import pytest
from fastapi.testclient import TestClient

from app.main import app
from app.dependencies import get_search_client


class FakeSearchClient:
    def __init__(self):
        self.queries = []

    def search(self, query):
        self.queries.append(query)
        if query == "检索":
            return [
                {
                    "key": "产品文档/架构设计.md",
                    "title": "架构设计.md",
                    "path": "产品文档",
                    "snippet": "支持全文<em>检索</em>功能",
                }
            ]
        return []


@pytest.fixture
def client():
    fake_client = FakeSearchClient()
    app.dependency_overrides[get_search_client] = lambda: fake_client
    with TestClient(app) as test_client:
        test_client.fake_client = fake_client
        yield test_client
    app.dependency_overrides.clear()


def test_search_returns_matching_results(client):
    response = client.get("/api/search", params={"q": "检索"})
    assert response.status_code == 200
    body = response.json()
    assert body["results"][0]["key"] == "产品文档/架构设计.md"
    assert "<em>检索</em>" in body["results"][0]["snippet"]


def test_search_returns_empty_results_for_no_match(client):
    response = client.get("/api/search", params={"q": "不存在的关键词"})
    assert response.status_code == 200
    assert response.json() == {"results": []}


def test_search_passes_query_string_to_search_client(client):
    client.get("/api/search", params={"q": "Garage"})
    assert client.fake_client.queries == ["Garage"]