import {z} from 'zod'

export type GetApiApiV1UsageBreakdownArgs = {'X-Org-ID': string, group_by: 'provider' | 'model' | 'agent' | 'team' | 'user', period?: ('daily' | 'weekly' | 'monthly' | 'quarterly' | 'yearly') | undefined};

export type GetApiApiV1UsageBreakdownOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const usageBreakdownItem = z.object({group_by: z.string().optional(), group_value: z.string().optional(), cost_usd: z.number().optional(), tokens_in: z.number().int().optional(), tokens_out: z.number().int().optional(), request_count: z.number().int().optional(), percentage: z.number().optional()});

export const usageBreakdown = z.object({group_by: z.string().optional(), total_cost_usd: z.number().optional(), items: z.array(usageBreakdownItem).optional(), period: z.string().optional(), period_start: z.string().optional(), period_end: z.string().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 usage breakdown
 * 
 * GET /api/v1/usage/breakdown
 */
export const getApiApiV1UsageBreakdown = async (args: GetApiApiV1UsageBreakdownArgs, options?: GetApiApiV1UsageBreakdownOptions) => {
const {baseUrl = "https://orchestrator.getaxonflow.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-Org-ID'] != null) headers.set("X-Org-ID", String(args['X-Org-ID']))
if (args.group_by != null) query.append("group_by", String(args.group_by))
if (args.period != null) query.append("period", String(args.period))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/usage/breakdown${query.size > 0 ? `?${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(usageBreakdown, await res.json())
};