// Admin-API (WOMS): Website-Analyse je Projekt ein-/ausschalten. AVV wird mündlich bestätigt.
import { Router } from 'express'
import { config } from '../../config.js'
import { getDocument } from '../../services/appwriteAdmin.js'
import { requireAppwriteStaff } from '../../middleware/appwriteStaff.js'
import { activateAnalyse, analyseEligibility, deactivateAnalyse, ELIGIBILITY_MESSAGES } from '../../services/analyse.js'
import { getFeatureDoc } from '../../services/siteFeatures.js'

const router = Router()
router.use(requireAppwriteStaff)

function sendError(res, err) {
  const status = [400, 403, 404, 409, 503].includes(err.status) && !err.type ? err.status : 500
  if (status === 500) console.error('[admin-analyse]', err.message)
  res.status(status).json({ error: status === 500 ? 'Die Analyse konnte nicht geändert werden' : err.message })
}

// Lesezugriff fuer das WOMS: Zustand + AVV-Angaben (nie siteKey oder Geheimnisse)
router.get('/:projectId', async (req, res) => {
  try {
    let project
    try {
      project = await getDocument(config.collections.websiteProjects, req.params.projectId)
    } catch (err) {
      if (err.status === 404) return res.status(404).json({ error: 'Projekt nicht gefunden' })
      throw err
    }
    const customerId = project.customerId || ''
    const [doc, eligibility] = await Promise.all([
      customerId ? getFeatureDoc(customerId, project.$id, 'analyse') : null,
      analyseEligibility(customerId, project.$id),
    ])
    res.json({
      enabled: config.analyse.enabled,
      state: doc ? doc.state || 'off' : null,
      accentColor: doc?.accentColor || '#111111',
      avvVersion: config.analyse.avvVersion,
      avvAcceptedAt: doc?.avvAcceptedAt || null,
      avvAcceptedBy: doc?.avvAcceptedBy || null,
      activatedAt: doc?.activatedAt || null,
      offSince: doc?.offSince || null,
      eligible: eligibility.ok,
      reasonText: eligibility.reason ? ELIGIBILITY_MESSAGES[eligibility.reason] : null,
    })
  } catch (err) {
    sendError(res, err)
  }
})

router.post('/:projectId', async (req, res) => {
  try {
    if (!config.analyse.enabled) return res.status(409).json({ error: 'Website-Analyse ist noch nicht freigeschaltet' })
    const { on, avvConfirmedVerbally } = req.body || {}
    if (typeof on !== 'boolean') return res.status(400).json({ error: 'on muss true oder false sein' })
    if (on && avvConfirmedVerbally !== true) {
      return res.status(400).json({ error: 'Bitte bestätigen, dass der Kunde den AVV bestätigt hat' })
    }
    let project
    try {
      project = await getDocument(config.collections.websiteProjects, req.params.projectId)
    } catch (err) {
      if (err.status === 404) return res.status(404).json({ error: 'Projekt nicht gefunden' })
      throw err
    }
    const customerId = project.customerId
    if (!customerId) return res.status(400).json({ error: 'Projekt hat keinen Kunden' })
    const by = String(req.appwriteUser?.name || req.appwriteUser?.email || 'Mitarbeiter').slice(0, 100)
    const { doc } = on
      ? await activateAnalyse({
          customerId,
          projectId: project.$id,
          consent: { accepted: true, avvVersion: config.analyse.avvVersion },
          by,
        })
      : await deactivateAnalyse({ customerId, projectId: project.$id, by })
    res.json({ ok: true, state: doc?.state || 'off' })
  } catch (err) {
    sendError(res, err)
  }
})

export default router