import {z} from 'zod'

export type PromotionValidityCreate = {starts_at: string, ends_at?: (string | null) | undefined, recurring_weekdays: Array<'MONDAY' | 'TUESDAY' | 'WEDNESDAY' | 'THURSDAY' | 'FRIDAY' | 'SATURDAY' | 'SUNDAY'>};

export type PromotionEligibilityCreate = {scope: 'ALL' | 'ONLY' | 'EXCEPT', cluster_ids: Array<string>, strategy_ids: Array<string>, apply_to_all_channels: boolean, channel_ids: Array<string>};

export type PromotionBenefitCreate = {type: 'DISCOUNT' | 'SHIPPING' | 'GIFT', kind?: string | undefined, value?: number | undefined, apply_by?: ('CART' | 'ITEM') | undefined, quantity?: number | undefined, product_ids?: Array<string> | undefined};

export type PromotionItemRestrictionCreate = {dimension: 'PRODUCT' | 'CATEGORY', operator: 'IN' | 'NOT_IN', values: Array<string>};

export type PromotionConditionCreate = {type: 'ORDER_VALUE' | 'SHIPPING_TYPE' | 'PAYMENT_METHOD' | 'INSTALLMENTS', min?: number | undefined, max?: number | undefined, values?: Array<string> | undefined};

export type PromotionEligibleItemsLimitCreate = {limit: number, count_by: 'ORDER' | 'PRODUCT'};

export type PromotionUsageLimitsCreate = {per_customer?: (number | null) | undefined, total?: (number | null) | undefined, eligible_items?: (PromotionEligibleItemsLimitCreate | null) | undefined};

export type PromotionAccumulationCreate = {with_discount_promotions: boolean, with_manual_prices: boolean};

export type PromotionCreate = {code: string, name: string, description?: (string | null) | undefined, validity: PromotionValidityCreate, eligibility: PromotionEligibilityCreate, benefit: PromotionBenefitCreate, item_restrictions: Array<PromotionItemRestrictionCreate>, conditions: Array<PromotionConditionCreate>, usage_limits: PromotionUsageLimitsCreate, accumulation: PromotionAccumulationCreate, metadata?: Record<string, never> | undefined};

export type CreateApiApiV1PromotionsArgs = {body: PromotionCreate};

export type CreateApiApiV1PromotionsOptions = {baseUrl?: string | undefined, basic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const promotionCreateResponse = z.object({id: z.string(), code: z.string(), name: z.string(), description: z.string().nullable(), active: z.boolean(), validity: z.object({}), eligibility: z.object({}), benefit: z.object({}), item_restrictions: z.array(z.object({})), conditions: z.array(z.object({})), usage_limits: z.object({}), accumulation: z.object({}), metadata: z.object({}).nullable(), created_at: z.string(), updated_at: z.string()});

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 promotion
 * 
 * POST /api/v1/promotions
 * 
 * Also accepts auth: bearer
 */
export const createApiApiV1Promotions = async (args: CreateApiApiV1PromotionsArgs, options?: CreateApiApiV1PromotionsOptions) => {
const {baseUrl = "https://oms-api.tenant.krzlabs.io", fetch: fetchFn = fetch, basic} = options ?? {}

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

if (basic !== undefined) headers.set('authorization', `Basic ${btoa(`${basic.username}:${basic.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/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(promotionCreateResponse, await res.json())
};