import {z} from 'zod'

export type GetApi0WorkersArgs = {active?: boolean | undefined};

export type GetApi0WorkersOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const workerHold = z.object({reason: z.string(), time: z.string()});

export const workerJob = z.object({id: z.string(), name: z.string(), owner: z.string(), state: z.string(), tags: z.record(z.string(), z.string())});

export const worker = z.object({bootstrap: z.boolean(), deleted: z.boolean(), diagnostics: z.boolean(), factory: z.string(), factory_ip: z.string().nullable().optional(), factory_private: z.string().nullable().optional(), hold: workerHold.nullable().optional(), id: z.string(), jobs: z.array(workerJob), lastping: z.string().nullable().optional(), recycle: z.boolean(), target: z.string()});

export const workersResult = z.object({workers: z.array(worker)});

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 /0/workers
 */
export const getApi0Workers = async (args: GetApi0WorkersArgs, options: GetApi0WorkersOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.active != null) query.append("active", String(args.active))

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