import {z} from 'zod'

export type MiniAppPaymentMethodsRequest = {initData: string};

export type CreateApiMiniappPaymentsMethodsArgs = {body: MiniAppPaymentMethodsRequest};

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

export const miniAppPaymentIntegrationType = z.enum(["iframe", "redirect"]);

export const miniAppPaymentOption = z.object({id: z.string(), icon: z.string().nullable().optional(), title: z.string().nullable().optional(), description: z.string().nullable().optional(), titleKey: z.string().nullable().optional(), descriptionKey: z.string().nullable().optional()});

export const miniAppPaymentIframeConfig = z.object({expected_origin: z.string()});

export const miniAppPaymentMethod = z.object({id: z.string(), name: z.string().nullable().optional(), icon: z.string().nullable().optional(), requires_amount: z.boolean().optional(), currency: z.string().optional(), min_amount_kopeks: z.number().int().nullable().optional(), max_amount_kopeks: z.number().int().nullable().optional(), amount_step_kopeks: z.number().int().nullable().optional(), integration_type: miniAppPaymentIntegrationType, options: z.array(miniAppPaymentOption).optional(), iframe_config: miniAppPaymentIframeConfig.nullable().optional()});

export const miniAppPaymentMethodsResponse = z.object({methods: z.array(miniAppPaymentMethod).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 Payment Methods
 * 
 * POST /miniapp/payments/methods
 */
export const createApiMiniappPaymentsMethods = async (args: CreateApiMiniappPaymentsMethodsArgs, options: CreateApiMiniappPaymentsMethodsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/miniapp/payments/methods${query.size > 0 ? `?${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(miniAppPaymentMethodsResponse, await res.json())
};