import { prisma } from '~/server/utils/prisma'

export default defineEventHandler(async (event) => {
  const userId = getRouterParam(event, 'id')

  if (!userId) {
    throw createError({ statusCode: 400, message: 'User ID is required' })
  }

  let profile: any = null
  try {
    profile = await prisma.profile.findFirst({
      where: {
        OR: [
          { userId: userId },
          { user: { username: userId } }
        ]
      },
      include: {
        user: {
          include: {
            _count: {
              select: { canvases: true, followers: true, following: true }
            }
          }
        }
      }
    })

    if (!profile) {
      const user = await prisma.user.findFirst({
        where: {
          OR: [{ id: userId }, { username: userId }]
        }
      })

      if (user) {
        profile = await prisma.profile.create({
          data: {
            userId: user.id,
            displayName: user.username,
            avatar: `https://api.dicebear.com/7.x/avataaars/svg?seed=${user.id}`
          },
          include: {
            user: {
              include: {
                _count: {
                  select: { canvases: true, followers: true, following: true }
                }
              }
            }
          }
        })
      }
    }
  } catch (e: any) {
    console.warn(`[Profile API] Database unreachable (${e.message}), returning dev profile for ${userId}`)
  }

  if (!profile) {
    profile = {
      userId,
      displayName: userId.length > 20 ? 'User' : userId,
      avatar: `https://api.dicebear.com/7.x/avataaars/svg?seed=${userId}`,
      bio: '',
      user: {
        _count: { canvases: 0, followers: 0, following: 0 }
      }
    }
  }

  return { 
    profile: {
      ...profile,
      canvasCount: profile.user?._count?.canvases || 0,
      followerCount: profile.user?._count?.followers || 0,
      followingCount: profile.user?._count?.following || 0
    } 
  }
})