"""
Tests for webhook_prefix configuration
"""

import os
import pytest
from typing import Any


def _apply_env_overrides_to_config(cfg: dict) -> dict:
    """Apply environment variable overrides to data/config.yaml

    Environment variables should be uppercase and use __ (double underscore)
    to represent nested keys. For example:
    - CONCURRENCY__PIPELINE overrides concurrency.pipeline
    - PLUGIN__RUNTIME_WS_URL overrides plugin.runtime_ws_url

    Arrays and dict types are ignored.

    Args:
        cfg: Configuration dictionary

    Returns:
        Updated configuration dictionary
    """

    def convert_value(value: str, original_value: Any) -> Any:
        """Convert string value to appropriate type based on original value

        Args:
            value: String value from environment variable
            original_value: Original value to infer type from

        Returns:
            Converted value (falls back to string if conversion fails)
        """
        if isinstance(original_value, bool):
            return value.lower() in ('true', '1', 'yes', 'on')
        elif isinstance(original_value, int):
            try:
                return int(value)
            except ValueError:
                # If conversion fails, keep as string (user error, but non-breaking)
                return value
        elif isinstance(original_value, float):
            try:
                return float(value)
            except ValueError:
                # If conversion fails, keep as string (user error, but non-breaking)
                return value
        else:
            return value

    # Process environment variables
    for env_key, env_value in os.environ.items():
        # Check if the environment variable is uppercase and contains __
        if not env_key.isupper():
            continue
        if '__' not in env_key:
            continue

        # Convert environment variable name to config path
        # e.g., CONCURRENCY__PIPELINE -> ['concurrency', 'pipeline']
        keys = [key.lower() for key in env_key.split('__')]

        # Navigate to the target value and validate the path
        current = cfg

        for i, key in enumerate(keys):
            if not isinstance(current, dict) or key not in current:
                break

            if i == len(keys) - 1:
                # At the final key - check if it's a scalar value
                if isinstance(current[key], (dict, list)):
                    # Skip dict and list types
                    pass
                else:
                    # Valid scalar value - convert and set it
                    converted_value = convert_value(env_value, current[key])
                    current[key] = converted_value
            else:
                # Navigate deeper
                current = current[key]

    return cfg


class TestWebhookDisplayPrefix:
    """Test webhook_prefix configuration functionality"""

    def test_default_webhook_prefix(self):
        """Test that the default webhook display prefix is correctly set"""
        cfg = {'api': {'port': 5300, 'webhook_prefix': 'http://127.0.0.1:5300', 'extra_webhook_prefix': ''}}

        # Should have the default value
        assert cfg['api']['webhook_prefix'] == 'http://127.0.0.1:5300'
        assert cfg['api']['extra_webhook_prefix'] == ''

    def test_webhook_prefix_env_override(self):
        """Test overriding webhook_prefix via environment variable"""
        cfg = {'api': {'port': 5300, 'webhook_prefix': 'http://127.0.0.1:5300', 'extra_webhook_prefix': ''}}

        # Set environment variable
        os.environ['API__WEBHOOK_PREFIX'] = 'https://example.com:8080'

        result = _apply_env_overrides_to_config(cfg)

        assert result['api']['webhook_prefix'] == 'https://example.com:8080'

        # Cleanup
        del os.environ['API__WEBHOOK_PREFIX']

    def test_webhook_prefix_with_custom_domain(self):
        """Test webhook_prefix with custom domain"""
        cfg = {'api': {'port': 5300, 'webhook_prefix': 'http://127.0.0.1:5300', 'extra_webhook_prefix': ''}}

        # Set to a custom domain
        os.environ['API__WEBHOOK_PREFIX'] = 'https://bot.mycompany.com'

        result = _apply_env_overrides_to_config(cfg)

        assert result['api']['webhook_prefix'] == 'https://bot.mycompany.com'

        # Cleanup
        del os.environ['API__WEBHOOK_PREFIX']

    def test_webhook_prefix_with_subdirectory(self):
        """Test webhook_prefix with subdirectory path"""
        cfg = {'api': {'port': 5300, 'webhook_prefix': 'http://127.0.0.1:5300', 'extra_webhook_prefix': ''}}

        # Set to a URL with subdirectory
        os.environ['API__WEBHOOK_PREFIX'] = 'https://example.com/langbot'

        result = _apply_env_overrides_to_config(cfg)

        assert result['api']['webhook_prefix'] == 'https://example.com/langbot'

        # Cleanup
        del os.environ['API__WEBHOOK_PREFIX']

    def test_extra_webhook_prefix_default_empty(self):
        """Test that extra_webhook_prefix defaults to empty string"""
        cfg = {'api': {'port': 5300, 'webhook_prefix': 'http://127.0.0.1:5300', 'extra_webhook_prefix': ''}}

        bot_uuid = 'test-bot-uuid'
        webhook_prefix = cfg['api'].get('webhook_prefix', 'http://127.0.0.1:5300')
        extra_webhook_prefix = cfg['api'].get('extra_webhook_prefix', '')
        webhook_url = f'/bots/{bot_uuid}'

        assert f'{webhook_prefix}{webhook_url}' == 'http://127.0.0.1:5300/bots/test-bot-uuid'
        # extra should be empty when not configured
        assert extra_webhook_prefix == ''

    def test_extra_webhook_prefix_env_override(self):
        """Test overriding extra_webhook_prefix via environment variable"""
        cfg = {'api': {'port': 5300, 'webhook_prefix': 'http://127.0.0.1:5300', 'extra_webhook_prefix': ''}}

        os.environ['API__EXTRA_WEBHOOK_PREFIX'] = 'https://extra.example.com'

        result = _apply_env_overrides_to_config(cfg)

        assert result['api']['extra_webhook_prefix'] == 'https://extra.example.com'

        bot_uuid = 'test-bot-uuid'
        extra_prefix = result['api']['extra_webhook_prefix']
        webhook_url = f'/bots/{bot_uuid}'
        assert f'{extra_prefix}{webhook_url}' == 'https://extra.example.com/bots/test-bot-uuid'

        # Cleanup
        del os.environ['API__EXTRA_WEBHOOK_PREFIX']


if __name__ == '__main__':
    pytest.main([__file__, '-v'])