import {z} from 'zod'

export type AlertType = 'BrokerAlert' | 'ConsumerGroupAlert' | 'DataQualityPolicyAlert' | 'KafkaConnectAlert' | 'TopicAlert';

export type GetApiPublicMonitoringV2ClusterClusterAlertArgs = {cluster: string, connector?: string | undefined, connect?: string | undefined, topic?: string | undefined, consumerGroup?: string | undefined, alertType?: AlertType | undefined};

export type GetApiPublicMonitoringV2ClusterClusterAlertOptions = {baseUrl: string, httpAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const alertKind = z.literal("Alert");

export const alertStatus = z.enum(["Firing", "Healthy", "Pending"]);

export const alertMetadataOutput = z.object({name: z.string(), cluster: z.string(), updatedAt: z.string(), updatedBy: z.string(), lastTriggeredAt: z.string().optional(), status: alertStatus});

export const operator = z.enum(["GreaterThan", "GreaterThanOrEqual", "LessThan", "LessThanOrEqual", "NotEqual"]);

export const brokerMetricType = z.enum(["MessageIn", "MessageOut", "MessageSize", "OfflinePartitionCount", "PartitionCount", "UnderMinIsrPartitionCount", "UnderReplicatedPartitionCount"]);

export const brokerAlertOutputV2 = z.object({threshold: z.number().int(), operator: operator, metric: brokerMetricType, promQl: z.string(), description: z.string().optional(), displayName: z.string().optional(), disable: z.boolean().optional(), type: z.literal("BrokerAlert")});

export const consumerGroupMetricType = z.enum(["OffsetLag", "TimeLag"]);

export const consumerGroupAlertOutputV2 = z.object({consumerGroupName: z.string(), threshold: z.number().int(), operator: operator, metric: consumerGroupMetricType, promQl: z.string(), description: z.string().optional(), displayName: z.string().optional(), disable: z.boolean().optional(), topicName: z.string().optional(), type: z.literal("ConsumerGroupAlert")});

export const kafkaConnectMetricType = z.literal("FailedTaskCount");

export const kafkaConnectAlertOutputV2 = z.object({connectName: z.string(), connectorName: z.string(), metric: kafkaConnectMetricType, threshold: z.number().int(), operator: operator, promQl: z.string(), description: z.string().optional(), displayName: z.string().optional(), disable: z.boolean().optional(), type: z.literal("KafkaConnectAlert")});

export const topicMetricType = z.enum(["MessageCount", "MessageIn", "MessageOut", "MessageSize"]);

export const topicAlertOutputV2 = z.object({topicName: z.string(), threshold: z.number().int(), operator: operator, metric: topicMetricType, promQl: z.string(), description: z.string().optional(), displayName: z.string().optional(), disable: z.boolean().optional(), type: z.literal("TopicAlert")});

export const alertSpecOutputV2 = z.discriminatedUnion("type", [brokerAlertOutputV2, consumerGroupAlertOutputV2, kafkaConnectAlertOutputV2, topicAlertOutputV2]);

export const alertOutputResourceV2 = z.object({apiVersion: z.string(), kind: alertKind, metadata: alertMetadataOutput, spec: alertSpecOutputV2});

export const getApiPublicMonitoringV2ClusterClusterAlertResponse = z.array(alertOutputResourceV2);

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
};

/**
 * List Alert resources
 * 
 * GET /public/monitoring/v2/cluster/{cluster}/alert
 */
export const getApiPublicMonitoringV2ClusterClusterAlert = async (args: GetApiPublicMonitoringV2ClusterClusterAlertArgs, options: GetApiPublicMonitoringV2ClusterClusterAlertOptions) => {
const {baseUrl, fetch: fetchFn = fetch, httpAuth} = options ?? {}

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

if (args.connector != null) query.append("connector", String(args.connector))
if (args.connect != null) query.append("connect", String(args.connect))
if (args.topic != null) query.append("topic", String(args.topic))
if (args.consumerGroup != null) query.append("consumerGroup", String(args.consumerGroup))
if (args.alertType != null) query.append("alertType", String(args.alertType))
if (httpAuth !== undefined) headers.set('authorization', `Bearer ${httpAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/public/monitoring/v2/cluster/${encodeURIComponent(String(args.cluster))}/alert${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(getApiPublicMonitoringV2ClusterClusterAlertResponse, await res.json())
};