import {z} from 'zod'

export type GetApiV2PublishersCouponsArgs = {pageToken?: string | undefined, campaign_id?: string | undefined};

export type GetApiV2PublishersCouponsOptions = {baseUrl?: string | undefined, APIKey?: string | undefined, fetch?: typeof fetch | undefined};

export const publisherCouponCodeData = z.object({coupons: z.array(z.object({id: z.string().optional(), code: z.string().optional(), description: z.string().optional(), status: z.enum(["active", "pending", "expired"]).optional(), type: z.enum(["generic", "exclusive", "one_time"]).optional(), campaign_name: z.string().optional(), campaign_id: z.number().optional(), start: z.string().optional(), end: z.string().optional(), created: z.string().optional()})).optional(), pageToken: z.string().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
};

/**
 * Fetch All Coupons
 * 
 * GET /v2/publishers/coupons
 */
export const getApiV2PublishersCoupons = async (args: GetApiV2PublishersCouponsArgs, options?: GetApiV2PublishersCouponsOptions) => {
const {baseUrl = "https://api.trackier.com", fetch: fetchFn = fetch, APIKey} = options ?? {}

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

if (args.pageToken != null) query.append("pageToken", String(args.pageToken))
if (args.campaign_id != null) query.append("campaign_id", String(args.campaign_id))
if (APIKey !== undefined) headers.set("X-Api-Key", APIKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/publishers/coupons${query.size > 0 ? `?${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(publisherCouponCodeData, await res.json())
};