from datetime import datetime

from fastapi.testclient import TestClient
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.pool import StaticPool

from app.core.config import get_settings
from app.db.models import AgentRun, Base, Signal
from app.db.session import get_db
from app.main import create_app


def test_health_endpoint_returns_app_identity(monkeypatch) -> None:
    # 健康检查只暴露服务身份，不触发Agent运行或数据库写入。
    monkeypatch.setenv("SIGNALSCOUT_ENV", "test")
    get_settings.cache_clear()
    with TestClient(create_app()) as client:
        response = client.get("/health")
    get_settings.cache_clear()

    assert response.status_code == 200
    assert response.json()["status"] == "ok"
    assert response.json()["app"] == "SignalScout"


def test_home_page_returns_dashboard_shell(monkeypatch) -> None:
    # 根路径应该展示业务工作台，而不是返回接口404。
    monkeypatch.setenv("SIGNALSCOUT_ENV", "test")
    get_settings.cache_clear()
    with TestClient(create_app()) as client:
        response = client.get("/")
    get_settings.cache_clear()

    assert response.status_code == 200
    assert "SignalScout" in response.text
    assert "今日 AI 信号" in response.text
    assert "renderMarkdownReport" in response.text
    assert "自动记录" not in response.text
    assert "采集今日情报" not in response.text


def test_manual_agent_run_endpoint_is_not_exposed(monkeypatch) -> None:
    # Agent只通过后台调度器自动运行，HTTP API不提供手动启动入口。
    monkeypatch.setenv("SIGNALSCOUT_ENV", "test")
    get_settings.cache_clear()
    with TestClient(create_app()) as client:
        response = client.post("/agent/runs/daily")
        stream_response = client.post("/agent/runs/daily/stream")
    get_settings.cache_clear()

    assert response.status_code == 404
    assert stream_response.status_code == 404


def test_dashboard_returns_news_and_github_signals_separately(monkeypatch) -> None:
    # 仪表盘接口直接返回分组后的业务数据，前端不再用标题或来源名自行猜测分类。
    monkeypatch.setenv("SIGNALSCOUT_ENV", "test")
    get_settings.cache_clear()
    engine = create_engine(
        "sqlite:///:memory:",
        connect_args={"check_same_thread": False},
        poolclass=StaticPool,
        future=True,
    )
    TestingSessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)
    Base.metadata.create_all(engine)

    with TestingSessionLocal() as session:
        run = AgentRun(status="completed", started_at=datetime(2026, 7, 8, 8, 0), request_payload={})
        session.add(run)
        session.flush()
        session.add_all(
            [
                Signal(
                    run_id=run.id,
                    source_type="news",
                    topic="AI 新闻",
                    title="New model release",
                    summary="模型发布动态。",
                    source_url="https://example.com/news",
                    source_url_hash="news-hash",
                    source_name="Example News",
                    published_at=datetime(2026, 7, 8, 9, 0),
                    importance=4,
                    entities=["Example"],
                ),
                Signal(
                    run_id=run.id,
                    source_type="github",
                    topic="GitHub 热门项目",
                    title="example/agent-kit",
                    summary="开源项目动态。",
                    source_url="https://github.com/example/agent-kit",
                    source_url_hash="github-hash",
                    source_name="GitHub",
                    published_at=datetime(2026, 7, 8, 10, 0),
                    importance=5,
                    entities=["example/agent-kit"],
                ),
            ]
        )
        session.commit()

    def override_get_db():
        # 测试依赖把接口请求限制在内存库里，避免触碰开发数据库。
        db = TestingSessionLocal()
        try:
            yield db
        finally:
            db.close()

    app = create_app()
    app.dependency_overrides[get_db] = override_get_db
    with TestClient(app) as client:
        dashboard_response = client.get("/dashboard")
        github_response = client.get("/signals", params={"source_type": "github"})
    get_settings.cache_clear()

    dashboard = dashboard_response.json()
    assert dashboard_response.status_code == 200
    assert [item["source_type"] for item in dashboard["news_signals"]] == ["news"]
    assert [item["source_type"] for item in dashboard["github_signals"]] == ["github"]
    assert github_response.status_code == 200
    assert [item["title"] for item in github_response.json()] == ["example/agent-kit"]