from __future__ import annotations

from pathlib import Path

import pytest

from sshctl.config.resolver import (
    ResolvedHost,
    _parse_ssh_g_output,
    resolve_all_hosts,
    resolve_host,
)
from sshctl.core.exceptions import ResolverError


def test_resolved_host_namedtuple() -> None:
    host = ResolvedHost(
        alias="server1",
        hostname="10.0.0.1",
        user="admin",
        port=22,
        proxy_jump="gw",
        identity_file="~/.ssh/id_rsa",
        options={"hostname": "10.0.0.1", "user": "admin"},
    )
    assert host.alias == "server1"
    assert host.hostname == "10.0.0.1"
    assert host.port == 22
    assert host.proxy_jump == "gw"


def test_parse_ssh_g_output_basic() -> None:
    text = "hostname 10.0.0.1\nuser admin\nport 2222\n"
    opts = _parse_ssh_g_output(text)
    assert opts["hostname"] == "10.0.0.1"
    assert opts["user"] == "admin"
    assert opts["port"] == "2222"


def test_parse_ssh_g_output_empty() -> None:
    assert _parse_ssh_g_output("") == {}


def test_parse_ssh_g_output_blank_lines() -> None:
    text = "\n\nhostname test\n\n"
    opts = _parse_ssh_g_output(text)
    assert opts == {"hostname": "test"}


def test_parse_ssh_g_output_first_wins() -> None:
    text = "hostname first\nhostname second\n"
    opts = _parse_ssh_g_output(text)
    assert opts["hostname"] == "first"


def test_parse_ssh_g_output_quoted_values() -> None:
    text = 'identityfile "~/.ssh/key"\n'
    opts = _parse_ssh_g_output(text)
    assert opts["identityfile"] == "~/.ssh/key"


def test_parse_ssh_g_output_single_word_line() -> None:
    text = "invalid\nhostname test\n"
    opts = _parse_ssh_g_output(text)
    assert opts == {"hostname": "test"}


def test_resolve_host_ssh_not_found() -> None:
    with pytest.raises(ResolverError, match="Failed to resolve"):
        resolve_host("test", "/nonexistent/config", ssh_bin="ssh-nonexistent")


def test_resolve_all_hosts_empty_config(tmp_path: Path) -> None:
    config_path = tmp_path / "config"
    config_path.write_text("Host *\n  User root\n")
    results = resolve_all_hosts(config_path, ssh_bin="ssh-nonexistent")
    assert results == []


def test_resolve_host_uses_correct_cmd() -> None:
    import subprocess

    def _fake_run(*_args: object, **_kwargs: object) -> object:
        class FakeResult:
            returncode = 0
            stdout = "hostname 10.0.0.1\nuser testuser\nport 2222\nproxyjump jumpbox\n"
            stderr = ""

        return FakeResult()

    original_run = subprocess.run
    subprocess.run = _fake_run  # type: ignore[assignment]
    try:
        host = resolve_host("myserver", "/tmp/fake_config")
        assert host.alias == "myserver"
        assert host.hostname == "10.0.0.1"
        assert host.user == "testuser"
        assert host.port == 2222
        assert host.proxy_jump == "jumpbox"
    finally:
        subprocess.run = original_run