"""Tests for graph wiring, routing, and the judge evaluation loop."""

from types import SimpleNamespace
from unittest.mock import MagicMock, patch

from gaia_agent.nodes import (
    judge,
    route_after_judge,
    route_after_research,
)
from gaia_agent.schemas import JudgeVerdict


def test_graph_compiles():
    from gaia_agent.graph import graph

    assert graph.name == "GAIA Agent"
    nodes = set(graph.get_graph().nodes.keys())
    assert {"ingest_file", "research", "tools", "solver", "judge", "formatter"} <= nodes


def test_route_after_research_tools_vs_solver():
    with_calls = SimpleNamespace(tool_calls=[{"name": "tavily_search"}])
    without = SimpleNamespace(tool_calls=[])
    assert route_after_research({"messages": [with_calls]}) == "tools"
    assert route_after_research({"messages": [without]}) == "solver"


def test_route_after_judge_pass():
    state = {"verdict": JudgeVerdict(verdict="PASS"), "attempts": 0}
    assert route_after_judge(state) == "formatter"


def test_route_after_judge_revise_within_budget():
    state = {"verdict": JudgeVerdict(verdict="REVISE"), "attempts": 0}
    with patch("gaia_agent.nodes.get_settings", return_value=SimpleNamespace(max_judge_retries=1)):
        assert route_after_judge(state) == "research"


def test_route_after_judge_revise_budget_exhausted():
    state = {"verdict": JudgeVerdict(verdict="REVISE"), "attempts": 1}
    with patch("gaia_agent.nodes.get_settings", return_value=SimpleNamespace(max_judge_retries=1)):
        assert route_after_judge(state) == "formatter"


def test_judge_increments_attempts_on_revise():
    structured = MagicMock()
    structured.invoke.return_value = JudgeVerdict(
        verdict="REVISE", feedback="wrong format", missing=["units"]
    )
    with patch("gaia_agent.nodes.get_structured_llm", return_value=structured):
        out = judge({"question": "q", "candidate": None, "attempts": 0})
    assert out["attempts"] == 1
    assert out["verdict"].verdict == "REVISE"
    assert "messages" in out  # feedback injected back into the loop