import {z} from 'zod'

export type GetApiV1AutocompleteCompanyArgs = {query: string};

export type GetApiV1AutocompleteCompanyOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const companyRegisterType = z.enum(["HRB", "HRA", "PR", "GnR", "VR"]);

export const companyLegalForm = z.enum(["ag", "eg", "ek", "ev", "ewiv", "foreign", "gbr", "ggmbh", "gmbh", "kg", "kgaa", "unknown", "llp", "municipal", "ohg", "se", "ug"]);

export const companySearchAddress = z.object({street: z.string().optional(), city: z.string(), postal_code: z.string().optional(), country: z.string(), extra: z.string().optional(), formatted_value: z.string()});

export const companySearchResponseItem = z.object({company_id: z.string(), name: z.string(), country: z.string().nullable(), register_number: z.string(), register_type: companyRegisterType, register_court: z.string(), active: z.boolean(), legal_form: companyLegalForm, address: companySearchAddress.nullable(), purpose: z.string().nullable()});

export const companyAutocompleteResponse = z.object({results: z.array(companySearchResponseItem)});

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
};

/**
 * Autocomplete company search
 * 
 * GET /v1/autocomplete/company
 */
export const getApiV1AutocompleteCompany = async (args: GetApiV1AutocompleteCompanyArgs, options?: GetApiV1AutocompleteCompanyOptions) => {
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.query != null) query.append("query", String(args.query))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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