import {z} from 'zod'

export type Gender = 'M' | 'F' | 'O';

export type Age = number;

export type Dob = string;

export type CreateApiAssessmentApiV1InitArgs = {'client-id': string, locale?: ('en' | 'hi' | 'kn') | undefined, body: {user_info: {gender: Gender, age: Age, dob?: Dob | undefined} | {gender: Gender, dob: Dob, age?: Age | undefined}, workflow_id: number, practitioner_uuid?: string | undefined, patient_uuid?: string | undefined, unique_identifier: string, transaction_id?: string | undefined}};

export type CreateApiAssessmentApiV1InitOptions = {baseUrl?: string | undefined, authApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const aSInit200 = z.object({assessment_id: z.string()});

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
};

/**
 * Step 1. Initialization
 * 
 * POST /assessment/api/v1/init/
 */
export const createApiAssessmentApiV1Init = async (args: CreateApiAssessmentApiV1InitArgs, options?: CreateApiAssessmentApiV1InitOptions) => {
const {baseUrl = "https://api.eka.care", fetch: fetchFn = fetch, authApiKey} = options ?? {}

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

if (args['client-id'] != null) headers.set("client-id", String(args['client-id']))
if (args.locale != null) headers.set("locale", String(args.locale))
if (authApiKey !== undefined) headers.set('authorization', `Bearer ${authApiKey}`)

const url = `${baseUrl.replace(/\/+$/, '')}/assessment/api/v1/init/${query.size > 0 ? `?${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(aSInit200, await res.json())
};