import {z} from 'zod'

export type GetApiAdminScheduledTasksExecutionStatsArgs = {interval?: string | undefined};

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

export const scheduledTaskExecutionStats = z.object({daily_executions: z.array(z.object({day: z.string().optional(), total: z.number().int().optional(), completed: z.number().int().optional(), failed: z.number().int().optional()})).optional(), totals: z.object({total_executions: z.number().int().optional(), completed_executions: z.number().int().optional(), failed_executions: z.number().int().optional(), running_executions: z.number().int().optional(), total_tasks: z.number().int().optional(), active_tasks: z.number().int().optional()}).optional(), top_tasks: z.array(z.object({task_id: z.string().optional(), task_name: z.string().optional(), username: z.string().optional(), task_type: z.string().optional(), execution_count: z.number().int().optional(), completed_count: z.number().int().optional(), failed_count: z.number().int().optional()})).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
};

/**
 * Execution stats over an interval (admin only).
 * 
 * GET /admin/scheduled_tasks/execution_stats
 */
export const getApiAdminScheduledTasksExecutionStats = async (args: GetApiAdminScheduledTasksExecutionStatsArgs, options?: GetApiAdminScheduledTasksExecutionStatsOptions) => {
const {baseUrl = "https://h2ogpte.genai.h2o.ai/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.interval != null) query.append("interval", String(args.interval))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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