"""Smoke tests for openapi_first.binder."""

import types

import pytest
from fastapi import FastAPI

from openapi_first.binder import bind_routes
from openapi_first.errors import MissingOperationHandler


def _routes_module():
    module = types.ModuleType("smoke_routes")

    def get_health():
        return {"status": "ok"}

    module.get_health = get_health
    return module


def test_bind_routes_registers_matching_routes(minimal_spec):
    from fastapi.routing import APIRoute

    app = FastAPI()
    bind_routes(app, minimal_spec, _routes_module())
    bound = [r for r in app.router.routes if isinstance(r, APIRoute)]
    assert len(bound) == 1
    assert bound[0].name == "get_health"
    assert bound[0].path == "/health"
    assert "GET" in bound[0].methods


def test_bind_routes_missing_handler(minimal_spec):
    app = FastAPI()
    module = types.ModuleType("empty_routes")
    with pytest.raises(MissingOperationHandler):
        bind_routes(app, minimal_spec, module)


def test_bind_routes_missing_operation_id(spec_file):
    spec = {
        "openapi": "3.0.3",
        "info": {"title": "No OpId", "version": "1.0.0"},
        "paths": {"/health": {"get": {"responses": {"200": {"description": "OK"}}}}},
    }
    app = FastAPI()
    with pytest.raises(MissingOperationHandler):
        bind_routes(app, spec, _routes_module())


def test_bind_routes_ignores_spec_only_paths():
    from fastapi.routing import APIRoute

    spec = {
        "openapi": "3.0.3",
        "info": {"title": "Path Item", "version": "1.0.0"},
        "paths": {
            "/health": {
                "parameters": [{"name": "x-trace", "in": "header"}],
                "get": {
                    "operationId": "get_health",
                    "responses": {"200": {"description": "OK"}},
                },
            }
        },
    }
    app = FastAPI()
    bind_routes(app, spec, _routes_module())
    bound = [r for r in app.router.routes if isinstance(r, APIRoute)]
    assert len(bound) == 1
    assert bound[0].name == "get_health"