"""斗鱼任务执行器：公共基础（由 douyu_runner.py 按功能域拆分）。"""

from __future__ import annotations

import asyncio
import threading
import time
from datetime import datetime, timezone
from typing import Optional

from loguru import logger
from sqlalchemy.orm import Session

from core.douyu import DouyuActivityClient
from core.douyu.proxy_fetcher import ProxyFetcher
from ..models import (
    Account,
    DouyuEsportsGoodsSnapshot,
    DouyuGoodsSnapshot,
    DouyuTask,
    DouyuXpdGoodsSnapshot,
    ProxyConfig as ProxyConfigModel,
)
from .douyu_service import DOUYU_CONFIG_FIELDS, douyu_config_value, ensure_douyu_config, douyu_task_payload

# 支付/到账轮询（手册与充值共用）
DOUYU_PAYMENT_POLL_SECONDS = 600
DOUYU_PAYMENT_POLL_INTERVAL = 5
from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from .douyu_runner import DouyuBatchRunner

class DouyuBatchRunnerCore:
    """斗鱼任务执行器公共基础：批次状态、日志、任务落库与客户端构造。"""
    def __init__(
        self,
        db: Session,
        batch_id: str,
        task_type: str,
        payload: Optional[dict] = None,
        log_queue: Optional[asyncio.Queue] = None,
        loop: Optional[asyncio.AbstractEventLoop] = None,
        concurrency: int = 3,
    ):
        self.db = db
        self.batch_id = batch_id
        self.task_type = task_type
        self.payload = payload or {}
        self.log_queue = log_queue
        self.loop = loop
        self.concurrency = max(1, min(concurrency, 10))
        self._stop = threading.Event()
        self._counter_lock = threading.Lock()
        self._started = 0
        # 代理接入 (配置源 = 代理配置页, 与 CK 检测/虎牙注册同款):
        # 开启后斗鱼任务(精英手册兑换/和平小店/电竞等)出网统一走代理, 应对 IP 频控
        self._proxy_cfg = db.query(ProxyConfigModel).first() if db else None
        self._proxy_fetcher = self._create_proxy_fetcher()
        self._static_proxies = self._resolve_static_proxies()
        if self._static_proxies:
            logger.info(f"[douyu] 任务将走静态代理: {self._static_proxies.get('https', '')}")
        elif self._proxy_fetcher:
            logger.info("[douyu] 任务将按任务从代理 API 取新代理")

    def _create_proxy_fetcher(self) -> ProxyFetcher | None:
        """API 代理模式: 每个任务从代理 API 取 1 个新代理 (与虎牙注册链同款)."""
        cfg = self._proxy_cfg
        if not cfg or not cfg.enabled or not cfg.api_url:
            return None
        wl_platform = getattr(cfg, "whitelist_platform", None) or "xiequ"
        wl_credentials = getattr(cfg, "whitelist_credentials", None)
        if not wl_credentials and getattr(cfg, "whitelist_uid", "") and getattr(cfg, "whitelist_ukey", ""):
            wl_credentials = {"uid": cfg.whitelist_uid, "ukey": cfg.whitelist_ukey}
        return ProxyFetcher(
            api_url=cfg.api_url,
            whitelist_platform=wl_platform,
            whitelist_credentials=wl_credentials if cfg.whitelist_enabled else None,
            stop_event=self._stop,
        )

    def _resolve_static_proxies(self) -> dict[str, str] | None:
        """静态代理模式: 代理配置页手填的 http/https 地址."""
        cfg = self._proxy_cfg
        if not cfg or not cfg.enabled:
            return None
        http, https = (cfg.http or "").strip(), (cfg.https or "").strip()
        if not http and not https:
            return None
        return {"http": http or https, "https": https or http}

    def _proxies_for_task(self) -> dict[str, str] | None:
        """取本任务出网代理: 静态优先; API 模式每任务取新代理, 失败降级直连并告警."""
        if self._static_proxies:
            return self._static_proxies
        if self._proxy_fetcher:
            try:
                proxy_url = self._proxy_fetcher.fetch_new_proxy()
                if proxy_url:
                    return {"http": proxy_url, "https": proxy_url}
                self._push_log("warning", "代理 API 未返回可用代理, 本任务降级直连")
            except Exception as exc:
                self._push_log("warning", f"取代理失败, 本任务降级直连: {exc}")
        return None

    def stop(self):
        self._stop.set()

    def _push_log(self, level: str, message: str):
        if level == "result":
            try:
                douyu_batch_registry.mark_finished(self.batch_id)
            except NameError:
                pass
        if level != "result" and message:
            log_func = getattr(logger, level, logger.info)
            log_func(f"[douyu] {message}")
        if self.log_queue and self.loop:
            asyncio.run_coroutine_threadsafe(
                self.log_queue.put({"level": level, "message": message}),
                self.loop,
            )

    @staticmethod
    def _account_name(account: Account) -> str:
        return account.nickname or account.username or account.uid or f"#{account.id}"

    @staticmethod
    def _to_int(value) -> int | None:
        if value is None:
            return None
        try:
            return int(value)
        except (TypeError, ValueError):
            return None

    @staticmethod
    def _format_wait_time(seconds: int | None) -> str:
        if seconds is None:
            return ""
        seconds = max(0, int(seconds))
        days, rem = divmod(seconds, 86400)
        hours, rem = divmod(rem, 3600)
        minutes, sec = divmod(rem, 60)
        if days:
            return f"{days}天{hours}小时{minutes}分"
        if hours:
            return f"{hours}小时{minutes}分{sec}秒"
        return f"{minutes}分{sec}秒"

    def _push_task_event(self, task: DouyuTask) -> None:
        """向批次 WS 推送任务状态事件（level=task），前端即时更新不依赖轮询。"""
        if not self.log_queue or not self.loop:
            return
        try:
            payload = douyu_task_payload(task)
        except Exception:
            logger.exception("[douyu] 推送任务状态失败: task_id={}", task.id)
            return
        event = {
            "level": "task",
            "message": "",
            "task": payload,
        }
        asyncio.run_coroutine_threadsafe(self.log_queue.put(event), self.loop)

    def _mark_task(
        self,
        db: Session,
        task: DouyuTask,
        status: str,
        message: str,
        result: dict | None = None,
    ) -> None:
        task.status = status
        task.message = message[:512]
        if result is not None:
            task.result = result
        task.finished_at = datetime.now(timezone.utc)
        db.commit()
        self._push_task_event(task)

    def _update_task_progress(
        self,
        db: Session,
        task: DouyuTask,
        status: str,
        message: str,
        result: dict | None = None,
    ) -> None:
        task.status = status
        task.message = message[:512]
        if result is not None:
            task.result = result
        db.commit()
        self._push_task_event(task)

    def _upsert_goods(self, db: Session, goods: list[dict]) -> None:
        now = datetime.now(timezone.utc)
        for raw in goods:
            commodity_id = str(raw.get("commodityId") or raw.get("commodity_id") or "")
            if not commodity_id:
                continue
            row = (
                db.query(DouyuGoodsSnapshot)
                .filter(DouyuGoodsSnapshot.commodity_id == commodity_id)
                .first()
            )
            score = self._to_int(raw.get("score"))
            if row is None:
                row = DouyuGoodsSnapshot(commodity_id=commodity_id)
                db.add(row)
            row.name = str(raw.get("commodityName") or raw.get("name") or "")
            row.score = score
            row.status = str(raw.get("status") or "")
            row.raw = raw
            row.updated_at = now
        db.commit()

    def _upsert_esports_goods(self, db: Session, goods: list[dict]) -> None:
        now = datetime.now(timezone.utc)
        for raw in goods:
            commodity_id = str(raw.get("commodityId") or raw.get("commodity_id") or "")
            if not commodity_id:
                continue
            row = (
                db.query(DouyuEsportsGoodsSnapshot)
                .filter(DouyuEsportsGoodsSnapshot.commodity_id == commodity_id)
                .first()
            )
            if row is None:
                row = DouyuEsportsGoodsSnapshot(commodity_id=commodity_id)
                db.add(row)
            row.name = str(raw.get("commodityName") or raw.get("name") or "")
            row.score = self._to_int(raw.get("score"))
            row.status = str(raw.get("status") or "")
            row.raw = raw
            row.updated_at = now
        db.commit()

    def _upsert_xpd_goods(self, db: Session, goods: list[dict]) -> None:
        """同步和平小店商品快照，移除上一次热门抢购等遗留商品。"""
        now = datetime.now(timezone.utc)
        commodity_ids = {
            str(raw.get("commodity_id") or raw.get("iGoodsId") or "")
            for raw in goods
        }
        commodity_ids.discard("")
        query = db.query(DouyuXpdGoodsSnapshot)
        if commodity_ids:
            query.filter(~DouyuXpdGoodsSnapshot.commodity_id.in_(commodity_ids)).delete(
                synchronize_session=False,
            )
        else:
            query.delete(synchronize_session=False)
        for raw in goods:
            commodity_id = str(raw.get("commodity_id") or raw.get("iGoodsId") or "")
            if not commodity_id:
                continue
            row = (
                db.query(DouyuXpdGoodsSnapshot)
                .filter(DouyuXpdGoodsSnapshot.commodity_id == commodity_id)
                .first()
            )
            if row is None:
                row = DouyuXpdGoodsSnapshot(commodity_id=commodity_id)
                db.add(row)
            row.name = str(raw.get("name") or raw.get("sGoodsName") or "")
            row.price = self._to_int(raw.get("price") or raw.get("iPrice"))
            row.org_price = self._to_int(raw.get("org_price") or raw.get("iOrgPrice"))
            row.category = str(raw.get("category") or raw.get("iCategoryId") or "")
            goods_left = raw.get("goods_left")
            if goods_left is None:
                goods_left = raw.get("iGoodsLeft")
            row.goods_left = self._to_int(goods_left)
            row.raw = raw
            row.updated_at = now
        db.commit()

    def _config_info(self, db: Session) -> dict:
        config = ensure_douyu_config(db)
        return {field: douyu_config_value(field, getattr(config, field, None)) for field in DOUYU_CONFIG_FIELDS}

    def _task_payload(self, task: DouyuTask) -> dict:
        result = task.result if isinstance(task.result, dict) else {}
        payload = result.get("payload") if isinstance(result.get("payload"), dict) else {}
        return {**payload, **self.payload}

    def _client(self, cookie: str) -> DouyuActivityClient:
        """任务 HTTP 客户端: 会话级代理 (覆盖精英手册/和平小店/电竞等全部请求)."""
        return DouyuActivityClient(
            cookie,
            logger=lambda msg: self._push_log("debug", msg),
            proxies=self._proxies_for_task(),
        )

    def _sleep_interruptible(self, seconds: float) -> bool:
        """分段睡眠，任务停止时提前返回；返回 False 表示已被停止。"""
        waited = 0.0
        step = 0.5
        while waited < seconds:
            if self._stop.is_set():
                return False
            time.sleep(min(step, seconds - waited))
            waited += step
        return not self._stop.is_set()


class DouyuBatchRegistry:
    """管理运行中的斗鱼任务批次。"""

    def __init__(self):
        self._batches: dict[str, dict] = {}

    def register(self, batch_id: str, log_queue: asyncio.Queue,
                 loop: asyncio.AbstractEventLoop, runner: DouyuBatchRunner):
        self._batches[batch_id] = {
            "log_queue": log_queue,
            "loop": loop,
            "runner": runner,
            "finished": False,
            "updated_at": time.time(),
        }

    def get(self, batch_id: str):
        return self._batches.get(batch_id)

    def pop(self, batch_id: str):
        return self._batches.pop(batch_id, None)

    def mark_finished(self, batch_id: str):
        if batch_id in self._batches:
            self._batches[batch_id]["finished"] = True
            self._batches[batch_id]["updated_at"] = time.time()

    def active_ids(self) -> set[str]:
        return {
            batch_id
            for batch_id, info in self._batches.items()
            if not info.get("finished")
        }


douyu_batch_registry = DouyuBatchRegistry()