import json
from io import BytesIO

from phase_memory import LocalServiceRunner, ServiceBinding
from phase_memory.service_binding import READINESS_REPORT_SCHEMA


def test_service_binding_exposes_health_readiness_and_contracts_without_listener() -> None:
    binding = ServiceBinding(LocalServiceRunner())

    health = binding.route("GET", "/health")
    ready = binding.route("GET", "/ready")
    contracts = binding.route("GET", "/contracts")

    assert health.status == 200
    assert ready.status == 200
    assert ready.body["schema_version"] == READINESS_REPORT_SCHEMA
    assert ready.body["unsupported_operations"] == []
    assert "package.compile" in contracts.body["operations"]


def test_service_binding_dispatches_operation_payloads() -> None:
    binding = ServiceBinding(LocalServiceRunner())
    selection = {
        "schema_version": "markitect.memory.selection.v1",
        "id": "binding.selection",
        "nodes": [],
        "events": [],
    }

    response = binding.route("POST", "/operations/package.compile", {"selection": selection})

    assert response.status == 200
    assert response.body["operation"] == "package.compile"
    assert response.body["data"]["package_response"]["package_ref"] == "package:binding.selection"


def test_service_binding_wsgi_adapter_is_callable_without_starting_server() -> None:
    binding = ServiceBinding(LocalServiceRunner())
    app = binding.as_wsgi_app()
    statuses: list[str] = []
    headers: list[list[tuple[str, str]]] = []

    payload = json.dumps({"operation": "health.check", "payload": {}}).encode("utf-8")
    result = app(
        {
            "REQUEST_METHOD": "POST",
            "PATH_INFO": "/operations",
            "CONTENT_LENGTH": str(len(payload)),
            "wsgi.input": BytesIO(payload),
        },
        lambda status, response_headers: (statuses.append(status), headers.append(response_headers)),
    )

    body = json.loads(b"".join(result).decode("utf-8"))
    assert statuses == ["200 OK"]
    assert body["schema_version"] == "phase_memory.health.report.v1"
    assert ("content-type", "application/json") in headers[0]