All files / src/app/api/dev/milestones route.ts

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export const dynamic = "force-dynamic";

/**
 * Dev Milestones API
 * GET /api/dev/milestones - List all milestones
 * POST /api/dev/milestones - Create a new milestone
 */

import { NextRequest, NextResponse } from 'next/server';
import { Session } from "next-auth";
import {
  withAdmin,
  withErrorHandling,
  successResponse,
  createdResponse,
  ApiError,
  ApiSuccessResponse,
  ApiErrorResponse
} from "@/lib/api";
import { AuthenticatedUser } from "@/lib/api/middleware";
import { prisma } from '@/lib/prisma';
import { CreateDevMilestoneSchema, PaginationSchema } from '@/lib/validation/dev-ticket-schemas';
import { logger } from '@/lib/logging';

async function handleGet(
  request: NextRequest
): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
  const { searchParams } = new URL(request.url);

  // Parse pagination
  const paginationResult = PaginationSchema.safeParse({
    page: searchParams.get('page'),
    limit: searchParams.get('limit')
  });

  const { page, limit } = paginationResult.success
    ? paginationResult.data
    : { page: 1, limit: 50 };

  // Parse filters
  const projectId = searchParams.get('projectId');
  const status = searchParams.get('status');

  const where: Record<string, unknown> = {};

  if (projectId) {
    where.projectId = projectId;
  }

  if (status) {
    where.status = status;
  }

  // Get total count
  const total = await prisma.devMilestone.count({ where });

  // Get milestones
  const milestones = await prisma.devMilestone.findMany({
    where,
    include: {
      project: {
        select: { id: true, name: true, key: true, color: true }
      },
      _count: {
        select: { tickets: true }
      }
    },
    orderBy: [{ status: 'asc' }, { dueDate: 'asc' }],
    skip: (page - 1) * limit,
    take: limit
  });

  // Get ticket stats for each milestone
  const milestonesWithStats = await Promise.all(
    milestones.map(async (milestone) => {
      const ticketStats = await prisma.devTicket.groupBy({
        by: ['status'],
        where: { milestoneId: milestone.id },
        _count: true
      });

      const completedCount = ticketStats
        .filter((s) => s.status === 'COMPLETED')
        .reduce((sum, s) => sum + s._count, 0);

      return {
        ...milestone,
        stats: {
          totalTickets: milestone._count.tickets,
          completedTickets: completedCount,
          progress: milestone._count.tickets > 0
            ? Math.round((completedCount / milestone._count.tickets) * 100)
            : 0
        }
      };
    })
  );

  return successResponse({
    data: milestonesWithStats,
    pagination: {
      page,
      limit,
      total,
      totalPages: Math.ceil(total / limit)
    }
  });
}

async function handlePost(
  request: NextRequest,
  context: unknown,
  session: Session,
  user: AuthenticatedUser
): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
  const body = await request.json();
  const validationResult = CreateDevMilestoneSchema.safeParse(body);

  if (!validationResult.success) {
    throw ApiError.validation(
      'Validation failed',
      validationResult.error.flatten().fieldErrors
    );
  }

  const data = validationResult.data;

  // Verify project exists
  const project = await prisma.devProject.findUnique({
    where: { id: data.projectId }
  });

  if (!project) {
    throw ApiError.notFound('Project not found');
  }

  // Create milestone
  const milestone = await prisma.devMilestone.create({
    data: {
      name: data.name,
      description: data.description,
      projectId: data.projectId,
      startDate: data.startDate,
      dueDate: data.dueDate
    },
    include: {
      project: {
        select: { id: true, name: true, key: true, color: true }
      },
      _count: {
        select: { tickets: true }
      }
    }
  });

  logger.info(`Created milestone "${data.name}"`, {
    category: 'DEV_MILESTONES',
    milestoneId: milestone.id,
    projectId: data.projectId,
    userId: user.id
  });

  return createdResponse(milestone);
}

export const GET = withErrorHandling(withAdmin(handleGet));
export const POST = withErrorHandling(withAdmin(handlePost));