from fastapi import FastAPI
from fastapi.responses import JSONResponse
from fastapi.testclient import TestClient
from inline_snapshot import snapshot
from pydantic import BaseModel

app = FastAPI()


class JsonApiResponse(JSONResponse):
    media_type = "application/vnd.api+json"


class Error(BaseModel):
    status: str
    title: str


class JsonApiError(BaseModel):
    errors: list[Error]


@app.get(
    "/a",
    status_code=204,
    response_class=JsonApiResponse,
    responses={500: {"description": "Error", "model": JsonApiError}},
)
async def a():
    pass


@app.get("/b", responses={204: {"description": "No Content"}})
async def b():
    pass  # pragma: no cover


client = TestClient(app)


def test_get_response():
    response = client.get("/a")
    assert response.status_code == 204, response.text
    assert "content-length" not in response.headers
    assert response.content == b""


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/a": {
                    "get": {
                        "responses": {
                            "500": {
                                "description": "Error",
                                "content": {
                                    "application/vnd.api+json": {
                                        "schema": {
                                            "$ref": "#/components/schemas/JsonApiError"
                                        }
                                    }
                                },
                            },
                            "204": {"description": "Successful Response"},
                        },
                        "summary": "A",
                        "operationId": "a_a_get",
                    }
                },
                "/b": {
                    "get": {
                        "responses": {
                            "204": {"description": "No Content"},
                            "200": {
                                "description": "Successful Response",
                                "content": {"application/json": {"schema": {}}},
                            },
                        },
                        "summary": "B",
                        "operationId": "b_b_get",
                    }
                },
            },
            "components": {
                "schemas": {
                    "Error": {
                        "title": "Error",
                        "required": ["status", "title"],
                        "type": "object",
                        "properties": {
                            "status": {"title": "Status", "type": "string"},
                            "title": {"title": "Title", "type": "string"},
                        },
                    },
                    "JsonApiError": {
                        "title": "JsonApiError",
                        "required": ["errors"],
                        "type": "object",
                        "properties": {
                            "errors": {
                                "title": "Errors",
                                "type": "array",
                                "items": {"$ref": "#/components/schemas/Error"},
                            }
                        },
                    },
                }
            },
        }
    )
