All files / src/app/api/admin/support/tickets/[id]/assign route.ts

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export const dynamic = "force-dynamic";

/**
 * Admin Ticket Assignment API
 * POST /api/admin/support/tickets/[id]/assign - Assign ticket to agent
 */

import { NextRequest, NextResponse } from 'next/server';
import { requireAdminRole, handleAuthError } from '@/lib/auth';
import { prisma } from '@/lib/prisma';
import { AssignTicketSchema } from '@/lib/validation/support-schemas';
import { recordAssignment } from '@/lib/support/ticket-utils';
import { notifyAgentAssigned } from '@/lib/support/notification-utils';
import { TicketStatus, SupportTicketWithRelations } from '@/types/support';
import { handleError } from '@/lib/error-handler';
import { logger } from '@/lib/logging';

interface RouteParams {
  params: Promise<{ id: string }>;
}

export async function POST(request: NextRequest, { params }: RouteParams) {
  try {
    const session = await requireAdminRole();
    const { id } = await params;
    const adminId = Number(session.user.id);

    // Get current ticket
    const ticket = await prisma.supportTicket.findUnique({
      where: { id },
      select: {
        id: true,
        ticketNumber: true,
        assignedToId: true,
        status: true}});

    if (!ticket) {
      return NextResponse.json(
        { success: false, error: 'Ticket not found' },
        { status: 404 }
      );
    }

    // Validate input
    const body = await request.json();
    const validationResult = AssignTicketSchema.safeParse(body);
    if (!validationResult.success) {
      return NextResponse.json(
        {
          success: false,
          error: 'Validation failed',
          details: validationResult.error.flatten().fieldErrors},
        { status: 400 }
      );
    }

    const { assignedToId } = validationResult.data;

    // Verify the agent exists and is an admin
    if (assignedToId) {
      const agent = await prisma.user.findUnique({
        where: { id: assignedToId },
        select: { id: true, role: true }});

      if (!agent || agent.role !== 'ADMIN') {
        return NextResponse.json(
          { success: false, error: 'Invalid agent' },
          { status: 400 }
        );
      }
    }

    // Build update data
    const updateData: Record<string, unknown> = {
      assignedToId};

    // If assigning and ticket is OPEN, move to IN_PROGRESS
    if (assignedToId && ticket.status === TicketStatus.OPEN) {
      updateData.status = TicketStatus.IN_PROGRESS;
    }

    // Set first response time if this is the first assignment
    if (assignedToId && !ticket.assignedToId) {
      updateData.firstResponseAt = new Date();
    }

    // Update the ticket
    const updatedTicket = await prisma.supportTicket.update({
      where: { id },
      data: updateData,
      include: {
        user: {
          select: { id: true, name: true, email: true }},
        assignedTo: {
          select: { id: true, name: true, email: true }}}});

    // Record in history
    await recordAssignment(id, ticket.assignedToId, assignedToId, adminId);

    // Notify new agent
    if (assignedToId) {
      await notifyAgentAssigned(
        updatedTicket as unknown as SupportTicketWithRelations,
        assignedToId
      );

      // Update agent profile stats
      await prisma.supportAgentProfile.upsert({
        where: { userId: assignedToId },
        update: {
          totalTickets: { increment: 1 }},
        create: {
          userId: assignedToId,
          totalTickets: 1}});
    }

    logger.info('Ticket assigned', {
      category: 'ADMIN_SUPPORT',
      ticketId: id,
      ticketNumber: ticket.ticketNumber,
      oldAssignee: ticket.assignedToId,
      newAssignee: assignedToId,
      adminId});

    return NextResponse.json({
      success: true,
      data: updatedTicket,
      message: assignedToId
        ? `Ticket assigned to ${updatedTicket.assignedTo?.name || 'agent'}`
        : 'Ticket unassigned'});
  } catch (error) {
    const authResponse = handleAuthError(error as Error);
    if (authResponse) return authResponse;

    logger.error('Error assigning ticket', error instanceof Error ? error : new Error(String(error)), { category: 'ADMIN_SUPPORT' });
    return handleError(error);
  }
}