import configPromise from '@payload-config'
import { getPayload } from 'payload'

import { draftMode } from 'next/headers'
import { notFound } from 'next/navigation'

import NextApp from '@/spa/NextApp'
import { normalizeApplicationPhaseData, type SpaApplicationPhaseData } from '@/spa/applicationPhase'
import { normalizeFooterData, normalizeHeaderData } from '@/spa/cmsNavigation'
import type { CmsRouteCollection, CmsRouteDoc } from '@/spa/cmsRoute'
import { normalizeNewsletterFormData, type SpaNewsletterFormData } from '@/spa/newsletterForm'
import { normalizeSiteSettings, type SpaSiteSettingsData } from '@/spa/siteSettings'

export const dynamic = 'force-dynamic'

type Args = {
  params: Promise<{ slug?: string[] }>
}

type RouteCollection = Exclude<CmsRouteCollection, 'partners' | 'jury-mitglieder'>

function routeTarget(pathname: string): { collection: RouteCollection; slug: string } {
  const parts = pathname.split('/').filter(Boolean)

  if (parts[0] === 'preistraeger' && parts[1]) {
    return { collection: 'preistraeger', slug: parts[1] }
  }

  if (parts[0] === 'presse' && parts[1] === 'events' && parts[2]) {
    return { collection: 'events', slug: parts[2] }
  }

  if (parts[0] === 'presse' && parts[1] === 'blog' && parts[2]) {
    return { collection: 'posts', slug: parts[2] }
  }

  return { collection: 'pages', slug: pathname === '/' ? 'startseite' : parts.join('-') }
}

async function findRouteDoc(payload: Awaited<ReturnType<typeof getPayload>>, pathname: string, draft: boolean) {
  const target = routeTarget(pathname)
  const result = await payload.find({
    collection: target.collection,
    depth: 1,
    draft,
    overrideAccess: draft,
    limit: 1,
    pagination: false,
    where: {
      or: [
        { spaPath: { equals: pathname } },
        { slug: { equals: target.slug } },
      ],
    },
  })

  const doc = result.docs[0]
  return doc ? { collection: target.collection, doc } : undefined
}

async function findList(payload: Awaited<ReturnType<typeof getPayload>>, collection: CmsRouteCollection, draft: boolean) {
  const result = await payload.find({
    collection,
    depth: 1,
    draft,
    overrideAccess: draft,
    limit: 300,
    pagination: false,
    ...(collection === 'partners' || collection === 'jury-mitglieder' ? { sort: 'sortOrder' } : {}),
  })

  return result.docs
}

async function findSupportPages(payload: Awaited<ReturnType<typeof getPayload>>, draft: boolean) {
  const result = await payload.find({
    collection: 'pages',
    depth: 1,
    draft,
    overrideAccess: draft,
    limit: 10,
    pagination: false,
    where: {
      or: [
        { spaPath: { equals: '/' } },
        { slug: { equals: 'startseite' } },
        { slug: { equals: 'home' } },
        { spaPath: { equals: '/netzwerk' } },
        { slug: { equals: 'netzwerk' } },
        { slug: { equals: 'network' } },
      ],
    },
  })

  return result.docs
}

export default async function Page({ params }: Args) {
  const { slug = [] } = await params
  const pathname = `/${slug.join('/')}`.replace(/\/$/, '') || '/'
  const payload = await getPayload({ config: configPromise })
  const { isEnabled: draft } = await draftMode()
  const [
    header,
    footer,
    siteSettings,
    applicationPhase,
    newsletterForm,
    route,
    supportPages,
    preistraeger,
    events,
    posts,
    partners,
    juryMitglieder,
  ] = await Promise.all([
    payload.findGlobal({ slug: 'header', depth: 1 }).catch(() => undefined),
    payload.findGlobal({ slug: 'footer', depth: 1 }).catch(() => undefined),
    payload.findGlobal({ slug: 'site-settings', depth: 1 }).catch(() => undefined),
    payload.findGlobal({ slug: 'application-phase', depth: 0 }).catch(() => undefined),
    payload.findGlobal({ slug: 'newsletter-form', depth: 0 }).catch(() => undefined),
    findRouteDoc(payload, pathname, draft),
    findSupportPages(payload, draft).catch(() => []),
    findList(payload, 'preistraeger', draft).catch(() => []),
    findList(payload, 'events', draft).catch(() => []),
    findList(payload, 'posts', draft).catch(() => []),
    findList(payload, 'partners', draft).catch(() => []),
    findList(payload, 'jury-mitglieder', draft).catch(() => []),
  ])

  if (!route) notFound()

  return (
    <NextApp
      pathname={pathname}
      header={normalizeHeaderData(header)}
      footer={normalizeFooterData(footer)}
      siteSettings={normalizeSiteSettings(siteSettings as Partial<SpaSiteSettingsData> | undefined)}
      applicationPhase={normalizeApplicationPhaseData(applicationPhase as Partial<SpaApplicationPhaseData> | undefined)}
      newsletterForm={normalizeNewsletterFormData(newsletterForm as Partial<SpaNewsletterFormData> | undefined)}
      cmsRoute={{
        collection: route.collection,
        doc: route.doc as unknown as CmsRouteDoc,
        lists: {
          pages: supportPages as unknown as CmsRouteDoc[],
          preistraeger: preistraeger as unknown as CmsRouteDoc[],
          events: events as unknown as CmsRouteDoc[],
          posts: posts as unknown as CmsRouteDoc[],
          partners: partners as unknown as CmsRouteDoc[],
          'jury-mitglieder': juryMitglieder as unknown as CmsRouteDoc[],
        },
      }}
    />
  )
}