import {z} from 'zod'

export type GetApiSystemH2ogptInfoOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const h2OGPTGPUInfo = z.object({name: z.string(), temperature: z.number().optional(), utilization: z.number().optional(), memory_total: z.number().int().optional(), memory_used: z.number().int().optional(), power_usage: z.number().optional(), fan_speed: z.number().int().optional()});

export const h2OGPTSystemInfo = z.object({timestamp: z.string(), uptime_seconds: z.number(), hostname: z.string(), os_name: z.string(), os_version: z.string(), kernel_version: z.string(), cpu_count_physical: z.number().int(), cpu_count_logical: z.number().int(), cpu_percent_per_cpu: z.array(z.number()), cpu_freq_current: z.number(), cpu_freq_min: z.number(), cpu_freq_max: z.number(), cpu_temperature: z.number().optional(), load_avg_1min: z.number(), load_avg_5min: z.number(), load_avg_15min: z.number(), memory_total: z.number().int(), memory_available: z.number().int(), memory_used: z.number().int(), memory_percent: z.number(), swap_total: z.number().int(), swap_used: z.number().int(), swap_percent: z.number(), disk_partitions: z.array(z.record(z.string(), z.string())), disk_usage: z.record(z.string(), z.record(z.string(), z.number())), disk_io_counters: z.record(z.string(), z.number()), network_interfaces: z.array(z.string()), network_io_counters: z.record(z.string(), z.record(z.string(), z.number())), network_connections_count: z.number().int(), gpus: z.array(h2OGPTGPUInfo), process_count: z.number().int(), top_processes_cpu: z.array(z.object({})), top_processes_memory: z.array(z.object({}))});

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
};

/**
 * Gets H2OGPT system information.
 * 
 * GET /system/h2ogpt_info
 */
export const getApiSystemH2ogptInfo = async (options?: GetApiSystemH2ogptInfoOptions) => {
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 (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/system/h2ogpt_info${query.size > 0 ? `?${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(h2OGPTSystemInfo, await res.json())
};