import {z} from 'zod'

export type CreateApiBatchArgs = {body: {data: {id: string, type: 'batch', attributes: {created_at?: string | undefined, closed_at?: (string | null) | undefined, closed?: boolean | undefined, send_confirmation_email?: boolean | undefined}, relationships?: ({audio?: ({data: Array<{id: string, type: 'audio'}>, links?: {related: string} | undefined}) | undefined, graphic?: ({data: Array<{id: string, type: 'graphic'}>, links?: {related: string} | undefined}) | undefined, 'multipart-upload'?: ({data: Array<{id: string, type: 'batch-multipart-upload'}>, links?: {related: string} | undefined}) | undefined, news?: ({data: Array<{id: string, type: 'news'}>, links?: {related: string} | undefined}) | undefined, photo?: ({data: Array<{id: string, type: 'photo'}>, links?: {related: string} | undefined}) | undefined, 'publication-issue'?: ({data: Array<{id: string, type: 'publication-issue'}>, links?: {related: string} | undefined}) | undefined, upload?: ({data: Array<{id: string, type: 'batch-upload'}>, links?: {related: string} | undefined}) | undefined, video?: ({data: Array<{id: string, type: 'video'}>, links?: {related: string} | undefined}) | undefined}) | undefined}}};

export type CreateApiBatchOptions = {baseUrl?: string | undefined, DVIDS?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiBatchResponse = z.object({data: z.object({id: z.string(), type: z.literal("batch"), attributes: z.object({created_at: z.string().optional(), closed_at: z.string().nullable().optional(), closed: z.boolean().optional(), send_confirmation_email: z.boolean().optional()}), relationships: z.object({audio: z.object({data: z.array(z.object({id: z.string(), type: z.literal("audio")})), links: z.object({related: z.string()}).optional()}).optional(), graphic: z.object({data: z.array(z.object({id: z.string(), type: z.literal("graphic")})), links: z.object({related: z.string()}).optional()}).optional(), "multipart-upload": z.object({data: z.array(z.object({id: z.string(), type: z.literal("batch-multipart-upload")})), links: z.object({related: z.string()}).optional()}).optional(), news: z.object({data: z.array(z.object({id: z.string(), type: z.literal("news")})), links: z.object({related: z.string()}).optional()}).optional(), photo: z.object({data: z.array(z.object({id: z.string(), type: z.literal("photo")})), links: z.object({related: z.string()}).optional()}).optional(), "publication-issue": z.object({data: z.array(z.object({id: z.string(), type: z.literal("publication-issue")})), links: z.object({related: z.string()}).optional()}).optional(), upload: z.object({data: z.array(z.object({id: z.string(), type: z.literal("batch-upload")})), links: z.object({related: z.string()}).optional()}).optional(), video: z.object({data: z.array(z.object({id: z.string(), type: z.literal("video")})), links: z.object({related: z.string()}).optional()}).optional()}).optional()})});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Create a new batch to submit media assets.
 * 
 * POST /batch
 */
export const createApiBatch = async (args: CreateApiBatchArgs, options?: CreateApiBatchOptions) => {
const {baseUrl = "https://submitapi.dvidshub.net", fetch: fetchFn = fetch, DVIDS} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/vnd.api+json")
headers.set('accept', "application/vnd.api+json")

if (DVIDS !== undefined) headers.set('authorization', `Bearer ${DVIDS}`)

const url = `${baseUrl.replace(/\/+$/, '')}/batch${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiBatchResponse, await res.json())
};