"""Tests del AgentRegistry."""

import shutil
from datetime import UTC, datetime
from pathlib import Path

from forja_core.domain.agent import AgentDefinition, LLMConfig
from forja_core.registry.repository import FileSystemAgentRegistry

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


def test_get_agent_carga_version_activa() -> None:
    r = FileSystemAgentRegistry(FIXTURES)
    a = r.get_agent("test_agent")
    assert a.name == "test_agent"
    assert a.version == "v1"


def test_list_versions_devuelve_metadata() -> None:
    r = FileSystemAgentRegistry(FIXTURES)
    metas = r.list_versions("test_agent")
    assert len(metas) == 2
    assert {m.id for m in metas} == {"v1", "v2"}


def test_upsert_crea_nueva_version_y_actualiza_index(tmp_path: Path) -> None:
    # Copiamos el fixture a tmp para no contaminar el repo
    shutil.copytree(FIXTURES / "test_agent", tmp_path / "test_agent")
    r = FileSystemAgentRegistry(tmp_path)
    new_def = AgentDefinition(
        name="test_agent",
        version="v2",
        owner="Juan",
        purpose="añade lógica",
        state="active",
        guardrails=["test_policy"],
        llm=LLMConfig(temperature=0.3),
        system_prompt="Eres un agente actualizado.",
        output_schema={"type": "object"},
        updated_at=datetime.now(UTC),
    )
    meta = r.upsert_version("test_agent", new_def, message="bump temp", author="Juan")
    assert meta.id == "v2"
    assert (tmp_path / "test_agent" / "versions" / "v2.yaml").exists()
    # active_version debe haber cambiado
    a = r.get_agent("test_agent")
    assert a.version == "v2"


def test_diff_versions_retorna_unified_diff(tmp_path: Path) -> None:
    shutil.copytree(FIXTURES / "test_agent", tmp_path / "test_agent")
    r = FileSystemAgentRegistry(tmp_path)
    new_def = AgentDefinition(
        name="test_agent",
        version="v2",
        owner="Juan",
        purpose="distinto",
        state="active",
        guardrails=["test_policy"],
        llm=LLMConfig(),
        system_prompt="otro prompt",
        output_schema={"type": "object"},
        updated_at=datetime.now(UTC),
    )
    r.upsert_version("test_agent", new_def, message="change", author="Juan")
    diff = r.diff_versions("test_agent", "v1", "v2")
    assert "purpose" in diff.unified_diff
    assert diff.from_version == "v1"
    assert diff.to_version == "v2"