"""Tests for ``ci_orchestrator wait-ready``.

Migrated from Pester ``tests/Wait-VMReady.Tests.ps1`` (now removed).
Preserves the negative cases:

* missing/invalid VMX → command surfaces a backend error path
* never-becomes-ready → exit 2 with timeout message
* IP override skips the get_ip polling step
"""

from __future__ import annotations

from typing import Any

import pytest
from click.testing import CliRunner

import ci_orchestrator.commands.wait as wait_module
from ci_orchestrator.__main__ import cli
from ci_orchestrator.backends.protocol import VmHandle
from ci_orchestrator.credentials import Credential


class _FakeBackend:
    def __init__(self, *, running: bool = True, ip: str | None = "10.0.0.42") -> None:
        self._running = running
        self._ip = ip
        self.running_calls = 0

    def is_running(self, _h: VmHandle) -> bool:
        self.running_calls += 1
        return self._running

    def get_ip(self, _h: VmHandle, timeout: float = 0.0) -> str | None:
        return self._ip


class _FakeTransport:
    def __init__(self, *_a: Any, **_kw: Any) -> None:
        pass

    def __enter__(self) -> _FakeTransport:
        return self

    def __exit__(self, *_e: object) -> None:
        pass

    def is_ready(self) -> bool:
        return True


class _BrokenTransport(_FakeTransport):
    def is_ready(self) -> bool:
        return False


class _FakeStore:
    def get(self, _target: str) -> Credential:
        return Credential("user", "pwd")


def _patch(monkeypatch: pytest.MonkeyPatch, backend: _FakeBackend, transport: type = _FakeTransport) -> None:
    monkeypatch.setattr(wait_module, "load_backend", lambda _cfg: backend)
    monkeypatch.setattr(wait_module, "KeyringCredentialStore", lambda: _FakeStore())
    monkeypatch.setattr(wait_module, "WinRmTransport", transport)
    monkeypatch.setattr(wait_module, "SshTransport", transport)
    monkeypatch.setattr(wait_module.time, "sleep", lambda _s: None)


# ── happy paths ────────────────────────────────────────────────────────────


def test_wait_ready_windows_via_transport_alias(monkeypatch: pytest.MonkeyPatch) -> None:
    """``--transport WinRM`` is a PS-shim alias of ``--guest-os windows``."""
    _patch(monkeypatch, _FakeBackend())
    result = CliRunner().invoke(
        cli,
        ["wait-ready", "--vmx", "x.vmx", "--transport", "WinRM", "--timeout", "1"],
    )
    assert result.exit_code == 0, result.output
    assert "WinRM ready" in result.output


def test_wait_ready_skip_ping_is_no_op(monkeypatch: pytest.MonkeyPatch) -> None:
    _patch(monkeypatch, _FakeBackend())
    result = CliRunner().invoke(
        cli,
        ["wait-ready", "--vmx", "x.vmx", "--skip-ping", "--timeout", "1"],
    )
    assert result.exit_code == 0, result.output


def test_wait_ready_ip_override_skips_get_ip(monkeypatch: pytest.MonkeyPatch) -> None:
    """When --ip-address is provided, the backend is not polled for an IP."""
    backend = _FakeBackend(running=True, ip=None)  # would time out at IP step
    _patch(monkeypatch, backend)
    result = CliRunner().invoke(
        cli,
        [
            "wait-ready",
            "--vmx",
            "x.vmx",
            "--ip-address",
            "10.0.0.55",
            "--timeout",
            "1",
        ],
    )
    assert result.exit_code == 0, result.output
    assert "10.0.0.55" in result.output


def test_wait_ready_linux_via_ssh_alias(monkeypatch: pytest.MonkeyPatch) -> None:
    _patch(monkeypatch, _FakeBackend())
    result = CliRunner().invoke(
        cli,
        ["wait-ready", "--vmx", "x.vmx", "--transport", "SSH", "--timeout", "1"],
    )
    assert result.exit_code == 0, result.output
    assert "SSH ready" in result.output


# ── failure paths (Pester migration) ───────────────────────────────────────


def test_wait_ready_timeout_when_vm_never_running(monkeypatch: pytest.MonkeyPatch) -> None:
    _patch(monkeypatch, _FakeBackend(running=False))
    result = CliRunner().invoke(
        cli,
        [
            "wait-ready",
            "--vmx",
            "x.vmx",
            "--timeout",
            "0.01",
            "--poll-interval",
            "0.001",
        ],
    )
    assert result.exit_code == 2
    assert "timeout waiting for VM" in result.output


def test_wait_ready_timeout_no_ip(monkeypatch: pytest.MonkeyPatch) -> None:
    _patch(monkeypatch, _FakeBackend(running=True, ip=None))
    result = CliRunner().invoke(
        cli,
        [
            "wait-ready",
            "--vmx",
            "x.vmx",
            "--timeout",
            "0.01",
            "--poll-interval",
            "0.001",
        ],
    )
    assert result.exit_code == 3
    assert "timeout waiting for guest IP" in result.output


def test_wait_ready_timeout_transport_never_ready(monkeypatch: pytest.MonkeyPatch) -> None:
    _patch(monkeypatch, _FakeBackend(), transport=_BrokenTransport)
    result = CliRunner().invoke(
        cli,
        [
            "wait-ready",
            "--vmx",
            "x.vmx",
            "--ip-address",
            "10.0.0.55",
            "--timeout",
            "0.01",
            "--poll-interval",
            "0.001",
        ],
    )
    assert result.exit_code == 4
    assert "transport to be ready" in result.output


def test_wait_ready_invalid_transport_value(monkeypatch: pytest.MonkeyPatch) -> None:
    _patch(monkeypatch, _FakeBackend())
    result = CliRunner().invoke(
        cli,
        ["wait-ready", "--vmx", "x.vmx", "--transport", "bogus"],
    )
    assert result.exit_code != 0
    assert "Unknown" in result.output or "bogus" in result.output