import {z} from 'zod'

export type KybTokenTypeEnum = 'FORM' | 'GOV1' | 'GOV2';

export type KybLocaleEnum = 'en' | 'es' | 'fr' | 'ru' | 'de' | 'it' | 'pl' | 'lt' | 'lv' | 'et' | 'cs' | 'ro' | 'hu' | 'ja' | 'bg' | 'nl' | 'pt';

export type KybTokenRequest = {tokenType: KybTokenTypeEnum, lifetime?: number | undefined, clientId: string, externalRef?: (string | null) | undefined, locale?: (KybLocaleEnum | null) | undefined, flow?: (string | null) | undefined, theme?: (string | null) | undefined, questionnaire?: (string | null) | undefined, questionnaireRequired?: boolean | undefined, tags?: Array<string> | undefined, scanRefs?: (Array<string> | null) | undefined};

export type CreateApiKybTokensArgs = {body: KybTokenRequest};

export type CreateApiKybTokensOptions = {baseUrl?: string | undefined, apiKeyPair?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const kybTokenTypeEnum = z.enum(["FORM", "GOV1", "GOV2"]);

export const kybLocaleEnum = z.enum(["en", "es", "fr", "ru", "de", "it", "pl", "lt", "lv", "et", "cs", "ro", "hu", "ja", "bg", "nl", "pt"]);

export const kybToken = z.object({tokenType: kybTokenTypeEnum, tokenString: z.string(), expiration: z.string(), isActive: z.boolean(), isValid: z.boolean(), companyId: z.string().nullable(), clientId: z.string().max(100), externalRef: z.string().max(40).nullable().optional(), locale: kybLocaleEnum.nullable().optional(), flow: z.string().nullable().optional(), theme: z.string().nullable().optional(), tags: z.array(z.string().max(32)).optional(), scanRefs: z.array(z.string().max(40)).nullable().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
};

/**
 * Generate KYB form token
 * 
 * POST /kyb/tokens/
 */
export const createApiKybTokens = async (args: CreateApiKybTokensArgs, options?: CreateApiKybTokensOptions) => {
const {baseUrl = "https://ivs.idenfy.com", fetch: fetchFn = fetch, apiKeyPair} = options ?? {}

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

if (apiKeyPair !== undefined) headers.set('authorization', `Basic ${btoa(`${apiKeyPair.username}:${apiKeyPair.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/kyb/tokens/${query.size > 0 ? `?${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(kybToken, await res.json())
};