import {z} from 'zod'

export type GetApiApiV1AnalyticsSystemArgs = {period?: ('24h' | '7d' | '30d') | undefined};

export type GetApiApiV1AnalyticsSystemOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiApiV1AnalyticsSystemResponse = z.object({type: z.string(), properties: z.object({overview: z.object({type: z.string(), properties: z.object({totalOrganizations: z.object({type: z.string()}), totalUsers: z.object({type: z.string()}), totalBids: z.object({type: z.string()}), totalVolume: z.object({type: z.string()}), avgOrganizationSize: z.object({type: z.string()})})}), growth: z.object({type: z.string(), properties: z.object({newOrganizations: z.object({type: z.string()}), newUsers: z.object({type: z.string()}), growthRate: z.object({type: z.string()})})}), activity: z.object({type: z.string(), properties: z.object({activeOrganizations: z.object({type: z.string()}), dailyApiCalls: z.object({type: z.string()}), avgBidsPerOrg: z.object({type: z.string()})})})})});

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 system-wide statistics
 * 
 * GET /api/v1/analytics/system
 */
export const getApiApiV1AnalyticsSystem = async (args: GetApiApiV1AnalyticsSystemArgs, options?: GetApiApiV1AnalyticsSystemOptions) => {
const {baseUrl = "https://xga-auction-system.workers.dev", fetch: fetchFn = fetch} = options ?? {}

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

if (args.period != null) query.append("period", String(args.period))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/analytics/system${query.size > 0 ? `?${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(getApiApiV1AnalyticsSystemResponse, await res.json())
};