from fastapi import APIRouter, HTTPException
from fastapi.testclient import TestClient
from starlette.responses import PlainTextResponse

from iti import create_app
from iti.config import BaseConfig
from iti.exceptions import BizError
from iti.limiter import limit
from iti.responses import ok, raw_response


class RoutesModule:
    name = "routes"

    def register_routes(self, app):
        router = APIRouter()

        @router.get("/demo")
        def demo():
            return ok({"value": 1})

        @router.get("/auto")
        def auto():
            return {"value": 2}

        @router.get("/raw")
        @raw_response
        def raw():
            return {"value": 3}

        @router.get("/text")
        def text():
            return PlainTextResponse("ok")

        @router.get("/boom")
        def boom():
            raise BizError("业务失败", code=400)

        @router.get("/http-error")
        def http_error():
            raise HTTPException(status_code=418, detail={"message": "茶壶错误"})

        @router.get("/limited", dependencies=[limit("1 per minute")])
        def limited():
            return ok()

        app.include_router(router)


def make_app(**config_values):
    config = BaseConfig(
        database_url="sqlite+pysqlite:///:memory:",
        testing=True,
        **config_values,
    )
    return create_app(modules=[RoutesModule()], config_mapping=config)


def test_framework_health_routes():
    client = TestClient(make_app())

    assert client.get("/health").json() == {"status": "ok"}
    assert client.get("/ready").json() == {"status": "ok"}


def test_docs_picker_and_ui_variants_are_available():
    client = TestClient(make_app())

    picker = client.get("/docs")
    swagger = client.get("/docs?ui=swagger")
    scalar = client.get("/docs?ui=scalar")
    redoc = client.get("/docs?ui=redoc")

    assert picker.status_code == 200
    assert "Swagger" in picker.text
    assert "Scalar" in picker.text
    assert "ReDoc" in picker.text
    assert "<svg viewBox" in picker.text
    assert "-&gt;" not in picker.text
    assert swagger.status_code == 200
    assert "swagger-ui" in swagger.text
    assert scalar.status_code == 200
    assert "@scalar/api-reference" in scalar.text
    assert 'data-url="/openapi.json"' in scalar.text
    assert redoc.status_code == 200
    assert "redoc" in redoc.text.lower()


def test_docs_templates_are_packaged_resources():
    client = TestClient(make_app())

    picker = client.get("/docs")
    scalar = client.get("/docs?ui=scalar")

    assert "<title>iTi - API Docs</title>" in picker.text
    assert "<title>iTi - Scalar API Reference</title>" in scalar.text


def test_docs_picker_only_shows_enabled_ui():
    client = TestClient(make_app(docs_ui_enabled=["swagger"]))

    picker = client.get("/docs")
    scalar = client.get("/docs?ui=scalar")
    redoc = client.get("/docs?ui=redoc")

    assert picker.status_code == 200
    assert "Swagger" in picker.text
    assert "Scalar" not in picker.text
    assert "ReDoc" not in picker.text
    assert scalar.status_code == 200
    assert "@scalar/api-reference" not in scalar.text
    assert redoc.status_code == 200
    assert ">ReDoc<" not in redoc.text


def test_envelope_and_error_handlers():
    client = TestClient(make_app())

    assert client.get("/demo").json() == {
        "data": {"value": 1},
        "code": 200,
        "message": "成功",
    }
    response = client.get("/boom")
    assert response.status_code == 200
    assert response.json()["message"] == "业务失败"


def test_http_errors_use_envelope():
    client = TestClient(make_app())

    not_found = client.get("/")
    assert not_found.status_code == 200
    assert not_found.json() == {
        "data": None,
        "code": 404,
        "message": "Not Found",
    }

    method_not_allowed = client.post("/demo")
    assert method_not_allowed.status_code == 200
    assert method_not_allowed.json()["code"] == 405
    assert method_not_allowed.json()["message"] == "Method Not Allowed"

    http_error = client.get("/http-error")
    assert http_error.status_code == 200
    assert http_error.json() == {
        "data": {"message": "茶壶错误"},
        "code": 418,
        "message": "茶壶错误",
    }


def test_auto_envelope_wraps_plain_json_and_raw_can_skip():
    client = TestClient(make_app(raw_response_paths=["/health", "/ready", "/raw-path"]))

    assert client.get("/auto").json() == {
        "data": {"value": 2},
        "code": 200,
        "message": "成功",
    }
    assert client.get("/raw").json() == {"value": 3}
    assert client.get("/text").text == "ok"


def test_rate_limit_dependency():
    client = TestClient(make_app(ratelimit_enabled=True))

    assert client.get("/limited").status_code == 200
    response = client.get("/limited")

    assert response.status_code == 200
    assert response.json()["code"] == 429


def test_request_log_includes_business_code(monkeypatch):
    records = []

    def capture(message, *args, **kwargs):
        records.append((message, args, kwargs))

    monkeypatch.setattr("iti.app.logger.info", capture)
    client = TestClient(make_app())

    assert client.get("/auto").json()["code"] == 200
    assert records[-1][1][3] == 200
    assert records[-1][2]["extra"]["response_code"] == 200

    assert client.get("/boom").json()["code"] == 400
    assert records[-1][1][3] == 400
    assert records[-1][2]["extra"]["response_code"] == 400