# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
"""
Notification model for in-app notifications.
Supports actionable notifications (e.g., invitation accept/decline).
"""

import uuid
from typing import Optional, List
from enum import Enum
from pydantic import BaseModel, Field, ConfigDict
from modules.datamodels.datamodelBase import PowerOnModel
from modules.shared.i18nRegistry import i18nModel


class NotificationType(str, Enum):
    """Types of notifications"""
    INVITATION = "invitation"      # Einladung zu Mandat/Feature
    SYSTEM = "system"              # System-Nachrichten
    WORKFLOW = "workflow"          # Workflow-Status Updates
    MENTION = "mention"            # Erwähnung in Chat/Kommentar


class NotificationStatus(str, Enum):
    """Status of a notification"""
    UNREAD = "unread"              # Noch nicht gelesen
    READ = "read"                  # Gelesen
    ACTIONED = "actioned"          # Aktion wurde durchgeführt
    DISMISSED = "dismissed"        # Verworfen/Geschlossen


@i18nModel("Benachrichtigungs-Aktion")
class NotificationAction(BaseModel):
    """Possible action for a notification"""
    actionId: str = Field(
        description="Unique identifier for the action (e.g., 'accept', 'decline')",
        json_schema_extra={"label": "Aktions-ID"},
    )
    label: str = Field(
        description="Display label for the action button",
        json_schema_extra={"label": "Bezeichnung"},
    )
    style: str = Field(
        default="default",
        description="Button style: 'primary', 'danger', 'default'",
        json_schema_extra={"label": "Stil"},
    )


@i18nModel("Benachrichtigung")
class UserNotification(PowerOnModel):
    """
    In-app notification for a user.
    Supports actionable notifications with accept/decline buttons.
    """
    id: str = Field(
        default_factory=lambda: str(uuid.uuid4()),
        description="Unique ID of the notification",
        json_schema_extra={"label": "ID", "frontend_type": "text", "frontend_readonly": True, "frontend_required": False}
    )
    userId: str = Field(
        description="Target user ID for this notification",
        json_schema_extra={
            "label": "Benutzer",
            "frontend_type": "text",
            "frontend_readonly": True,
            "frontend_required": True,
            "fk_target": {"db": "poweron_app", "table": "User"},
        },
    )

    type: NotificationType = Field(
        default=NotificationType.SYSTEM,
        description="Type of notification",
        json_schema_extra={
            "label": "Typ",
            "frontend_type": "select",
            "frontend_readonly": True,
            "frontend_required": True,
            "frontend_options": [
                {"value": "invitation", "label": "Einladung"},
                {"value": "system", "label": "System"},
                {"value": "workflow", "label": "Workflow"},
                {"value": "mention", "label": "Erwähnung"}
            ]
        }
    )
    status: NotificationStatus = Field(
        default=NotificationStatus.UNREAD,
        description="Current status of the notification",
        json_schema_extra={
            "label": "Status",
            "frontend_type": "select",
            "frontend_readonly": True,
            "frontend_required": False,
            "frontend_options": [
                {"value": "unread", "label": "Ungelesen"},
                {"value": "read", "label": "Gelesen"},
                {"value": "actioned", "label": "Bearbeitet"},
                {"value": "dismissed", "label": "Verworfen"}
            ]
        }
    )

    title: str = Field(
        description="Notification title",
        json_schema_extra={"label": "Titel", "frontend_type": "text", "frontend_readonly": True, "frontend_required": True}
    )
    message: str = Field(
        description="Notification message/body",
        json_schema_extra={"label": "Nachricht", "frontend_type": "textarea", "frontend_readonly": True, "frontend_required": True}
    )
    icon: Optional[str] = Field(
        default=None,
        description="Optional icon identifier (e.g., 'mail', 'warning', 'info')",
        json_schema_extra={"label": "Symbol", "frontend_type": "text", "frontend_readonly": True, "frontend_required": False}
    )

    referenceType: Optional[str] = Field(
        default=None,
        description="Type of referenced object (e.g., 'Invitation', 'Workflow')",
        json_schema_extra={"label": "Referenz-Typ", "frontend_type": "text", "frontend_readonly": True, "frontend_required": False}
    )
    referenceId: Optional[str] = Field(
        default=None,
        description="ID of referenced object",
        json_schema_extra={"label": "Referenz-ID", "frontend_type": "text", "frontend_readonly": True, "frontend_required": False}
    )

    actions: Optional[List[NotificationAction]] = Field(
        default=None,
        description="List of possible actions for this notification",
        json_schema_extra={"label": "Aktionen", "frontend_type": "json", "frontend_readonly": True, "frontend_required": False}
    )

    actionTaken: Optional[str] = Field(
        default=None,
        description="Which action was taken (actionId)",
        json_schema_extra={"label": "Durchgefuehrte Aktion", "frontend_type": "text", "frontend_readonly": True, "frontend_required": False}
    )
    actionResult: Optional[str] = Field(
        default=None,
        description="Result message from the action",
        json_schema_extra={"label": "Aktions-Ergebnis", "frontend_type": "textarea", "frontend_readonly": True, "frontend_required": False}
    )

    readAt: Optional[float] = Field(
        default=None,
        description="When the notification was read (UTC timestamp)",
        json_schema_extra={"label": "Gelesen am", "frontend_type": "timestamp", "frontend_readonly": True, "frontend_required": False}
    )
    actionedAt: Optional[float] = Field(
        default=None,
        description="When action was taken (UTC timestamp)",
        json_schema_extra={"label": "Bearbeitet am", "frontend_type": "timestamp", "frontend_readonly": True, "frontend_required": False}
    )
    expiresAt: Optional[float] = Field(
        default=None,
        description="When the notification expires (optional, UTC timestamp)",
        json_schema_extra={"label": "Gueltig bis", "frontend_type": "timestamp", "frontend_readonly": True, "frontend_required": False}
    )

    model_config = ConfigDict(use_enum_values=True)