import {z} from 'zod'

export type GetApiApiTasksOutcomesArgs = {timeframe?: ('day' | 'week' | 'month' | 'all') | undefined};

export type GetApiApiTasksOutcomesOptions = {baseUrl: string, sessionCookie?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiApiTasksOutcomesResponse = z.object({timeframe: z.string().optional(), summary: z.object({total_done: z.number().int().optional(), with_outcome: z.number().int().optional(), by_outcome: z.object({}).optional(), avg_retry_count: z.number().optional(), avg_time_to_resolution_seconds: z.number().optional(), success_rate: z.number().optional()}).optional(), by_agent: z.object({}).optional(), by_priority: z.object({}).optional(), common_errors: z.array(z.object({error_message: z.string().optional(), count: z.number().int().optional()})).optional(), record_count: z.number().int().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 task outcome analytics
 * 
 * GET /api/tasks/outcomes
 * 
 * Also accepts auth: apiKey
 */
export const getApiApiTasksOutcomes = async (args: GetApiApiTasksOutcomesArgs, options: GetApiApiTasksOutcomesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, sessionCookie} = options ?? {}

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

if (args.timeframe != null) query.append("timeframe", String(args.timeframe))
if (sessionCookie !== undefined) cookies.push("__Host-mc-session=" + encodeURIComponent(sessionCookie))

const url = `${baseUrl.replace(/\/+$/, '')}/api/tasks/outcomes${query.size > 0 ? `?${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(getApiApiTasksOutcomesResponse, await res.json())
};