// PBI-74 / Story 9 / T-882: GET /api/sprints/:id/workspace
//
// Levert een SprintWorkspaceSnapshot (sprint + stories + tasksByStory) voor
// de sprint-workspace-store (ensureSprintLoaded). Auth + access-control via
// product-membership.

import { authenticateApiRequest } from '@/lib/api-auth'
import { prisma } from '@/lib/prisma'
import { productAccessFilter } from '@/lib/product-access'
import { storyStatusToApi, taskStatusToApi } from '@/lib/task-status'

export const dynamic = 'force-dynamic'

export async function GET(
  request: Request,
  { params }: { params: Promise<{ id: string }> },
) {
  const auth = await authenticateApiRequest(request)
  if ('error' in auth) {
    return Response.json({ error: auth.error }, { status: auth.status })
  }

  const { id } = await params

  const sprint = await prisma.sprint.findFirst({
    where: { id, product: productAccessFilter(auth.userId) },
    select: {
      id: true,
      product_id: true,
      code: true,
      sprint_goal: true,
      status: true,
      start_date: true,
      end_date: true,
      created_at: true,
      completed_at: true,
      product: { select: { id: true, name: true } },
    },
  })
  if (!sprint) {
    return Response.json({ error: 'Sprint niet gevonden' }, { status: 404 })
  }

  const [stories, tasks] = await Promise.all([
    prisma.story.findMany({
      where: { sprint_id: id },
      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }, { created_at: 'asc' }],
      include: {
        tasks: { select: { id: true, status: true } },
        assignee: { select: { id: true, username: true } },
      },
    }),
    prisma.task.findMany({
      where: { sprint_id: id },
      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
      select: {
        id: true,
        code: true,
        title: true,
        description: true,
        priority: true,
        sort_order: true,
        status: true,
        story_id: true,
        sprint_id: true,
        created_at: true,
      },
    }),
  ])

  const tasksByStory: Record<string, unknown[]> = {}
  for (const task of tasks) {
    const apiTask = { ...task, status: taskStatusToApi(task.status) }
    if (!tasksByStory[task.story_id]) tasksByStory[task.story_id] = []
    tasksByStory[task.story_id].push(apiTask)
  }

  return Response.json({
    product: sprint.product,
    sprint: {
      id: sprint.id,
      product_id: sprint.product_id,
      code: sprint.code,
      sprint_goal: sprint.sprint_goal,
      status: sprint.status,
      start_date: sprint.start_date ? sprint.start_date.toISOString().slice(0, 10) : null,
      end_date: sprint.end_date ? sprint.end_date.toISOString().slice(0, 10) : null,
      created_at: sprint.created_at,
      completed_at: sprint.completed_at,
    },
    stories: stories.map((s) => ({
      id: s.id,
      code: s.code,
      title: s.title,
      description: s.description,
      acceptance_criteria: s.acceptance_criteria,
      priority: s.priority,
      sort_order: s.sort_order,
      status: storyStatusToApi(s.status),
      pbi_id: s.pbi_id,
      sprint_id: s.sprint_id,
      created_at: s.created_at,
      taskCount: s.tasks.length,
      doneCount: s.tasks.filter((t) => t.status === 'DONE').length,
      assignee_id: s.assignee_id,
      assignee_username: s.assignee?.username ?? null,
    })),
    tasksByStory,
  })
}