from datetime import UTC, datetime, timedelta

from backend.app.connectors import gitea_actions
from backend.app.connectors.gitea_actions import GiteaActionsConnector
from backend.app.core.config import settings


def _configure(monkeypatch) -> GiteaActionsConnector:
    monkeypatch.setitem(settings.apis, "GITEA_URL", "https://gitea.test")
    monkeypatch.setitem(settings.apis, "GITEA_ADMIN_TOKEN", "fixture-secret")
    monkeypatch.setitem(
        settings.apis,
        "GITEA_RUNNER_TARGETS_JSON",
        '{"linux-validation":"itworx-validation-runner-2",'
        '"mcp-validation":"itworx-security-runner"}',
    )
    monkeypatch.setattr(gitea_actions, "_CACHE", None)
    return GiteaActionsConnector()


def _requests(created_at: str, *, busy: bool = False):
    def fake_request(path, params=None):
        params = params or {}
        if path.endswith("/runners"):
            return {
                "total_count": 1,
                "runners": [
                    {
                        "id": 17,
                        "name": "validation-secondary",
                        "status": "online",
                        "busy": busy,
                        "disabled": False,
                        "labels": ["linux-validation", "ubuntu-latest"],
                    }
                ],
            }
        if params.get("status") == "queued":
            return {
                "total_count": 1,
                "jobs": [
                    {
                        "id": 91,
                        "name": "full",
                        "status": "queued",
                        "created_at": created_at,
                        "labels": ["linux-validation"],
                    }
                ],
            }
        return {"total_count": 0, "jobs": []}

    return fake_request


def test_old_unassigned_job_on_idle_matching_runner_is_recovery_candidate(monkeypatch):
    connector = _configure(monkeypatch)
    created_at = (datetime.now(UTC) - timedelta(minutes=12)).isoformat()
    monkeypatch.setattr(connector, "_request", _requests(created_at))

    result = connector.snapshot(refresh=True)

    assert result["severity"] == "critical"
    assert result["queue"]["items"][0]["reason"] == "awaiting_scheduler_assignment"
    assert result["queue"]["staleAssignmentRunnerLabels"] == ["linux-validation"]
    assert result["recommendedAction"] == {
        "intent": "runner.recover",
        "target": "itworx-validation-runner-2",
        "requiresApproval": False,
        "autoExecute": True,
        "reason": "Gitea Actions scheduler left a compatible idle runner unassigned for at least ten minutes.",
        "evidence": {
            "jobId": 91,
            "label": "linux-validation",
            "minimumAgeSeconds": 600,
        },
    }


def test_recent_unassigned_job_does_not_trigger_recovery(monkeypatch):
    connector = _configure(monkeypatch)
    created_at = (datetime.now(UTC) - timedelta(minutes=2)).isoformat()
    monkeypatch.setattr(connector, "_request", _requests(created_at))

    result = connector.snapshot(refresh=True)

    assert result["queue"]["items"][0]["reason"] == "awaiting_scheduler_assignment"
    assert result["queue"]["staleAssignmentRunnerLabels"] == []
    assert result["recommendedAction"] is None


def test_busy_matching_runner_is_never_restarted_for_waiting_queue(monkeypatch):
    connector = _configure(monkeypatch)
    created_at = (datetime.now(UTC) - timedelta(minutes=12)).isoformat()
    monkeypatch.setattr(connector, "_request", _requests(created_at, busy=True))

    result = connector.snapshot(refresh=True)

    assert result["queue"]["items"][0]["reason"] == "all_matching_runners_are_busy"
    assert result["queue"]["staleAssignmentRunnerLabels"] == []
    assert result["recommendedAction"] is None