'use server'

import { revalidatePath } from 'next/cache'
import { auth } from '@/lib/auth'
import { supabaseAdmin } from '@/lib/supabaseAdmin'
import { extractYoutubeId } from './utils'

async function requireAdmin() {
  const session = await auth()
  if (!session || (session.user as any)?.role !== 'ADMIN') {
    throw new Error('Yetkisiz erişim')
  }
}

export async function createTutorialAction(formData: FormData) {
  await requireAdmin()

  const title = String(formData.get('title') || '').trim()
  const description = String(formData.get('description') || '').trim()
  const category = String(formData.get('category') || 'basics').trim()
  const categoryLabel = String(formData.get('category_label') || '🚀 Hızlı Başlangıç').trim()
  const duration = String(formData.get('duration') || '03:00').trim()
  const rawYoutube = String(formData.get('youtube_id') || '').trim()
  const youtubeId = extractYoutubeId(rawYoutube)
  const targetView = String(formData.get('target_view') || '').trim() || null
  const targetViewLabel = String(formData.get('target_view_label') || '').trim() || null
  const highlightsRaw = String(formData.get('highlights') || '').trim()
  const sortOrder = parseInt(String(formData.get('sort_order') || '0'), 10) || 0
  const isActive = formData.get('is_active') === 'on' || formData.get('is_active') === 'true'

  const highlights = highlightsRaw
    ? highlightsRaw.split('\n').map((s) => s.trim()).filter(Boolean)
    : []

  if (!title) throw new Error('Video başlığı zorunludur')
  if (!youtubeId) throw new Error('Geçerli bir YouTube video linki veya ID giriniz')

  const { error } = await supabaseAdmin.from('tutorials').insert({
    title,
    description,
    category,
    category_label: categoryLabel,
    duration,
    youtube_id: youtubeId,
    target_view: targetView,
    target_view_label: targetViewLabel,
    highlights,
    sort_order: sortOrder,
    is_active: isActive,
    created_at: new Date().toISOString(),
    updated_at: new Date().toISOString(),
  })

  if (error) {
    throw new Error(`Kayıt hatası: ${error.message}`)
  }

  revalidatePath('/admin/tutorials')
  return { success: true }
}

export async function updateTutorialAction(formData: FormData) {
  await requireAdmin()

  const id = String(formData.get('id') || '').trim()
  if (!id) throw new Error('Video ID eksik')

  const title = String(formData.get('title') || '').trim()
  const description = String(formData.get('description') || '').trim()
  const category = String(formData.get('category') || 'basics').trim()
  const categoryLabel = String(formData.get('category_label') || '🚀 Hızlı Başlangıç').trim()
  const duration = String(formData.get('duration') || '03:00').trim()
  const rawYoutube = String(formData.get('youtube_id') || '').trim()
  const youtubeId = extractYoutubeId(rawYoutube)
  const targetView = String(formData.get('target_view') || '').trim() || null
  const targetViewLabel = String(formData.get('target_view_label') || '').trim() || null
  const highlightsRaw = String(formData.get('highlights') || '').trim()
  const sortOrder = parseInt(String(formData.get('sort_order') || '0'), 10) || 0
  const isActive = formData.get('is_active') === 'on' || formData.get('is_active') === 'true'

  const highlights = highlightsRaw
    ? highlightsRaw.split('\n').map((s) => s.trim()).filter(Boolean)
    : []

  if (!title) throw new Error('Video başlığı zorunludur')
  if (!youtubeId) throw new Error('Geçerli bir YouTube video linki veya ID giriniz')

  const { error } = await supabaseAdmin
    .from('tutorials')
    .update({
      title,
      description,
      category,
      category_label: categoryLabel,
      duration,
      youtube_id: youtubeId,
      target_view: targetView,
      target_view_label: targetViewLabel,
      highlights,
      sort_order: sortOrder,
      is_active: isActive,
      updated_at: new Date().toISOString(),
    })
    .eq('id', id)

  if (error) {
    throw new Error(`Güncelleme hatası: ${error.message}`)
  }

  revalidatePath('/admin/tutorials')
  return { success: true }
}

export async function deleteTutorialAction(id: string) {
  await requireAdmin()

  if (!id) throw new Error('Video ID eksik')

  const { error } = await supabaseAdmin.from('tutorials').delete().eq('id', id)

  if (error) {
    throw new Error(`Silme hatası: ${error.message}`)
  }

  revalidatePath('/admin/tutorials')
  return { success: true }
}

export async function toggleTutorialStatusAction(id: string, newStatus: boolean) {
  await requireAdmin()

  const { error } = await supabaseAdmin
    .from('tutorials')
    .update({ is_active: newStatus, updated_at: new Date().toISOString() })
    .eq('id', id)

  if (error) {
    throw new Error(`Durum güncelleme hatası: ${error.message}`)
  }

  revalidatePath('/admin/tutorials')
  return { success: true }
}