import {z} from 'zod'

export type GetApiV4KyaLabelsArgs = {chain?: string | undefined, address: string};

export type GetApiV4KyaLabelsOptions = {baseUrl: string, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const entityLocalized = z.object({en: z.string().optional(), zh: z.string().optional()});

export const entityEntity = z.object({country: entityLocalized.optional(), description: entityLocalized.optional(), entity_id: z.string().optional(), entity_name: entityLocalized.optional(), link: z.string().optional(), other_link: z.string().optional()});

export const labelLabels = z.object({address: z.string().optional(), category: z.string().optional(), chain: z.string().optional(), label: z.string().optional(), source: z.string().optional(), sub_category: z.string().optional(), ts: z.number().int().optional()});

export const getApiV4KyaLabelsResponse = z.object({code: z.number().int().optional(), data: z.object({address: z.string().optional(), chain: z.string().optional(), entities: z.array(entityEntity).optional(), entity: entityEntity.optional(), entity_id: z.string().optional(), entity_ids: z.array(z.string()).optional(), labels: z.array(labelLabels).optional()}).nullable().optional(), message: 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
};

/**
 * Get labels for a blockchain address
 * 
 * GET /v4/kya/labels
 * 
 * Also accepts auth: ApiSecretAuth
 */
export const getApiV4KyaLabels = async (args: GetApiV4KyaLabelsArgs, options: GetApiV4KyaLabelsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.chain != null) query.append("chain", String(args.chain))
if (args.address != null) query.append("address", String(args.address))
if (ApiKeyAuth !== undefined) headers.set("X-API-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v4/kya/labels${query.size > 0 ? `?${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(getApiV4KyaLabelsResponse, await res.json())
};