import {z} from 'zod'

export type GetApiV1DocumentArgs = {company_id: string, document_category: 'current_printout' | 'chronological_printout' | 'historical_printout' | 'structured_information' | 'shareholder_list' | 'articles_of_association'};

export type GetApiV1DocumentOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const realtimeDocumentResponse = z.object({url: z.string(), category: z.enum(["current_printout", "chronological_printout", "historical_printout", "structured_information", "shareholder_list", "articles_of_association"]), file_date: z.string().nullable(), file_name: z.string().nullable()});

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
};

/**
 * Fetch a document in realtime.
 * 
 * GET /v1/document
 */
export const getApiV1Document = async (args: GetApiV1DocumentArgs, options?: GetApiV1DocumentOptions) => {
const {baseUrl = "https://api.openregister.de", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.company_id != null) query.append("company_id", String(args.company_id))
if (args.document_category != null) query.append("document_category", String(args.document_category))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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