import {z} from 'zod'

export type GetApiV2UserSubscriptionsOptions = {baseUrl?: string | undefined, customerAccessCode?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiV2UserSubscriptionsResponse = z.object({data: z.array(z.object({allotment: z.object({downloads_left: z.number().int().optional(), downloads_limit: z.number().int().optional(), generations_left: z.number().int().optional(), generations_limit: z.number().int().optional(), end_time: z.string().optional(), start_time: z.string().optional(), content_tiers: z.record(z.string(), z.union([z.object({downloads_left: z.number().int(), downloads_limit: z.number().int()}), z.object({generations_left: z.number().int(), generations_limit: z.number().int()})])).optional()}).optional(), description: z.string().optional(), product_description: z.string().optional(), portfolio: z.boolean().optional(), expiration_time: z.string().optional(), formats: z.array(z.object({description: z.string().optional(), format: z.string().optional(), media_type: z.enum(["image", "video", "audio", "editorial"]).optional(), min_resolution: z.number().int().optional(), size: z.string().optional()})).optional(), features: z.array(z.string()).optional(), id: z.string(), license: z.string().optional(), asset_type: z.string().optional(), metadata: z.object({}).optional(), price_per_download: z.object({local_amount: z.number().optional(), local_currency: z.string().optional(), content_tiers: z.record(z.string(), z.object({local_amount: z.number(), local_currency: z.string()})).optional()}).optional()})).optional(), errors: z.array(z.object({statusCode: z.number().optional(), code: z.string().optional(), data: z.string().optional(), items: z.array(z.object({})).optional(), message: z.string(), path: z.string().optional()})).optional(), message: z.string().optional(), page: z.number().int().optional(), per_page: z.number().int().optional(), total_count: z.number().int().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
};

/**
 * List user subscriptions
 * 
 * GET /v2/user/subscriptions
 */
export const getApiV2UserSubscriptions = async (options?: GetApiV2UserSubscriptionsOptions) => {
const {baseUrl = "https://api.shutterstock.com", fetch: fetchFn = fetch, customerAccessCode} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/user/subscriptions${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

return validateResponse(getApiV2UserSubscriptionsResponse, await res.json())
};