import {z} from 'zod'

export type GetApiPromosPromoIdArgs = {promoId: string};

export type GetApiPromosPromoIdOptions = {baseUrl: string, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const dtoOfferBrand = z.object({brand: z.string(), brandName: z.string()});

export const dtoPromoDescription = z.object({description: z.string().optional(), language: z.string().optional(), terms: z.string().optional()});

export const dtoPromoStatus = z.enum(["active", "expired", "pending"]);

export const dtoPromo = z.object({brand: dtoOfferBrand.optional(), country: z.string().optional(), createdAt: z.string().optional(), dataBonusGB: z.number().optional(), dataMultiplier: z.number().optional(), description: z.array(dtoPromoDescription).optional(), endAt: z.string().optional(), id: z.string().optional(), maxValue: z.number().int().optional(), minValue: z.number().int().optional(), offerIds: z.array(z.string()).optional(), regions: z.array(z.string()).optional(), smsBonusNumber: z.number().int().optional(), smsMultiplier: z.number().optional(), startAt: z.string().optional(), status: dtoPromoStatus.optional(), updatedAt: z.string().optional(), valueBonus: z.number().int().optional(), valueMultiplier: z.number().optional(), voiceBonusMinutes: z.number().int().optional(), voiceMultiplier: z.number().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
};

/**
 * Get promo by id
 * 
 * GET /promos/{promoId}
 */
export const getApiPromosPromoId = async (args: GetApiPromosPromoIdArgs, options: GetApiPromosPromoIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

if (ApiKey !== undefined) headers.set("Authorization", ApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/promos/${encodeURIComponent(String(args.promoId))}${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(dtoPromo, await res.json())
};