import {z} from 'zod'

export type GetPackageConsumptionRequest = {instanceID?: (string | null) | undefined, metricKey?: (string | null) | undefined};

export type CreateApiApiV2BillingConfigurationPackageConsumptionArgs = {body: GetPackageConsumptionRequest};

export type CreateApiApiV2BillingConfigurationPackageConsumptionOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const packageConsumptionItem = z.object({type: z.enum(["Free", "Purchased"]).optional(), total: z.number().optional(), consumed: z.number().optional(), expirationDateUtc: z.string().optional()});

export const getPackageConsumptionResponse = z.object({metricKey: z.string().nullable().optional(), aggregationDateUtc: z.string().optional(), results: z.array(packageConsumptionItem).nullable().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 information about package consumption
 * 
 * POST /api/v2/billing-configuration/package-consumption
 */
export const createApiApiV2BillingConfigurationPackageConsumption = async (args: CreateApiApiV2BillingConfigurationPackageConsumptionArgs, options?: CreateApiApiV2BillingConfigurationPackageConsumptionOptions) => {
const {baseUrl = "https://billing-insights.api.relativity.one/billing-drilldown-api", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/billing-configuration/package-consumption${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getPackageConsumptionResponse, await res.json())
};