import {z} from 'zod'

export type GetApiMonitorsIdArgs = {id: string};

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

export const monitorAction = z.union([z.object({type: z.literal("enable_shield_mode")}), z.object({type: z.literal("log_events")}), z.object({type: z.literal("notify"), message: z.string(), notify: z.array(z.string())}), z.object({type: z.literal("replace_server")}), z.object({type: z.literal("manage_tickets"), message: z.string(), service: z.string().optional()})]);

export const label = z.string();

export const monitorNotification = z.string();

export const positiveInteger = z.number().int().gte(1);

export const logsMonitorParameters = z.object({type: z.enum(["cdn-logs", "csp-reports", "pageviews", "proxy-logs", "custom", "events"]), duration: positiveInteger, group_by: z.union([z.array(z.string()), z.unknown()]).optional(), filter: z.union([z.string(), z.unknown()]).optional(), condition: z.string()});

export const dataTransferBillingThreshold = z.object({type: z.enum(["budget", "allowance"]), percent: z.number()});

export const dataTransferBillingMonitorParameters = z.object({budget: z.number().optional(), thresholds: z.array(dataTransferBillingThreshold).optional()});

export const objectMonitorParameters = z.object({attribute: z.literal("static_ips"), href: z.string()});

export const nonNegativeInteger = z.number().int().gte(0);

export const signalMonitorParameters = z.object({inactivity_resolution_interval: z.union([nonNegativeInteger, z.unknown()]).optional()});

export const emptyObject = z.object({});

export const timestamp = z.string();

export const groupState = z.object({monitor_id: z.string().min(12).max(12).optional(), subject: z.string().max(200).optional(), scope: z.object({}).optional(), state: z.boolean().optional(), updated: timestamp.optional()});

export const monitor = z.object({type: z.enum(["logs", "object-data-plane", "signal"]).optional(), actions: z.array(monitorAction).optional(), name: z.string().min(1).max(50).optional(), description: z.string().max(100).optional(), labels: z.array(label).optional(), message: z.string().max(10000).optional(), notify: z.array(monitorNotification).optional(), log_events: z.boolean().optional(), parameters: z.union([logsMonitorParameters, dataTransferBillingMonitorParameters, objectMonitorParameters, signalMonitorParameters, emptyObject]).optional(), href: z.string().optional(), states: z.array(groupState).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
};

/**
 * Gets the specified monitor
 * 
 * GET /monitors/{id}
 */
export const getApiMonitorsId = async (args: GetApiMonitorsIdArgs, options?: GetApiMonitorsIdOptions) => {
const {baseUrl = "https://api.webscale.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/monitors/${encodeURIComponent(String(args.id))}${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(monitor, await res.json())
};