import {z} from 'zod'

export type PromoOfferCreateRequest = {user_id?: (number | null) | undefined, telegram_id?: (number | null) | undefined, notification_type: string, valid_hours: number, discount_percent?: number | undefined, bonus_amount_kopeks?: number | undefined, subscription_id?: (number | null) | undefined, effect_type?: string | undefined, extra_data?: {[key: string]: unknown} | undefined};

export type CreateApiPromoOffersArgs = {body: PromoOfferCreateRequest};

export type CreateApiPromoOffersOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const appWebapiSchemasPromoOffersPromoOfferUserInfo = z.object({id: z.number().int(), telegram_id: z.number().int().nullable().optional(), username: z.string().nullable().optional(), first_name: z.string().nullable().optional(), last_name: z.string().nullable().optional(), full_name: z.string().nullable().optional()});

export const promoOfferSubscriptionInfo = z.object({id: z.number().int(), status: z.string(), is_trial: z.boolean(), start_date: z.string(), end_date: z.string(), autopay_enabled: z.boolean()});

export const appWebapiSchemasPromoOffersPromoOfferResponse = z.object({id: z.number().int(), user_id: z.number().int(), subscription_id: z.number().int().nullable().optional(), notification_type: z.string(), discount_percent: z.number().int(), bonus_amount_kopeks: z.number().int(), expires_at: z.string(), claimed_at: z.string().nullable().optional(), is_active: z.boolean(), effect_type: z.string(), extra_data: z.record(z.string(), z.unknown()).optional(), created_at: z.string(), updated_at: z.string(), user: appWebapiSchemasPromoOffersPromoOfferUserInfo.nullable().optional(), subscription: promoOfferSubscriptionInfo.nullable().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
};

/**
 * Create Promo Offer
 * 
 * POST /promo-offers
 */
export const createApiPromoOffers = async (args: CreateApiPromoOffersArgs, options: CreateApiPromoOffersOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("X-API-Key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/promo-offers${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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