import prisma from "~/server/utils/prisma";

export default defineEventHandler(async (event) => {
  try {
    // Get current user from auth middleware
    const user = event.context.user;
    if (!user) {
      throw createError({
        statusCode: 401,
        statusMessage: "Authentication required",
      });
    }

    // Get queue statistics from database
    const [pending, processing, completed, failed] = await Promise.all([
      // Get pending jobs count
      prisma.notification_queue.count({
        where: {
          status: 'queued'
        }
      }),
      // Get processing jobs count
      prisma.notification_queue.count({
        where: {
          status: 'processing'
        }
      }),
      // Get completed jobs count
      prisma.notification_queue.count({
        where: {
          status: 'sent'
        }
      }),
      // Get failed jobs count
      prisma.notification_queue.count({
        where: {
          status: 'failed'
        }
      })
    ]);

    return {
      success: true,
      data: {
        pending,
        processing,
        completed,
        failed
      }
    };
  } catch (error) {
    console.error('Error fetching queue statistics:', error);
    
    if (error.statusCode) {
      throw error;
    }
    
    throw createError({
      statusCode: 500,
      statusMessage: 'Failed to fetch queue statistics'
    });
  } finally {
    await prisma.$disconnect();
  }
});