# Copyright (c) 2025 Patrick Motsch
# Action node executor - maps ai.*, email.*, sharepoint.*, clickup.*, file.*, trustee.* to method actions.
#
# Typed Port System: no heuristic merging. Uses INPUT_EXTRACTORS for wire-handover,
# DataRef for explicit parameter mapping, and _normalizeToSchema for output normalization.

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

from modules.features.graphicalEditor.portTypes import (
    INPUT_EXTRACTORS,
    _normalizeToSchema,
    _normalizeError,
    _unwrapTransit,
)

logger = logging.getLogger(__name__)

_USER_CONNECTION_ID_RE = re.compile(
    r"^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
    re.IGNORECASE,
)


def _isUserConnectionId(val: Any) -> bool:
    if val is None or isinstance(val, (dict, list)):
        return False
    s = str(val).strip()
    return bool(_USER_CONNECTION_ID_RE.match(s))


def _getNodeDefinition(nodeType: str) -> Optional[Dict[str, Any]]:
    """Get node definition by type id."""
    from modules.features.graphicalEditor.nodeDefinitions import STATIC_NODE_TYPES
    for node in STATIC_NODE_TYPES:
        if node.get("id") == nodeType:
            return node
    return None


def _resolveConnectionIdToReference(chatService, connectionId: str, services=None) -> Optional[str]:
    """
    Resolve connectionId (UserConnection.id) to connectionReference format.
    connectionReference format: connection:{authority}:{externalUsername}
    """
    if not connectionId:
        return None
    if isinstance(connectionId, str) and connectionId.startswith("connection:"):
        return connectionId
    if chatService:
        try:
            connections = chatService.getUserConnections()
            for c in connections or []:
                conn = c if isinstance(c, dict) else (c.model_dump() if hasattr(c, "model_dump") else {})
                if str(conn.get("id")) == str(connectionId):
                    authority = conn.get("authority")
                    if hasattr(authority, "value"):
                        authority = authority.value
                    username = conn.get("externalUsername", "")
                    return f"connection:{authority}:{username}"
        except Exception as e:
            logger.debug("_resolveConnectionIdToReference chatService: %s", e)
    app = getattr(services, "interfaceDbApp", None) if services else None
    if app and hasattr(app, "getUserConnectionById"):
        try:
            conn = app.getUserConnectionById(str(connectionId))
            if conn:
                authority = getattr(conn, "authority", None)
                if hasattr(authority, "value"):
                    authority = authority.value
                else:
                    authority = str(authority) if authority else "outlook"
                username = getattr(conn, "externalUsername", "") or ""
                return f"connection:{authority}:{username}"
        except Exception as e:
            logger.debug("_resolveConnectionIdToReference getUserConnectionById: %s", e)
    return None


def _buildEmailFilter(fromAddress: str = None, subjectContains: str = None, hasAttachment: bool = None) -> str:
    """Build Microsoft Graph API $filter string."""
    parts = []
    if fromAddress and str(fromAddress).strip():
        safe = str(fromAddress).strip().replace("'", "''")
        parts.append(f"from/emailAddress/address eq '{safe}'")
    if subjectContains and str(subjectContains).strip():
        safe = str(subjectContains).strip().replace("'", "''")
        parts.append(f"contains(subject,'{safe}')")
    if hasAttachment is True:
        parts.append("hasAttachments eq true")
    return " and ".join(parts) if parts else ""


def _buildSearchQuery(
    query: str = None, fromAddress: str = None, toAddress: str = None,
    subjectContains: str = None, bodyContains: str = None,
    hasAttachment: bool = None, filterStr: str = None,
) -> str:
    """Build Microsoft Graph $search query from discrete params."""
    if filterStr and str(filterStr).strip():
        return str(filterStr).strip()
    parts = []
    if query and str(query).strip():
        parts.append(str(query).strip())
    if fromAddress and str(fromAddress).strip():
        parts.append(f'from:{str(fromAddress).strip().replace(chr(34), "")}')
    if toAddress and str(toAddress).strip():
        parts.append(f'to:{str(toAddress).strip().replace(chr(34), "")}')
    if subjectContains and str(subjectContains).strip():
        parts.append(f'subject:{str(subjectContains).strip().replace(chr(34), "")}')
    if bodyContains and str(bodyContains).strip():
        parts.append(f'body:{str(bodyContains).strip().replace(chr(34), "")}')
    if hasAttachment is True:
        parts.append("hasattachments:true")
    return " ".join(parts) if parts else "*"


def _resolveConnectionParam(params: Dict, chatService, services) -> None:
    """Resolve connectionReference if it looks like a UUID (UserConnection.id)."""
    connRef = params.get("connectionReference")
    if connRef and _isUserConnectionId(connRef):
        resolved = _resolveConnectionIdToReference(chatService, connRef, services)
        if resolved:
            params["connectionReference"] = resolved


def _applyEmailCheckFilter(params: Dict) -> None:
    """Build filter from discrete email params for email.checkEmail."""
    built = _buildEmailFilter(
        fromAddress=params.get("fromAddress"),
        subjectContains=params.get("subjectContains"),
        hasAttachment=params.get("hasAttachment"),
    )
    rawFilter = (params.get("filter") or "").strip()
    params["filter"] = built if built else (rawFilter if rawFilter else None)
    for k in ("fromAddress", "subjectContains", "hasAttachment"):
        params.pop(k, None)


def _applyEmailSearchQuery(params: Dict) -> None:
    """Build query from discrete email params for email.searchEmail."""
    built = _buildSearchQuery(
        query=params.get("query"),
        fromAddress=params.get("fromAddress"),
        toAddress=params.get("toAddress"),
        subjectContains=params.get("subjectContains"),
        bodyContains=params.get("bodyContains"),
        hasAttachment=params.get("hasAttachment"),
        filterStr=params.get("filter"),
    )
    params["query"] = built
    for k in ("fromAddress", "toAddress", "subjectContains", "bodyContains", "hasAttachment", "filter"):
        params.pop(k, None)


def _wireHandover(nodeDef: Dict, inputSources: Dict, nodeOutputs: Dict, params: Dict) -> None:
    """Apply wire-handover: extract fields from upstream using INPUT_EXTRACTORS."""
    if 0 not in inputSources:
        return
    srcId, _ = inputSources[0]
    upstream = nodeOutputs.get(srcId)
    if not upstream or not isinstance(upstream, dict):
        return

    data = _unwrapTransit(upstream)
    if not isinstance(data, dict):
        return

    inputPorts = nodeDef.get("inputPorts", {})
    port0 = inputPorts.get(0, {})
    accepts = port0.get("accepts", [])

    for schemaName in accepts:
        if schemaName == "Transit":
            continue
        extractor = INPUT_EXTRACTORS.get(schemaName)
        if extractor:
            extracted = extractor(data)
            if extracted:
                for k, v in extracted.items():
                    params.setdefault(k, v)
                return


def _getOutputSchemaName(nodeDef: Dict) -> str:
    """Get the output schema name from the node definition."""
    outputPorts = nodeDef.get("outputPorts", {})
    port0 = outputPorts.get(0, {})
    return port0.get("schema", "ActionResult")


class ActionNodeExecutor:
    """Execute action nodes by mapping to method actions via ActionExecutor."""

    def __init__(self, services: Any):
        self.services = services

    async def execute(
        self,
        node: Dict[str, Any],
        context: Dict[str, Any],
    ) -> Any:
        from modules.features.graphicalEditor.nodeRegistry import getNodeTypeToMethodAction
        from modules.workflows.automation2.graphUtils import resolveParameterReferences
        from modules.workflows.processing.core.actionExecutor import ActionExecutor

        nodeType = node.get("type", "")
        nodeId = node.get("id", "")
        logger.info("ActionNodeExecutor node %s type=%s", nodeId, nodeType)

        mapping = getNodeTypeToMethodAction()
        methodAction = mapping.get(nodeType)
        if not methodAction:
            logger.debug("ActionNodeExecutor node %s not in mapping -> None", nodeId)
            return None

        methodName, actionName = methodAction
        nodeDef = _getNodeDefinition(nodeType) or {}
        outputSchema = _getOutputSchemaName(nodeDef)

        # 1. Resolve parameters (DataRef, SystemVar, Static)
        params = dict(node.get("parameters") or {})
        resolvedParams = resolveParameterReferences(params, context.get("nodeOutputs", {}))

        # 2. Wire-handover via extractors (fills missing params from upstream)
        inputSources = context.get("inputSources", {}).get(nodeId, {})
        _wireHandover(nodeDef, inputSources, context.get("nodeOutputs", {}), resolvedParams)

        # 3. Apply defaults from parameter definitions
        for pDef in nodeDef.get("parameters", []):
            pName = pDef.get("name")
            if pName and pName not in resolvedParams and "default" in pDef:
                resolvedParams[pName] = pDef["default"]

        # 4. Resolve connectionReference
        chatService = getattr(self.services, "chat", None)
        _resolveConnectionParam(resolvedParams, chatService, self.services)

        # 5. Node-type-specific param transformations
        if nodeType == "email.checkEmail":
            _applyEmailCheckFilter(resolvedParams)
        elif nodeType == "email.searchEmail":
            _applyEmailSearchQuery(resolvedParams)
        elif nodeType == "clickup.updateTask":
            from modules.workflows.automation2.clickupTaskUpdateMerge import merge_clickup_task_update_entries
            merge_clickup_task_update_entries(resolvedParams)

        # 6. email.checkEmail pause for email wait
        if nodeType == "email.checkEmail":
            runId = context.get("_runId")
            workflowId = context.get("workflowId")
            connRef = resolvedParams.get("connectionReference")
            if runId and workflowId and connRef:
                from modules.workflows.automation2.executors import PauseForEmailWaitError
                waitConfig = {
                    "connectionReference": connRef,
                    "folder": resolvedParams.get("folder", "Inbox"),
                    "limit": min(int(resolvedParams.get("limit") or 10), 50),
                    "filter": resolvedParams.get("filter"),
                }
                raise PauseForEmailWaitError(runId=runId, nodeId=nodeId, waitConfig=waitConfig)

        # 7. AI nodes: simpleMode by default
        if nodeType == "ai.prompt" and "simpleMode" not in resolvedParams:
            resolvedParams["simpleMode"] = True

        # 8. Build context for email.draftEmail from subject + body
        if nodeType == "email.draftEmail":
            subject = resolvedParams.get("subject", "")
            body = resolvedParams.get("body", "")
            if subject or body:
                contextParts = []
                if subject:
                    contextParts.append(f"Subject: {subject}")
                if body:
                    contextParts.append(f"Body:\n{body}")
                resolvedParams["context"] = "\n\n".join(contextParts)
                resolvedParams.pop("subject", None)
                resolvedParams.pop("body", None)

        # 9. file.create: build context from upstream
        if nodeType == "file.create" and "context" not in resolvedParams:
            if 0 in inputSources:
                srcId, _ = inputSources[0]
                upstream = context.get("nodeOutputs", {}).get(srcId)
                if upstream and isinstance(upstream, dict):
                    data = _unwrapTransit(upstream)
                    ctx = ""
                    if isinstance(data, dict):
                        ctx = data.get("context") or data.get("response") or data.get("text") or ""
                    if ctx:
                        resolvedParams["context"] = ctx

        # 10. Pass upstream documents as documentList if available
        # Use truthiness check: empty values ([], "", None) from static graph params
        # must not block automatic upstream population via wire connections.
        if not resolvedParams.get("documentList") and 0 in inputSources:
            srcId, _ = inputSources[0]
            upstream = context.get("nodeOutputs", {}).get(srcId)
            if upstream and isinstance(upstream, dict):
                data = _unwrapTransit(upstream)
                if isinstance(data, dict):
                    docs = data.get("documents") or data.get("documentList")
                    if docs:
                        resolvedParams["documentList"] = docs

        # 11. Execute action
        logger.info("ActionNodeExecutor node %s calling %s.%s", nodeId, methodName, actionName)
        try:
            executor = ActionExecutor(self.services)
            result = await executor.executeAction(methodName, actionName, resolvedParams)
        except Exception as e:
            logger.exception("ActionNodeExecutor node %s FAILED: %s", nodeId, e)
            return _normalizeError(e, outputSchema)

        # 12. Build normalized output
        docsList = [d.model_dump() if hasattr(d, "model_dump") else d for d in (result.documents or [])]

        extractedContext = ""
        if result.documents:
            doc = result.documents[0]
            raw = getattr(doc, "documentData", None) if hasattr(doc, "documentData") else (doc.get("documentData") if isinstance(doc, dict) else None)
            if raw:
                extractedContext = raw.decode("utf-8", errors="replace").strip() if isinstance(raw, bytes) else str(raw).strip()

        promptText = str(resolvedParams.get("aiPrompt") or resolvedParams.get("prompt") or "").strip()

        out = {
            "success": result.success,
            "error": result.error,
            "documents": docsList,
            "documentList": docsList,
            "data": result.model_dump() if hasattr(result, "model_dump") else {"success": result.success, "error": result.error},
        }

        if nodeType.startswith("ai."):
            out["prompt"] = promptText
            out["response"] = extractedContext
            out["context"] = f"{promptText}\n\n{extractedContext}" if promptText and extractedContext else (extractedContext or promptText)
            # Structured output
            if extractedContext:
                try:
                    parsed = json.loads(extractedContext)
                    if isinstance(parsed, dict):
                        out["responseData"] = parsed
                except (json.JSONDecodeError, TypeError):
                    pass

        if nodeType.startswith("clickup.") and result.success and docsList:
            try:
                d0 = docsList[0] if isinstance(docsList[0], dict) else {}
                raw = d0.get("documentData")
                if isinstance(raw, str) and raw.strip():
                    parsed = json.loads(raw)
                    if isinstance(parsed, dict) and parsed.get("id") is not None:
                        out["taskId"] = str(parsed["id"])
                        out["task"] = parsed
            except (json.JSONDecodeError, TypeError, ValueError):
                pass

        return _normalizeToSchema(out, outputSchema)