import {z} from 'zod'

export type EventHistogramParams = {start_time?: string | undefined, end_time?: string | undefined, bucket_seconds?: number | undefined};

export type CreateApiV1EventsMetricsArgs = {limit?: number | undefined, after?: (string | null) | undefined, before?: (string | null) | undefined, include_total?: boolean | undefined, store_identifier?: (string | string | null) | undefined, group_by?: ('store' | null) | undefined, include_previous?: boolean | undefined, body: EventHistogramParams};

export type CreateApiV1EventsMetricsOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const eventMetricsIngestion = z.object({files: z.number().int().optional(), high_quality_files: z.number().int().optional(), chunks: z.number().int().optional(), tokens: z.number().int().optional(), bytes: z.number().int().optional(), avg_ingestion_time: z.string().nullable().optional(), avg_queue_time: z.string().nullable().optional()});

export const eventMetricsSearch = z.object({semantic: z.number().int().optional(), reranked: z.number().int().optional(), rewritten: z.number().int().optional(), agentic: z.number().int().optional(), grep: z.number().int().optional(), qa: z.number().int().optional(), avg_search_time: z.string().nullable().optional(), p95_search_time: z.string().nullable().optional(), avg_agentic_search_time: z.string().nullable().optional(), p95_agentic_search_time: z.string().nullable().optional(), agentic_prompt_tokens: z.number().int().optional(), agentic_completion_tokens: z.number().int().optional(), avg_agentic_rounds: z.number().nullable().optional()});

export const eventMetricsCompletion = z.object({count: z.number().int().optional(), responses: z.number().int().optional(), prompt_tokens: z.number().int().optional(), cached_tokens: z.number().int().optional(), completion_tokens: z.number().int().optional(), tool_calls: z.number().int().optional(), function_tool_calls: z.number().int().optional(), avg_total_time: z.string().nullable().optional()});

export const eventMetricsEmbedding = z.object({requests: z.number().int().optional(), tokens: z.number().int().optional(), avg_time: z.string().nullable().optional(), p95_time: z.string().nullable().optional()});

export const eventMetricsReranking = z.object({requests: z.number().int().optional(), tokens: z.number().int().optional(), documents: z.number().int().optional(), avg_time: z.string().nullable().optional(), p95_time: z.string().nullable().optional()});

export const eventMetricsBucket = z.object({bucket_start: z.string(), bucket_end: z.string(), store_id: z.string().nullable().optional(), ingestion: eventMetricsIngestion, search: eventMetricsSearch, completion: eventMetricsCompletion, embedding: eventMetricsEmbedding, reranking: eventMetricsReranking});

export const cursorPaginationResponse = z.object({has_more: z.boolean(), first_cursor: z.string().nullable(), last_cursor: z.string().nullable(), total: z.number().int().nullable().optional()});

export const eventMetricsResponse = z.object({data: z.array(eventMetricsBucket), totals: z.array(eventMetricsBucket), previous_totals: z.array(eventMetricsBucket).nullable().optional(), pagination: cursorPaginationResponse.nullable().optional(), object: z.literal("event_metrics").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
};

/**
 * Get event metrics
 * 
 * POST /v1/events/metrics
 */
export const createApiV1EventsMetrics = async (args: CreateApiV1EventsMetricsArgs, options?: CreateApiV1EventsMetricsOptions) => {
const {baseUrl = "https://api.mixedbread.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 (args.limit != null) query.append("limit", String(args.limit))
if (args.after != null) query.append("after", String(args.after))
if (args.before != null) query.append("before", String(args.before))
if (args.include_total != null) query.append("include_total", String(args.include_total))
if (args.store_identifier != null) query.append("store_identifier", String(args.store_identifier))
if (args.group_by != null) query.append("group_by", String(args.group_by))
if (args.include_previous != null) query.append("include_previous", String(args.include_previous))
if (ApiKeyAuth !== undefined) headers.set('authorization', `Bearer ${ApiKeyAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/events/metrics${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", 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(eventMetricsResponse, await res.json())
};