import {z} from 'zod'

export type GetApiV1KnowledgeBaseAuditRetrievalsArgs = {start: string, end: string, kb_ids?: (Array<string> | null) | undefined, statuses?: (Array<string> | null) | undefined, actor_user_id?: (string | null) | undefined, session_id?: (string | null) | undefined, limit?: number | undefined, cursor?: (string | null) | undefined};

export type GetApiV1KnowledgeBaseAuditRetrievalsOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const retrievalAuditLogSummary = z.object({ref: z.string().optional(), id: z.string(), created_at: z.string(), retrieval_status: z.string().nullable().optional(), serving_decision: z.string().nullable().optional(), audit_write_status: z.string().nullable().optional(), requested_kb_count: z.number().int().nullable().optional(), result_count: z.number().int().nullable().optional(), response_ref_count: z.number().int().nullable().optional(), eligible_version_count: z.number().int().nullable().optional(), duration_ms: z.number().int().nullable().optional(), actor_user_id: z.string().nullable().optional(), session_id: z.string().nullable().optional(), agent_id: z.string().nullable().optional(), rag_query_id: z.string().nullable().optional(), query_hash: z.string().nullable().optional(), query_hash_key_version: z.string().nullable().optional(), query_length_bucket: z.string().nullable().optional(), request_id: z.string().nullable().optional(), trace_id: z.string().nullable().optional()});

export const cursorPageRetrievalAuditLogSummary = z.object({items: z.array(retrievalAuditLogSummary), next_cursor: z.string().nullable().optional(), has_more: z.boolean()});

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
};

/**
 * Query governed KB retrieval-audit logs (incl. misses/blocks/errors)
 * 
 * GET /v1/knowledge-base/audit/retrievals
 */
export const getApiV1KnowledgeBaseAuditRetrievals = async (args: GetApiV1KnowledgeBaseAuditRetrievalsArgs, options: GetApiV1KnowledgeBaseAuditRetrievalsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.start != null) query.append("start", String(args.start))
if (args.end != null) query.append("end", String(args.end))
for (const item of args.kb_ids ?? []) query.append("kb_ids", String(item))
for (const item of args.statuses ?? []) query.append("statuses", String(item))
if (args.actor_user_id != null) query.append("actor_user_id", String(args.actor_user_id))
if (args.session_id != null) query.append("session_id", String(args.session_id))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/knowledge-base/audit/retrievals${query.size > 0 ? `?${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(cursorPageRetrievalAuditLogSummary, await res.json())
};