import math
import anyio
import random
import aiohttp
import asyncio
from PIL import Image
from datetime import datetime
from pydantic import BaseModel, Extra
from asyncio.exceptions import TimeoutError
from typing import Dict, List, Optional, TypeVar, Generic, Tuple
from nonebot.adapters.onebot.v11 import Message, MessageSegment
from nonebot.log import logger

from configs.path_config import DATA_PATH
from utils.message_builder import image

try:
    import ujson as json
except ModuleNotFoundError:
    import json

from utils.image_utils import BuildImage
from ..config import DRAW_PATH, draw_config
from ..util import cn2py, circled_number


class BaseData(BaseModel, extra=Extra.ignore):
    name: str  # 名字
    star: int  # 星级
    limited: bool  # 限定

    def __eq__(self, other: "BaseData"):
        return self.name == other.name

    def __hash__(self):
        return hash(self.name)

    @property
    def star_str(self) -> str:
        return "".join(["★" for _ in range(self.star)])


class UpChar(BaseData):
    zoom: float  # up提升倍率


class UpEvent(BaseModel):
    title: str  # up池标题
    pool_img: str  # up池封面
    start_time: Optional[datetime]  # 开始时间
    end_time: Optional[datetime]  # 结束时间
    up_char: List[UpChar]  # up对象


TC = TypeVar("TC", bound="BaseData")


class BaseHandle(Generic[TC]):
    def __init__(self, game_name: str, game_name_cn: str):
        self.game_name = game_name
        self.game_name_cn = game_name_cn
        self.max_star = 1  # 最大星级
        self.game_card_color: str = "#ffffff"
        self.data_path = DATA_PATH / "draw_card"
        self.img_path = DRAW_PATH / f"{self.game_name}"
        self.up_path = DATA_PATH / "draw_card" / "draw_card_up"
        self.img_path.mkdir(parents=True, exist_ok=True)
        self.up_path.mkdir(parents=True, exist_ok=True)
        self.data_files: List[str] = [f"{self.game_name}.json"]

    def draw(self, count: int, **kwargs) -> Message:
        index2card = self.get_cards(count, **kwargs)
        cards = [card[0] for card in index2card]
        result = self.format_result(index2card)
        return image(b64=self.generate_img(cards).pic2bs4()) + result

    # 抽取卡池
    def get_card(self, **kwargs) -> TC:
        raise NotImplementedError

    def get_cards(self, count: int, **kwargs) -> List[Tuple[TC, int]]:
        return [(self.get_card(**kwargs), i) for i in range(count)]

    # 获取星级
    @staticmethod
    def get_star(star_list: List[int], probability_list: List[float]) -> int:
        return random.choices(star_list, weights=probability_list, k=1)[0]

    def format_result(self, index2card: List[Tuple[TC, int]], **kwargs) -> str:
        card_list = [card[0] for card in index2card]
        results = [
            self.format_star_result(card_list, **kwargs),
            self.format_max_star(index2card, **kwargs),
            self.format_max_card(card_list, **kwargs),
        ]
        results = [rst for rst in results if rst]
        return "\n".join(results)

    def format_star_result(self, card_list: List[TC], **kwargs) -> str:
        star_dict: Dict[str, int] = {}  # 记录星级及其次数

        card_list_sorted = sorted(card_list, key=lambda c: c.star, reverse=True)
        for card in card_list_sorted:
            try:
                star_dict[card.star_str] += 1
            except KeyError:
                star_dict[card.star_str] = 1

        rst = ""
        for star_str, count in star_dict.items():
            rst += f"[{star_str}×{count}] "
        return rst.strip()

    def format_max_star(
        self, card_list: List[Tuple[TC, int]], up_list: List[str] = [], **kwargs
    ) -> str:
        up_list = up_list or kwargs.get("up_list", [])
        rst = ""
        for card, index in card_list:
            if card.star == self.max_star:
                if card.name in up_list:
                    rst += f"第 {index} 抽获取UP {card.name}\n"
                else:
                    rst += f"第 {index} 抽获取 {card.name}\n"
        return rst.strip()

    def format_max_card(self, card_list: List[TC], **kwargs) -> str:
        card_dict: Dict[TC, int] = {}  # 记录卡牌抽取次数

        for card in card_list:
            try:
                card_dict[card] += 1
            except KeyError:
                card_dict[card] = 1

        max_count = max(card_dict.values())
        max_card = list(card_dict.keys())[list(card_dict.values()).index(max_count)]
        if max_count <= 1:
            return ""
        return f"抽取到最多的是{max_card.name}，共抽取了{max_count}次"

    def generate_img(
        self,
        cards: List[TC],
        num_per_line: int = 5,
        max_per_line: Tuple[int, int] = (40, 10),
    ) -> BuildImage:
        """
        生成统计图片
        :param cards: 卡牌列表
        :param num_per_line: 单行角色显示数量
        :param max_per_line: 当card_list超过一定数值时，更改单行数量
        """
        if len(cards) > max_per_line[0]:
            num_per_line = max_per_line[1]
        if len(cards) > 90:
            card_dict: Dict[TC, int] = {}  # 记录卡牌抽取次数
            for card in cards:
                try:
                    card_dict[card] += 1
                except KeyError:
                    card_dict[card] = 1
            card_list = list(card_dict)
            num_list = list(card_dict.values())
        else:
            card_list = cards
            num_list = [1] * len(cards)

        card_imgs: List[BuildImage] = []
        for card, num in zip(card_list, num_list):
            card_img = self.generate_card_img(card)
            # 数量 > 1 时加数字上标
            if num > 1:
                label = circled_number(num)
                label_w = int(min(card_img.w, card_img.h) / 7)
                label = label.resize(
                    (
                        int(label_w * label.width / label.height),
                        label_w,
                    ),
                    Image.ANTIALIAS,
                )
                card_img.paste(label, alpha=True)

            card_imgs.append(card_img)

        img_w = card_imgs[0].w
        img_h = card_imgs[0].h
        if len(card_imgs) < num_per_line:
            w = img_w * len(card_imgs)
        else:
            w = img_w * num_per_line
        h = img_h * math.ceil(len(card_imgs) / num_per_line)
        img = BuildImage(w, h, img_w, img_h, color=self.game_card_color)
        for card_img in card_imgs:
            img.paste(card_img)
        return img

    def generate_card_img(self, card: TC) -> BuildImage:
        img = str(self.img_path / f"{cn2py(card.name)}.png")
        return BuildImage(100, 100, background=img)

    def load_data(self, filename: str = "") -> dict:
        if not filename:
            filename = f"{self.game_name}.json"
        filepath = self.data_path / filename
        if not filepath.exists():
            return {}
        with filepath.open("r", encoding="utf8") as f:
            return json.load(f)

    def dump_data(self, data: dict, filename: str = ""):
        if not filename:
            filename = f"{self.game_name}.json"
        filepath = self.data_path / filename
        with filepath.open("w", encoding="utf8") as f:
            json.dump(data, f, ensure_ascii=False, indent=4)

    def data_exists(self) -> bool:
        for file in self.data_files:
            if not (self.data_path / file).exists():
                return False
        return True

    def _init_data(self):
        raise NotImplementedError

    def init_data(self):
        try:
            self._init_data()
        except Exception as e:
            logger.warning(f"{self.game_name_cn} 导入角色数据错误：{type(e)}：{e}")

    async def _update_info(self):
        raise NotImplementedError

    def client(self) -> aiohttp.ClientSession:
        headers = {
            "User-Agent": '"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; TencentTraveler 4.0)"'
        }
        return aiohttp.ClientSession(headers=headers)

    async def update_info(self):
        try:
            async with asyncio.Semaphore(draw_config.SEMAPHORE):
                async with self.client() as session:
                    self.session = session
                    await self._update_info()
        except Exception as e:
            logger.warning(f"{self.game_name_cn} 更新数据错误：{type(e)}：{e}")
        self.init_data()

    async def get_url(self, url: str) -> str:
        result = ""
        retry = 5
        for i in range(retry):
            try:
                async with self.session.get(url, timeout=10) as response:
                    result = await response.text()
                break
            except TimeoutError:
                logger.warning(f"访问 {url} 超时, 重试 {i + 1}/{retry}")
                await asyncio.sleep(1)
        return result

    async def download_img(self, url: str, name: str) -> bool:
        img_path = self.img_path / f"{cn2py(name)}.png"
        if img_path.exists():
            return True
        try:
            async with self.session.get(url, timeout=10) as response:
                async with await anyio.open_file(img_path, "wb") as f:
                    await f.write(await response.read())
            return True
        except TimeoutError:
            logger.warning(f"下载 {self.game_name_cn} 图片超时，名称：{name}，url：{url}")
            return False
        except:
            logger.warning(f"下载 {self.game_name_cn} 链接错误，名称：{name}，url：{url}")
            return False

    async def _reload_pool(self) -> Optional[Message]:
        return None

    async def reload_pool(self) -> Optional[Message]:
        try:
            async with self.client() as session:
                self.session = session
                return await self._reload_pool()
        except Exception as e:
            logger.warning(f"{self.game_name_cn} 重载UP池错误：{type(e)}：{e}")

    def reset_count(self, user_id: int) -> bool:
        return False