import {z} from 'zod'

export type GetApiDiscountCodesArgs = {isActive?: boolean | undefined, scope?: string | undefined, category?: string | undefined, page?: (number | unknown) | undefined, pageSize?: (number | unknown) | undefined};

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

export const discountCodeDto = z.object({id: z.string().optional(), code: z.string().optional(), name: z.string().optional(), reason: z.string().nullable().optional(), category: z.string().nullable().optional(), applyTo: z.string().optional(), isActive: z.boolean().optional(), discountType: z.string().optional(), discountValue: z.union([z.number(), z.string()]).optional(), scope: z.string().optional(), validFrom: z.string().nullable().optional(), validTo: z.string().nullable().optional(), maxUsageCount: z.union([z.number().int(), z.string()]).nullable().optional(), usageCount: z.union([z.number().int(), z.string()]).optional(), minimumOrderAmount: z.union([z.number(), z.string()]).nullable().optional(), maxDiscountAmount: z.union([z.number(), z.string()]).nullable().optional(), createdAt: z.string().optional(), updatedAt: z.string().optional()});

export const discountCodeListResponseDto = z.object({items: z.array(discountCodeDto).optional(), total: z.union([z.number().int(), z.string()]).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
};

/**
 * Get a paginated list of discount codes with optional filters
 * 
 * GET /DiscountCodes
 */
export const getApiDiscountCodes = async (args: GetApiDiscountCodesArgs, options?: GetApiDiscountCodesOptions) => {
const {baseUrl = "https://api.clinicos.vet/backend/business", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.isActive != null) query.append("isActive", String(args.isActive))
if (args.scope != null) query.append("scope", String(args.scope))
if (args.category != null) query.append("category", String(args.category))
if (args.page != null) query.append("page", String(args.page))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/DiscountCodes${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(discountCodeListResponseDto, await res.json())
};