import { requireAuth } from '../../utils/auth.js'
import { validateBody } from '../../utils/validateBody.js'
import { onboardingTrackSchema } from '../../utils/schemas.js'
import Member from '../../models/member.js'
import BoardPost from '../../models/boardPost.js'
import { logActivity } from '../../utils/activityLog.js'

export default defineEventHandler(async (event) => {
  const member = await requireAuth(event)
  const { goal, skip } = await validateBody(event, onboardingTrackSchema)

  // Already graduated — no-op
  if (member.onboarding?.completedAt) {
    return { success: true }
  }

  // Skip path: mark suggestion as skipped so the UI advances.
  if (skip) {
    await Member.findByIdAndUpdate(member._id, {
      $set: { [`onboarding.skipped.${skip}`]: true },
    })
    return { success: true }
  }

  // Idempotent — already tracked
  if (member.onboarding?.[goal]) {
    return { success: true }
  }

  // Set the boolean
  await Member.findByIdAndUpdate(member._id, {
    $set: { [`onboarding.${goal}`]: true },
  })

  // Log the individual goal completion
  await logActivity(member._id, 'member_onboarding_goal_completed', { goal }, { visibility: 'admin' })

  // Must have at least one board post to graduate
  const hasPosted = await BoardPost.exists({ author: member._id })

  // Graduation check — atomic so concurrent requests can't double-graduate
  const graduated = hasPosted
    ? await Member.findOneAndUpdate(
        {
          _id: member._id,
          'onboarding.completedAt': null,
          'onboarding.eventPageVisited': true,
          'onboarding.boardPageVisited': true,
          'onboarding.wikiClicked': true,
          'craftTags.0': { $exists: true },
        },
        { $set: { 'onboarding.completedAt': new Date() } },
        { new: true }
      )
    : null

  if (graduated) {
    await logActivity(member._id, 'member_onboarding_completed', {}, { visibility: 'admin' })
  }

  return { success: true, graduated: !!graduated }
})