import {z} from 'zod'

export type NetworkTokensRequestSource = {type: string, id: string} | {type: string, number: string, cvv?: string | undefined, expiry_month: string, expiry_year: string};

export type NetworkTokensRequest = {source: NetworkTokensRequestSource};

export type CreateApiNetworkTokensArgs = {body: NetworkTokensRequest};

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

export const networkTokensCard = z.object({last4: z.string(), expiry_month: z.string(), expiry_year: z.string()});

export const link = z.object({href: z.string()});

export const networkTokensResponseLinks = z.object({self: link.optional(), cryptogram: link.optional(), "card-art": link.optional()});

export const networkTokensResponse = z.object({card: networkTokensCard, network_token: z.object({id: z.string(), state: z.enum(["active", "suspended", "inactive"]), number: z.string(), expiry_month: z.string(), expiry_year: z.string(), type: z.enum(["vts", "mdes"]), payment_account_reference: z.string().optional(), created_on: z.string(), modified_on: z.string()}), token_requestor_id: z.string().optional(), token_scheme_id: z.string().optional(), _links: networkTokensResponseLinks.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
};

/**
 * Provision a Network Token
 * 
 * POST /network-tokens
 */
export const createApiNetworkTokens = async (args: CreateApiNetworkTokensArgs, options: CreateApiNetworkTokensOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth} = options ?? {}

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

if (OAuth !== undefined) headers.set('authorization', `Bearer ${OAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/network-tokens${query.size > 0 ? `?${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(networkTokensResponse, await res.json())
};