import {z} from 'zod'

export type BillingFilters = {categories?: (Array<'operationalComputeAndStorage' | 'operationalBucketBackup' | 'operationalClusterBackup' | 'analyticsCompute' | 'analyticsStorage' | 'analyticsClusterBackup' | 'appServicesComputeAndStorage' | 'dataTransferStandard' | 'privateEndpointsStandard' | 'aiServicesLLM' | 'aiServicesAiGateway' | 'aiServicesUdsPager' | 'aiServicesSdsPager' | 'dataApiStandard'>) | undefined, projectIds?: Array<string> | undefined, instanceIds?: Array<string> | undefined};

export type CategorizedBillingRequest = {startDate: string, endDate: string, filters?: BillingFilters | undefined};

export type CreateApiV4OrganizationsOrganizationIdBillingArgs = {body: CategorizedBillingRequest};

export type CreateApiV4OrganizationsOrganizationIdBillingOptions = {baseUrl?: string | undefined, token?: string | undefined, fetch?: typeof fetch | undefined};

export const billingCategoryBreakdown = z.object({category: z.string(), creditSpend: z.number().nullable().optional(), currencySpend: z.number().nullable().optional(), contributionPercent: z.number()});

export const billingPeriod = z.object({startDate: z.string(), endDate: z.string(), categories: z.array(billingCategoryBreakdown), totalCreditSpend: z.number().nullable().optional(), totalCurrencySpend: z.number().nullable().optional()});

export const billingPeriodTotal = z.object({startDate: z.string(), endDate: z.string(), categories: z.array(billingCategoryBreakdown), totalCreditSpend: z.number().nullable().optional(), totalCurrencySpend: z.number().nullable().optional()});

export const categorizedBillingResponse = z.object({data: z.object({periods: z.array(billingPeriod), total: billingPeriodTotal, billingCurrency: 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 Categorized Billing
 * 
 * POST /v4/organizations/{organizationId}/billing
 */
export const createApiV4OrganizationsOrganizationIdBilling = async (args: CreateApiV4OrganizationsOrganizationIdBillingArgs, options?: CreateApiV4OrganizationsOrganizationIdBillingOptions) => {
const {baseUrl = "https://cloudapi.cloud.couchbase.com", fetch: fetchFn = fetch, token} = options ?? {}

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

if (token !== undefined) headers.set('authorization', `Bearer ${token}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v4/organizations/${encodeURIComponent(String(args.organizationId))}/billing${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(categorizedBillingResponse, await res.json())
};