import {z} from 'zod'

export type StoreId = string;

export type Item2 = {id?: string | undefined, displayName?: string | undefined, quantity?: number | undefined, price?: number | undefined, modifiers?: Array<Item2> | undefined};

export type Totals = {subTotal?: number | undefined, tax?: number | undefined, discount?: number | undefined, total?: number | undefined};

export type Order2 = {id?: string | undefined, currencyCode?: string | undefined, items?: Array<Item2> | undefined, totals?: Totals | undefined};

export type ComputeApplicableRewardsRequest = {userId: string, order?: Order2 | undefined};

export type CreateApiManagerLoyaltyV1SourceRewardsEvaluateArgs = {'X-Store-Id': StoreId, source: string, body: ComputeApplicableRewardsRequest};

export type CreateApiManagerLoyaltyV1SourceRewardsEvaluateOptions = {baseUrl?: string | undefined, OAuth20?: string | undefined, fetch?: typeof fetch | undefined};

export const triggerMenu = z.object({entityId: z.string().optional(), entityType: z.enum(["ITEM", "CATEGORY"]).optional(), minimumPurchaseQuantity: z.number().optional()});

export const trigger = z.object({menus: z.array(triggerMenu).optional()});

export const subtotalReward = z.object({amount: z.number().optional(), type: z.enum(["ABSOLUTE_DISCOUNT", "PERCENT_DISCOUNT"]).optional()});

export const menusReward = z.object({entityId: z.string().optional(), amount: z.number().optional(), type: z.enum(["ABSOLUTE_DISCOUNT", "PERCENT_DISCOUNT"]).optional()});

export const reward = z.object({id: z.string().optional(), type: z.enum(["SUBTOTAL", "MENUS"]).optional(), cost: z.number().optional(), costType: z.enum(["POINT", "DOLLAR"]).optional(), trigger: trigger.optional(), subtotal: subtotalReward.optional(), menus: z.array(menusReward).optional()});

export const computeApplicableRewardsResponse = z.object({rewards: z.array(reward).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
};

/**
 * Compute applicable rewards
 * 
 * POST /manager/loyalty/v1/{source}/rewards/evaluate
 */
export const createApiManagerLoyaltyV1SourceRewardsEvaluate = async (args: CreateApiManagerLoyaltyV1SourceRewardsEvaluateArgs, options?: CreateApiManagerLoyaltyV1SourceRewardsEvaluateOptions) => {
const {baseUrl = "https://partners.tryotter.com", fetch: fetchFn = fetch, OAuth20} = options ?? {}

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

if (args['X-Store-Id'] != null) headers.set("X-Store-Id", String(args['X-Store-Id']))
if (OAuth20 !== undefined) headers.set('authorization', `Bearer ${OAuth20}`)

const url = `${baseUrl.replace(/\/+$/, '')}/manager/loyalty/v1/${encodeURIComponent(String(args.source))}/rewards/evaluate${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(computeApplicableRewardsResponse, await res.json())
};