from datetime import datetime

from fastapi.testclient import TestClient

from app.database import get_db
from app.main import create_app
from app.models import WanfaCategory, WanfaRoute


class FakeScalarResult:
    def __init__(self, items):
        self.items = items

    def all(self):
        return self.items


class FakeDb:
    def __init__(self, items):
        self.items = items

    def scalars(self, _statement):
        return FakeScalarResult(self.items)


def make_route():
    return WanfaRoute(
        id="family-water",
        categoryId="family-route",
        title="亲子玩水",
        subtitle="贵州·轻松节奏与自然课堂",
        image="https://example.test/family-water.jpg",
        routeCount=4,
        demandKeyword="亲子玩水",
        sortOrder=0,
        createdAt=datetime(2026, 1, 1),
        updatedAt=datetime(2026, 1, 2),
    )


def test_public_wanfa_categories_returns_frontend_display_contract_without_auth():
    category = WanfaCategory(
        id="family-route",
        label="亲子路线",
        sortOrder=0,
        createdAt=datetime(2026, 1, 1),
        updatedAt=datetime(2026, 1, 2),
        routes=[make_route()],
    )
    app = create_app()
    app.dependency_overrides[get_db] = lambda: FakeDb([category])

    try:
        response = TestClient(app).get("/api/public/wanfa/categories")
    finally:
        app.dependency_overrides.clear()

    assert response.status_code == 200
    assert response.json() == {
        "code": 200,
        "msg": "success",
        "data": {
            "categories": [
                {
                    "id": "family-route",
                    "label": "亲子路线",
                    "routes": [
                        {
                            "id": "family-water",
                            "title": "亲子玩水",
                            "subtitle": "贵州·轻松节奏与自然课堂",
                            "image": "https://example.test/family-water.jpg",
                            "routeCount": 4,
                            "demandKeyword": "亲子玩水",
                        }
                    ],
                }
            ]
        },
    }