import 'server-only'

import { prisma } from '@/lib/prisma'
import { resolveActiveSprint } from '@/lib/active-sprint'
import { sprintStatusToApi, type SprintStatusApi } from '@/lib/task-status'

export type SprintSwitcherItem = {
  id: string
  code: string
  sprint_goal: string
  status: SprintStatusApi
}

export interface SprintSwitcherData {
  sprintItems: SprintSwitcherItem[]
  buildingSprintIds: string[]
  activeSprintItem: SprintSwitcherItem | null
}

export async function getSprintSwitcherData(
  productId: string,
  opts?: { activeSprintId?: string | null; userId?: string },
): Promise<SprintSwitcherData> {
  const allSprints = await prisma.sprint.findMany({
    where: { product_id: productId },
    orderBy: { created_at: 'desc' },
    select: { id: true, code: true, sprint_goal: true, status: true },
  })

  let buildingSprintIds: string[] = []
  if (allSprints.length > 0) {
    const runs = await prisma.sprintRun.findMany({
      where: {
        sprint_id: { in: allSprints.map(s => s.id) },
        status: { in: ['QUEUED', 'RUNNING'] },
      },
      select: { sprint_id: true },
    })
    buildingSprintIds = Array.from(new Set(runs.map(r => r.sprint_id)))
  }

  const sprintItems: SprintSwitcherItem[] = allSprints.map(s => ({
    id: s.id,
    code: s.code,
    sprint_goal: s.sprint_goal,
    status: sprintStatusToApi(s.status),
  }))

  let activeSprintItem: SprintSwitcherItem | null = null
  if (opts?.activeSprintId !== undefined) {
    activeSprintItem = opts.activeSprintId
      ? sprintItems.find(s => s.id === opts.activeSprintId) ?? null
      : null
  } else if (opts?.userId) {
    const resolved = await resolveActiveSprint(productId, opts.userId)
    activeSprintItem = resolved
      ? sprintItems.find(s => s.id === resolved.id) ?? null
      : null
  }

  return { sprintItems, buildingSprintIds, activeSprintItem }
}