import {z} from 'zod'

export type GetApiV1DiscountsSearchArgs = {page_number?: number | undefined, page_size?: number | undefined, product_id?: string | undefined, status?: ('active' | 'deleted') | undefined, type?: ('percentage' | 'fixed') | undefined, created_after?: string | undefined, created_before?: string | undefined};

export type GetApiV1DiscountsSearchOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const environmentMode = z.enum(["test", "prod", "sandbox"]);

export const discountEntity = z.object({id: z.string(), mode: environmentMode, object: z.string(), status: z.enum(["deleted", "active", "draft", "expired", "scheduled"]), name: z.string(), code: z.string(), type: z.enum(["percentage", "fixed"]), amount: z.number().optional(), currency: z.string().optional(), percentage: z.number().optional(), expiry_date: z.string().optional(), max_redemptions: z.number().optional(), duration: z.enum(["forever", "once", "repeating"]).optional(), duration_in_months: z.number().optional(), applies_to_products: z.array(z.string()).optional(), redeem_count: z.number().optional()});

export const paginationEntity = z.object({total_records: z.number(), total_pages: z.number(), current_page: z.number(), next_page: z.number().nullable(), prev_page: z.number().nullable()});

export const discountListEntity = z.object({items: z.array(discountEntity), pagination: paginationEntity});

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
};

/**
 * Search discounts
 * 
 * GET /v1/discounts/search
 */
export const getApiV1DiscountsSearch = async (args: GetApiV1DiscountsSearchArgs, options?: GetApiV1DiscountsSearchOptions) => {
const {baseUrl = "https://api.creem.io", fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

if (args.page_number != null) query.append("page_number", String(args.page_number))
if (args.page_size != null) query.append("page_size", String(args.page_size))
if (args.product_id != null) query.append("product_id", String(args.product_id))
if (args.status != null) query.append("status", String(args.status))
if (args.type != null) query.append("type", String(args.type))
if (args.created_after != null) query.append("created_after", String(args.created_after))
if (args.created_before != null) query.append("created_before", String(args.created_before))
if (ApiKey !== undefined) headers.set("x-api-key", ApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/discounts/search${query.size > 0 ? `?${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(discountListEntity, await res.json())
};