import {z} from 'zod'

export type GetApiProductsIdVariationsArgs = {id: number, page?: number | undefined, per_page?: number | undefined};

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

export const currency = z.object({currency_code: z.string().optional(), currency_symbol: z.string().optional(), currency_symbol_pos: z.string().optional(), currency_minor_unit: z.number().int().optional(), currency_decimal_separator: z.string().optional(), currency_thousand_separator: z.string().optional(), currency_prefix: z.string().optional(), currency_suffix: z.string().optional()});

export const productImage = z.object({id: z.number().int().optional(), src: z.record(z.string(), z.string()).optional(), name: z.string().optional(), alt: z.string().optional(), position: z.number().int().optional(), featured: z.boolean().optional()});

export const productCategory = z.object({id: z.number().int().optional(), name: z.string().optional(), slug: z.string().optional(), rest_url: z.string().optional()});

export const productTag = z.object({id: z.number().int().optional(), name: z.string().optional(), slug: z.string().optional(), rest_url: z.string().optional()});

export const productAttribute = z.object({id: z.number().int().optional(), name: z.string().optional(), position: z.number().int().optional(), visible: z.boolean().optional(), variation: z.boolean().optional(), options: z.array(z.string()).optional()});

export const productVariation = z.object({id: z.number().int().optional(), parent_id: z.number().int().optional(), name: z.string().optional(), slug: z.string().optional(), permalink: z.string().optional(), sku: z.string().optional(), description: z.string().optional(), dates: z.object({created: z.string().optional(), created_gmt: z.string().optional(), modified: z.string().optional(), modified_gmt: z.string().optional()}).optional(), featured: z.boolean().optional(), prices: z.object({price: z.string().optional(), regular_price: z.string().optional(), sale_price: z.string().optional(), price_range: z.object({}).nullable().optional(), on_sale: z.boolean().optional(), date_on_sale: z.object({from: z.string().nullable().optional(), from_gmt: z.string().nullable().optional(), to: z.string().nullable().optional(), to_gmt: z.string().nullable().optional()}).optional(), currency: currency.optional()}).optional(), hidden_conditions: z.object({virtual: z.boolean().optional(), downloadable: z.boolean().optional(), manage_stock: z.boolean().optional(), sold_individually: z.boolean().optional(), shipping_required: z.boolean().optional()}).optional(), images: z.array(productImage).optional(), categories: z.array(productCategory).optional(), tags: z.array(productTag).optional(), attributes: z.array(productAttribute).optional(), stock: z.object({is_in_stock: z.boolean().optional(), stock_quantity: z.number().int().nullable().optional(), stock_status: z.enum(["instock", "outofstock", "onbackorder"]).optional(), backorders: z.enum(["no", "notify", "yes"]).optional(), backorders_allowed: z.boolean().optional(), backordered: z.boolean().optional(), low_stock_amount: z.number().int().nullable().optional()}).optional(), weight: z.object({value: z.string().nullable().optional(), unit: z.string().optional()}).optional(), dimensions: z.object({length: z.string().nullable().optional(), width: z.string().nullable().optional(), height: z.string().nullable().optional(), unit: z.string().optional()}).optional(), total_sales: z.number().int().optional(), add_to_cart: z.object({text: z.string().optional(), description: z.string().optional(), is_purchasable: z.boolean().optional(), purchase_quantity: z.object({min_purchase: z.number().int().optional(), max_purchase: z.number().int().optional()}).optional(), rest_url: z.string().optional()}).optional(), meta_data: z.array(z.object({key: z.string().optional(), value: z.string().optional()})).optional()});

export const getApiProductsIdVariationsResponse = z.array(productVariation);

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 product variations
 * 
 * GET /products/{id}/variations
 */
export const getApiProductsIdVariations = async (args: GetApiProductsIdVariationsArgs, options?: GetApiProductsIdVariationsOptions) => {
const {baseUrl = "https://example-store.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))

const url = `${baseUrl.replace(/\/+$/, '')}/products/${encodeURIComponent(String(args.id))}/variations${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(getApiProductsIdVariationsResponse, await res.json())
};