# Notification management
# app/api/v1/vendor/notifications.py
"""
Vendor notification management endpoints.

Vendor Context: Uses token_vendor_id from JWT token (authenticated vendor API pattern)
"""

import logging

from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session

from app.api.deps import get_current_vendor_api
from app.core.database import get_db
from app.exceptions import InvalidTokenException
from app.services.vendor_service import vendor_service
from models.database.user import User

router = APIRouter(prefix="/notifications")
logger = logging.getLogger(__name__)


def _get_vendor_from_token(current_user: User, db: Session):
    """Helper to get vendor from JWT token."""
    if not hasattr(current_user, "token_vendor_id"):
        raise InvalidTokenException("Token missing vendor information. Please login again.")
    return vendor_service.get_vendor_by_id(db, current_user.token_vendor_id)


@router.get("")
def get_notifications(
    skip: int = Query(0, ge=0),
    limit: int = Query(50, ge=1, le=100),
    unread_only: bool | None = Query(False),
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get vendor notifications.

    TODO: Implement in Slice 5
    - Get all notifications for vendor
    - Filter by read/unread status
    - Support pagination
    - Return notification details
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {
        "notifications": [],
        "total": 0,
        "unread_count": 0,
        "message": "Notifications coming in Slice 5",
    }


@router.get("/unread-count")
def get_unread_count(
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get count of unread notifications.

    TODO: Implement in Slice 5
    - Count unread notifications for vendor
    - Used for notification badge
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"unread_count": 0, "message": "Unread count coming in Slice 5"}


@router.put("/{notification_id}/read")
def mark_as_read(
    notification_id: int,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Mark notification as read.

    TODO: Implement in Slice 5
    - Mark single notification as read
    - Update read timestamp
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"message": "Mark as read coming in Slice 5"}


@router.put("/mark-all-read")
def mark_all_as_read(
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Mark all notifications as read.

    TODO: Implement in Slice 5
    - Mark all vendor notifications as read
    - Update timestamps
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"message": "Mark all as read coming in Slice 5"}


@router.delete("/{notification_id}")
def delete_notification(
    notification_id: int,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Delete notification.

    TODO: Implement in Slice 5
    - Delete single notification
    - Verify notification belongs to vendor
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"message": "Notification deletion coming in Slice 5"}


@router.get("/settings")
def get_notification_settings(
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get notification preferences.

    TODO: Implement in Slice 5
    - Get email notification settings
    - Get in-app notification settings
    - Get notification types enabled/disabled
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {
        "email_notifications": True,
        "in_app_notifications": True,
        "notification_types": {},
        "message": "Notification settings coming in Slice 5",
    }


@router.put("/settings")
def update_notification_settings(
    settings: dict,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Update notification preferences.

    TODO: Implement in Slice 5
    - Update email notification settings
    - Update in-app notification settings
    - Enable/disable specific notification types
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"message": "Notification settings update coming in Slice 5"}


@router.get("/templates")
def get_notification_templates(
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Get notification email templates.

    TODO: Implement in Slice 5
    - Get all notification templates
    - Include: order confirmation, shipping notification, etc.
    - Return template details
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"templates": [], "message": "Notification templates coming in Slice 5"}


@router.put("/templates/{template_id}")
def update_notification_template(
    template_id: int,
    template_data: dict,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Update notification email template.

    TODO: Implement in Slice 5
    - Update template subject
    - Update template body (HTML/text)
    - Validate template variables
    - Preview template
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"message": "Template update coming in Slice 5"}


@router.post("/test")
def send_test_notification(
    notification_data: dict,
    current_user: User = Depends(get_current_vendor_api),
    db: Session = Depends(get_db),
):
    """
    Send test notification.

    TODO: Implement in Slice 5
    - Send test email notification
    - Use specified template
    - Send to current user's email
    """
    vendor = _get_vendor_from_token(current_user, db)  # noqa: F841 - vendor will be used when implemented
    return {"message": "Test notification coming in Slice 5"}