import {z} from 'zod'

export type CreateApiOmniProcessFaceArgs = {imageType?: ('selfie' | 'videoSelfie') | undefined, 'api-version': string};

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

export const processFaceResponse = z.object({confidence: z.number().gte(0).lte(1), existingUser: z.boolean(), existingInterviewId: z.string().optional(), existingExternalId: z.string().optional(), nameMatched: z.boolean().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
};

/**
 * Process face
 * 
 * POST /omni/process/face
 */
export const createApiOmniProcessFace = async (args: CreateApiOmniProcessFaceArgs, options?: CreateApiOmniProcessFaceOptions) => {
const {baseUrl = "https://demo-api.incodesmile.com", fetch: fetchFn = fetch, ApiKeyAuth, IncodeHardwareIdAuth} = options ?? {}

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

if (args.imageType != null) query.append("imageType", String(args.imageType))
if (args['api-version'] != null) headers.set("api-version", String(args['api-version']))
if (ApiKeyAuth !== undefined) headers.set("x-api-key", ApiKeyAuth)
if (IncodeHardwareIdAuth !== undefined) headers.set("X-Incode-Hardware-Id", IncodeHardwareIdAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/omni/process/face${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers})

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

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