import {z} from 'zod'

export type GetApiV1EvalRunsActivityArgs = {created_from?: (string | null) | undefined, created_to?: (string | null) | undefined, scope?: ('live' | 'simulation' | 'test' | null) | undefined, channel?: (string | null) | undefined, evaluator_id?: (string | null) | undefined, agent_id?: (string | null) | undefined};

export type GetApiV1EvalRunsActivityOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const evalActivityBucket = z.object({date: z.string(), total: z.number().int().optional(), failed: z.number().int().optional(), errored: z.number().int().optional()});

export const evalActivityResponse = z.object({period_start: z.string(), period_end: z.string(), buckets: z.array(evalActivityBucket).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
};

/**
 * Day-bucketed eval-run activity
 * 
 * GET /v1/eval-runs/activity
 */
export const getApiV1EvalRunsActivity = async (args: GetApiV1EvalRunsActivityArgs, options: GetApiV1EvalRunsActivityOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.created_from != null) query.append("created_from", String(args.created_from))
if (args.created_to != null) query.append("created_to", String(args.created_to))
if (args.scope != null) query.append("scope", String(args.scope))
if (args.channel != null) query.append("channel", String(args.channel))
if (args.evaluator_id != null) query.append("evaluator_id", String(args.evaluator_id))
if (args.agent_id != null) query.append("agent_id", String(args.agent_id))
if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/eval-runs/activity${query.size > 0 ? `?${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(evalActivityResponse, await res.json())
};