"""Dual-mount /api + /api/v1 tests (Stage 1 PR5).

Every migrated legacy router must answer on BOTH /api/<x> and /api/v1/<x>.
Asserts route presence on the OpenAPI schema (independent of per-route auth).
"""

from __future__ import annotations

from app.gateway.app import create_app


def _paths():
    return set(create_app().openapi()["paths"].keys())


def test_models_dual_mounted():
    paths = _paths()
    assert "/api/models" in paths
    assert "/api/v1/models" in paths


def test_runs_dual_mounted():
    paths = _paths()
    assert "/api/runs/stream" in paths
    assert "/api/v1/runs/stream" in paths


def test_every_legacy_api_path_has_v1_twin():
    """Strong invariant: every unversioned /api/* path (except the
    intentionally-excluded surfaces) must also exist under /api/v1/*.
    Catches any single legacy router losing its v1 mount."""
    paths = _paths()
    excluded_prefixes = ("/api/v1/", "/api/langgraph/", "/api/assistants")
    legacy = {p for p in paths if p.startswith("/api/") and not p.startswith(excluded_prefixes)}
    assert legacy, "expected some unversioned /api/* paths"
    missing = sorted(p for p in legacy if ("/api/v1/" + p[len("/api/") :]) not in paths)
    assert missing == [], f"legacy /api paths without an /api/v1 twin: {missing}"


def test_uploads_dual_mounted():
    paths = _paths()
    assert any(p.startswith("/api/threads/") and "/uploads" in p for p in paths)
    assert any(p.startswith("/api/v1/threads/") and "/uploads" in p for p in paths)


def test_auth_only_v1_not_dual():
    # auth stays v1-only — must NOT acquire an /api/auth twin.
    paths = _paths()
    assert "/api/v1/auth/me" in paths
    assert "/api/auth/me" not in paths


def test_no_v1_langgraph_twins():
    paths = _paths()
    assert not any(p.startswith("/api/v1/langgraph") for p in paths)
    assert not any(p.startswith("/api/v1/assistants") for p in paths)