add_argument("--request-id", "-r", default=None, dest="request_id")
    sp.set_defaults(handler=lambda a: cmd_render_html(request_id=a.request_id))

    sp = sub.add_parser("health", help="健康检查")
    sp.set_defaults(handler=lambda _a: cmd_health())

    sp = sub.add_parser("config-path", help="输出配置与数据路径")
    sp.set_defaults(handler=lambda _a: cmd_config_path())

    sp = sub.add_parser("version", help="版本信息")
    sp.set_defaults(handler=lambda _a: cmd_version())

    sp = sub.add_parser("init-db", help="初始化数据库并同步示例数据")
    sp.set_defaults(handler=lambda _a: cmd_init_db())
    return p


def main(argv: Optional[List[str]] = None) -> int:
    argv = argv if argv is not None else sys.argv[1:]
    bootstrap_skill_config()
    setup_skill_logging(SKILL_SLUG, LOG_LOGGER_NAME)
    get_skill_logger().info("cli_start argv=%s", sys.argv)
    if not argv:
        print(
            "高校人事请假考勤 — 用法：python main.py import-employees | calculate-leave | "
            "render-html | health | version | init-db"
        )
        return 1
    short = {
        "run",
        "import-employees",
        "calculate-leave",
        "render-html",
        "health",
        "config-path",
        "version",
        "init-db",
        "-h",
        "--help",
    }
    if len(argv) == 2 and argv[0] not in short:
        return cmd_run(target=argv[0], input_id=argv[1])
    parser = build_parser()
    args = parser.parse_args(argv)
    return int(args.handler(args))