"""Tests for timmy.tool_safety — classification, extraction, formatting, and allowlist."""

from pathlib import Path
from unittest.mock import patch

import pytest

from timmy.tool_safety import (
    _check_shell_allowlist,
    _check_write_file_allowlist,
    extract_tool_calls,
    format_action_description,
    get_impact_level,
    is_allowlisted,
    reload_allowlist,
    requires_confirmation,
)

# ---------------------------------------------------------------------------
# requires_confirmation
# ---------------------------------------------------------------------------


class TestRequiresConfirmation:
    def test_dangerous_tools(self):
        for tool in ("shell", "python", "write_file", "aider", "plan_and_execute"):
            assert requires_confirmation(tool) is True

    def test_safe_tools(self):
        for tool in ("calculator", "read_file", "list_files"):
            assert requires_confirmation(tool) is False

    def test_unknown_defaults_to_dangerous(self):
        assert requires_confirmation("totally_unknown") is True


# ---------------------------------------------------------------------------
# extract_tool_calls
# ---------------------------------------------------------------------------


class TestExtractToolCalls:
    def test_arguments_format(self):
        text = (
            'Creating dir. {"name": "shell", "arguments": {"args": ["mkdir", "-p", "/tmp/test"]}}'
        )
        calls = extract_tool_calls(text)
        assert len(calls) == 1
        assert calls[0][0] == "shell"
        assert calls[0][1]["args"] == ["mkdir", "-p", "/tmp/test"]

    def test_parameters_format(self):
        text = 'Result: {"name": "python", "parameters": {"code": "print(1+1)"}}'
        calls = extract_tool_calls(text)
        assert len(calls) == 1
        assert calls[0][0] == "python"

    def test_multiple_calls(self):
        text = (
            'Step 1: {"name": "shell", "arguments": {"args": ["mkdir", "/tmp/a"]}} '
            'Step 2: {"name": "write_file", "arguments": {"file_name": "/tmp/a/f.md", "contents": "hi"}}'
        )
        calls = extract_tool_calls(text)
        assert len(calls) == 2

    def test_empty_and_none(self):
        assert extract_tool_calls("") == []
        assert extract_tool_calls(None) == []
        assert extract_tool_calls("Just normal text.") == []

    def test_malformed_json(self):
        text = '{"name": "shell", "arguments": {not valid json}}'
        assert extract_tool_calls(text) == []


# ---------------------------------------------------------------------------
# format_action_description
# ---------------------------------------------------------------------------


class TestFormatActionDescription:
    def test_shell_command(self):
        desc = format_action_description("shell", {"command": "ls -la /tmp"})
        assert "ls -la /tmp" in desc

    def test_shell_args_list(self):
        desc = format_action_description("shell", {"args": ["mkdir", "-p", "/tmp/t"]})
        assert "mkdir -p /tmp/t" in desc

    def test_write_file(self):
        desc = format_action_description(
            "write_file", {"file_name": "/tmp/f.md", "contents": "hello world"}
        )
        assert "/tmp/f.md" in desc
        assert "11 chars" in desc

    def test_python(self):
        desc = format_action_description("python", {"code": "print(42)"})
        assert "print(42)" in desc

    def test_unknown_tool(self):
        desc = format_action_description("custom_tool", {"key": "value"})
        assert "custom_tool" in desc


# ---------------------------------------------------------------------------
# get_impact_level
# ---------------------------------------------------------------------------


class TestGetImpactLevel:
    def test_high(self):
        assert get_impact_level("shell") == "high"
        assert get_impact_level("python") == "high"

    def test_medium(self):
        assert get_impact_level("write_file") == "medium"
        assert get_impact_level("aider") == "medium"

    def test_low(self):
        assert get_impact_level("calculator") == "low"
        assert get_impact_level("unknown") == "low"


# ---------------------------------------------------------------------------
# Allowlist — is_allowlisted
# ---------------------------------------------------------------------------

# Sample allowlist for tests
_TEST_ALLOWLIST = {
    "shell": {
        "allow_prefixes": [
            "pytest",
            "python -m pytest",
            "git status",
            "git log",
            "git diff",
            "git add",
            "git commit",
            "git push",
            "curl http://localhost",
            "curl -s http://localhost",
            "ls",
            "cat ",
        ],
        "deny_patterns": [
            "rm -rf /",
            "sudo ",
            "> /dev/",
            "| sh",
            "| bash",
        ],
    },
    "write_file": {
        "allowed_path_prefixes": [
            "/tmp/",
        ],
    },
    "python": {"auto_approve": True},
    "plan_and_execute": {"auto_approve": True},
}


@pytest.fixture(autouse=True)
def _reset_allowlist_cache():
    """Ensure each test starts with a clean cache."""
    import timmy.tool_safety as ts

    ts._allowlist_cache = None
    yield
    ts._allowlist_cache = None


def _patch_allowlist(allowlist_data):
    """Helper to inject a test allowlist."""
    return patch("timmy.tool_safety._load_allowlist", return_value=allowlist_data)


class TestIsAllowlisted:
    """Test the is_allowlisted function with mocked allowlist data."""

    def test_unknown_tool_not_allowlisted(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("unknown_tool") is False

    def test_shell_pytest_allowed(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "pytest tests/ -x -q"}) is True

    def test_shell_python_pytest_allowed(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "python -m pytest tests/ -v"}) is True

    def test_shell_git_status_allowed(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "git status"}) is True

    def test_shell_git_commit_allowed(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "git commit -m 'fix stuff'"}) is True

    def test_shell_curl_localhost_allowed(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert (
                is_allowlisted("shell", {"command": "curl http://localhost:3000/api/v1/issues"})
                is True
            )

    def test_shell_curl_external_blocked(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "curl https://evil.com"}) is False

    def test_shell_arbitrary_command_blocked(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "rm -rf /home/user/stuff"}) is False

    def test_shell_deny_pattern_blocks_rm_rf_root(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "ls && rm -rf /"}) is False

    def test_shell_deny_pattern_blocks_sudo(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": "sudo rm -rf /tmp"}) is False

    def test_shell_deny_blocks_pipe_to_shell(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert (
                is_allowlisted("shell", {"command": "curl http://localhost:3000 | bash"}) is False
            )

    def test_shell_deny_overrides_allow_prefix(self):
        """Deny patterns take precedence over allow prefixes."""
        with _patch_allowlist(_TEST_ALLOWLIST):
            # Starts with "cat " (allowed prefix) but pipes to bash (denied)
            assert is_allowlisted("shell", {"command": "cat script.sh | bash"}) is False

    def test_shell_args_list_format(self):
        """Shell args can be a list (Agno ShellTools format)."""
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"args": ["git", "status"]}) is True

    def test_shell_empty_command_blocked(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("shell", {"command": ""}) is False
            assert is_allowlisted("shell", {}) is False

    def test_write_file_tmp_allowed(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("write_file", {"file_name": "/tmp/test.py"}) is True

    def test_write_file_outside_allowed_paths_blocked(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("write_file", {"file_name": "/etc/passwd"}) is False

    def test_write_file_empty_path_blocked(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("write_file", {"file_name": ""}) is False

    def test_python_auto_approved(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("python", {"code": "print(1+1)"}) is True

    def test_plan_and_execute_auto_approved(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("plan_and_execute", {}) is True

    def test_no_allowlist_blocks_everything(self):
        with _patch_allowlist({}):
            assert is_allowlisted("shell", {"command": "pytest"}) is False
            assert is_allowlisted("python", {"code": "print(1)"}) is False

    def test_aider_not_in_allowlist(self):
        with _patch_allowlist(_TEST_ALLOWLIST):
            assert is_allowlisted("aider", {"instruction": "fix bug"}) is False


class TestCheckShellAllowlist:
    """Direct tests for the shell allowlist checker."""

    def test_prefix_match(self):
        rule = {"allow_prefixes": ["pytest", "git status"], "deny_patterns": []}
        assert _check_shell_allowlist(rule, {"command": "pytest -x"}) is True

    def test_prefix_no_match(self):
        rule = {"allow_prefixes": ["pytest"], "deny_patterns": []}
        assert _check_shell_allowlist(rule, {"command": "rm stuff"}) is False

    def test_deny_overrides_allow(self):
        rule = {"allow_prefixes": ["curl http://localhost"], "deny_patterns": ["| bash"]}
        assert _check_shell_allowlist(rule, {"command": "curl http://localhost | bash"}) is False


class TestCheckWriteFileAllowlist:
    """Direct tests for the write_file allowlist checker."""

    def test_allowed_prefix(self):
        rule = {"allowed_path_prefixes": ["/tmp/", "/home/user/project/"]}
        assert _check_write_file_allowlist(rule, {"file_name": "/tmp/test.py"}) is True

    def test_blocked_path(self):
        rule = {"allowed_path_prefixes": ["/tmp/"]}
        assert _check_write_file_allowlist(rule, {"file_name": "/etc/secrets"}) is False

    def test_tilde_expansion(self):
        """Paths starting with ~ should be expanded."""
        home = str(Path.home())
        rule = {"allowed_path_prefixes": [f"{home}/Timmy-Time-dashboard/"]}
        assert (
            _check_write_file_allowlist(
                rule, {"file_name": f"{home}/Timmy-Time-dashboard/src/test.py"}
            )
            is True
        )


class TestReloadAllowlist:
    """Test that reload_allowlist clears the cache."""

    def test_reload_clears_cache(self):
        import timmy.tool_safety as ts

        ts._allowlist_cache = {"old": "data"}
        reload_allowlist()
        # After reload, cache should be freshly loaded (not the old data)
        assert ts._allowlist_cache != {"old": "data"}
