import {z} from 'zod'

export type ProductCatalogSKUsAPIVersion = 'v1';

export type GetApiApiV2ProductCatalogSkusArgs = {version: ProductCatalogSKUsAPIVersion, as_of_date?: string | undefined};

export type GetApiApiV2ProductCatalogSkusOptions = {baseUrl?: string | undefined, apiKeyAuth?: string | undefined, appKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const productCatalogSKUAllotment = z.object({child_sku_code: z.string(), hourly_quantity: z.number(), monthly_quantity: z.number().int(), parent_sku_code: z.string()});

export const productCatalogSKUOnDemandOption = z.enum(["hourly", "monthly"]);

export const productCatalogSKUPricingUnitType = z.enum(["block", "unit"]);

export const productCatalogSKUPricingTier = z.object({max_usage_quantity: z.number().int().nullable(), min_usage_quantity: z.number().int(), price: z.string(), pricing_unit_type: productCatalogSKUPricingUnitType});

export const productCatalogSKUTieredPricing = z.object({tiers: z.array(productCatalogSKUPricingTier)}).nullable();

export const productCatalogSKUPricingType = z.enum(["usage", "percent"]);

export const productCatalogSKUDataAttributesResponse = z.object({allotments: z.array(productCatalogSKUAllotment), billing_dimension: z.string(), billing_units: z.string().nullable(), currency: z.string(), default_on_demand_option: productCatalogSKUOnDemandOption, number_of_units_included_in_price: z.number().int(), on_demand_list_price: z.string().nullable(), on_demand_tiered: productCatalogSKUTieredPricing, pricing_type: productCatalogSKUPricingType, sku_name: z.string()});

export const productCatalogSKUType = z.literal("Sku");

export const productCatalogSKUDataResponse = z.object({attributes: productCatalogSKUDataAttributesResponse, id: z.string(), type: productCatalogSKUType});

export const productCatalogSKUsResponse = z.object({data: z.array(productCatalogSKUDataResponse)});

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
};

/**
 * List SKUs
 * 
 * GET /api/v2/product-catalog/skus
 * 
 * Also accepts auth: AuthZ, AuthZ
 */
export const getApiApiV2ProductCatalogSkus = async (args: GetApiApiV2ProductCatalogSkusArgs, options?: GetApiApiV2ProductCatalogSkusOptions) => {
const {baseUrl = "https://api.datadoghq.com", fetch: fetchFn = fetch, apiKeyAuth, appKeyAuth} = options ?? {}

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

if (args.version != null) query.append("version", String(args.version))
if (args.as_of_date != null) query.append("as_of_date", String(args.as_of_date))
if (apiKeyAuth !== undefined) headers.set("DD-API-KEY", apiKeyAuth)
if (appKeyAuth !== undefined) headers.set("DD-APPLICATION-KEY", appKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/product-catalog/skus${query.size > 0 ? `?${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(productCatalogSKUsResponse, await res.json())
};