# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
"""
Node Type Registry for automation2 - merges static definitions with dynamic I/O nodes from methodDiscovery.
"""

import logging
from typing import Dict, List, Any, Optional

from modules.features.automation2.nodeDefinitions import STATIC_NODE_TYPES

logger = logging.getLogger(__name__)

# Short method names that map to I/O node category display
METHOD_LABELS = {
    "outlook": {"en": "Outlook", "de": "Outlook", "fr": "Outlook"},
    "sharepoint": {"en": "SharePoint", "de": "SharePoint", "fr": "SharePoint"},
    "context": {"en": "Context", "de": "Kontext", "fr": "Contexte"},
    "ai": {"en": "AI", "de": "KI", "fr": "IA"},
    "trustee": {"en": "Trustee", "de": "Trustee", "fr": "Trustee"},
    "jira": {"en": "Jira", "de": "Jira", "fr": "Jira"},
    "chatbot": {"en": "Chatbot", "de": "Chatbot", "fr": "Chatbot"},
}


def _actionNameToLabel(actionName: str) -> str:
    """Convert camelCase actionName to readable label."""
    import re
    parts = re.sub(r"([A-Z])", r" \1", actionName).strip().split()
    return " ".join(p.capitalize() for p in parts) if parts else actionName


def _buildIoNodeFromAction(
    shortMethod: str,
    actionName: str,
    actionDef: Dict[str, Any],
    language: str = "en",
) -> Dict[str, Any]:
    """Build a single I/O node definition from a method action."""
    lang = language if language in ("en", "de", "fr") else "en"
    methodLabel = METHOD_LABELS.get(shortMethod, {}).get(lang, shortMethod)
    actionLabel = _actionNameToLabel(actionName)
    nodeId = f"io.{shortMethod}.{actionName}"
    nodeLabel = {l: f"{METHOD_LABELS.get(shortMethod, {}).get(l, shortMethod)} - {_actionNameToLabel(actionName)}" for l in ("en", "de", "fr")}

    parameters = []
    paramDefs = actionDef.get("parameters", {})
    for paramName, paramInfo in paramDefs.items():
        if isinstance(paramInfo, dict):
            p = {
                "name": paramName,
                "type": paramInfo.get("type", "str"),
                "required": paramInfo.get("required", False),
                "description": paramInfo.get("description", ""),
            }
            if paramInfo.get("default") is not None:
                p["default"] = paramInfo["default"]
            parameters.append(p)
        else:
            parameters.append({
                "name": paramName,
                "type": "str",
                "required": False,
                "description": str(paramInfo),
            })

    return {
        "id": nodeId,
        "category": "io",
        "label": nodeLabel,
        "description": actionDef.get("description") or nodeLabel,
        "parameters": parameters,
        "inputs": 1,
        "outputs": 1,
        "executor": "io",
        "meta": {"icon": "mdi-connection", "color": "#00BCD4", "method": shortMethod, "action": actionName},
    }


def getIoNodesFromMethods(methods: Dict[str, Any], language: str = "en") -> List[Dict[str, Any]]:
    """
    Build I/O node types from methodDiscovery.methods.
    methods: { methodName: { instance, actions: { actionName: { description, parameters, method } } } }
    Returns list of node definitions for io.{shortMethod}.{actionName}.
    """
    ioNodes = []
    processed = set()

    for methodName, methodInfo in methods.items():
        if not methodName.startswith("Method"):
            continue
        shortMethod = methodName.replace("Method", "").lower()
        if shortMethod in processed:
            continue
        processed.add(shortMethod)

        methodInstance = methodInfo.get("instance")
        if not methodInstance:
            continue

        actions = methodInstance.actions
        for actionName, actionDef in actions.items():
            if not isinstance(actionDef, dict):
                continue
            try:
                node = _buildIoNodeFromAction(shortMethod, actionName, actionDef, language)
                ioNodes.append(node)
            except Exception as e:
                logger.warning(f"Failed to build I/O node io.{shortMethod}.{actionName}: {e}")
                continue

    return ioNodes


def getNodeTypes(
    services: Any,
    language: str = "en",
) -> List[Dict[str, Any]]:
    """
    Return merged node types: static (trigger, flow, data) + dynamic I/O nodes from methodDiscovery.
    services: Hub from getAutomation2Services (needed for discoverMethods + RBAC-filtered actions).
    """
    from modules.workflows.processing.shared.methodDiscovery import discoverMethods, methods

    discoverMethods(services)

    static = list(STATIC_NODE_TYPES)
    ioNodes = getIoNodesFromMethods(methods, language)
    return static + ioNodes


def _localizeNode(node: Dict[str, Any], language: str) -> Dict[str, Any]:
    """Apply language to label/description/parameters."""
    lang = language if language in ("en", "de", "fr") else "en"
    out = dict(node)
    if isinstance(node.get("label"), dict):
        out["label"] = node["label"].get(lang, node["label"].get("en", str(node["label"])))
    if isinstance(node.get("description"), dict):
        out["description"] = node["description"].get(lang, node["description"].get("en", str(node["description"])))
    params = []
    for p in node.get("parameters", []):
        pc = dict(p)
        if isinstance(p.get("description"), dict):
            pc["description"] = p["description"].get(lang, p["description"].get("en", str(p.get("description", ""))))
        params.append(pc)
    out["parameters"] = params
    return out


def getNodeTypesForApi(
    services: Any,
    language: str = "en",
) -> Dict[str, Any]:
    """
    API-ready response: nodeTypes with localized strings, plus categories list.
    """
    nodes = getNodeTypes(services, language)
    localized = [_localizeNode(n, language) for n in nodes]
    categories = [
        {"id": "trigger", "label": {"en": "Trigger", "de": "Trigger", "fr": "Déclencheur"}},
        {"id": "input", "label": {"en": "Input/Human", "de": "Eingabe/Mensch", "fr": "Entrée/Humain"}},
        {"id": "flow", "label": {"en": "Flow", "de": "Ablauf", "fr": "Flux"}},
        {"id": "data", "label": {"en": "Data", "de": "Daten", "fr": "Données"}},
        {"id": "io", "label": {"en": "I/O", "de": "E/A", "fr": "E/S"}},
    ]
    return {"nodeTypes": localized, "categories": categories}