import {z} from 'zod'

export type GetApiPublicApiOffersArgs = {limit?: number | undefined, page?: number | undefined};

export type GetApiPublicApiOffersOptions = {baseUrl?: string | undefined, OAuthToken?: string | undefined, fetch?: typeof fetch | undefined};

export const offerStatus = z.enum(["active", "disabled", "deleted"]);

export const productType = z.enum(["unique", "subscription"]);

export const intervalTypeEnum = z.enum(["week", "month", "year", "lifetime"]);

export const offer = z.object({id: z.string(), name: z.string().max(255), image: z.string().nullable().optional(), price: z.number(), units: z.number().int().gte(1).optional(), default: z.boolean(), product: z.string(), status: offerStatus.optional(), type: productType.optional(), intervalType: intervalTypeEnum.optional(), interval: z.number().int().optional(), recurrence_period: z.number().int().optional(), quantity_recurrences: z.number().int().optional(), trial_days: z.number().int().optional(), max_retries: z.number().int().optional(), retry_interval: z.number().int().optional()});

export const paginatedOfferList = z.object({count: z.number().int().optional(), next: z.string().nullable().optional(), previous: z.string().nullable().optional(), results: z.array(offer).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
};

/**
 * Public API for managing offers, inherits from OfferAPIView,
 * 
 * GET /public_api/offers/
 */
export const getApiPublicApiOffers = async (args: GetApiPublicApiOffersArgs, options?: GetApiPublicApiOffersOptions) => {
const {baseUrl = "https://api.cakto.com.br", fetch: fetchFn = fetch, OAuthToken} = options ?? {}

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

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

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