import json

from tamq.cli import build_parser, main, normalize_argv
import pytest


def test_help_and_version(capsys):
    with pytest.raises(SystemExit) as exc:
        main(["--version"])
    assert exc.value.code == 0
    assert "0.1.0" in capsys.readouterr().out
    assert main([]) == 0
    assert "usage:" in capsys.readouterr().out


def test_attach_delegates_to_tmux(monkeypatch):
    calls = []
    monkeypatch.delenv("TMUX", raising=False)
    monkeypatch.setattr("tamq.cli.subprocess.run", lambda args, check=False: calls.append((args, check)) or type("R", (), {"returncode": 0})())
    assert main(["attach", "--session", "demo"]) == 0
    assert calls == [(["tmux", "attach-session", "-t", "demo"], False)]


def test_attach_switches_client_when_already_in_tmux(monkeypatch):
    calls = []
    monkeypatch.setenv("TMUX", "/tmp/tmux,1,0")
    monkeypatch.setattr("tamq.cli.subprocess.run", lambda args, check=False: calls.append(args) or type("R", (), {"returncode": 0})())
    assert main(["attach"]) == 0
    assert calls == [["tmux", "switch-client", "-t", "tamq"]]


def test_start_parser_supports_command_and_cmd_alias():
    parser = build_parser()
    canonical = parser.parse_args(["start", "--command", "codex --quiet", "a", "b"])
    compatibility = parser.parse_args(["start", "--cmd", "claude", "a"])
    neutral = parser.parse_args(["start", "a", "b"])
    assert canonical.initial_command == "codex --quiet"
    assert canonical.repos == ["a", "b"]
    assert compatibility.initial_command == "claude"
    assert neutral.initial_command is None


def test_repository_first_and_command_first_start_shorthand():
    assert normalize_argv(["flex-auth", "audit-core"]) == [
        "start",
        "flex-auth",
        "audit-core",
    ]
    assert normalize_argv(["--command", "codex", "flex-auth"]) == [
        "start",
        "--command",
        "codex",
        "flex-auth",
    ]
    assert normalize_argv(["status"]) == ["status"]
    assert normalize_argv(["--verbose", "flex-auth", "audit-core"]) == [
        "--verbose",
        "start",
        "flex-auth",
        "audit-core",
    ]


def test_detached_no_service_start_skips_socket_registration(monkeypatch, capsys):
    endpoint = type(
        "Endpoint",
        (),
        {
            "endpoint_id": "tmux-amq-42",
            "instance_key": "tmux-amq-42-boot",
            "pid": 42,
            "session": "tamq",
            "repos": ["a", "b"],
        },
    )()

    class Manager:
        def preflight(self, repos, command):
            assert repos == ["a", "b"]
            assert command is None
            return "plan"

        def ensure_plan(self, plan, *, tap=True):
            assert plan == "plan"
            assert tap is False
            return endpoint

    monkeypatch.setattr("tamq.cli.TmuxManager", Manager)
    monkeypatch.setattr("tamq.cli.preflight_runtime_paths", lambda: None)
    monkeypatch.setattr("tamq.cli.request", lambda payload: pytest.fail("socket request must not run"))
    monkeypatch.setattr("tamq.cli.attach_session", lambda session: pytest.fail("detached start must not attach"))
    assert main(["start", "--detach", "--no-service", "a", "b"]) == 0
    summary = json.loads(capsys.readouterr().out)
    assert summary["service"] is False
    assert summary["messaging"] is False
    assert summary["repos"] == ["a", "b"]


def test_interactive_no_service_start_attaches(monkeypatch, capsys):
    endpoint = type(
        "Endpoint",
        (),
        {
            "endpoint_id": "tmux-amq-42",
            "instance_key": "tmux-amq-42-boot",
            "session": "tamq",
            "repos": ["a"],
        },
    )()

    class Manager:
        def preflight(self, repos, command):
            return "plan"

        def ensure_plan(self, plan, *, tap=True):
            assert tap is False
            return endpoint

    attached = []
    monkeypatch.setattr("tamq.cli.TmuxManager", Manager)
    monkeypatch.setattr("tamq.cli.preflight_runtime_paths", lambda: None)
    monkeypatch.setattr("tamq.cli.attach_session", lambda session: attached.append(session) or 0)
    assert main(["start", "--no-service", "a"]) == 0
    assert attached == ["tamq"]
    assert json.loads(capsys.readouterr().out)["repos"] == ["a"]


def test_registration_failure_rolls_back_created_windows(monkeypatch, capsys):
    endpoint = type(
        "Endpoint",
        (),
        {
            "endpoint_id": "tmux-amq-42",
            "instance_key": "tmux-amq-42-boot",
            "pid": 42,
            "session": "tamq",
            "repos": ["a"],
        },
    )()
    rolled_back = []

    class Manager:
        def preflight(self, repos, command):
            return "plan"

        def ensure_plan(self, plan, *, tap=True):
            assert tap is False
            return endpoint

        def rollback(self, value):
            rolled_back.append(value)

    async def failed_registration(payload):
        return {"ok": False, "error": "denied"}

    monkeypatch.setattr("tamq.cli.TmuxManager", Manager)
    monkeypatch.setattr("tamq.cli.preflight_runtime_paths", lambda: None)
    monkeypatch.setattr("tamq.cli.ensure_manual_service", lambda: True)
    monkeypatch.setattr("tamq.cli.request", failed_registration)
    assert main(["start", "--detach", "a"]) == 1
    assert rolled_back == [endpoint]
    assert "endpoint registration failed: denied" in capsys.readouterr().err


def test_tap_requires_explicit_command_and_service(capsys):
    assert main(["start", "--tap", "a"]) == 2
    assert "--tap requires an explicit --command" in capsys.readouterr().err
    assert main(["start", "--tap", "--no-service", "--command", "sh", "a"]) == 2
    assert "--tap cannot be combined with --no-service" in capsys.readouterr().err