import {z} from 'zod'

export type GetApiCabinetAdminStatsSalesSubscriptionsArgs = {days?: (number | null) | undefined, start_date?: (string | null) | undefined, end_date?: (string | null) | undefined};

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

export const salesByTariffItem = z.object({tariff_id: z.number().int(), tariff_name: z.string(), count: z.number().int()});

export const salesByPeriodItem = z.object({period_days: z.number().int(), count: z.number().int()});

export const dailySalesItem = z.object({date: z.string(), count: z.number().int(), revenue_kopeks: z.number().int()});

export const dailyTariffSalesItem = z.object({date: z.string(), tariff_name: z.string(), count: z.number().int()});

export const salesStatsResponse = z.object({total_sales: z.number().int(), total_revenue_kopeks: z.number().int(), avg_order_kopeks: z.number().int(), top_tariff_name: z.string(), by_tariff: z.array(salesByTariffItem), by_period: z.array(salesByPeriodItem), daily: z.array(dailySalesItem), daily_by_tariff: z.array(dailyTariffSalesItem)});

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 Sales Stats
 * 
 * GET /cabinet/admin/stats/sales/subscriptions
 */
export const getApiCabinetAdminStatsSalesSubscriptions = async (args: GetApiCabinetAdminStatsSalesSubscriptionsArgs, options: GetApiCabinetAdminStatsSalesSubscriptionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.days != null) query.append("days", String(args.days))
if (args.start_date != null) query.append("start_date", String(args.start_date))
if (args.end_date != null) query.append("end_date", String(args.end_date))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/cabinet/admin/stats/sales/subscriptions${query.size > 0 ? `?${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(salesStatsResponse, await res.json())
};