import {z} from 'zod'

export type NotificationChannel = {channel_type: 'email' | 'slack', recipients: Array<string>};

export type UpdateNotificationChannelsRequest = {notification_channels: Array<NotificationChannel>};

export type UpdateApiV2MonitorsMonitorIdNotificationsArgs = {monitorId: string, body: UpdateNotificationChannelsRequest};

export type UpdateApiV2MonitorsMonitorIdNotificationsOptions = {baseUrl?: string | undefined, APIKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const costType = z.enum(["REAL_COST", "AMORTIZED_COST", "BILLED_COST", "CUSTOM_COST", "DISCOUNTED_AMORTIZED_COST", "DISCOUNTED_COST", "INVOICED_AMORTIZED_COST", "ON_DEMAND_COST"]);

export const notificationChannel = z.object({channel_type: z.enum(["email", "slack"]), recipients: z.array(z.string())});

export const thresholdOperator = z.enum(["AND", "OR"]);

export const monitorThreshold = z.object({min_cost_impact: z.number().gte(0).nullable().optional(), operator: thresholdOperator.nullable().optional(), percentage: z.number().gt(0).nullable().optional()});

export const monitor = z.object({cost_type: costType.optional(), created_at: z.string(), description: z.string().nullable().optional(), detection_type: z.literal("anomaly").optional(), filter_set: z.record(z.string(), z.unknown()).optional(), group_by: z.array(z.string()).optional(), is_enabled: z.boolean().optional(), last_triggered_at: z.string().nullable().optional(), monitor_id: z.string().min(1), monitor_name: z.string().min(1), notification_channels: z.array(notificationChannel).optional(), open_incident_count: z.number().int().gte(0).nullable().optional(), owner_id: z.string(), threshold: monitorThreshold.optional(), total_incident_count: z.number().int().gte(0).optional(), updated_at: 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
};

/**
 * Update monitor notifications
 * 
 * PUT /v2/monitors/{monitorId}/notifications
 */
export const updateApiV2MonitorsMonitorIdNotifications = async (args: UpdateApiV2MonitorsMonitorIdNotificationsArgs, options?: UpdateApiV2MonitorsMonitorIdNotificationsOptions) => {
const {baseUrl = "https://api.cloudzero.com", fetch: fetchFn = fetch, APIKeyAuth} = options ?? {}

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

if (APIKeyAuth !== undefined) headers.set("Authorization", APIKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/monitors/${encodeURIComponent(String(args.monitorId))}/notifications${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", headers, body: JSON.stringify(args.body)})

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())
};