import {z} from 'zod'

export type GetApiCabinetAdminTrafficArgs = {period?: number | undefined, limit?: number | undefined, offset?: number | undefined, search?: string | undefined, sort_by?: string | undefined, sort_desc?: boolean | undefined, tariffs?: string | undefined, statuses?: string | undefined, nodes?: string | undefined, start_date?: string | undefined, end_date?: string | undefined};

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

export const userTrafficItem = z.object({user_id: z.number().int(), telegram_id: z.number().int().nullable(), username: z.string().nullable(), email: z.string().nullable(), full_name: z.string(), tariff_name: z.string().nullable(), subscription_status: z.string().nullable(), traffic_limit_gb: z.number(), device_limit: z.number().int(), node_traffic: z.record(z.string(), z.number().int()), total_bytes: z.number().int()});

export const trafficNodeInfo = z.object({node_uuid: z.string(), node_name: z.string(), country_code: z.string()});

export const trafficUsageResponse = z.object({items: z.array(userTrafficItem), nodes: z.array(trafficNodeInfo), total: z.number().int(), offset: z.number().int(), limit: z.number().int(), period_days: z.number().int(), available_tariffs: z.array(z.string()), available_statuses: z.array(z.string())});

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 Traffic Usage
 * 
 * GET /cabinet/admin/traffic
 */
export const getApiCabinetAdminTraffic = async (args: GetApiCabinetAdminTrafficArgs, options: GetApiCabinetAdminTrafficOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.period != null) query.append("period", String(args.period))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.search != null) query.append("search", String(args.search))
if (args.sort_by != null) query.append("sort_by", String(args.sort_by))
if (args.sort_desc != null) query.append("sort_desc", String(args.sort_desc))
if (args.tariffs != null) query.append("tariffs", String(args.tariffs))
if (args.statuses != null) query.append("statuses", String(args.statuses))
if (args.nodes != null) query.append("nodes", String(args.nodes))
if (args.start_date != null) query.append("start_date", String(args.start_date))
if (args.end_date != null) query.append("end_date", String(args.end_date))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

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