import {z} from 'zod'

export type PromotionRequestShipping = {shippingMethodId?: string | undefined, shippingPrice?: number | undefined};

export type PricePromoParam = {options?: {[key: string]: Record<string, never>} | undefined};

export type ItemPriceOverride = {sale?: number | undefined, base?: number | undefined};

export type PromotionRequestItem = {lineItemId?: number | undefined, priceList: string, sku?: string | undefined, itemId?: number | undefined, quantity: number, group?: Array<string> | undefined, hierarchy?: Array<Array<string>> | undefined, productAttributes?: ({[key: string]: Array<string> | string}) | undefined, priceParams?: PricePromoParam | undefined, price?: ItemPriceOverride | undefined, channel?: Array<number> | undefined, shippingMethodId?: string | undefined, shippingPrice?: number | undefined};

export type PromotionEvaluationRequest = {traceId?: string | undefined, isLoggedIn?: boolean | undefined, userId?: string | undefined, promoCodes?: Array<string> | undefined, shipping?: Array<PromotionRequestShipping> | undefined, items: Array<PromotionRequestItem>, date?: string | undefined, userProfile?: Array<{[key: string]: Array<string>}> | undefined};

export type CreateApiV1PromoEvaluatePromotionsArgs = {'x-site-context': string, body: PromotionEvaluationRequest};

export type CreateApiV1PromoEvaluatePromotionsOptions = {baseUrl?: string | undefined, AuthorizationToken?: string | undefined, fetch?: typeof fetch | undefined};

export const itemPrice = z.object({currency: z.string().optional(), base: z.number().optional(), kind: z.string().optional(), totalPrice: z.number().optional(), finalPrice: z.number().optional(), sale: z.number().optional()});

export const itemPriceAttributes = z.object({cost: z.number().optional(), floor: z.number().optional(), clearance: z.number().optional()});

export const offerDiscount = z.object({quantity: z.number().int().optional(), amount: z.number().optional(), unit: z.string().optional(), value: z.number().optional(), promoId: z.string().optional(), promoCode: z.string().optional(), promoTitle: z.string().optional(), type: z.string().optional(), application: z.number().int().optional(), isStackable: z.boolean().optional(), isAlwaysApplied: z.boolean().optional(), level: z.number().int().optional(), stackingType: z.enum(["STACKABLE", "EXCLUSIVE", "TYPE_EXCLUSIVE", "UNIVERSAL"]).optional(), proratedAmount: z.number().optional(), proratedQuantity: z.number().int().optional()});

export const promotionResponseItem = z.object({lineItemId: z.number().int().optional(), sku: z.string().optional(), itemId: z.number().int().optional(), priceList: z.string().optional(), group: z.array(z.string()).optional(), quantity: z.number().optional(), price: itemPrice.optional(), priceAttributes: itemPriceAttributes.optional(), discount: z.array(offerDiscount).optional(), attributes: z.record(z.string(), z.object({})).optional(), shippingPrice: z.number().optional(), shippingMethodId: z.string().optional(), shippingDiscount: z.number().optional()});

export const promotionResponseShipping = z.object({shippingMethodId: z.string().optional(), shippingPrice: z.number().optional(), shippingDiscount: z.number().optional()});

export const appliedDiscount = z.object({promoId: z.string().optional(), promoCode: z.string().optional(), promoTitle: z.string().optional(), type: z.string().optional(), amount: z.number().optional()});

export const suggestedProducts = z.object({promotionId: z.string().optional(), promotionTitle: z.string().optional(), itemId: z.string().optional(), sku: z.string().optional(), eligiblePriceLists: z.array(z.string()).optional(), quantity: z.number().int().optional(), free: z.boolean().optional(), discountType: z.enum(["%OFF", "AMOUNT_OFF", "FIXED_PRICE"]).optional(), amount: z.number().optional()});

export const couponError = z.object({promoCode: z.string().optional(), promoId: z.string().optional(), message: z.string().optional()});

export const rtpePromotionMessages = z.array(z.object({promoId: z.string().optional(), title: z.string().optional(), message: z.string().optional(), pages: z.array(z.enum(["PDP", "PLP", "Cart", "Checkout"])).optional(), locales: z.array(z.string()).optional(), type: z.enum(["DISCOUNT", "PROXIMITY", "POTENTIAL_DISCOUNT"]).optional(), threshold: z.number().int().optional()}));

export const promotionEvaluationResponse = z.object({items: z.array(promotionResponseItem).optional(), errors: z.array(z.string()).optional(), shipping: z.array(promotionResponseShipping).optional(), appliedDiscounts: z.array(appliedDiscount).optional(), suggestedProducts: z.array(suggestedProducts).optional(), notAppliedCoupons: z.array(couponError).optional(), promotionMessages: rtpePromotionMessages.optional(), success: z.boolean().optional()});

export const createApiV1PromoEvaluatePromotionsResponse = z.array(promotionEvaluationResponse);

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
};

/**
 * Evaluate promotions
 * 
 * POST /v1/promo/evaluate-promotions
 */
export const createApiV1PromoEvaluatePromotions = async (args: CreateApiV1PromoEvaluatePromotionsArgs, options?: CreateApiV1PromoEvaluatePromotionsOptions) => {
const {baseUrl = "https://live.copilot.fabric.inc", fetch: fetchFn = fetch, AuthorizationToken} = options ?? {}

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

if (args['x-site-context'] != null) headers.set("x-site-context", String(args['x-site-context']))
if (AuthorizationToken !== undefined) headers.set('authorization', `Bearer ${AuthorizationToken}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/promo/evaluate-promotions${query.size > 0 ? `?${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(createApiV1PromoEvaluatePromotionsResponse, await res.json())
};