import {z} from 'zod'

export type GetApiLanguagesArgs = {'Accept-Language'?: string | undefined, language_list_type?: ('carecloud-api' | 'web-portal' | 'customer-communication') | undefined, default_language?: boolean | undefined};

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

export const language = z.object({language_id: z.string().optional(), state: z.union([z.literal(0), z.literal(1), z.literal(2)]).optional(), last_change: z.string().optional()});

export const getApiLanguagesResponse = z.object({data: z.object({languages: z.array(language).optional(), total_items: z.number().int().optional()}).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
};

/**
 * Get all languages
 * 
 * GET /languages
 */
export const getApiLanguages = async (args: GetApiLanguagesArgs, options?: GetApiLanguagesOptions) => {
const {baseUrl = "https://sandbox.crmcarecloud.com/webservice/rest-api/enterprise-interface/v1.0", fetch: fetchFn = fetch} = options ?? {}

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

if (args['Accept-Language'] != null) headers.set("Accept-Language", String(args['Accept-Language']))
if (args.language_list_type != null) query.append("language_list_type", String(args.language_list_type))
if (args.default_language != null) query.append("default_language", String(args.default_language))

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

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

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

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