"""
NeuralBridge Adapter for SOAP (Simple Object Access Protocol) APIs.

This adapter provides a standardized interface for interacting with legacy
enterprise systems that expose SOAP web services. It handles the complexities of
WSDL parsing, SOAP envelope creation, and authentication, allowing for seamless
integration within the NeuralBridge ecosystem.

**Configuration (YAML):**

.. code-block:: yaml

    adapters:
      - name: my_legacy_erp
        type: soap
        config:
          wsdl_url: "http://erp.example.com/service?wsdl"
          endpoint: "http://erp.example.com/service"
          username: "api_user"
          password: "secure_password"
          timeout: 30
          soap_version: "1.2"

**Supported Operations:**

- **call**: Executes a specific SOAP operation with given parameters.
- **discover_operations**: Introspects the WSDL to find all available SOAP operations.
- **get_wsdl**: Retrieves the raw WSDL content from the service endpoint.

"""

from __future__ import annotations

import asyncio
from typing import Any

import structlog

from neuralbridge.adapters.base import AdapterResponse, BaseAdapter

logger = structlog.get_logger(__name__)


class SoapAdapter(BaseAdapter):
    """
    Connects to and interacts with SOAP-based web services.

    This adapter is designed for legacy enterprise integrations, providing a
    bridge between modern workflows and older, SOAP-based systems.
    """

    # --- Adapter Metadata ---
    adapter_type: str = "soap"
    category: str = "apis"
    description: str = "Adapter for SOAP API (Legacy Enterprise) integration."
    version: str = "1.0.0"
    supported_operations: list[str] = ["call", "discover_operations", "get_wsdl"]

    def __init__(self, config: dict[str, Any] | None = None) -> None:
        """
        Initializes the SOAP adapter instance.

        Args:
            config: Adapter-specific configuration dictionary.
        """
        super().__init__(config)
        self._is_connected = False

    # --- Abstract Method Implementations ---

    async def _do_connect(self) -> None:
        """
        Establishes a conceptual connection to the SOAP service.

        For this mock adapter, this method simulates validating the WSDL URL
        and endpoint availability without making a real network request.
        """
        logger.info(
            "soap_adapter_connecting",
            wsdl_url=self.config.get("wsdl_url"),
            endpoint=self.config.get("endpoint"),
        )

        if not self.config.get("wsdl_url") or not self.config.get("endpoint"):
            raise ValueError("WSDL URL and endpoint must be configured.")

        # MOCK: In production, this would involve fetching the WSDL and preparing
        # a SOAP client (e.g., using the `zeep` library).
        await asyncio.sleep(0.1)  # Simulate network latency
        self._is_connected = True
        logger.info("soap_adapter_connected", wsdl_url=self.config.get("wsdl_url"))

    async def _do_disconnect(self) -> None:
        """
        Clears the connection state.

        In a real implementation, this would release any resources held by a
        SOAP client library.
        """
        logger.info("soap_adapter_disconnecting", adapter=self.adapter_type)
        self._is_connected = False
        # MOCK: No real resources to release in this mock implementation.
        await asyncio.sleep(0.05)
        logger.info("soap_adapter_disconnected", adapter=self.adapter_type)

    async def _do_execute(self, operation: str, params: dict[str, Any]) -> AdapterResponse:
        """
        Executes a supported SOAP operation.

        Dispatches the call to the appropriate handler based on the operation name.

        Args:
            operation: The name of the operation to execute.
            params: A dictionary of parameters for the operation.

        Returns:
            An AdapterResponse containing the result of the operation.
        """
        if not self._is_connected:
            raise ConnectionError("Adapter is not connected.")

        if operation == "call":
            return await self._execute_call(params)
        elif operation == "discover_operations":
            return await self._execute_discover_operations()
        elif operation == "get_wsdl":
            return await self._execute_get_wsdl()
        else:
            return AdapterResponse(
                success=False, error=f"Unsupported operation: {operation}"
            )

    async def _do_validate_credentials(self) -> dict[str, Any]:
        """
        Simulates validation of SOAP credentials.

        In a real scenario, this might involve a dummy API call to verify
        that the username and password are accepted by the service.

        Returns:
            A dictionary indicating the validation status.
        """
        username = self.config.get("username")
        password = self.config.get("password")

        if not username or not password:
            raise ValueError("Username and password are required for validation.")

        logger.info("soap_validating_credentials", username=username)

        # MOCK: Simulate an authentication check.
        await asyncio.sleep(0.2)

        if username == "api_user" and password == "secure_password":
            logger.info("soap_credentials_valid", username=username)
            return {"status": "ok", "message": "Credentials are valid."}
        else:
            logger.warning("soap_credentials_invalid", username=username)
            raise PermissionError("Invalid username or password.")

    # --- Configuration Schema ---

    def _get_config_schema(self) -> dict[str, Any]:
        """
        Returns the JSON Schema for the SOAP adapter's configuration.

        This schema is used for validation and for generating UI forms in the
        NeuralBridge dashboard.

        Returns:
            A JSON Schema dictionary.
        """
        return {
            "type": "object",
            "properties": {
                "wsdl_url": {
                    "type": "string",
                    "title": "WSDL URL",
                    "description": "The full URL to the SOAP service's WSDL file.",
                    "format": "uri",
                },
                "endpoint": {
                    "type": "string",
                    "title": "Service Endpoint",
                    "description": "The URL where SOAP requests should be sent.",
                    "format": "uri",
                },
                "username": {
                    "type": "string",
                    "title": "Username",
                    "description": "Username for SOAP authentication (e.g., WS-Security).",
                },
                "password": {
                    "type": "string",
                    "title": "Password",
                    "description": "Password for SOAP authentication.",
                    "format": "password",
                },
                "timeout": {
                    "type": "integer",
                    "title": "Timeout (seconds)",
                    "description": "Request timeout in seconds.",
                    "default": 30,
                },
                "soap_version": {
                    "type": "string",
                    "title": "SOAP Version",
                    "description": "The SOAP version to use (e.g., '1.1' or '1.2').",
                    "enum": ["1.1", "1.2"],
                    "default": "1.2",
                },
            },
            "required": ["wsdl_url", "endpoint"],
        }

    # --- Operation-Specific Implementations ---

    async def _execute_call(self, params: dict[str, Any]) -> AdapterResponse:
        """
        Mocks the execution of a SOAP method call.

        Args:
            params: Must contain 'operation_name' and 'operation_params'.

        Returns:
            A mocked SOAP response.
        """
        operation_name = params.get("operation_name")
        if not operation_name:
            return AdapterResponse(success=False, error="'operation_name' is required.")

        # MOCK: In production, this would use a SOAP client to build the XML
        # envelope and make the actual network request.
        logger.info("mock_soap_call", operation=operation_name, params=params)
        await asyncio.sleep(0.3)  # Simulate network call

        # Example of a realistic mock response
        mock_response_body = f"""
        <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
          <soap:Body>
            <{operation_name}Response xmlns="http://erp.example.com/types">
              <Status>Success</Status>
              <TransactionID>TXN-{hash(str(params))}</TransactionID>
            </{operation_name}Response>
          </soap:Body>
        </soap:Envelope>
        """

        return AdapterResponse(
            success=True,
            data={"raw_xml": mock_response_body.strip()},
            metadata={"operation_called": operation_name},
        )

    async def _execute_discover_operations(self) -> AdapterResponse:
        """
        Mocks the discovery of operations from a WSDL file.

        Returns:
            A list of mock SOAP operations.
        """
        # MOCK: In a real implementation, this would parse the WSDL file
        # (fetched via wsdl_url) to extract all operation signatures.
        logger.info("mock_soap_discover", wsdl_url=self.config.get("wsdl_url"))
        await asyncio.sleep(0.15)

        mock_operations = [
            {
                "name": "GetUserDetails",
                "input": {"UserID": "string"},
                "output": {"User": "object"},
            },
            {
                "name": "CreatePurchaseOrder",
                "input": {"Order": "object", "Items": "array"},
                "output": {"OrderID": "string", "Status": "string"},
            },
            {
                "name": "UpdateInventory",
                "input": {"ProductID": "string", "Quantity": "integer"},
                "output": {"Status": "string"},
            },
        ]

        return AdapterResponse(success=True, data=mock_operations)

    async def _execute_get_wsdl(self) -> AdapterResponse:
        """
        Mocks the retrieval of the WSDL file content.

        Returns:
            The raw XML content of a mock WSDL.
        """
        # MOCK: This would typically fetch the content from self.config['wsdl_url']
        logger.info("mock_soap_get_wsdl", wsdl_url=self.config.get("wsdl_url"))
        await asyncio.sleep(0.1)

        mock_wsdl_content = f"""
        <!-- This is a mock WSDL for {self.config.get("wsdl_url")} -->
        <wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
                          xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap12/"
                          targetNamespace="http://erp.example.com/service">
          <wsdl:service name="LegacyERPService">
            <wsdl:port name="LegacyERPPort" binding="tns:LegacyERPBinding">
              <soap:address location="{self.config.get("endpoint")}" />
            </wsdl:port>
          </wsdl:service>
        </wsdl:definitions>
        """
        return AdapterResponse(
            success=True, data={"wsdl_content": mock_wsdl_content.strip()}
        )

