import { Router } from 'express'
import { z } from 'zod'
import { prisma } from '../lib/prisma'
import { requireCompanyAuth } from '../middleware/requireCompanyAuth'
import { requireTenant } from '../middleware/requireTenant'
import { requireSubscription } from '../middleware/requireSubscription'
import { requireRenterAuth } from '../middleware/requireRenterAuth'
import { NotificationType, NotificationChannel } from '@rentaldrivego/database'

const router = Router()

// ─── Company notifications ────────────────────────────────────

const companyAuth = [requireCompanyAuth, requireTenant, requireSubscription]

router.get('/company', ...companyAuth, async (req: any, res: any, next: any) => {
  try {
    const { unread } = req.query as Record<string, string>
    const where: any = { companyId: req.companyId, channel: 'IN_APP' }
    if (unread === 'true') where.readAt = null
    const notifications = await prisma.notification.findMany({ where, orderBy: { createdAt: 'desc' }, take: 50 })
    res.json({ data: notifications })
  } catch (err) { next(err) }
})

router.get('/unread-count', ...companyAuth, async (req: any, res: any, next: any) => {
  try {
    const unread = await prisma.notification.count({
      where: { companyId: req.companyId, channel: 'IN_APP', readAt: null },
    })
    res.json({ data: { unread } })
  } catch (err) { next(err) }
})

router.post('/company/:id/read', ...companyAuth, async (req: any, res: any, next: any) => {
  try {
    await prisma.notification.updateMany({ where: { id: req.params.id, companyId: req.companyId }, data: { readAt: new Date(), status: 'READ' } })
    res.json({ data: { success: true } })
  } catch (err) { next(err) }
})

router.post('/company/read-all', ...companyAuth, async (req: any, res: any, next: any) => {
  try {
    await prisma.notification.updateMany({ where: { companyId: req.companyId, readAt: null }, data: { readAt: new Date(), status: 'READ' } })
    res.json({ data: { success: true } })
  } catch (err) { next(err) }
})

router.get('/company/preferences', ...companyAuth, async (req: any, res: any, next: any) => {
  try {
    const prefs = await prisma.notificationPreference.findMany({ where: { employeeId: req.employee.id } })
    res.json({ data: prefs })
  } catch (err) { next(err) }
})

router.patch('/company/preferences', ...companyAuth, async (req: any, res: any, next: any) => {
  try {
    const body = z.array(z.object({ notificationType: z.string(), channel: z.string(), enabled: z.boolean() })).parse(req.body)
    for (const pref of body) {
      await prisma.notificationPreference.upsert({
        where: { employeeId_notificationType_channel: { employeeId: req.employee.id, notificationType: pref.notificationType as NotificationType, channel: pref.channel as NotificationChannel } },
        create: { employeeId: req.employee.id, notificationType: pref.notificationType as NotificationType, channel: pref.channel as NotificationChannel, enabled: pref.enabled },
        update: { enabled: pref.enabled },
      })
    }
    res.json({ data: { success: true } })
  } catch (err) { next(err) }
})

// ─── Renter notifications ─────────────────────────────────────

router.get('/renter', requireRenterAuth, async (req: any, res: any, next: any) => {
  try {
    const notifications = await prisma.notification.findMany({ where: { renterId: req.renterId, channel: 'IN_APP' }, orderBy: { createdAt: 'desc' }, take: 50 })
    res.json({ data: notifications })
  } catch (err) { next(err) }
})

router.post('/renter/:id/read', requireRenterAuth, async (req: any, res: any, next: any) => {
  try {
    await prisma.notification.updateMany({ where: { id: req.params.id, renterId: req.renterId }, data: { readAt: new Date(), status: 'READ' } })
    res.json({ data: { success: true } })
  } catch (err) { next(err) }
})

router.post('/renter/read-all', requireRenterAuth, async (req: any, res: any, next: any) => {
  try {
    await prisma.notification.updateMany({
      where: { renterId: req.renterId, channel: 'IN_APP', readAt: null },
      data: { readAt: new Date(), status: 'READ' },
    })
    res.json({ data: { success: true } })
  } catch (err) { next(err) }
})

router.get('/renter/preferences', requireRenterAuth, async (req: any, res: any, next: any) => {
  try {
    const prefs = await prisma.notificationPreference.findMany({ where: { renterId: req.renterId } })
    res.json({ data: prefs })
  } catch (err) { next(err) }
})

router.patch('/renter/preferences', requireRenterAuth, async (req: any, res: any, next: any) => {
  try {
    const body = z.array(z.object({ notificationType: z.string(), channel: z.string(), enabled: z.boolean() })).parse(req.body)
    for (const pref of body) {
      await prisma.notificationPreference.upsert({
        where: {
          renterId_notificationType_channel: {
            renterId: req.renterId,
            notificationType: pref.notificationType as NotificationType,
            channel: pref.channel as NotificationChannel,
          },
        },
        create: {
          renterId: req.renterId,
          notificationType: pref.notificationType as NotificationType,
          channel: pref.channel as NotificationChannel,
          enabled: pref.enabled,
        },
        update: { enabled: pref.enabled },
      })
    }
    res.json({ data: { success: true } })
  } catch (err) { next(err) }
})

export default router