"""短信登录集成（T11，FR-ACC-04/14）—— 真实 PostgreSQL + Redis，SMS_PROVIDER=fake。

测试钩子：sender 经 ``app.state.sms_auth`` 注入为捕获型 fake（路由的惰性装配
优先读 app.state），验证码从 fixture 拿而不是去挖生产日志——生产代码不为
测试留任何后门。每用例用随机号码/IP/设备：频控计数按 UTC+8 自然日分桶，
固定值会跨用例、跨次运行、跨天污染 Redis 计数。

``sms_resend_cooldown_seconds`` 覆写为 0：同号二次登录（重复发送）与刷量
循环不必等 60s 真实冷却；冷却语义在单测里用注入时钟验证。
"""

from __future__ import annotations

import os
import uuid
from collections.abc import AsyncIterator
from contextlib import asynccontextmanager
from typing import Any

import httpx
import pytest

from packages.identity.sms_login import RedisSmsStore, SmsAuthService


def _infra_available() -> bool:
    return bool(os.getenv("MEIDA_RUN_INTEGRATION"))


pytestmark = [
    pytest.mark.integration,
    pytest.mark.skipif(
        not _infra_available(),
        reason="set MEIDA_RUN_INTEGRATION=1 with PostgreSQL and Redis running",
    ),
]


class CapturingSender:
    """捕获型 fake sender：把发出去的码留在内存里供 verify 使用。"""

    def __init__(self) -> None:
        self.codes: dict[str, str] = {}

    async def send_code(self, phone: str, masked: str, code: str) -> None:
        self.codes[phone] = code


def _rand_phone() -> str:
    # "139" + 8 位随机数字：合法大陆号形；随机空间 1e8，跨运行撞桶概率可忽略
    return f"139{uuid.uuid4().int % 10**8:08d}"


def _rand_ip() -> str:
    # 随机源 IP（文档保留网段 198.51.100.0/24）：让 IP 维度计数互不污染
    return f"198.51.100.{uuid.uuid4().int % 254 + 1}"


@pytest.fixture
async def env() -> AsyncIterator[tuple[Any, CapturingSender]]:
    from apps.api.main import create_app
    from packages.shared.config import get_settings
    from packages.shared.redis_client import get_redis

    settings = get_settings().model_copy(update={"sms_resend_cooldown_seconds": 0})
    app = create_app(settings)
    sender = CapturingSender()
    app.state.sms_auth = SmsAuthService(RedisSmsStore(get_redis()), sender, settings=settings)
    async with app.router.lifespan_context(app):
        yield app, sender


@asynccontextmanager
async def _client(app: Any, ip: str | None = None) -> AsyncIterator[httpx.AsyncClient]:
    """ASGI 客户端；``client=(ip, port)`` 决定 Request.client.host（IP 维度输入）。"""
    transport = httpx.ASGITransport(app=app, client=(ip or _rand_ip(), 54321))
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as http:
        yield http


async def _send(
    http: httpx.AsyncClient, phone: str, device_id: str | None = None
) -> httpx.Response:
    return await http.post("/api/v1/auth/sms/send", json={"phone": phone, "device_id": device_id})


async def test_send_then_verify_returns_working_token_pair(
    env: tuple[Any, CapturingSender],
) -> None:
    app, sender = env
    phone = _rand_phone()
    async with _client(app) as http:
        sent = await _send(http, phone, device_id="dev-a")
        assert sent.status_code == 200
        body = sent.json()
        assert body["code"] == 0
        assert body["data"] == {"sent": True}

        verify = await http.post(
            "/api/v1/auth/sms/verify",
            json={"phone": phone, "code": sender.codes[phone], "device_id": "dev-a"},
        )
        assert verify.status_code == 200
        data = verify.json()["data"]
        assert data["access_token"]
        assert data["refresh_token"]
        assert data["expires_in"] > 0
        assert data["refresh_expires_in"] > 0
        assert data["user_id"]

        # 新签发的 access 立即可用（双令牌链路闭环）
        quota = await http.get(
            "/api/v1/quota", headers={"Authorization": f"Bearer {data['access_token']}"}
        )
        assert quota.status_code == 200
        assert quota.json()["code"] == 0


async def test_same_phone_relogin_maps_to_same_user(env: tuple[Any, CapturingSender]) -> None:
    app, sender = env
    phone = _rand_phone()
    async with _client(app) as http:
        user_ids = []
        for _ in range(2):
            await _send(http, phone)  # cooldown=0，可立即重发取新码
            verify = await http.post(
                "/api/v1/auth/sms/verify", json={"phone": phone, "code": sender.codes[phone]}
            )
            assert verify.status_code == 200
            user_ids.append(verify.json()["data"]["user_id"])
        # provider="phone" 映射唯一：同号两次登录拿到同一 user_id
        assert user_ids[0] == user_ids[1]


async def test_scripted_flood_eleventh_send_hits_daily_limit(
    env: tuple[Any, CapturingSender],
) -> None:
    """FR-ACC-14 验收原文：脚本化刷量证明拦截有效——同号连发 11 次。

    前 5 次放行；第 6~10 次先撞 1h≤5 的小时窗（42910）；第 11 次撞 24h≤10
    的日窗（42911）。设备逐次更换以隔离设备维度。
    """
    app, _ = env
    phone = _rand_phone()
    async with _client(app) as http:
        for i in range(11):
            resp = await _send(http, phone, device_id=f"flood-dev-{i}")
            body = resp.json()
            if i < 5:
                assert resp.status_code == 200, body
            elif i < 10:
                assert resp.status_code == 429 and body["code"] == 42910, body
            else:
                assert resp.status_code == 429 and body["code"] == 42911, body


async def test_ip_dimension_blocks_twenty_first_send(env: tuple[Any, CapturingSender]) -> None:
    """IP 维度刷量：同一 IP 打 21 个不同号码，第 21 次 42911。"""
    app, _ = env
    ip = _rand_ip()
    async with _client(app, ip=ip) as http:
        for _ in range(20):
            resp = await _send(http, _rand_phone(), device_id=f"ipdev-{uuid.uuid4().hex[:8]}")
            assert resp.status_code == 200, resp.text
        blocked = await _send(http, _rand_phone(), device_id=f"ipdev-{uuid.uuid4().hex[:8]}")
        assert blocked.status_code == 429
        assert blocked.json()["code"] == 42911


async def test_device_dimension_blocks_eleventh_send(env: tuple[Any, CapturingSender]) -> None:
    """设备维度刷量：同一设备换号换 IP 打 11 次，第 11 次 42911。"""
    app, _ = env
    device = f"dev-{uuid.uuid4().hex[:12]}"
    async with _client(app) as http:  # 本用例客户端 IP 固定但仅 11 次发送 < IP 上限 20
        for _ in range(10):
            resp = await _send(http, _rand_phone(), device_id=device)
            assert resp.status_code == 200, resp.text
        blocked = await _send(http, _rand_phone(), device_id=device)
        assert blocked.status_code == 429
        assert blocked.json()["code"] == 42911


async def test_five_wrong_verifies_invalidate_the_code(env: tuple[Any, CapturingSender]) -> None:
    """FR-ACC-04：验证码错 5 次作废——第 5 次仍报 40110，之后正确码也只剩 40111。"""
    app, sender = env
    phone = _rand_phone()
    async with _client(app) as http:
        await _send(http, phone)
        code = sender.codes[phone]
        wrong = code[:-1] + ("0" if code[-1] != "0" else "1")  # 保证 != 真码
        for _ in range(5):
            resp = await http.post("/api/v1/auth/sms/verify", json={"phone": phone, "code": wrong})
            assert resp.status_code == 401
            assert resp.json()["code"] == 40110
        # 码已作废：即使拿到正确码也只能 40111（一次性 + 作废都不留活口）
        after = await http.post("/api/v1/auth/sms/verify", json={"phone": phone, "code": code})
        assert after.status_code == 401
        assert after.json()["code"] == 40111


async def test_send_rejects_malformed_phone(env: tuple[Any, CapturingSender]) -> None:
    """服务层规范化兜底：能过 Pydantic 长度但非大陆号形 → 40000。"""
    app, _ = env
    async with _client(app) as http:
        resp = await _send(http, "00000")
        assert resp.status_code == 400
        assert resp.json()["code"] == 40000