import asyncio
import logging
import os
import stat

from hbd.client.plugins.nagios_runner import (
    NagiosRunnerPlugin,
    NAGIOS_OK,
    NAGIOS_WARNING,
    NAGIOS_CRITICAL,
    NAGIOS_UNKNOWN,
)


def test_no_commands_sets_skip_reason():
    plugin = NagiosRunnerPlugin(config={"commands": []})
    result = asyncio.run(plugin.initialize())
    assert result is False
    assert plugin.skip_reason is not None
    assert "nagios_runner.commands" in plugin.skip_reason


def test_stderr_used_when_stdout_empty(tmp_path):
    script = tmp_path / "check_err.sh"
    script.write_text("#!/bin/sh\necho 'error from stderr' >&2\nexit 2\n")
    script.chmod(script.stat().st_mode | stat.S_IEXEC)

    config = {"commands": [{"name": "t", "command": str(script)}], "timeout": 5}
    plugin = NagiosRunnerPlugin(config=config)
    asyncio.run(plugin.initialize())
    data = asyncio.run(plugin._collect_metrics())

    assert "error from stderr" in data["t_output"]
    assert data["t_status_code"] == NAGIOS_CRITICAL


def test_stderr_appended_when_both_present(tmp_path):
    script = tmp_path / "check_both.sh"
    script.write_text("#!/bin/sh\necho 'OK - all good'\necho 'extra detail' >&2\nexit 0\n")
    script.chmod(script.stat().st_mode | stat.S_IEXEC)

    config = {"commands": [{"name": "t", "command": str(script)}], "timeout": 5}
    plugin = NagiosRunnerPlugin(config=config)
    asyncio.run(plugin.initialize())
    data = asyncio.run(plugin._collect_metrics())

    assert "OK - all good" in data["t_output"]
    assert "extra detail" in data["t_output"]
    assert data["t_status_code"] == NAGIOS_OK


def test_negative_returncode_maps_to_unknown():
    # kill -9 $$ kills the shell itself; asyncio sees returncode -9
    config = {"commands": [{"name": "t", "command": "kill -9 $$"}], "timeout": 5}
    plugin = NagiosRunnerPlugin(config=config)
    asyncio.run(plugin.initialize())
    data = asyncio.run(plugin._collect_metrics())

    assert data["t_status_code"] == NAGIOS_UNKNOWN
    assert "signal" in data["t_output"].lower()


def test_absolute_path_not_found_warns(caplog):
    fake_cmd = "/nonexistent_hbc_test_path/check_something"
    config = {"commands": [{"name": "t", "command": fake_cmd}]}
    plugin = NagiosRunnerPlugin(config=config)

    with caplog.at_level(logging.WARNING, logger="plugin.nagios_runner"):
        asyncio.run(plugin.initialize())

    assert any("not found" in r.message for r in caplog.records)


def test_absolute_path_not_executable_warns(caplog, tmp_path):
    non_exec = tmp_path / "check_test"
    non_exec.write_text("#!/bin/sh\necho OK\n")
    non_exec.chmod(0o644)  # readable but not executable

    config = {"commands": [{"name": "t", "command": str(non_exec)}]}
    plugin = NagiosRunnerPlugin(config=config)

    with caplog.at_level(logging.WARNING, logger="plugin.nagios_runner"):
        asyncio.run(plugin.initialize())

    assert any("not executable" in r.message for r in caplog.records)


def test_relative_path_not_checked(caplog):
    # Relative paths (resolved via PATH) must not generate warnings
    config = {"commands": [{"name": "t", "command": "echo OK"}]}
    plugin = NagiosRunnerPlugin(config=config)

    with caplog.at_level(logging.WARNING, logger="plugin.nagios_runner"):
        asyncio.run(plugin.initialize())

    assert not any(
        "not found" in r.message or "not executable" in r.message
        for r in caplog.records
    )