import {z} from 'zod'

export type GetApiRootArgs = {query?: string | undefined, order?: string | undefined, 'start-index'?: number | undefined, 'max-results'?: number | undefined};

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

export const workflowstate = z.object({wf_id: z.number().int().optional(), state: z.string().optional(), status: z.number().int().optional(), restart_count: z.number().int().optional(), timestamp: z.number().optional()});

export const rootWorkflow = z.object({wf_id: z.number().int().optional(), wf_uuid: z.string().optional(), submit_hostname: z.string().optional(), submit_dir: z.string().optional(), planner_arguments: z.string().optional(), planner_version: z.string().optional(), user: z.string().optional(), grid_dn: z.string().optional(), dax_label: z.string().optional(), dax_version: z.string().optional(), dax_file: z.string().optional(), dag_file_name: z.string().optional(), timestamp: z.number().optional(), workflow_state: workflowstate.optional(), archived: z.boolean().optional()});

export const getApiRootResponse = z.array(rootWorkflow);

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
};

/**
 * Retrieve all root workflows
 * 
 * GET /root
 */
export const getApiRoot = async (args: GetApiRootArgs, options?: GetApiRootOptions) => {
const {baseUrl = "https://localhost:5000/api/v1/user/unknown", fetch: fetchFn = fetch} = 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 (args.order != null) query.append("order", String(args.order))
if (args['start-index'] != null) query.append("start-index", String(args['start-index']))
if (args['max-results'] != null) query.append("max-results", String(args['max-results']))

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