import {z} from 'zod'

export type GetApiV0ApplicationsApplicationRequestIdInformationArgs = {application_request_id: string};

export type GetApiV0ApplicationsApplicationRequestIdInformationOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const problemDetails = z.object({type: z.string(), detail: z.string(), pointer: z.string().optional()});

export const transactionReference = z.string().min(1).max(50);

export const transactionFee = z.object({transaction_reference: transactionReference.optional(), fee: z.number().int().optional()});

export const statusResponse = z.object({errors: z.array(problemDetails).optional(), hmlr_reference: z.string().optional(), priority_timestamp: z.string().optional(), application_request_id: z.string().optional(), status: z.enum(["VALIDATING", "SYSTEM_ERROR", "VALIDATION_FAILED", "ACCEPTED_AWAITING_PRIORITY", "ACCEPTED_PRIORITY_PROTECTED"]).optional(), calculated_fees: z.object({total_fee: z.number().int().optional(), per_transaction: z.array(transactionFee).optional()}).optional(), warnings: z.array(z.string()).optional()});

export const statusDataResponse = z.object({data: statusResponse.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
};

/**
 * Application information API - Get the information about an application
 * 
 * GET /v0/applications/{application_request_id}/information
 */
export const getApiV0ApplicationsApplicationRequestIdInformation = async (args: GetApiV0ApplicationsApplicationRequestIdInformationArgs, options?: GetApiV0ApplicationsApplicationRequestIdInformationOptions) => {
const {baseUrl = "https://businessgateway.landregistry.gov.uk/bg2/api", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v0/applications/${encodeURIComponent(String(args.application_request_id))}/information${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(statusDataResponse, await res.json())
};