"""Tests for `hermes chat --safe-mode` isolation."""

from __future__ import annotations

import os
import sys
import types

import pytest


_VARS = ("HERMES_SAFE_MODE", "HERMES_IGNORE_USER_CONFIG", "HERMES_IGNORE_RULES")


@pytest.fixture(autouse=True)
def _clean_env(monkeypatch):
    for var in _VARS:
        monkeypatch.delenv(var, raising=False)
    yield
    for var in _VARS:
        os.environ.pop(var, None)


def test_cmd_chat_safe_mode_sets_env_before_startup(monkeypatch):
    import hermes_cli.main as main_mod
    from hermes_cli._parser import build_top_level_parser

    parser, _subparsers, chat_parser = build_top_level_parser()
    chat_parser.set_defaults(func=main_mod.cmd_chat)
    args = parser.parse_args(["chat", "--safe-mode"])
    captured: dict[str, object] = {}
    fake_cli = types.ModuleType("cli")

    def fake_has_provider() -> bool:
        assert os.environ["HERMES_SAFE_MODE"] == "1"
        assert os.environ["HERMES_IGNORE_USER_CONFIG"] == "1"
        assert os.environ["HERMES_IGNORE_RULES"] == "1"
        return True

    def fake_main(**kwargs):
        captured.update(kwargs)

    monkeypatch.setattr(main_mod, "_has_any_provider_configured", fake_has_provider)
    monkeypatch.setattr(main_mod, "_pin_kanban_board_env", lambda: None)
    monkeypatch.setattr(main_mod, "_sync_bundled_skills_for_startup", lambda: None)
    monkeypatch.setattr(main_mod, "_termux_should_prefetch_update_check", lambda: False)
    setattr(fake_cli, "main", fake_main)
    monkeypatch.setitem(sys.modules, "cli", fake_cli)

    main_mod.cmd_chat(args)

    assert captured["ignore_user_config"] is True
    assert captured["ignore_rules"] is True


def test_prepare_agent_startup_applies_safe_mode_before_plugin_discovery(monkeypatch):
    import hermes_cli.main as main_mod

    args = types.SimpleNamespace(command="chat", safe_mode=True, tui=False)
    plugins = types.ModuleType("hermes_cli.plugins")

    def discover_plugins() -> None:
        assert os.environ["HERMES_SAFE_MODE"] == "1"
        assert os.environ["HERMES_IGNORE_USER_CONFIG"] == "1"
        assert os.environ["HERMES_IGNORE_RULES"] == "1"

    setattr(plugins, "discover_plugins", discover_plugins)
    monkeypatch.setitem(sys.modules, "hermes_cli.plugins", plugins)
    monkeypatch.setattr(main_mod, "_should_background_mcp_startup", lambda _args: False)
    monkeypatch.setattr(main_mod, "_command_has_dedicated_mcp_startup", lambda _args: True)

    main_mod._prepare_agent_startup(args)


def test_plugin_discovery_skipped(monkeypatch):
    monkeypatch.setenv("HERMES_SAFE_MODE", "1")
    from hermes_cli.plugins import PluginManager

    mgr = PluginManager()
    called = []
    monkeypatch.setattr(mgr, "_discover_and_load_inner", lambda: called.append(True))

    mgr.discover_and_load()

    assert called == []
    assert mgr._discovered is True
    assert mgr._plugins == {}


def test_plugin_discovery_runs_without_safe_mode(monkeypatch):
    from hermes_cli.plugins import PluginManager

    mgr = PluginManager()
    called = []
    monkeypatch.setattr(mgr, "_discover_and_load_inner", lambda: called.append(True))

    mgr.discover_and_load()

    assert called == [True]


def test_mcp_servers_empty(monkeypatch):
    monkeypatch.setenv("HERMES_SAFE_MODE", "1")
    from tools.mcp_tool import _load_mcp_config

    monkeypatch.setattr(
        "hermes_cli.config.load_config",
        lambda: {"mcp_servers": {"github": {"url": "https://example.com/mcp"}}},
    )

    assert _load_mcp_config() == {}


def test_mcp_servers_load_without_safe_mode(monkeypatch):
    from tools.mcp_tool import _load_mcp_config

    monkeypatch.setattr(
        "hermes_cli.config.load_config",
        lambda: {"mcp_servers": {"github": {"url": "https://example.com/mcp"}}},
    )

    assert "github" in _load_mcp_config()


def test_parser_accepts_safe_mode_on_root_and_chat():
    from hermes_cli._parser import build_top_level_parser

    parser, _subparsers, _chat = build_top_level_parser()

    assert parser.parse_args(["--safe-mode"]).safe_mode is True
    assert parser.parse_args(["chat", "--safe-mode"]).safe_mode is True
    assert parser.parse_args(["chat"]).safe_mode is False


def test_shell_hooks_skipped(monkeypatch):
    monkeypatch.setenv("HERMES_SAFE_MODE", "1")
    from agent.shell_hooks import register_from_config

    cfg = {
        "hooks": {
            "pre_tool_call": [{"command": "echo hooked"}],
        },
        "hooks_auto_accept": True,
    }

    assert register_from_config(cfg, accept_hooks=True) == []


def test_shell_hooks_register_without_safe_mode(monkeypatch):
    import agent.shell_hooks as sh

    cfg = {
        "hooks": {
            "pre_tool_call": [{"command": "echo hooked"}],
        },
        "hooks_auto_accept": True,
    }

    manager = types.SimpleNamespace(_hooks={})
    plugins = types.ModuleType("hermes_cli.plugins")
    setattr(plugins, "get_plugin_manager", lambda: manager)
    setattr(plugins, "VALID_HOOKS", {"pre_tool_call"})
    monkeypatch.setitem(sys.modules, "hermes_cli.plugins", plugins)
    monkeypatch.setattr(sh, "_registered", set())

    registered = sh.register_from_config(cfg, accept_hooks=True)

    assert len(registered) == 1
    assert "pre_tool_call" in manager._hooks