import {z} from 'zod'

export type CheckoutRatesShipFrom = {address_type?: string | undefined, address_line1?: string | undefined, address_line2?: string | undefined, address_line3?: string | undefined, city_locality?: string | undefined, state_province?: string | undefined, postal_code: string, country_code: string};

export type CheckoutRatesShipTo = {address_type?: string | undefined, address_line1?: string | undefined, address_line2?: string | undefined, address_line3?: string | undefined, city_locality?: string | undefined, state_province?: string | undefined, postal_code?: string | undefined, country_code?: string | undefined};

export type WeightUnit = 'pound' | 'ounce' | 'gram' | 'kilogram';

export type Weight = {value: number, unit: WeightUnit};

export type DimensionUnit = 'inch' | 'centimeter';

export type Dimensions = {unit: DimensionUnit, length: number, width: number, height: number};

export type CheckoutRatesItem = {name?: string | undefined, quantity?: number | undefined, sku?: string | undefined, price?: number | undefined, weight?: Weight | undefined, dimensions?: Dimensions | undefined};

export type CalculateCheckoutRatesRequestBody = {ship_from?: CheckoutRatesShipFrom | undefined, ship_to: CheckoutRatesShipTo, items: Array<CheckoutRatesItem>, currency?: string | undefined};

export type CreateApiV2CheckoutRatesConfigIdQuotesArgs = {body: CalculateCheckoutRatesRequestBody};

export type CreateApiV2CheckoutRatesConfigIdQuotesOptions = {baseUrl?: string | undefined, apiKeys?: string | undefined, fetch?: typeof fetch | undefined};

export const deliveryPrediction = z.object({delivery_date: z.string().nullable().optional(), confidence_level: z.enum(["high", "low"]).optional()});

export const checkoutRatesRateOption = z.object({quote_id: z.string().optional(), option_id: z.number().int().optional(), option_name: z.string().optional(), type: z.enum(["live_rate", "flat_rate", "free", "local_delivery"]).optional(), carrier_id: z.string().nullable().optional(), service_code: z.string().nullable().optional(), final_amount: z.number().optional(), currency: z.string().optional(), estimated_delivery_days: z.number().int().nullable().optional(), estimated_delivery_date: z.string().nullable().optional(), delivery_prediction: deliveryPrediction.optional()});

export const calculateCheckoutRatesResponseBody = z.object({config_id: z.string().optional(), rates: z.array(checkoutRatesRateOption).optional(), created_at: 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
};

/**
 * Calculate checkout rates
 * 
 * POST /v2/checkout_rates/{config_id}/quotes
 */
export const createApiV2CheckoutRatesConfigIdQuotes = async (args: CreateApiV2CheckoutRatesConfigIdQuotesArgs, options?: CreateApiV2CheckoutRatesConfigIdQuotesOptions) => {
const {baseUrl = "https://api.shipstation.com", fetch: fetchFn = fetch, apiKeys} = options ?? {}

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

if (apiKeys !== undefined) headers.set("api-key", apiKeys)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/checkout_rates/${encodeURIComponent(String(args.config_id))}/quotes${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(calculateCheckoutRatesResponseBody, await res.json())
};