from __future__ import annotations

import json
from datetime import datetime, timezone
from uuid import uuid4

from fastapi.testclient import TestClient

from hub_core.contracts import extension_contract_root
from hub_core.runtime.app import create_app
from hub_core.runtime.cli import _sync_database_url, build_parser
from hub_core.runtime.config import RuntimeSettings
from hub_core.runtime.store import InMemoryPortStore


def client(*, allow_ephemeral: bool = True, environment: str = "test") -> TestClient:
    settings = RuntimeSettings(
        environment=environment,
        backend="memory",
        allow_ephemeral=allow_ephemeral,
    )
    return TestClient(create_app(settings=settings, port_store=InMemoryPortStore()))


def ops_hub_package() -> dict:
    fixture = extension_contract_root().joinpath("fixtures", "ops-hub.extension.json")
    return json.loads(fixture.read_text(encoding="utf-8"))


def event_body(event_type: str) -> dict:
    return {
        "schema_version": "0.1.0",
        "correlation_id": str(uuid4()),
        "event_type": event_type,
        "occurred_at": datetime.now(timezone.utc).isoformat(),
        "subject_refs": {"hub": "ops-hub"},
        "payload": {"result": "ok"},
    }


def test_health_and_ephemeral_readiness() -> None:
    runtime = client()
    health = runtime.get("/healthz")
    ready = runtime.get("/readyz")

    assert health.status_code == 200
    assert health.json()["service"] == "hub-core"
    assert ready.status_code == 200
    assert ready.json()["status"] == "ok"
    assert ready.json()["checks"]["active_backend"] == "memory"


def test_production_readiness_fails_closed_for_ephemeral_backend() -> None:
    response = client(allow_ephemeral=False, environment="production").get("/readyz")

    assert response.status_code == 503
    assert response.json()["status"] == "degraded"
    assert response.json()["checks"]["ephemeral_backend"] == "not_allowed"


def test_protected_compatibility_readiness_requires_authorization_dependency() -> None:
    settings = RuntimeSettings(
        environment="test",
        backend="memory",
        allow_ephemeral=True,
        v2_groups=frozenset({"registry"}),
    )
    response = TestClient(
        create_app(settings=settings, port_store=InMemoryPortStore())
    ).get("/readyz")

    assert response.status_code == 503
    assert response.json()["checks"]["authorization"] == "unavailable"


def test_registry_validates_and_registers_idempotently() -> None:
    runtime = client()
    package = ops_hub_package()
    correlation_id = str(uuid4())

    first = runtime.post(
        "/ports/registry/registrations",
        headers={"X-Correlation-ID": correlation_id},
        json=package,
    )
    second = runtime.post(
        "/ports/registry/registrations",
        headers={"X-Correlation-ID": correlation_id},
        json=package,
    )
    projection = runtime.get("/ports/projections/hub_registry")

    assert first.status_code == 202
    assert first.json()["status"] == "accepted"
    assert second.status_code == 202
    assert second.json()["status"] == "duplicate"
    assert projection.status_code == 200
    assert projection.json()["data"]["items"][0]["descriptor"]["hub_slug"] == "ops-hub"


def test_registry_rejects_contract_mismatch() -> None:
    runtime = client()
    package = ops_hub_package()
    package["manifest"]["reuse_surface_id"] = "capability.operations.other-hub"

    response = runtime.post(
        "/ports/registry/registrations",
        headers={"X-Correlation-ID": str(uuid4())},
        json=package,
    )

    assert response.status_code == 422
    assert "reuse_surface_id must match" in response.json()["detail"]


def test_messaging_port_writes_and_reads_conversation() -> None:
    runtime = client()
    conversation_id = uuid4()
    body = {
        "schema_version": "0.1.0",
        "correlation_id": str(uuid4()),
        "conversation_id": str(conversation_id),
        "from_address": "agent:codex",
        "to_addresses": ["hub:ops-hub", "agent:operator"],
        "body": "Non-secret runtime smoke.",
        "subject_refs": {"hub": "ops-hub"},
    }

    sent = runtime.post("/ports/messaging/messages", json=body)
    listed = runtime.get(
        "/ports/messaging/messages",
        params={"address": "hub:ops-hub", "conversation_id": str(conversation_id)},
    )

    assert sent.status_code == 202
    assert listed.status_code == 200
    assert len(listed.json()["items"]) == 1
    assert listed.json()["items"][0]["data"]["body"] == body["body"]


def test_progress_and_interaction_events_stay_separate() -> None:
    runtime = client()

    progress = runtime.post("/ports/events/progress", json=event_body("hub.progress.recorded"))
    interaction = runtime.post(
        "/ports/events/interaction",
        json=event_body("hub.interaction.recorded"),
    )
    progress_projection = runtime.get("/ports/projections/progress_events").json()
    interaction_projection = runtime.get("/ports/projections/interaction_events").json()

    assert progress.status_code == 202
    assert interaction.status_code == 202
    assert [item["family"] for item in progress_projection["data"]["items"]] == ["progress"]
    assert [item["family"] for item in interaction_projection["data"]["items"]] == [
        "interaction"
    ]


def test_event_ports_reject_wrong_or_uncataloged_families() -> None:
    runtime = client()

    wrong_family = runtime.post(
        "/ports/events/progress",
        json=event_body("hub.interaction.recorded"),
    )
    unknown = runtime.post(
        "/ports/events/interaction",
        json=event_body("hub.interaction.unknown"),
    )

    assert wrong_family.status_code == 422
    assert "belongs to 'interaction'" in wrong_family.json()["detail"]
    assert unknown.status_code == 422
    assert "is not cataloged" in unknown.json()["detail"]


def test_unknown_projection_is_not_found() -> None:
    response = client().get("/ports/projections/not-a-projection")

    assert response.status_code == 404


def test_runtime_openapi_marks_the_five_minimal_ports() -> None:
    document = client().get("/openapi.json").json()
    port_ids = {
        operation["x-port-id"]
        for path_item in document["paths"].values()
        for method, operation in path_item.items()
        if method in {"get", "post", "put", "patch", "delete"} and "x-port-id" in operation
    }

    assert port_ids == {
        "port.registry",
        "port.messaging",
        "port.events.progress",
        "port.events.interaction",
        "port.projection.query",
    }


def test_cli_exposes_api_mcp_and_migration_processes() -> None:
    parser = build_parser(RuntimeSettings())

    assert parser.parse_args(["api"]).command == "api"
    assert parser.parse_args(["mcp"]).command == "mcp"
    assert parser.parse_args(["migrate", "head", "--database-url", "postgresql://db"]).command == (
        "migrate"
    )
    assert _sync_database_url("postgresql+asyncpg://db") == "postgresql+psycopg2://db"