import {z} from 'zod'

export type GetApiApiV0QueueStatusArgs = {tasks_offset?: number | undefined, tasks_limit?: number | undefined, workers_offset?: number | undefined, workers_limit?: number | undefined};

export type GetApiApiV0QueueStatusOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const queueStatusEntry = z.object({queue: z.string(), queued: z.number().int().optional(), running: z.number().int().optional(), waiting: z.number().int().optional(), succeeded_recent: z.number().int().optional(), failed_recent: z.number().int().optional(), lost_recent: z.number().int().optional()});

export const workerStatus = z.object({name: z.string(), worker_name: z.string(), status: z.string(), queues: z.array(z.string()).optional(), started: z.string().nullable().optional(), last_heartbeat: z.string().nullable().optional(), seconds_since_heartbeat: z.number().nullable().optional()});

export const queueTaskRun = z.object({task_name: z.string(), queue: z.string(), status: z.string(), attempt_number: z.number().int().nullable().optional(), page_number: z.number().int().nullable().optional(), job_id: z.string(), document_id: z.string().nullable().optional(), document_name: z.string().nullable().optional(), queued: z.string().nullable().optional(), started: z.string().nullable().optional(), finished: z.string().nullable().optional(), duration_seconds: z.number().nullable().optional()});

export const queueStatusResponse = z.object({queues: z.array(queueStatusEntry), workers: z.array(workerStatus), live_workers: z.number().int(), workers_total: z.number().int().optional(), tasks: z.array(queueTaskRun).optional(), tasks_total: z.number().int().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 Queue Status
 * 
 * GET /api/v0/queue-status
 */
export const getApiApiV0QueueStatus = async (args: GetApiApiV0QueueStatusArgs, options: GetApiApiV0QueueStatusOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.tasks_offset != null) query.append("tasks_offset", String(args.tasks_offset))
if (args.tasks_limit != null) query.append("tasks_limit", String(args.tasks_limit))
if (args.workers_offset != null) query.append("workers_offset", String(args.workers_offset))
if (args.workers_limit != null) query.append("workers_limit", String(args.workers_limit))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v0/queue-status${query.size > 0 ? `?${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(queueStatusResponse, await res.json())
};