import {z} from 'zod'

export type AdvertiserId = number;

export type GetApiVendorsTaxonomiesArgs = {advertiser_id: AdvertiserId};

export type GetApiVendorsTaxonomiesOptions = {baseUrl?: string | undefined, Auth0?: string | undefined, fetch?: typeof fetch | undefined};

export const vendorTaxonomyItem = z.object({name: z.string(), audience_segment_id: z.number().int()});

export const vendorTaxonomyGroup = z.object({vendor_id: z.number().int(), name: z.string(), preferred: z.number().int(), tax_flag: z.boolean(), taxonomies: z.array(vendorTaxonomyItem)});

export const listMetadata = z.object({status: z.string(), count: z.number().int(), total_count: z.number().int().optional(), offset: z.number().int().optional(), next_page: z.string().optional(), prev_page: z.string().optional()});

export const vendorTaxonomiesCollection = z.object({data: z.array(vendorTaxonomyGroup), meta: listMetadata});

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 Vendor Taxonomies
 * 
 * GET /vendors/taxonomies
 */
export const getApiVendorsTaxonomies = async (args: GetApiVendorsTaxonomiesArgs, options?: GetApiVendorsTaxonomiesOptions) => {
const {baseUrl = "https://api.mediamath.com/api/v3.0", fetch: fetchFn = fetch, Auth0} = options ?? {}

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

if (args.advertiser_id != null) query.append("advertiser_id", String(args.advertiser_id))
if (Auth0 !== undefined) headers.set('authorization', `Bearer ${Auth0}`)

const url = `${baseUrl.replace(/\/+$/, '')}/vendors/taxonomies${query.size > 0 ? `?${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(vendorTaxonomiesCollection, await res.json())
};