import {z} from 'zod'

export type JobStatus = string;

export type GetApiApiV2JobsArgs = {_status?: Array<JobStatus> | undefined};

export type GetApiApiV2JobsOptions = {baseUrl: string, bearerToken?: string | undefined, fetch?: typeof fetch | undefined};

export const entryResponse = z.object({resource: z.object({ExecutionPeriod: z.object({end: z.string().optional(), start: z.string().optional()}).optional(), identifier: z.object({system: z.string().optional(), use: z.string().optional(), value: z.string().optional()}).optional(), input: z.array(z.object({type: z.object({text: z.string().optional()}).optional(), valueString: z.string().optional()})).optional(), intent: z.string().optional(), resourceType: z.string().optional(), status: z.string().optional()}).optional()});

export const bundleResponse = z.object({entry: z.array(entryResponse).optional(), resourceType: z.string().optional(), total: z.number().int().optional(), type: 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 job(s) by status
 * 
 * GET /api/v2/jobs
 */
export const getApiApiV2Jobs = async (args: GetApiApiV2JobsArgs, options: GetApiApiV2JobsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerToken} = options ?? {}

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

if (args._status != null) query.append("_status", args._status.join(','))
if (bearerToken !== undefined) headers.set("Authorization", bearerToken)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/jobs${query.size > 0 ? `?${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(bundleResponse, await res.json())
};