import {z} from 'zod'

export type AnyOrderCriteria = {type: string};

export type BuyXGetYCriteria = {type: string, criteriaAppliesTo?: 'PRODUCT' | undefined, criteriaProductIds?: Array<string> | undefined, eligibleForDiscountQuantity: number, requiredFullPriceQuantity: number, rewardAppliesTo?: 'PRODUCT' | undefined, rewardProductIds?: Array<string> | undefined};

export type MonetaryAmount = {currency?: ({currencyCode?: string | undefined, defaultFractionDigits?: number | undefined, displayName?: string | undefined, numericCode?: number | undefined, numericCodeAsString?: string | undefined, symbol?: string | undefined}) | undefined, value?: number | undefined};

export type CartTotalCriteria = {type: string, minimumCartTotal: MonetaryAmount};

export type ProductCriteria = {type: string, productId?: string | undefined, productName?: string | undefined};

export type PaymentPlanOptions = {type: 'NONE' | 'ALL_PAYMENTS'};

export type SubscriptionOptions = {type: 'EXCLUDED' | 'ALL_PAYMENTS' | 'LIMITED_PAYMENTS'};

export type BuyXGetYFixedAmountTemplate = {type: string, discountAmount: MonetaryAmount, maxApplicationsPerCart?: number | undefined};

export type BuyXGetYPercentageTemplate = {type: string, discountPercentage: number, maxApplicationsPerCart?: number | undefined};

export type FixedAmountTemplate = {type: string, discountAmount: MonetaryAmount};

export type SelectedShippingOption = {isAllServicesSelected?: boolean | undefined, selectedService?: ('FEDEX_GROUND' | 'FEDEX_GROUND_HOME_DELIVERY' | 'FEDEX_PRIORITY_OVERNIGHT' | 'FEDEX_STANDARD_OVERNIGHT' | 'FEDEX_2_DAY' | 'FEDEX_2_DAY_AM' | 'FEDEX_EXPRESS_SAVER' | 'FEDEX_FIRST_OVERNIGHT' | 'FEDEX_SAME_DAY' | 'FEDEX_SAME_DAY_CITY' | 'UPS_GROUND' | 'UPS_NEXT_DAY_AIR' | 'UPS_NEXT_DAY_AIR_SAVER' | 'UPS_NEXT_DAY_AIR_EARLY_AM' | 'UPS_TWO_DAY_AIR' | 'UPS_TWO_DAY_AIR_AM' | 'UPS_THREE_DAY_SELECT' | 'USPS_PRIORITY' | 'USPS_EXPRESS' | 'USPS_STANDARD') | undefined, shippingOptionId: string, shippingOptionName: string};

export type FreeShippingTemplate = {type: string, appliesToFulfillmentOptionType?: ('SHIPPING' | 'PICKUP' | 'LOCAL_DELIVERY') | undefined, selectedShippingOption?: SelectedShippingOption | undefined};

export type PercentageTemplate = {type: string, percentage: number};

export type AutoTrigger = {type: string};

export type PromoCodeTrigger = {type: string, promoCode: string};

export type CreateDiscountRequest = {criteria: AnyOrderCriteria | BuyXGetYCriteria | CartTotalCriteria | ProductCriteria, isLimitedUses?: boolean | undefined, isOncePerCustomer?: boolean | undefined, maxUsesAllowed?: number | undefined, name: string, paymentPlanOptions?: PaymentPlanOptions | undefined, subscriptionOptions?: SubscriptionOptions | undefined, template: BuyXGetYFixedAmountTemplate | BuyXGetYPercentageTemplate | FixedAmountTemplate | FreeShippingTemplate | PercentageTemplate, trigger: AutoTrigger | PromoCodeTrigger, validFrom: string, validTo?: string | undefined};

export type CreateApiV1CommerceDiscountsArgs = {Authorization: string, 'User-Agent': string, body: CreateDiscountRequest};

export type CreateApiV1CommerceDiscountsOptions = {baseUrl?: string | undefined, Authorization?: string | undefined, fetch?: typeof fetch | undefined};

export const anyOrderCriteria = z.object({type: z.string()});

export const buyXGetYCriteria = z.object({type: z.string(), criteriaAppliesTo: z.literal("PRODUCT").optional(), criteriaProductIds: z.array(z.string()).optional(), eligibleForDiscountQuantity: z.number().int().gte(1), requiredFullPriceQuantity: z.number().int().gte(1), rewardAppliesTo: z.literal("PRODUCT").optional(), rewardProductIds: z.array(z.string()).optional()});

export const monetaryAmount = z.object({currency: z.object({currencyCode: z.string().optional(), defaultFractionDigits: z.number().int().optional(), displayName: z.string().optional(), numericCode: z.number().int().optional(), numericCodeAsString: z.string().optional(), symbol: z.string().optional()}).optional(), value: z.number().optional()});

export const cartTotalCriteria = z.object({type: z.string(), minimumCartTotal: monetaryAmount});

export const productCriteria = z.object({type: z.string(), productId: z.string().optional(), productName: z.string().optional()});

export const paymentPlanOptions = z.object({type: z.enum(["NONE", "ALL_PAYMENTS"])});

export const subscriptionOptions = z.object({type: z.enum(["EXCLUDED", "ALL_PAYMENTS", "LIMITED_PAYMENTS"])});

export const buyXGetYFixedAmountTemplate = z.object({type: z.string(), discountAmount: monetaryAmount, maxApplicationsPerCart: z.number().int().gte(0).optional()});

export const buyXGetYPercentageTemplate = z.object({type: z.string(), discountPercentage: z.number().gt(0).lte(100), maxApplicationsPerCart: z.number().int().gte(0).optional()});

export const fixedAmountTemplate = z.object({type: z.string(), discountAmount: monetaryAmount});

export const selectedShippingOption = z.object({isAllServicesSelected: z.boolean().optional(), selectedService: z.enum(["FEDEX_GROUND", "FEDEX_GROUND_HOME_DELIVERY", "FEDEX_PRIORITY_OVERNIGHT", "FEDEX_STANDARD_OVERNIGHT", "FEDEX_2_DAY", "FEDEX_2_DAY_AM", "FEDEX_EXPRESS_SAVER", "FEDEX_FIRST_OVERNIGHT", "FEDEX_SAME_DAY", "FEDEX_SAME_DAY_CITY", "UPS_GROUND", "UPS_NEXT_DAY_AIR", "UPS_NEXT_DAY_AIR_SAVER", "UPS_NEXT_DAY_AIR_EARLY_AM", "UPS_TWO_DAY_AIR", "UPS_TWO_DAY_AIR_AM", "UPS_THREE_DAY_SELECT", "USPS_PRIORITY", "USPS_EXPRESS", "USPS_STANDARD"]).optional(), shippingOptionId: z.string(), shippingOptionName: z.string()});

export const freeShippingTemplate = z.object({type: z.string(), appliesToFulfillmentOptionType: z.enum(["SHIPPING", "PICKUP", "LOCAL_DELIVERY"]).optional(), selectedShippingOption: selectedShippingOption.optional()});

export const percentageTemplate = z.object({type: z.string(), percentage: z.number().gt(0).lte(100)});

export const autoTrigger = z.object({type: z.string()});

export const promoCodeTrigger = z.object({type: z.string(), promoCode: z.string()});

export const discount = z.object({criteria: z.union([anyOrderCriteria, buyXGetYCriteria, cartTotalCriteria, productCriteria]), id: z.string().optional(), isLimitedUses: z.boolean().optional(), isOncePerCustomer: z.boolean().optional(), lastRedeemedAt: z.string().optional(), maxUsesAllowed: z.number().int().optional(), name: z.string(), numberOfUses: z.number().int().optional(), paymentPlanOptions: paymentPlanOptions.optional(), status: z.enum(["ACTIVE", "SCHEDULED", "EXPIRED"]).optional(), subscriptionOptions: subscriptionOptions.optional(), template: z.union([buyXGetYFixedAmountTemplate, buyXGetYPercentageTemplate, fixedAmountTemplate, freeShippingTemplate, percentageTemplate]), trigger: z.union([autoTrigger, promoCodeTrigger]), validFrom: z.string(), validTo: z.string().optional(), websiteId: z.string().optional()});

export const discountResponse = z.object({discount: discount});

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
};

/**
 * Create discount
 * 
 * POST /v1/commerce/discounts
 */
export const createApiV1CommerceDiscounts = async (args: CreateApiV1CommerceDiscountsArgs, options?: CreateApiV1CommerceDiscountsOptions) => {
const {baseUrl = "https://api.squarespace.com", fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args['User-Agent'] != null) headers.set("User-Agent", String(args['User-Agent']))
if (Authorization !== undefined) headers.set('authorization', `Bearer ${Authorization}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/commerce/discounts${query.size > 0 ? `?${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(discountResponse, await res.json())
};