import {z} from 'zod'

export type GetApiClusterTelemetryArgs = {details_level?: number | undefined, timeout?: number | undefined};

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

export const hardwareUsage = z.object({cpu: z.number().int().gte(0), payload_io_read: z.number().int().gte(0), payload_io_write: z.number().int().gte(0), payload_index_io_read: z.number().int().gte(0), payload_index_io_write: z.number().int().gte(0), vector_io_read: z.number().int().gte(0), vector_io_write: z.number().int().gte(0)});

export const modelUsage = z.object({tokens: z.number().int().gte(0)});

export const inferenceUsage = z.object({models: z.record(z.string(), modelUsage)});

export const usage = z.object({hardware: z.union([hardwareUsage, z.unknown()]).optional(), inference: z.union([inferenceUsage, z.unknown()]).optional()});

export const shardKey = z.union([z.string(), z.number().int().gte(0)]);

export const replicaState = z.enum(["Active", "Dead", "Partial", "Initializing", "Listener", "PartialSnapshot", "Recovery", "Resharding", "ReshardingScaleDown", "ActiveRead", "ManualRecovery"]);

export const shardStatus = z.enum(["green", "yellow", "grey", "red"]);

export const shardCleanStatusProgressTelemetry = z.object({deleted_points: z.number().int().gte(0)});

export const shardCleanStatusFailedTelemetry = z.object({reason: z.string()});

export const shardCleanStatusTelemetry = z.union([z.enum(["started", "done", "cancelled"]), z.object({progress: shardCleanStatusProgressTelemetry}), z.object({failed: shardCleanStatusFailedTelemetry})]);

export const partialSnapshotTelemetry = z.object({ongoing_create_snapshot_requests: z.number().int().gte(0), is_recovering: z.boolean(), recovery_timestamp: z.number().int().gte(0)});

export const distributedReplicaTelemetry = z.object({peer_id: z.number().int().gte(0), state: replicaState, status: z.union([shardStatus, z.unknown()]).optional(), total_optimized_points: z.number().int().gte(0).nullable().optional(), vectors_size_bytes: z.number().int().gte(0).nullable().optional(), payloads_size_bytes: z.number().int().gte(0).nullable().optional(), num_points: z.number().int().gte(0).nullable().optional(), num_vectors: z.number().int().gte(0).nullable().optional(), num_vectors_by_name: z.record(z.string(), z.number().int().gte(0)).nullable().optional(), shard_cleaning_status: z.union([shardCleanStatusTelemetry, z.unknown()]).optional(), partial_snapshot: z.union([partialSnapshotTelemetry, z.unknown()]).optional()});

export const distributedShardTelemetry = z.object({id: z.number().int().gte(0), key: z.union([shardKey, z.unknown()]).optional(), replicas: z.array(distributedReplicaTelemetry)});

export const reshardingDirection = z.enum(["up", "down"]);

export const reshardingInfo = z.object({direction: reshardingDirection, shard_id: z.number().int().gte(0), peer_id: z.number().int().gte(0), shard_key: z.union([shardKey, z.unknown()]).optional()});

export const shardTransferMethod = z.enum(["stream_records", "snapshot", "wal_delta", "resharding_stream_records"]);

export const shardTransferInfo = z.object({shard_id: z.number().int().gte(0), to_shard_id: z.number().int().gte(0).nullable().optional(), from: z.number().int().gte(0), to: z.number().int().gte(0), sync: z.boolean(), method: z.union([shardTransferMethod, z.unknown()]).optional(), comment: z.string().nullable().optional()});

export const distributedCollectionTelemetry = z.object({id: z.string(), shards: z.array(distributedShardTelemetry).nullable().optional(), reshardings: z.array(reshardingInfo).nullable().optional(), shard_transfers: z.array(shardTransferInfo).nullable().optional()});

export const stateRole = z.enum(["Follower", "Candidate", "Leader", "PreCandidate"]);

export const consensusThreadStatus = z.union([z.object({consensus_thread_status: z.literal("working"), last_update: z.string()}), z.object({consensus_thread_status: z.literal("stopped")}), z.object({consensus_thread_status: z.literal("stopped_with_err"), err: z.string()})]);

export const distributedPeerDetails = z.object({version: z.string(), role: z.union([stateRole, z.unknown()]).optional(), is_voter: z.boolean(), term: z.number().int().gte(0), commit: z.number().int().gte(0), num_pending_operations: z.number().int().gte(0), consensus_thread_status: consensusThreadStatus});

export const distributedPeerInfo = z.object({uri: z.string(), responsive: z.boolean(), details: z.union([distributedPeerDetails, z.unknown()]).optional()});

export const distributedClusterTelemetry = z.object({enabled: z.boolean(), number_of_peers: z.number().int().gte(0).nullable().optional(), peers: z.record(z.string(), distributedPeerInfo)});

export const distributedTelemetryData = z.object({collections: z.record(z.string(), distributedCollectionTelemetry), cluster: z.union([distributedClusterTelemetry, z.unknown()]).optional()});

export const getApiClusterTelemetryResponse = z.object({usage: z.union([usage, z.unknown()]).optional(), time: z.number().optional(), status: z.string().optional(), result: distributedTelemetryData.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
};

/**
 * Collect cluster telemetry data
 * 
 * GET /cluster/telemetry
 * 
 * Also accepts auth: bearerAuth
 */
export const getApiClusterTelemetry = async (args: GetApiClusterTelemetryArgs, options?: GetApiClusterTelemetryOptions) => {
const {baseUrl = "http://localhost:6333", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.details_level != null) query.append("details_level", String(args.details_level))
if (args.timeout != null) query.append("timeout", String(args.timeout))
if (apiKey !== undefined) headers.set("api-key", apiKey)

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