"""server-core 统一入口（dispatcher）—— 对外生产服务 opc.pinesound.cn 单入口。

按「端口专属前缀」把请求分流到对应子应用，每端口自带前缀子路由、互不冲突：
  /park/*                                  → 园区子应用（app.park，大屏/MQTT/园区数据）
  /api/*、/uploads/*、/SpXvScDiDT.txt     → 培训子应用（app.training，独立 data/opc.db）
  /auth /opc /admin /government /investor …→ 平台应用（app.main，身份 + 业务域，各端口子路由）

启动（server-core 目录）：
    uv run uvicorn dispatcher:app --host 0.0.0.0 --port 8090 --reload
"""
from __future__ import annotations

import logging

from app.main import app as core_app
from app.park.app import app as park_app
from app.training.main import app as training_app

logger = logging.getLogger(__name__)

ROUTE_TRAINING_PREFIXES = ("/api", "/uploads", "/oss", "/SpXvScDiDT.txt")
ROUTE_PARK_PREFIX = "/park"

# training_app 特有的端点前缀（旧培训/活动/预约子应用）；除此之外的 /api/* 走 core_app
TRAINING_EXCLUSIVE_PREFIXES = (
    "/api/auth/",
    "/api/tasks/claim-by-code",
    "/api/tasks/my",
    "/api/events",
    "/api/bookings",
    "/api/checkins",
    "/api/tests",
    "/api/policy/",
    "/api/plan/",
    "/api/survey/",
    "/api/ops/",
    "/api/upload",
    "/api/park/",
    "/api/park-admission",
    "/api/health",
    "/api/oss/",
    "/api/plan-logs",
    "/api/policy-logs",
    "/api/survey-logs",
)


def _prefix_app(path: str):
    """按路径前缀匹配目标子应用；未命中返回 None 交由平台应用（app.main）。"""
    # OPC 收款认证/分账/进件接口：pay_router 挂载在平台应用(app.main)，路径 /opc/pay/*
    # 前端统一走 /api 前缀，故 /api/opc/pay/* 需例外路由到平台应用（而非 training 子应用）
    if path.startswith("/api/opc/pay/") or path == "/api/opc/pay":
        return core_app
    if path.startswith(ROUTE_PARK_PREFIX):
        return park_app
    # /api/* 默认走 core_app（新平台功能：通知/信用/大厅/任务等）
    # 只有 training_app 特有的旧端点才走 training_app
    if path.startswith("/api/") or path == "/api":
        for prefix in TRAINING_EXCLUSIVE_PREFIXES:
            if path.startswith(prefix):
                return training_app
        return core_app
    if path.startswith(ROUTE_TRAINING_PREFIXES):
        return training_app
    return None


class Dispatcher:
    """极简 ASGI 分发器：驱动子应用 lifespan（核心库初始化）+ 按路径路由。"""

    def __init__(self, apps: list):
        self._apps = apps

    async def _run_lifespan(self, receive, send):
        """依次进入各子应用 lifespan（核心应用负责建表/种子），按启动/停止消息配对退出。"""
        started: list = []
        try:
            while True:
                message = await receive()
                if message["type"] == "lifespan.startup":
                    for a in self._apps:
                        cm = a.router.lifespan_context(app=a)
                        await cm.__aenter__()
                        started.append(cm)
                    await send({"type": "lifespan.startup.complete"})
                elif message["type"] == "lifespan.shutdown":
                    for cm in reversed(started):
                        await cm.__aexit__(None, None, None)
                    started = []
                    await send({"type": "lifespan.shutdown.complete"})
                    return
        except BaseException:
            for cm in reversed(started):
                try:
                    await cm.__aexit__(None, None, None)
                except Exception:  # noqa: BLE001
                    pass
            raise

    async def __call__(self, scope, receive, send):
        if scope["type"] == "lifespan":
            await self._run_lifespan(receive, send)
            return
        path = scope.get("path", "")
        target = _prefix_app(path) or core_app
        # core_app 的端点不带 /api 前缀（如 /hall/tasks、/credit/overview），
        # 前端统一走 /api 前缀，故路由到 core_app 时需去掉 /api 前缀
        if target is core_app and path.startswith("/api/"):
            scope = dict(scope)
            scope["path"] = path[4:]  # 去掉 "/api"
            if "raw_path" in scope:
                scope["raw_path"] = scope["path"].encode()
        await target(scope, receive, send)


app = Dispatcher([core_app, training_app, park_app])