"""Tests del router /agents (list, get, versions, get_version, diff)."""

from pathlib import Path

import pytest
from fastapi.testclient import TestClient

from agentforge_core.api import deps
from agentforge_core.main import create_app

FIXTURES = Path(__file__).parent.parent / "fixtures"


@pytest.fixture(autouse=True)
def patch_settings(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setenv("DATA_DIR", str(tmp_path))
    monkeypatch.setenv("AGENTS_DIR", str(FIXTURES / "agents"))
    monkeypatch.setenv("POLICIES_DIR", str(FIXTURES / "policies"))
    for fn in (
        deps.get_settings,
        deps.get_registry,
        deps.get_policy_store,
        deps.get_orchestrator,
        deps.get_llm_provider,
        deps.get_guardrail_engine,
    ):
        fn.cache_clear()


def test_list_agents_incluye_incident_analyzer() -> None:
    r = TestClient(create_app()).get("/agents")
    assert r.status_code == 200
    assert any(a["name"] == "incident_analyzer" for a in r.json())


def test_get_agent_activo_devuelve_v1() -> None:
    r = TestClient(create_app()).get("/agents/incident_analyzer")
    assert r.status_code == 200
    assert r.json()["version"] == "v1"


def test_get_agent_inexistente_404() -> None:
    r = TestClient(create_app()).get("/agents/inexistente")
    assert r.status_code == 404


def test_list_versions_devuelve_meta() -> None:
    r = TestClient(create_app()).get("/agents/incident_analyzer/versions")
    assert r.status_code == 200
    assert r.json()[0]["id"] == "v1"


def test_get_version_concreta() -> None:
    r = TestClient(create_app()).get("/agents/incident_analyzer/versions/v1")
    assert r.status_code == 200
    assert r.json()["name"] == "incident_analyzer"


def test_get_version_inexistente_404() -> None:
    r = TestClient(create_app()).get("/agents/incident_analyzer/versions/v999")
    assert r.status_code == 404


def test_diff_misma_version_da_diff_vacio() -> None:
    r = TestClient(create_app()).get("/agents/incident_analyzer/versions/v1/diff/v1")
    assert r.status_code == 200
    body = r.json()
    assert body["from_version"] == "v1"
    assert body["to_version"] == "v1"
    assert body["unified_diff"] == ""