import {z} from 'zod'

export type CreateApiTenantIdTransactionInitializeArgs = {apiKey: string, tenant_id: string, body: {user_id: string, transaction_id: string, transaction_data: Record<string, never>}};

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

export const credentialDescriptorEntity = z.object({type: z.literal("public-key"), id: z.string(), transports: z.array(z.enum(["ble", "hybrid", "internal", "nfc", "usb"])).optional()});

export const createApiTenantIdTransactionInitializeResponse = z.object({publicKey: z.object({challenge: z.string(), timeout: z.number().int().optional(), rpId: z.string().optional(), allowCredentials: z.array(credentialDescriptorEntity).optional(), userVerification: z.enum(["discouraged", "preferred", "required"]).optional(), extensions: z.object({appid: z.boolean().optional(), appidExclude: z.boolean().optional(), credProps: z.object({rk: z.boolean().optional()}).optional()}).optional()}).optional(), mediation: z.enum(["optional", "required", "silent"]).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
};

/**
 * Initialize a transaction
 * 
 * POST /{tenant_id}/transaction/initialize
 */
export const createApiTenantIdTransactionInitialize = async (args: CreateApiTenantIdTransactionInitializeArgs, options?: CreateApiTenantIdTransactionInitializeOptions) => {
const {baseUrl = "https://passkeys.hanko.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.apiKey != null) headers.set("apiKey", String(args.apiKey))

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.tenant_id))}/transaction/initialize${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(createApiTenantIdTransactionInitializeResponse, await res.json())
};