"""Tests for the API CLI command (server launch wiring)."""

from unittest.mock import patch

from click.testing import CliRunner

from meshcore_hub.api.cli import api


def test_api_default_runs_single_process():
    """With the default worker count, the app object is passed directly and no
    worker/factory options are used."""
    runner = CliRunner()
    with patch("uvicorn.run") as mock_run:
        result = runner.invoke(api, [], catch_exceptions=False)

    assert result.exit_code == 0
    assert mock_run.call_count == 1
    args, kwargs = mock_run.call_args
    # Single-process path passes the built app object, not an import string.
    assert not isinstance(args[0], str)
    assert "workers" not in kwargs


def test_api_workers_uses_env_factory_import_string():
    """workers > 1 launches uvicorn against the env-driven factory by import
    string with the requested worker count."""
    runner = CliRunner()
    with patch("uvicorn.run") as mock_run:
        result = runner.invoke(api, ["--workers", "3"], catch_exceptions=False)

    assert result.exit_code == 0
    args, kwargs = mock_run.call_args
    assert args[0] == "meshcore_hub.api.app:create_app_from_env"
    assert kwargs["workers"] == 3
    assert kwargs["factory"] is True


def test_api_workers_from_env_var():
    """API_WORKERS env var drives the worker count (the Docker path)."""
    runner = CliRunner()
    with patch("uvicorn.run") as mock_run:
        result = runner.invoke(
            api, [], env={"API_WORKERS": "2"}, catch_exceptions=False
        )

    assert result.exit_code == 0
    _, kwargs = mock_run.call_args
    assert kwargs["workers"] == 2