export interface Publication {
  id: number
  title: string
  author: string | null
  osdb_pub_id: string
  image_url: string | null
  created_at: string
  updated_at: string
}

export interface PublicationWriteDTO {
  title: string
  author?: string | null
  osdb_pub_id: string
}

export interface PublicationFruit {
  fruit_id: number
  name: string
  osdb_number: string
}

export interface PublicationDescription {
  id: number
  publication_id: number
  fruit_id: number
  fruit_name: string
  publication_title: string
  url: string
  created_at: string
}

export interface PublicationFruitImage {
  id: number
  publication_id: number
  publication_title: string
  publication_author: string | null
  fruit_id: number
  filename: string | null
  image_type: string
  url: string
  created_at: string
}

export function pubImageUrl(pubId: number): string {
  return `/api/v1/publications/${pubId}/image`
}

export function pubDescriptionUrl(pubId: number, descId: number): string {
  return `/api/v1/publications/${pubId}/descriptions/${descId}`
}

export function pubFruitImageUrl(pubId: number, imgId: number): string {
  return `/api/v1/publications/${pubId}/fruit-images/${imgId}`
}

async function checkOk(res: Response): Promise<Response> {
  if (!res.ok) {
    let msg = `${res.status}`
    try {
      const body = await res.json()
      msg = body.error ?? body.errors?.join(', ') ?? msg
    } catch {
      // ignore
    }
    const err = new Error(msg) as Error & { status: number }
    err.status = res.status
    throw err
  }
  return res
}

export async function listPublications(): Promise<Publication[]> {
  const res = await fetch('/api/v1/publications')
  return (await checkOk(res)).json()
}

export async function getPublication(id: number): Promise<Publication> {
  const res = await fetch(`/api/v1/publications/${id}`)
  return (await checkOk(res)).json()
}

export async function createPublication(dto: PublicationWriteDTO): Promise<Publication> {
  const res = await fetch('/api/v1/publications', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(dto),
  })
  return (await checkOk(res)).json()
}

export async function updatePublication(id: number, dto: PublicationWriteDTO): Promise<Publication> {
  const res = await fetch(`/api/v1/publications/${id}`, {
    method: 'PUT',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(dto),
  })
  return (await checkOk(res)).json()
}

export async function deletePublication(id: number): Promise<void> {
  const res = await fetch(`/api/v1/publications/${id}`, { method: 'DELETE' })
  await checkOk(res)
}

export async function uploadCoverImage(pubId: number, file: File): Promise<void> {
  const form = new FormData()
  form.append('image', file)
  const res = await fetch(`/api/v1/publications/${pubId}/image`, { method: 'POST', body: form })
  await checkOk(res)
}

export async function deleteCoverImage(pubId: number): Promise<void> {
  const res = await fetch(`/api/v1/publications/${pubId}/image`, { method: 'DELETE' })
  await checkOk(res)
}

export async function listPubFruits(pubId: number): Promise<PublicationFruit[]> {
  const res = await fetch(`/api/v1/publications/${pubId}/fruits`)
  return (await checkOk(res)).json()
}

export async function linkFruit(pubId: number, fruitId: number): Promise<void> {
  const res = await fetch(`/api/v1/publications/${pubId}/fruits`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ fruit_id: fruitId }),
  })
  await checkOk(res)
}

export async function unlinkFruit(pubId: number, fruitId: number): Promise<void> {
  const res = await fetch(`/api/v1/publications/${pubId}/fruits/${fruitId}`, { method: 'DELETE' })
  await checkOk(res)
}

export async function listDescriptions(pubId: number): Promise<PublicationDescription[]> {
  const res = await fetch(`/api/v1/publications/${pubId}/descriptions`)
  return (await checkOk(res)).json()
}

export async function uploadDescription(pubId: number, fruitId: number, file: File): Promise<PublicationDescription> {
  const form = new FormData()
  form.append('pdf', file)
  form.append('fruit_id', String(fruitId))
  const res = await fetch(`/api/v1/publications/${pubId}/descriptions`, { method: 'POST', body: form })
  return (await checkOk(res)).json()
}

export async function deleteDescription(pubId: number, descId: number): Promise<void> {
  const res = await fetch(`/api/v1/publications/${pubId}/descriptions/${descId}`, { method: 'DELETE' })
  await checkOk(res)
}

export async function listPubFruitImages(pubId: number): Promise<PublicationFruitImage[]> {
  const res = await fetch(`/api/v1/publications/${pubId}/fruit-images`)
  return (await checkOk(res)).json()
}

export async function uploadPubFruitImage(pubId: number, fruitId: number, file: File): Promise<PublicationFruitImage> {
  const form = new FormData()
  form.append('image', file)
  form.append('fruit_id', String(fruitId))
  const res = await fetch(`/api/v1/publications/${pubId}/fruit-images`, { method: 'POST', body: form })
  return (await checkOk(res)).json()
}

export async function deletePubFruitImage(pubId: number, imgId: number): Promise<void> {
  const res = await fetch(`/api/v1/publications/${pubId}/fruit-images/${imgId}`, { method: 'DELETE' })
  await checkOk(res)
}

export async function getFruitDescriptions(fruitId: number): Promise<PublicationDescription[]> {
  const res = await fetch(`/api/v1/fruits/${fruitId}/descriptions`)
  return (await checkOk(res)).json()
}

export async function getFruitPublicationImages(fruitId: number): Promise<PublicationFruitImage[]> {
  const res = await fetch(`/api/v1/fruits/${fruitId}/publication-images`)
  return (await checkOk(res)).json()
}