import {z} from 'zod'

export type AddCoupon = {user_id: number, restaurant_id: number, coupon_code: string, discount: number, is_flat_discount_in_amount: boolean, no_of_quantity_allowed?: number | undefined, validity_start_date?: string | undefined, validity_end_date?: string | undefined, maximum_discount_amount: number, is_active: boolean};

export type UpdateApiCouponsCouponIdArgs = {couponId: number, body: AddCoupon};

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

export const coupon = z.object({id: z.number().int().optional(), created_at: z.string().optional(), updated_at: z.string().optional(), user_id: z.number().int().optional(), restaurant_id: z.number().int().optional(), coupon_code: z.string().optional(), discount: z.number().optional(), is_flat_discount_in_amount: z.number().int().optional(), no_of_quantity_allowed: z.number().int().optional(), no_of_quantity_used: z.number().int().optional(), validity_start_date: z.string().optional(), validity_end_date: z.string().optional(), maximum_discount_amount: z.number().optional(), is_active: z.number().int().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
};

/**
 * Update coupon by its id
 * 
 * PUT /coupons/{couponId}
 */
export const updateApiCouponsCouponId = async (args: UpdateApiCouponsCouponIdArgs, options: UpdateApiCouponsCouponIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/coupons/${encodeURIComponent(String(args.couponId))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", 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(coupon, await res.json())
};