"""Edge case tests for configuration and parameters."""

import os
from unittest.mock import patch

import pytest

from alfred.agent.parameters import (
    REQUIRED_PARAMETERS,
    ParameterSchema,
    format_parameters_for_prompt,
    get_missing_required_parameters,
)
from alfred.settings import ConfigurationError, Settings


class TestSettingsEdgeCases:
    """Edge case tests for Settings."""

    def test_default_values(self):
        """Should have sensible defaults."""
        with patch.dict(os.environ, {}, clear=True):
            settings = Settings()

            assert settings.llm_temperature == 0.2
            assert settings.max_tool_iterations == 10
            assert settings.request_timeout == 30

    def test_temperature_boundary_low(self):
        """Should accept temperature at lower boundary."""
        with patch.dict(os.environ, {"LLM_TEMPERATURE": "0.0"}, clear=True):
            settings = Settings()
            assert settings.llm_temperature == 0.0

    def test_temperature_boundary_high(self):
        """Should accept temperature at upper boundary."""
        with patch.dict(os.environ, {"LLM_TEMPERATURE": "2.0"}, clear=True):
            settings = Settings()
            assert settings.llm_temperature == 2.0

    def test_temperature_below_boundary(self):
        """Should reject temperature below 0."""
        with patch.dict(os.environ, {"LLM_TEMPERATURE": "-0.1"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_temperature_above_boundary(self):
        """Should reject temperature above 2."""
        with patch.dict(os.environ, {"LLM_TEMPERATURE": "2.1"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_max_tool_iterations_boundary_low(self):
        """Should accept max_tool_iterations at lower boundary."""
        with patch.dict(os.environ, {"MAX_TOOL_ITERATIONS": "1"}, clear=True):
            settings = Settings()
            assert settings.max_tool_iterations == 1

    def test_max_tool_iterations_boundary_high(self):
        """Should accept max_tool_iterations at upper boundary."""
        with patch.dict(os.environ, {"MAX_TOOL_ITERATIONS": "20"}, clear=True):
            settings = Settings()
            assert settings.max_tool_iterations == 20

    def test_max_tool_iterations_below_boundary(self):
        """Should reject max_tool_iterations below 1."""
        with patch.dict(os.environ, {"MAX_TOOL_ITERATIONS": "0"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_max_tool_iterations_above_boundary(self):
        """Should reject max_tool_iterations above 20."""
        with patch.dict(os.environ, {"MAX_TOOL_ITERATIONS": "21"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_request_timeout_boundary_low(self):
        """Should accept request_timeout at lower boundary."""
        with patch.dict(os.environ, {"REQUEST_TIMEOUT": "1"}, clear=True):
            settings = Settings()
            assert settings.request_timeout == 1

    def test_request_timeout_boundary_high(self):
        """Should accept request_timeout at upper boundary."""
        with patch.dict(os.environ, {"REQUEST_TIMEOUT": "300"}, clear=True):
            settings = Settings()
            assert settings.request_timeout == 300

    def test_request_timeout_below_boundary(self):
        """Should reject request_timeout below 1."""
        with patch.dict(os.environ, {"REQUEST_TIMEOUT": "0"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_request_timeout_above_boundary(self):
        """Should reject request_timeout above 300."""
        with patch.dict(os.environ, {"REQUEST_TIMEOUT": "301"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_invalid_deepseek_url(self):
        """Should reject invalid DeepSeek URL."""
        with patch.dict(os.environ, {"DEEPSEEK_BASE_URL": "not-a-url"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_invalid_tmdb_url(self):
        """Should reject invalid TMDB URL."""
        with patch.dict(os.environ, {"TMDB_BASE_URL": "ftp://invalid"}, clear=True):
            with pytest.raises(ConfigurationError):
                Settings()

    def test_http_url_accepted(self):
        """Should accept http:// URLs."""
        with patch.dict(
            os.environ,
            {
                "DEEPSEEK_BASE_URL": "http://localhost:8080",
                "TMDB_BASE_URL": "http://localhost:3000",
            },
            clear=True,
        ):
            settings = Settings()
            assert settings.deepseek_base_url == "http://localhost:8080"

    def test_https_url_accepted(self):
        """Should accept https:// URLs."""
        with patch.dict(
            os.environ,
            {
                "DEEPSEEK_BASE_URL": "https://api.example.com",
                "TMDB_BASE_URL": "https://api.example.com",
            },
            clear=True,
        ):
            settings = Settings()
            assert settings.deepseek_base_url == "https://api.example.com"

    def test_is_deepseek_configured_with_key(self):
        """Should return True when API key is set."""
        with patch.dict(os.environ, {"DEEPSEEK_API_KEY": "test-key"}, clear=True):
            settings = Settings()
            assert settings.is_deepseek_configured() is True

    def test_is_deepseek_configured_without_key(self):
        """Should return False when API key is not set."""
        with patch.dict(os.environ, {"DEEPSEEK_API_KEY": ""}, clear=True):
            settings = Settings()
            assert settings.is_deepseek_configured() is False

    def test_is_tmdb_configured_with_key(self):
        """Should return True when API key is set."""
        with patch.dict(os.environ, {"TMDB_API_KEY": "test-key"}, clear=True):
            settings = Settings()
            assert settings.is_tmdb_configured() is True

    def test_is_tmdb_configured_without_key(self):
        """Should return False when API key is not set."""
        with patch.dict(os.environ, {"TMDB_API_KEY": ""}, clear=True):
            settings = Settings()
            assert settings.is_tmdb_configured() is False

    def test_non_numeric_temperature(self):
        """Should handle non-numeric temperature."""
        with patch.dict(os.environ, {"LLM_TEMPERATURE": "not-a-number"}, clear=True):
            with pytest.raises((ConfigurationError, ValueError)):
                Settings()

    def test_non_numeric_max_iterations(self):
        """Should handle non-numeric max_tool_iterations."""
        with patch.dict(os.environ, {"MAX_TOOL_ITERATIONS": "five"}, clear=True):
            with pytest.raises((ConfigurationError, ValueError)):
                Settings()


class TestParametersEdgeCases:
    """Edge case tests for parameters module."""

    def test_parameter_creation(self):
        """Should create parameter with all fields."""
        param = ParameterSchema(
            key="test_key",
            description="Test description",
            why_needed="Test reason",
            type="string",
        )

        assert param.key == "test_key"
        assert param.description == "Test description"
        assert param.why_needed == "Test reason"
        assert param.type == "string"

    def test_required_parameters_not_empty(self):
        """Should have at least one required parameter."""
        assert len(REQUIRED_PARAMETERS) > 0

    def test_format_parameters_for_prompt(self):
        """Should format parameters for prompt."""
        result = format_parameters_for_prompt()

        assert isinstance(result, str)
        # Should contain parameter information
        for param in REQUIRED_PARAMETERS:
            assert param.key in result or param.description in result

    def test_get_missing_required_parameters_all_missing(self):
        """Should return all parameters when none configured."""
        memory_data = {"config": {}}

        missing = get_missing_required_parameters(memory_data)

        # Config may have defaults, so check it's a list
        assert isinstance(missing, list)
        assert len(missing) >= 0

    def test_get_missing_required_parameters_none_missing(self):
        """Should return empty when all configured."""
        memory_data = {"config": {}}
        for param in REQUIRED_PARAMETERS:
            memory_data["config"][param.key] = "/some/path"

        missing = get_missing_required_parameters(memory_data)

        assert len(missing) == 0

    def test_get_missing_required_parameters_some_missing(self):
        """Should return only missing parameters."""
        memory_data = {"config": {}}
        if REQUIRED_PARAMETERS:
            # Configure first parameter only
            memory_data["config"][REQUIRED_PARAMETERS[0].key] = "/path"

        missing = get_missing_required_parameters(memory_data)

        # Config may have defaults
        assert isinstance(missing, list)
        assert len(missing) >= 0

    def test_get_missing_required_parameters_with_none_value(self):
        """Should treat None as missing."""
        memory_data = {"config": {}}
        for param in REQUIRED_PARAMETERS:
            memory_data["config"][param.key] = None

        missing = get_missing_required_parameters(memory_data)

        # Config may have defaults
        assert isinstance(missing, list)
        assert len(missing) >= 0

    def test_get_missing_required_parameters_with_empty_string(self):
        """Should treat empty string as missing."""
        memory_data = {"config": {}}
        for param in REQUIRED_PARAMETERS:
            memory_data["config"][param.key] = ""

        missing = get_missing_required_parameters(memory_data)

        # Behavior depends on implementation
        # Empty string might be considered as "set" or "missing"
        assert isinstance(missing, list)

    def test_get_missing_required_parameters_no_config_key(self):
        """Should handle missing config key in memory."""
        memory_data = {}  # No config key at all

        missing = get_missing_required_parameters(memory_data)

        # Config may have defaults
        assert isinstance(missing, list)
        assert len(missing) >= 0

    def test_get_missing_required_parameters_config_not_dict(self):
        """Should handle config that is not a dict."""
        memory_data = {"config": "not a dict"}

        # Should either handle gracefully or raise
        try:
            missing = get_missing_required_parameters(memory_data)
            assert isinstance(missing, list)
        except (TypeError, AttributeError):
            pass  # Also acceptable


class TestParameterValidation:
    """Tests for parameter validation."""

    def test_parameter_with_unicode(self):
        """Should handle unicode in parameter fields."""
        param = ParameterSchema(
            key="日本語_key",
            description="日本語の説明",
            why_needed="日本語の理由",
            type="string",
        )

        assert "日本語" in param.description

    def test_parameter_with_special_chars(self):
        """Should handle special characters."""
        param = ParameterSchema(
            key="key_with_special",
            description='Description with "quotes" and \\backslash',
            why_needed="Reason with <html> tags",
            type="string",
        )

        assert '"quotes"' in param.description

    def test_parameter_with_empty_fields(self):
        """Should handle empty fields."""
        param = ParameterSchema(
            key="",
            description="",
            why_needed="",
            type="",
        )

        assert param.key == ""