"use server"

import { redirect } from "next/navigation"

import { mockDb } from '@/lib/mockDb'
import { uploadToOpeninary } from '@/lib/openinary'
import { revalidatePath } from 'next/cache'

export async function submitBusinessAction(formData: FormData) {
  const businessName = formData.get('businessName') as string
  const categoryId = formData.get('categoryId') as string
  const neighborhoodId = formData.get('neighborhoodId') as string
  const address = formData.get('address') as string
  const phone = formData.get('phone') as string
  const whatsapp = formData.get('whatsapp') as string
  const description = formData.get('description') as string
  const contactName = formData.get('contactName') as string
  const contactEmail = formData.get('contactEmail') as string
  const imageFile = formData.get('imageFile') as File | null

  if (!businessName || !categoryId || !neighborhoodId || !address || !description || !contactName || !contactEmail) {
    return { error: 'Lütfen tüm zorunlu alanları doldurun.' }
  }

  let imageUrl = null
  if (imageFile && imageFile.size > 0) {
    try {
      imageUrl = await uploadToOpeninary(imageFile, 'submissions')
    } catch (e: any) {
      console.error('Openinary upload error:', e)
      return { error: `Görsel yüklenemedi: ${e.message}` }
    }
  }

  await mockDb.createSubmission({
    businessName,
    categoryId,
    neighborhoodId,
    address,
    phone,
    whatsapp,
    description,
    contactName,
    contactEmail,
    imageUrl
  })

  revalidatePath('/admin/submissions')
  return { success: true, error: undefined }
}

export async function submitContactMessageAction(formData: FormData) {
  const name = formData.get('name') as string
  const email = formData.get('email') as string
  const subject = formData.get('subject') as string
  const message = formData.get('message') as string

  if (!name || !email || !subject || !message) {
    return { error: 'Lütfen tüm alanları doldurun.' }
  }

  await mockDb.createMessage({
    name,
    email,
    subject,
    message
  })

  revalidatePath('/admin/messages')
  return { success: true, error: undefined }
}

export async function approveSubmissionAction(id: string) {
  const submission = await mockDb.getSubmissionById(id)
  if (!submission) return { error: 'Başvuru bulunamadı' }

  const slug = submission.businessName.toLowerCase()
    .replace(/[^a-z0-9\s-]/g, '')
    .replace(/\s+/g, '-')

  await mockDb.createListing({
    slug,
    categoryId: submission.categoryId,
    neighborhoodId: submission.neighborhoodId,
    city: 'marmaris',
    nameTr: submission.businessName,
    nameEn: submission.businessName,
    nameRu: submission.businessName,
    descriptionTr: submission.description,
    descriptionEn: submission.description,
    descriptionRu: submission.description,
    address: submission.address,
    phone: submission.phone,
    whatsapp: submission.whatsapp,
    priceRange: 2,
    rating: 5.0,
    isLocalApproved: false,
    isFeatured: false,
    hasWidgetInstalled: false,
    images: submission.imageUrl ? [submission.imageUrl] : []
  })

  await mockDb.updateSubmissionStatus(id, 'APPROVED')
  
  revalidatePath('/admin/submissions')
  revalidatePath('/restaurants')
  revalidatePath('/aparts')
  revalidatePath('/businesses')
  return { success: true, error: undefined }
}

export async function rejectSubmissionAction(id: string) {
  await mockDb.updateSubmissionStatus(id, 'REJECTED')
  revalidatePath('/admin/submissions')
  return { success: true, error: undefined }
}

export async function deleteListingAction(id: string) {
  await mockDb.deleteListing(id)
  revalidatePath('/admin/listings')
  revalidatePath('/restaurants')
  revalidatePath('/aparts')
  revalidatePath('/businesses')
  return { success: true, error: undefined }
}

export async function restoreListingAction(id: string) {
  await mockDb.restoreListing(id)
  revalidatePath('/admin/trash')
  revalidatePath('/admin/listings')
  return { success: true, error: undefined }
}

export async function hardDeleteListingAction(id: string) {
  try {
    await mockDb.hardDeleteListing(id)
    revalidatePath('/admin/trash')
    return { success: true, error: undefined }
  } catch (err: any) {
    if (err.message?.includes('RESTRICT') || err.message?.includes('Foreign key constraint')) {
      return { success: false, error: 'Silme başarısız: Bu mekana bağlı etkinlik (Event) veya kayıtlar var.' }
    }
    return { success: false, error: err.message || 'Bilinmeyen bir hata oluştu.' }
  }
}

export async function markMessageReadAction(id: string) {
  await mockDb.markMessageAsRead(id)
  revalidatePath('/admin/messages')
  return { success: true, error: undefined }
}

export async function createOrUpdateListingAction(formData: FormData) {
  const id = formData.get('id') as string | null
  const slug = formData.get('slug') as string
  const categoryId = formData.get('categoryId') as string
  const neighborhoodId = formData.get('neighborhoodId') as string
  
  const nameTr = formData.get('nameTr') as string
  const nameEn = formData.get('nameEn') as string
  const nameRu = formData.get('nameRu') as string
  
  const descriptionTr = formData.get('descriptionTr') as string
  const descriptionEn = formData.get('descriptionEn') as string
  const descriptionRu = formData.get('descriptionRu') as string
  
  const address = formData.get('address') as string
  const phone = formData.get('phone') as string || null
  const whatsapp = formData.get('whatsapp') as string || null
  const website = formData.get('website') as string || null
  const instagram = formData.get('instagram') as string || null
  
  const priceRange = parseInt(formData.get('priceRange') as string)
  const rating = formData.get('rating') ? parseFloat(formData.get('rating') as string) : null
  const isLocalApproved = formData.get('isLocalApproved') === 'true'
  const isFeatured = formData.get('isFeatured') === 'true'
  
  const latitude = formData.get('latitude') ? parseFloat(formData.get('latitude') as string) : null
  const longitude = formData.get('longitude') ? parseFloat(formData.get('longitude') as string) : null
  
  const openingHoursStr = formData.get('openingHours') as string
  const openingHours = openingHoursStr ? { all: openingHoursStr } : null

  // Handle images
  const images: string[] = []
  
  const imageFile1 = formData.get('imageFile1') as File | null
  const imageUrl1 = formData.get('imageUrl1') as string | null
  const imageFile2 = formData.get('imageFile2') as File | null
  const imageUrl2 = formData.get('imageUrl2') as string | null

  // Process first image
  if (imageFile1 && imageFile1.size > 0) {
    try {
      const url = await uploadToOpeninary(imageFile1, `listings/${slug}`)
      images.push(url)
    } catch (e: any) {
      console.error('Image 1 upload error:', e)
      return { success: false, error: `1. Görsel yüklenemedi: ${e.message}` }
    }
  } else if (imageUrl1) {
    images.push(imageUrl1)
  }

  // Process second image
  if (imageFile2 && imageFile2.size > 0) {
    try {
      const url = await uploadToOpeninary(imageFile2, `listings/${slug}`)
      images.push(url)
    } catch (e: any) {
      console.error('Image 2 upload error:', e)
      return { success: false, error: `2. Görsel yüklenemedi: ${e.message}` }
    }
  } else if (imageUrl2) {
    images.push(imageUrl2)
  }

  const data = {
    slug,
    categoryId,
    neighborhoodId,
    city: 'marmaris',
    nameTr,
    nameEn,
    nameRu,
    descriptionTr,
    descriptionEn,
    descriptionRu,
    address,
    phone,
    whatsapp,
    website,
    instagram,
    priceRange,
    rating,
    isLocalApproved,
    isFeatured,
    latitude,
    longitude,
    openingHours,
    images,
    hasWidgetInstalled: false
  }

  try {
    if (id && id !== 'new') {
      await mockDb.updateListing(id, data)
    } else {
      await mockDb.createListing(data)
    }
    revalidatePath('/admin/listings')
    revalidatePath('/restaurants')
    revalidatePath('/aparts')
    revalidatePath('/businesses')
    return { success: true, error: undefined }
  } catch (err: any) {
    return { success: false, error: err.message || 'Mekan kaydedilemedi.' }
  }
}

// Blog Actions
export async function deleteBlogPostAction(id: string) {
  await mockDb.deleteBlogPost(id)
  revalidatePath('/admin/blog')
  revalidatePath('/blog')
  return { success: true, error: undefined }
}

export async function createOrUpdateBlogPostAction(formData: FormData) {
  const id = formData.get('id') as string | null
  const slug = formData.get('slug') as string
  const titleTr = formData.get('titleTr') as string
  const titleEn = formData.get('titleEn') as string
  const titleRu = formData.get('titleRu') as string
  const contentTr = formData.get('contentTr') as string
  const contentEn = formData.get('contentEn') as string
  const contentRu = formData.get('contentRu') as string
  
  const tagsStr = formData.get('tags') as string || ''
  const tags = tagsStr.split(',').map(t => t.trim()).filter(Boolean)
  
  const relatedListingIdsStr = formData.get('relatedListingIds') as string || ''
  const relatedListingIds = relatedListingIdsStr.split(',').map(i => i.trim()).filter(Boolean)
  
  const isPublished = formData.get('isPublished') === 'true'
  const publishedAt = isPublished ? new Date() : null

  // Handle Cover Image
  const coverImageFile = formData.get('coverImageFile') as File | null
  let coverImage = formData.get('coverImageUrl') as string | null || null

  if (coverImageFile && coverImageFile.size > 0) {
    try {
      coverImage = await uploadToOpeninary(coverImageFile, `blog/${slug}`)
    } catch (e: any) {
      console.error('Blog cover upload error:', e)
      return { success: false, error: `Kapak görseli yüklenemedi: ${e.message}` }
    }
  }

  const data = {
    slug,
    titleTr,
    titleEn,
    titleRu,
    contentTr,
    contentEn,
    contentRu,
    coverImage,
    tags,
    relatedListingIds,
    publishedAt
  }

  try {
    if (id && id !== 'new') {
      await mockDb.updateBlogPost(id, data)
    } else {
      await mockDb.createBlogPost(data)
    }
    revalidatePath('/admin/blog')
    revalidatePath('/blog')
    revalidatePath(`/blog/${slug}`)
    return { success: true, error: undefined }
  } catch (err: any) {
    return { success: false, error: err.message || 'Yazı kaydedilemedi.' }
  }
}

// Collections Actions
export async function deleteCollectionAction(id: string) {
  await mockDb.deleteCollection(id)
  revalidatePath('/admin/collections')
  revalidatePath('/collections')
  return { success: true, error: undefined }
}

export async function createOrUpdateCollectionAction(formData: FormData) {
  const id = formData.get('id') as string | null
  const slug = formData.get('slug') as string
  const titleTr = formData.get('titleTr') as string
  const titleEn = formData.get('titleEn') as string
  const titleRu = formData.get('titleRu') as string
  const descriptionTr = formData.get('descriptionTr') as string
  const descriptionEn = formData.get('descriptionEn') as string
  const descriptionRu = formData.get('descriptionRu') as string

  const listingIdsStr = formData.get('listingIds') as string || ''
  const listingIds = listingIdsStr.split(',').map(i => i.trim()).filter(Boolean)

  // Handle Cover Image
  const coverImageFile = formData.get('coverImageFile') as File | null
  let coverImage = formData.get('coverImageUrl') as string | null || null

  if (coverImageFile && coverImageFile.size > 0) {
    try {
      coverImage = await uploadToOpeninary(coverImageFile, `collections/${slug}`)
    } catch (e: any) {
      console.error('Collection cover upload error:', e)
      return { success: false, error: `Kapak görseli yüklenemedi: ${e.message}` }
    }
  }

  const data = {
    slug,
    titleTr,
    titleEn,
    titleRu,
    descriptionTr,
    descriptionEn,
    descriptionRu,
    coverImage,
    listingIds
  }

  try {
    if (id && id !== 'new') {
      await mockDb.updateCollection(id, data)
    } else {
      await mockDb.createCollection(data)
    }
    revalidatePath('/admin/collections')
    revalidatePath('/collections')
    revalidatePath(`/collection/${slug}`)
    return { success: true, error: undefined }
  } catch (err: any) {
    return { success: false, error: err.message || 'Koleksiyon kaydedilemedi.' }
  }
}

// Events Actions (Phase 3)
export async function deleteEventAction(id: string) {
  await mockDb.deleteEvent(id)
  revalidatePath('/admin/events')
  revalidatePath('/events')
  return { success: true, error: undefined }
}

export async function createOrUpdateEventAction(formData: FormData) {
  const id = formData.get('id') as string | null
  const slug = formData.get('slug') as string
  const listingId = formData.get('listingId') as string | null || null
  const titleTr = formData.get('titleTr') as string
  const titleEn = formData.get('titleEn') as string
  const titleRu = formData.get('titleRu') as string
  const descriptionTr = formData.get('descriptionTr') as string
  const descriptionEn = formData.get('descriptionEn') as string
  const descriptionRu = formData.get('descriptionRu') as string
  
  const startDateStr = formData.get('startDate') as string
  const endDateStr = formData.get('endDate') as string | null
  const isSponsored = formData.get('isSponsored') === 'true'

  const startDate = new Date(startDateStr)
  const endDate = endDateStr ? new Date(endDateStr) : null

  // Handle Cover Image
  const coverImageFile = formData.get('coverImageFile') as File | null
  let coverImage = formData.get('coverImageUrl') as string | null || null

  if (coverImageFile && coverImageFile.size > 0) {
    try {
      coverImage = await uploadToOpeninary(coverImageFile, `events/${slug}`)
    } catch (e: any) {
      console.error('Event cover upload error:', e)
      return { success: false, error: `Kapak görseli yüklenemedi: ${e.message}` }
    }
  }

  const data = {
    slug,
    listingId,
    titleTr,
    titleEn,
    titleRu,
    descriptionTr,
    descriptionEn,
    descriptionRu,
    startDate,
    endDate,
    coverImage,
    isSponsored
  }

  try {
    if (id && id !== 'new') {
      await mockDb.updateEvent(id, data)
    } else {
      await mockDb.createEvent(data)
    }
    revalidatePath('/admin/events')
    revalidatePath('/events')
    revalidatePath(`/event/${slug}`)
    return { success: true, error: undefined }
  } catch (err: any) {
    return { success: false, error: err.message || 'Etkinlik kaydedilemedi.' }
  }
}
// Neighborhood Actions
export async function deleteNeighborhoodAction(id: string) {
  try {
    const listings = await mockDb.getListings({ neighborhoodId: id })
    if (listings && listings.length > 0) {
      return { success: false, error: `Silme başarısız: Bu mahalleye kayıtlı ${listings.length} adet mekan var.` }
    }
    
    await mockDb.deleteNeighborhood(id)
    revalidatePath('/admin/neighborhoods')
    return { success: true, error: undefined }
  } catch (err: any) {
    if (err.message?.includes('RESTRICT') || err.message?.includes('Foreign key constraint')) {
      return { success: false, error: 'Silme başarısız: Bu mahalleye bağlı gizli (silinmiş veya arşivlenmiş) mekanlar veya etkinlikler var.' }
    }
    return { success: false, error: err.message || 'Bilinmeyen bir hata oluştu.' }
  }
}

export async function createOrUpdateNeighborhoodAction(formData: FormData) {
  const id = formData.get('id') as string | null
  const slug = formData.get('slug') as string
  const nameTr = formData.get('nameTr') as string
  const nameEn = formData.get('nameEn') as string
  const nameRu = formData.get('nameRu') as string

  if (!slug || !nameTr || !nameEn || !nameRu) {
    return { error: 'Zorunlu alanları doldurun.' }
  }

  const data = {
    slug,
    nameTr,
    nameEn,
    nameRu,
  }

  try {
    if (id && id !== 'new') {
      await mockDb.updateNeighborhood(id, data)
    } else {
      await mockDb.createNeighborhood(data)
    }
    revalidatePath('/admin/neighborhoods')
    return { success: true, error: undefined }
  } catch (err: any) {
    return { success: false, error: err.message || 'Mahalle kaydedilemedi.' }
  }
}

// AI Itinerary Planner Actions (Phase 3)
import crypto from 'crypto'

async function generateMockItinerary(days: number, style: string, neighborhoodSlugs: string[]) {
  const allListings = await mockDb.getListings()
  const matchingListings = allListings.filter(l => 
    !l.deletedAt && l.isLocalApproved &&
    (neighborhoodSlugs.length === 0 || 
     (l.neighborhood && neighborhoodSlugs.includes(l.neighborhood.slug)))
  )
  
  const pool = matchingListings.length > 0 ? matchingListings : allListings.filter(l => !l.deletedAt && l.isLocalApproved)

  let md = `# marmaris local kişisel gezi rotası 🌴\n\n`
  md += `**gün sayısı:** ${days} gün | **gezi tarzı:** ${style === 'gastronomy' ? 'gurme' : style === 'relaxation' ? 'dinlenme' : 'macera'} | **keşif bölgeleri:** ${neighborhoodSlugs.join(', ')}\n\n`
  md += `bu rota, marmaris local topluluğu tarafından onaylanmış yerel işletmeler temel alınarak oluşturulmuştur.\n\n---\n\n`

  for (let day = 1; day <= days; day++) {
    md += `## 🗓️ gün ${day}\n\n`
    
    const dayListings = [...pool].sort(() => 0.5 - Math.random()).slice(0, 3)
    
    if (dayListings.length >= 1) {
      md += `### 🌅 sabah: kahvaltı ve başlangıç\n`
      md += `güne yerel onaylı **[${dayListings[0].nameTr}](/${dayListings[0].category?.slug || 'isletme'}/${dayListings[0].slug})** işletmesinde başlayın. \n`
      md += `> **yerel ipucu:** ${dayListings[0].descriptionTr}\n\n`
    }
    
    if (dayListings.length >= 2) {
      md += `### ☀️ öğle: keşif zamanı\n`
      md += `öğleden sonra **[${dayListings[1].nameTr}](/${dayListings[1].category?.slug || 'isletme'}/${dayListings[1].slug})** mekanına uğrayın ve çevreyi keşfedin.\n`
      md += `> **editör notu:** ${dayListings[1].address}\n\n`
    }

    if (dayListings.length >= 3) {
      md += `### 🌌 akşam: gün batımı ve akşam yemeği\n`
      md += `akşamı şık bir akşam yemeğiyle taçlandırın: **[${dayListings[2].nameTr}](/${dayListings[2].category?.slug || 'isletme'}/${dayListings[2].slug})**.\n`
      md += `> **özel detaylar:** rating: ★${dayListings[2].rating} • tel: ${dayListings[2].phone || 'belirtilmemiş'}\n\n`
    }

    md += `---\n\n`
  }

  md += `*not: seyahatiniz boyunca yerel rehberimizdeki işletmeleri ziyaret etmeyi ve favorilerinize eklemeyi unutmayın!*`
  
  return {
    content: md,
    listingIds: pool.map(l => l.id)
  }
}

export async function generateItineraryAction(days: number, style: string, neighborhoodSlugs: string[]) {
  const sorted = [...neighborhoodSlugs].sort()
  const paramsHash = crypto.createHash('md5').update(JSON.stringify({ days, style, neighborhoodSlugs: sorted })).digest('hex')

  const existing = await mockDb.getItineraryByHash(paramsHash)
  if (existing) {
    return { success: true, id: existing.id }
  }

  // Generate new program
  const { content, listingIds } = await generateMockItinerary(days, style, sorted)

  const newItin = await mockDb.createItinerary({
    paramsHash,
    params: { days, style, neighborhoodSlugs: sorted },
    content,
    listingIds
  })

  return { success: true, id: newItin.id }
}



export async function createOrUpdateCategoryAction(formData: FormData) {
  const id = formData.get('id') as string
  const slug = formData.get('slug') as string
  const nameTr = formData.get('nameTr') as string
  const nameEn = formData.get('nameEn') as string
  const nameRu = formData.get('nameRu') as string

  if (!slug || !nameTr || !nameEn || !nameRu) {
    throw new Error('Eksik alanlar var')
  }

  if (id && id !== 'new') {
    await mockDb.updateCategory(id, { slug, nameTr, nameEn, nameRu })
  } else {
    await mockDb.createCategory({ slug, nameTr, nameEn, nameRu })
  }

  revalidatePath('/admin/categories')
  redirect('/tr/admin/categories')
}

export async function deleteCategoryAction(formData: FormData) {
  const id = formData.get('id') as string
  if (!id) return
  await mockDb.deleteCategory(id)
  revalidatePath('/admin/categories')
}

export async function deleteSubmissionAction(id: string) {
  await mockDb.deleteSubmission(id)
  revalidatePath('/admin/submissions')
  return { success: true, error: undefined }
}

export async function deleteMessageAction(id: string) {
  await mockDb.deleteMessage(id)
  revalidatePath('/admin/messages')
  return { success: true, error: undefined }
}

export async function searchListingsAction(query: string) {
  if (!query || query.length < 2) return []
  
  const allListings = await mockDb.getListings()
  const q = query.toLowerCase()
  
  const results = allListings.filter(l => 
    !l.deletedAt && (
      l.nameTr.toLowerCase().includes(q) ||
      l.nameEn?.toLowerCase().includes(q) ||
      l.nameRu?.toLowerCase().includes(q)
    )
  ).slice(0, 5) // Return max 5 suggestions
  
  return results.map(l => ({
    id: l.id,
    nameTr: l.nameTr,
    nameEn: l.nameEn,
    nameRu: l.nameRu,
    slug: l.slug,
    categorySlug: l.category?.slug || 'restoran'
  }))
}


export async function saveWidgetPartnerAction(formData: FormData) {
  const id = formData.get('id') as string | null
  const name = formData.get('name') as string
  const url = formData.get('url') as string
  const neighborhoodSlug = formData.get('neighborhoodSlug') as string | null
  const isActive = formData.get('isActive') === 'true'
  const isHidden = formData.get('isHidden') === 'true'

  if (!name || !url) {
    return { error: 'Lütfen zorunlu alanları doldurun.' }
  }

  const data = {
    name,
    url,
    neighborhoodSlug: neighborhoodSlug || null,
    isActive,
    isHidden
  }

  try {
    if (id && id !== 'new') {
      await mockDb.updateWidgetPartner(id, data)
    } else {
      await mockDb.createWidgetPartner(data)
    }
    revalidatePath('/admin/widget-partners')
    return { success: true, error: undefined }
  } catch (error: any) {
    return { error: error.message || 'Bir hata oluştu.' }
  }
}

export async function deleteWidgetPartnerAction(id: string) {
  await mockDb.deleteWidgetPartner(id)
  revalidatePath('/admin/widget-partners')
  return { success: true, error: undefined }
}