from __future__ import annotations

from typing import Optional

from Plugins.WPSAPI import GuideEntry

from .WPSRedPacketBase import WPSRedPacketBase


class WPSRandomRedPacket(WPSRedPacketBase):
    """手气红包入口插件"""

    def get_guide_subtitle(self) -> str:
        return "发起手气红包，随机拆分积分给指定人数"

    def collect_command_entries(self):
        return (
            GuideEntry(
                title="红包",
                identifier="红包 <金额> <人数>",
                description="按照随机手气拆分积分，缺省金额/人数使用配置项。",
                metadata={"别名": "手气红包"},
            ),
        )

    def wake_up(self) -> None:
        self.register_plugin("红包")
        self.register_plugin("手气红包")

    async def callback(self, message: str, chat_id: int, user_id: int) -> Optional[str]:
        payload = self.parse_message_after_at(message).strip()
        tokens = [token.strip() for token in payload.split() if token.strip()]
        service = self.red_packet_service()
        try:
            amount, slots, _ = self.parse_amount_and_slots(tokens)
            self.validate_amount_and_slots(amount, slots)
            self.ensure_sufficient_points(user_id, amount)
            packet = service.create_random_packet(chat_id, user_id, amount, slots)
            hint = f"- 提示：使用 `抢红包 {packet.packet_id}` 抢夺份额。"
            return await self.send_markdown_message(
                self.format_packet_message(packet, hint),
                chat_id,
                user_id,
            )
        except ValueError as exc:
            return await self.send_markdown_message(self.format_error(str(exc)), chat_id, user_id)


__all__ = ["WPSRandomRedPacket"]