# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
"""
Chatbot V2 Feature Container - Main Module.
Handles feature initialization and RBAC catalog registration.
Context-aware chat with file upload and extraction.
"""

import logging
from typing import Dict, List, Any

logger = logging.getLogger(__name__)

# Feature metadata
FEATURE_CODE = "chatbotv2"
FEATURE_LABEL = {"en": "Chatbot V2", "de": "Chatbot V2", "fr": "Chatbot V2"}
FEATURE_ICON = "mdi-robot-outline"

# UI Objects for RBAC catalog - single "conversations" view (upload + chat in one page)
UI_OBJECTS = [
    {
        "objectKey": "ui.feature.chatbotv2.conversations",
        "label": {"en": "Conversations", "de": "Konversationen", "fr": "Conversations"},
        "meta": {"area": "conversations"}
    },
]

# Resource Objects for RBAC catalog
RESOURCE_OBJECTS = [
    {
        "objectKey": "resource.feature.chatbotv2.upload",
        "label": {"en": "Upload Files", "de": "Dateien hochladen", "fr": "Télécharger fichiers"},
        "meta": {"endpoint": "/api/chatbotv2/{instanceId}/upload", "method": "POST"}
    },
    {
        "objectKey": "resource.feature.chatbotv2.startStream",
        "label": {"en": "Start Chat (Stream)", "de": "Chat starten (Stream)", "fr": "Démarrer chat (Stream)"},
        "meta": {"endpoint": "/api/chatbotv2/{instanceId}/start/stream", "method": "POST"}
    },
    {
        "objectKey": "resource.feature.chatbotv2.stop",
        "label": {"en": "Stop Chat", "de": "Chat stoppen", "fr": "Arrêter chat"},
        "meta": {"endpoint": "/api/chatbotv2/{instanceId}/stop/{workflowId}", "method": "POST"}
    },
    {
        "objectKey": "resource.feature.chatbotv2.threads",
        "label": {"en": "Get Threads", "de": "Threads abrufen", "fr": "Récupérer threads"},
        "meta": {"endpoint": "/api/chatbotv2/{instanceId}/threads", "method": "GET"}
    },
    {
        "objectKey": "resource.feature.chatbotv2.delete",
        "label": {"en": "Delete Chat", "de": "Chat löschen", "fr": "Supprimer chat"},
        "meta": {"endpoint": "/api/chatbotv2/{instanceId}/conversations/{workflowId}", "method": "DELETE"}
    },
]

# Template roles for this feature
TEMPLATE_ROLES = [
    {
        "roleLabel": "chatbotv2-viewer",
        "description": {
            "en": "Chatbot V2 Viewer - View threads (read-only)",
            "de": "Chatbot V2 Betrachter - Threads ansehen (nur lesen)",
            "fr": "Visualiseur Chatbot V2 - Consulter les threads (lecture seule)"
        },
        "accessRules": [
            {"context": "UI", "item": "ui.feature.chatbotv2.conversations", "view": True},
            {"context": "RESOURCE", "item": "resource.feature.chatbotv2.threads", "view": True},
            {"context": "DATA", "item": None, "view": True, "read": "m", "create": "n", "update": "n", "delete": "n"},
        ]
    },
    {
        "roleLabel": "chatbotv2-user",
        "description": {
            "en": "Chatbot V2 User - Upload, extract, and chat with own threads",
            "de": "Chatbot V2 Benutzer - Hochladen, extrahieren und chatten mit eigenen Threads",
            "fr": "Utilisateur Chatbot V2 - Upload, extraction et chat avec ses threads"
        },
        "accessRules": [
            {"context": "UI", "item": "ui.feature.chatbotv2.conversations", "view": True},
            {"context": "RESOURCE", "item": "resource.feature.chatbotv2.upload", "view": True},
            {"context": "RESOURCE", "item": "resource.feature.chatbotv2.startStream", "view": True},
            {"context": "RESOURCE", "item": "resource.feature.chatbotv2.stop", "view": True},
            {"context": "RESOURCE", "item": "resource.feature.chatbotv2.threads", "view": True},
            {"context": "RESOURCE", "item": "resource.feature.chatbotv2.delete", "view": True},
            {"context": "DATA", "item": None, "view": True, "read": "m", "create": "m", "update": "m", "delete": "m"},
        ]
    },
    {
        "roleLabel": "chatbotv2-admin",
        "description": {
            "en": "Chatbot V2 Admin - Full access to all features",
            "de": "Chatbot V2 Admin - Vollzugriff auf alle Funktionen",
            "fr": "Administrateur Chatbot V2 - Accès complet"
        },
        "accessRules": [
            {"context": "UI", "item": None, "view": True},
            {"context": "RESOURCE", "item": None, "view": True},
            {"context": "DATA", "item": None, "view": True, "read": "a", "create": "a", "update": "a", "delete": "a"},
        ]
    },
]


def getFeatureDefinition() -> Dict[str, Any]:
    """Return the feature definition for registration."""
    return {
        "code": FEATURE_CODE,
        "label": FEATURE_LABEL,
        "icon": FEATURE_ICON,
    }


def getUiObjects() -> List[Dict[str, Any]]:
    """Return UI objects for RBAC catalog registration."""
    return UI_OBJECTS


def getResourceObjects() -> List[Dict[str, Any]]:
    """Return resource objects for RBAC catalog registration."""
    return RESOURCE_OBJECTS


def getTemplateRoles() -> List[Dict[str, Any]]:
    """Return template roles for this feature."""
    return TEMPLATE_ROLES


def registerFeature(catalogService) -> bool:
    """
    Register this feature's RBAC objects in the catalog.
    """
    try:
        for uiObj in UI_OBJECTS:
            catalogService.registerUiObject(
                featureCode=FEATURE_CODE,
                objectKey=uiObj["objectKey"],
                label=uiObj["label"],
                meta=uiObj.get("meta")
            )

        for resObj in RESOURCE_OBJECTS:
            catalogService.registerResourceObject(
                featureCode=FEATURE_CODE,
                objectKey=resObj["objectKey"],
                label=resObj["label"],
                meta=resObj.get("meta")
            )

        _syncTemplateRolesToDb()

        logger.info(f"Feature '{FEATURE_CODE}' registered {len(UI_OBJECTS)} UI objects and {len(RESOURCE_OBJECTS)} resource objects")
        return True

    except Exception as e:
        logger.error(f"Failed to register feature '{FEATURE_CODE}': {e}")
        return False


def _syncTemplateRolesToDb() -> int:
    """Sync template roles and their AccessRules to the database."""
    try:
        from modules.interfaces.interfaceDbApp import getRootInterface
        from modules.datamodels.datamodelRbac import Role, AccessRule, AccessRuleContext

        rootInterface = getRootInterface()

        existingRoles = rootInterface.getRolesByFeatureCode(FEATURE_CODE)
        templateRoles = [r for r in existingRoles if r.mandateId is None]
        existingRoleLabels = {r.roleLabel: str(r.id) for r in templateRoles}

        createdCount = 0
        for roleTemplate in TEMPLATE_ROLES:
            roleLabel = roleTemplate["roleLabel"]

            if roleLabel in existingRoleLabels:
                roleId = existingRoleLabels[roleLabel]
                _ensureAccessRulesForRole(rootInterface, roleId, roleTemplate.get("accessRules", []))
            else:
                newRole = Role(
                    roleLabel=roleLabel,
                    description=roleTemplate.get("description", {}),
                    featureCode=FEATURE_CODE,
                    mandateId=None,
                    featureInstanceId=None,
                    isSystemRole=False
                )
                createdRole = rootInterface.db.recordCreate(Role, newRole.model_dump())
                roleId = createdRole.get("id")

                _ensureAccessRulesForRole(rootInterface, roleId, roleTemplate.get("accessRules", []))

                logger.info(f"Created template role '{roleLabel}' with ID {roleId}")
                createdCount += 1

        if createdCount > 0:
            logger.info(f"Feature '{FEATURE_CODE}': Created {createdCount} template roles")

        return createdCount

    except Exception as e:
        logger.error(f"Error syncing template roles for feature '{FEATURE_CODE}': {e}")
        return 0


def _ensureAccessRulesForRole(rootInterface, roleId: str, ruleTemplates: List[Dict[str, Any]]) -> int:
    """Ensure AccessRules exist for a role based on templates."""
    from modules.datamodels.datamodelRbac import AccessRule, AccessRuleContext

    existingRules = rootInterface.getAccessRulesByRole(roleId)
    existingSignatures = set()
    for rule in existingRules:
        sig = (rule.context.value if rule.context else None, rule.item)
        existingSignatures.add(sig)

    createdCount = 0
    for template in ruleTemplates:
        context = template.get("context", "UI")
        item = template.get("item")
        sig = (context, item)

        if sig in existingSignatures:
            continue

        if context == "UI":
            contextEnum = AccessRuleContext.UI
        elif context == "DATA":
            contextEnum = AccessRuleContext.DATA
        elif context == "RESOURCE":
            contextEnum = AccessRuleContext.RESOURCE
        else:
            contextEnum = context

        newRule = AccessRule(
            roleId=roleId,
            context=contextEnum,
            item=item,
            view=template.get("view", False),
            read=template.get("read"),
            create=template.get("create"),
            update=template.get("update"),
            delete=template.get("delete"),
        )
        rootInterface.db.recordCreate(AccessRule, newRule.model_dump())
        createdCount += 1

    if createdCount > 0:
        logger.debug(f"Created {createdCount} AccessRules for role {roleId}")

    return createdCount