import {z} from 'zod'

export type TransformAndValidateRequest = {content: {messageType: string, content: {[key: string]: unknown}}, source?: string | undefined, swiftVersion?: ('2025' | '2026') | undefined, validateBic?: boolean | undefined};

export type CreateApiWebapiTransformAndValidateArgs = {body: TransformAndValidateRequest};

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

export const transformAndValidateResponse = z.object({errorOccurred: z.boolean().optional(), isValid: z.boolean().optional(), error: z.string().nullable().optional(), transformationResult: z.object({Result: z.string().optional(), errorOccurred: z.boolean().optional()}).optional(), validationResult: z.object({isValid: z.boolean().optional(), errorOccurred: z.boolean().optional()}).optional(), swiftMessage: z.string().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
};

/**
 * Transform and validate an outbound Swift message
 * 
 * POST /webapi/transform-and-validate
 */
export const createApiWebapiTransformAndValidate = async (args: CreateApiWebapiTransformAndValidateArgs, options?: CreateApiWebapiTransformAndValidateOptions) => {
const {baseUrl = "https://your-environment.appiancloud.com/suite", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("appian-api-key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/webapi/transform-and-validate${query.size > 0 ? `?${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(transformAndValidateResponse, await res.json())
};