"""Tests for the TeamHUB trusted-identity adapter and enforcement middleware."""

from __future__ import annotations

import importlib
import os

import pytest
from fastapi.testclient import TestClient

from app.integrations.identity import (
    SCOPE_DOCUMENTS_ADMIN,
    SCOPE_DOCUMENTS_INGEST,
    SCOPE_DOCUMENTS_READ,
    parse_identity,
)


def test_parse_returns_none_without_actor():
    assert parse_identity({}) is None
    assert parse_identity({"X-TeamHub-Actor": "  "}) is None


def test_parse_reads_all_headers_and_splits_csv():
    ident = parse_identity(
        {
            "X-TeamHub-Actor": "alice",
            "X-TeamHub-Actor-Id": "person-42",
            "X-TeamHub-App": "legacyhub",
            "X-TeamHub-Role": "admin",
            "X-TeamHub-Roles": "admin, qa",
            "X-TeamHub-Scopes": "documents:read, documents:approve",
            "X-TeamHub-Entitlements-Version": "v7",
        }
    )
    assert ident is not None
    assert ident.actor == "alice"
    assert ident.actor_id == "person-42"
    assert ident.app == "legacyhub"
    assert ident.primary_role == "admin"
    assert ident.roles == ("admin", "qa")
    assert ident.scopes == ("documents:read", "documents:approve")
    assert ident.entitlements_version == "v7"


def test_primary_role_is_included_in_roles():
    ident = parse_identity({"X-TeamHub-Actor": "bob", "X-TeamHub-Role": "viewer"})
    assert ident is not None
    assert "viewer" in ident.roles


def test_resolved_scopes_combine_roles_and_explicit_scopes():
    ident = parse_identity(
        {"X-TeamHub-Actor": "carol", "X-TeamHub-Roles": "ingestor", "X-TeamHub-Scopes": "extra:scope"}
    )
    assert ident is not None
    resolved = ident.resolved_scopes()
    assert SCOPE_DOCUMENTS_READ in resolved
    assert SCOPE_DOCUMENTS_INGEST in resolved
    assert "extra:scope" in resolved
    assert SCOPE_DOCUMENTS_ADMIN not in resolved
    assert ident.has_scope(SCOPE_DOCUMENTS_INGEST)
    assert not ident.has_scope(SCOPE_DOCUMENTS_ADMIN)


def test_admin_role_resolves_admin_scope():
    ident = parse_identity({"X-TeamHub-Actor": "root", "X-TeamHub-Roles": "admin"})
    assert ident is not None
    assert ident.has_scope(SCOPE_DOCUMENTS_ADMIN)


# ---- enforcement middleware integration ----

@pytest.fixture
def identity_required_app(monkeypatch):
    monkeypatch.setenv("AUTH_REQUIRE_IDENTITY", "true")
    monkeypatch.delenv("API_KEY", raising=False)
    import app.config as cfg
    import app.main as main_module

    cfg.get_settings.cache_clear()
    importlib.reload(cfg)
    importlib.reload(main_module)
    yield main_module.app
    for _k in ("API_KEY", "INGEST_API_KEY", "AUTH_REQUIRE_IDENTITY"):
        os.environ.pop(_k, None)
    cfg.get_settings.cache_clear()
    importlib.reload(cfg)
    importlib.reload(main_module)


def _patch_health(monkeypatch):
    from app.api import routes_health
    from app.api.schemas import ComponentHealth

    for name in ("_check_postgres", "_check_minio", "_check_opensearch", "_check_qdrant", "_check_redis"):
        monkeypatch.setattr(
            routes_health,
            name,
            lambda n=name: ComponentHealth(name=n.removeprefix("_check_"), status="ok", detail={}),
        )


def test_health_open_without_identity(identity_required_app, monkeypatch):
    from app.config import settings

    _patch_health(monkeypatch)
    client = TestClient(identity_required_app)
    res = client.get(f"{settings.app_api_prefix}/health")
    assert res.status_code == 200


def test_protected_route_rejected_without_identity(identity_required_app, monkeypatch):
    from app.config import settings
    from app.indexing import hybrid_search

    monkeypatch.setattr(hybrid_search, "run_search", lambda req: pytest.fail("must not run"))
    client = TestClient(identity_required_app)
    res = client.post(
        f"{settings.app_api_prefix}/search",
        json={"query": "x", "limit": 1, "filters": {}, "search_mode": "hybrid"},
    )
    assert res.status_code == 401
    assert "identity" in res.json()["detail"]


def test_protected_route_allowed_with_identity(identity_required_app, monkeypatch):
    from app.api.schemas import SearchResponse
    from app.config import settings
    from app.indexing import hybrid_search

    monkeypatch.setattr(
        hybrid_search,
        "run_search",
        lambda req: SearchResponse(
            query=req.query, mode=req.search_mode, total_candidates=0, reranked=False, results=[]
        ),
    )
    client = TestClient(identity_required_app)
    res = client.post(
        f"{settings.app_api_prefix}/search",
        headers={"X-TeamHub-Actor": "alice", "X-TeamHub-Roles": "qa"},
        json={"query": "x", "limit": 1, "filters": {}, "search_mode": "hybrid"},
    )
    assert res.status_code == 200