import {z} from 'zod'

export type CreateApiPublicUserCheckoutQuoteArgs = {'Content-Type': string, body: {country_id?: string | undefined, cycle_interval?: ('year' | 'month' | 'week' | 'day') | undefined, cycle_interval_count?: number | undefined, product_code?: string | undefined, product_protocol?: ('ipv4' | 'ipv6' | 'dual') | undefined, product_type?: ('datacenter' | 'isp' | 'residential') | undefined, promotional_code?: string | undefined, quantity: number, service_fulfillment_filter?: Record<string, never> | undefined}};

export type CreateApiPublicUserCheckoutQuoteOptions = {baseUrl?: string | undefined, APIPrivateKey?: string | undefined, APIPublicKey?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiPublicUserCheckoutQuoteResponse = z.object({data: z.object({before_discount_total: z.number().int().optional(), credit_balance: z.number().int().optional(), credit_only_checkout: z.boolean().optional(), customer_credit_balance_applied: z.boolean().optional(), customer_credit_balance_applied_amount: z.number().int().optional(), discount: z.number().int().optional(), discounted: z.boolean().optional(), invalid_reason: z.string().optional(), is_top_up: z.boolean().optional(), is_valid: z.boolean().optional(), line_items: z.array(z.object({item_country_id: z.string().optional(), item_name: z.string().optional(), item_per_unit_amount: z.number().int().optional(), item_price_id: z.string().optional(), item_price_type: z.string().optional(), item_quantity: z.number().int().optional(), item_total: z.number().int().optional(), item_type: z.string().optional(), service_fulfillment_filter: z.object({}).optional()})).optional(), promotional_code: z.string().optional(), promotional_code_id: z.string().optional(), top_up_amount: z.number().int().optional(), total: z.number().int().optional(), total_after_applied_credit: z.number().int().optional()}).optional(), message: z.string().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
};

/**
 * Generate Checkout Quote
 * 
 * POST /public/user/checkout/quote
 */
export const createApiPublicUserCheckoutQuote = async (args: CreateApiPublicUserCheckoutQuoteArgs, options?: CreateApiPublicUserCheckoutQuoteOptions) => {
const {baseUrl = "https://api.byteful.com/1.0", fetch: fetchFn = fetch, APIPrivateKey, APIPublicKey} = options ?? {}

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

if (args['Content-Type'] != null) headers.set("Content-Type", String(args['Content-Type']))
if (APIPrivateKey !== undefined) headers.set("X-API-Private-Key", APIPrivateKey)
if (APIPublicKey !== undefined) headers.set("X-API-Public-Key", APIPublicKey)

const url = `${baseUrl.replace(/\/+$/, '')}/public/user/checkout/quote${query.size > 0 ? `?${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(createApiPublicUserCheckoutQuoteResponse, await res.json())
};