"""Garden overview and selling plugin."""

from __future__ import annotations

from typing import Optional

from PWF.Convention.Runtime.Architecture import Architecture

from Plugins.WPSBackpackSystem import WPSBackpackSystem
from Plugins.WPSConfigSystem import WPSConfigAPI

from .garden_plugin_base import WPSGardenBase


class WPSGardenView(WPSGardenBase):
    def wake_up(self) -> None:
        super().wake_up()
        self.register_plugin("garden")
        self.register_plugin("菜园")

    async def callback(self, message: str, chat_id: int, user_id: int) -> Optional[str]:
        payload = self.parse_message_after_at(message).strip()
        if not payload:
            return await self._send_overview(chat_id, user_id)

        tokens = [token.strip() for token in payload.split() if token.strip()]
        if tokens and tokens[0] in {"售出", "sell"}:
            return await self._handle_sell(tokens[1:], chat_id, user_id)

        return await self._send_overview(chat_id, user_id)

    async def _send_overview(self, chat_id: int, user_id: int) -> Optional[str]:
        overview = self.format_garden_overview(user_id)
        return await self.send_markdown_message(overview, chat_id, user_id)

    async def _handle_sell(self, args: list[str], chat_id: int, user_id: int) -> Optional[str]:
        if len(args) < 2:
            return await self.send_markdown_message(
                "❌ 指令格式：`菜园 售出 <果实> <数量>`",
                chat_id,
                user_id,
            )
        identifier = args[0]
        try:
            quantity = int(args[1])
        except ValueError:
            return await self.send_markdown_message("❌ 数量必须是整数", chat_id, user_id)
        if quantity <= 0:
            return await self.send_markdown_message("❌ 数量必须大于0", chat_id, user_id)

        crop = self.resolve_fruit_id(identifier)
        if crop is None:
            return await self.send_markdown_message("❌ 未找到对应果实", chat_id, user_id)

        backpack: WPSBackpackSystem = Architecture.Get(WPSBackpackSystem)
        owned = 0
        for item in backpack.get_user_items(user_id):
            if item.item_id == crop.fruit_id:
                owned = item.quantity
                break
        if owned < quantity:
            return await self.send_markdown_message("❌ 果实数量不足", chat_id, user_id)

        total_points, price_per = self.service().sell_fruit(
            user_id=user_id,
            fruit_id=crop.fruit_id,
            quantity=quantity,
        )
        backpack.set_item_quantity(user_id, crop.fruit_id, owned - quantity)

        config_api: WPSConfigAPI = Architecture.Get(WPSConfigAPI)
        new_points = await config_api.adjust_user_points(
            chat_id,
            user_id,
            total_points,
            reason=f"出售 {crop.display_name} 的果实",
        )

        message = (
            "# 🛒 售出成功\n"
            f"- 果实：{crop.display_name} × {quantity}\n"
            f"- 单价：{price_per} 分\n"
            f"- 总计：{total_points} 分\n"
            f"- 当前积分：{new_points}"
        )
        return await self.send_markdown_message(message, chat_id, user_id)


__all__ = ["WPSGardenView"]