import {z} from 'zod'

export type GetApiApiOrgIdTracesServiceGraphTopologyCurrentArgs = {org_id: string, start_time?: number | undefined, end_time?: number | undefined, stream_name?: string | undefined};

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

export const serviceEdge = z.object({baseline_p50_latency_ns: z.number().int().gte(0).nullable().optional(), baseline_p95_latency_ns: z.number().int().gte(0).nullable().optional(), baseline_p99_latency_ns: z.number().int().gte(0).nullable().optional(), connection_type: z.string().nullable().optional(), error_rate: z.number(), failed_requests: z.number().int().gte(0), from: z.string().nullable().optional(), p50_latency_ns: z.number().int().gte(0), p95_latency_ns: z.number().int().gte(0), p99_latency_ns: z.number().int().gte(0), to: z.string(), total_requests: z.number().int().gte(0)});

export const unresolvedCounts = z.object({ambiguous: z.number().int().gte(0), cardinality: z.number().int().gte(0), ip_only: z.number().int().gte(0), no_peer: z.number().int().gte(0)});

export const topologyMeta = z.object({degraded: z.array(z.string()).optional(), processed_up_to: z.number().int().nullable().optional(), source: z.string(), unresolved: unresolvedCounts});

export const serviceNode = z.object({error_rate: z.number(), errors: z.number().int().gte(0), id: z.string(), instances: z.number().int().gte(0).nullable().optional(), kind: z.string().optional(), label: z.string(), p50_server_ns: z.number().int().gte(0).nullable().optional(), p95_server_ns: z.number().int().gte(0).nullable().optional(), p99_server_ns: z.number().int().gte(0).nullable().optional(), requests: z.number().int().gte(0), service_type: z.string().nullable().optional(), stream_name: z.string().nullable().optional(), unattributed_inbound: z.number().int().nullable().optional()});

export const serviceGraphData = z.object({edges: z.array(serviceEdge), meta: topologyMeta.nullable().optional(), nodes: z.array(serviceNode)});

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 current service graph topology
 * 
 * GET /api/{org_id}/traces/service_graph/topology/current
 */
export const getApiApiOrgIdTracesServiceGraphTopologyCurrent = async (args: GetApiApiOrgIdTracesServiceGraphTopologyCurrentArgs, options: GetApiApiOrgIdTracesServiceGraphTopologyCurrentOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (args.start_time != null) query.append("start_time", String(args.start_time))
if (args.end_time != null) query.append("end_time", String(args.end_time))
if (args.stream_name != null) query.append("stream_name", String(args.stream_name))
if (Authorization !== undefined) headers.set("Authorization", Authorization)

const url = `${baseUrl.replace(/\/+$/, '')}/api/${encodeURIComponent(String(args.org_id))}/traces/service_graph/topology/current${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(serviceGraphData, await res.json())
};