"""Refresh token rotation HTTP scenarios (sqlite + real AuthService)."""

from __future__ import annotations

import asyncio
import uuid
from datetime import timedelta
from unittest.mock import MagicMock

import pytest
from fastapi import FastAPI
from httpx import ASGITransport, AsyncClient
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker

from app.core.config import settings
from app.core.db import get_async_db, utc_now
from app.core.dependencies import get_object_storage, get_sms_sender
from app.features.auth import repo
from app.features.auth.router import router as auth_router
from tests.conftest import install_test_error_handlers
from tests.support.auth_async_sqlite import seed_user_with_refresh_token


@pytest.fixture
async def refresh_http_app(
    auth_session_factory: async_sessionmaker[AsyncSession],
) -> FastAPI:
    async def _override_db():
        async with auth_session_factory() as session:
            yield session

    app = install_test_error_handlers(FastAPI())
    app.include_router(auth_router)
    app.dependency_overrides[get_async_db] = _override_db
    app.dependency_overrides[get_sms_sender] = lambda: MagicMock()
    app.dependency_overrides[get_object_storage] = lambda: MagicMock()
    return app


@pytest.mark.asyncio
async def test_refresh_rotates_token_http(
    refresh_http_app: FastAPI,
    auth_session_factory: async_sessionmaker[AsyncSession],
) -> None:
    async with auth_session_factory() as session:
        await seed_user_with_refresh_token(session, refresh_token="token-v1")

    transport = ASGITransport(app=refresh_http_app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/auth/refresh",
            json={"refresh_token": "token-v1"},
        )

    assert response.status_code == 200
    body = response.json()
    assert body["access_token"]
    assert body["refresh_token"] != "token-v1"


@pytest.mark.asyncio
async def test_refresh_concurrent_same_token_within_grace(
    refresh_http_app: FastAPI,
    auth_session_factory: async_sessionmaker[AsyncSession],
) -> None:
    async with auth_session_factory() as session:
        await seed_user_with_refresh_token(session, refresh_token="token-concurrent")

    transport = ASGITransport(app=refresh_http_app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        first, second = await asyncio.gather(
            client.post(
                "/api/auth/refresh",
                json={"refresh_token": "token-concurrent"},
            ),
            client.post(
                "/api/auth/refresh",
                json={"refresh_token": "token-concurrent"},
            ),
        )

    assert first.status_code in (200, 401)
    assert second.status_code in (200, 401)
    assert first.status_code == 200 or second.status_code == 200
    responses = [first, second]
    success = [r for r in responses if r.status_code == 200]
    assert len(success) >= 1
    assert all(
        r.json().get("error_code") != "REFRESH_TOKEN_REUSE"
        for r in responses
        if r.status_code != 200
    )
    if len(success) == 2:
        assert success[0].json()["refresh_token"] == success[1].json()["refresh_token"]
    assert success[0].json()["refresh_token"] != "token-concurrent"


@pytest.mark.asyncio
async def test_refresh_sequential_reuse_within_grace(
    refresh_http_app: FastAPI,
    auth_session_factory: async_sessionmaker[AsyncSession],
) -> None:
    """Network retry: second call with old refresh token succeeds within grace."""
    async with auth_session_factory() as session:
        await seed_user_with_refresh_token(session, refresh_token="token-retry")

    transport = ASGITransport(app=refresh_http_app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        first = await client.post(
            "/api/auth/refresh",
            json={"refresh_token": "token-retry"},
        )
        second = await client.post(
            "/api/auth/refresh",
            json={"refresh_token": "token-retry"},
        )

    assert first.status_code == 200
    assert second.status_code == 200
    assert first.json()["refresh_token"] == second.json()["refresh_token"]
    assert first.json()["refresh_token"] != "token-retry"


@pytest.mark.asyncio
async def test_refresh_reuse_after_grace_returns_401(
    refresh_http_app: FastAPI,
    auth_session_factory: async_sessionmaker[AsyncSession],
) -> None:
    async with auth_session_factory() as session:
        await seed_user_with_refresh_token(session, refresh_token="token-grace")

    transport = ASGITransport(app=refresh_http_app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        first = await client.post(
            "/api/auth/refresh",
            json={"refresh_token": "token-grace"},
        )
        assert first.status_code == 200

    async with auth_session_factory() as session:
        old = await repo.get_refresh_token_by_token("token-grace", session)
        assert old is not None
        old.rotated_at = utc_now() - timedelta(
            seconds=settings.refresh_token_reuse_grace_seconds + 5
        )
        await session.commit()

    async with AsyncClient(transport=transport, base_url="http://test") as client:
        reuse = await client.post(
            "/api/auth/refresh",
            json={"refresh_token": "token-grace"},
        )

    assert reuse.status_code == 401
    body = reuse.json()
    assert body["error_code"] == "REFRESH_TOKEN_REUSE"
    assert body["message"]
    assert "request_id" in body


@pytest.mark.asyncio
async def test_refresh_unknown_token_401(
    refresh_http_app: FastAPI,
    auth_session_factory: async_sessionmaker[AsyncSession],
) -> None:
    async with auth_session_factory() as session:
        await seed_user_with_refresh_token(
            session, refresh_token="unused", user_id=str(uuid.uuid4())
        )

    transport = ASGITransport(app=refresh_http_app)
    async with AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/auth/refresh",
            json={"refresh_token": "missing-token"},
        )

    assert response.status_code == 401
    body = response.json()
    assert body["error_code"] == "AUTHENTICATION_FAILED"
    assert "request_id" in body