import {z} from 'zod'

export type GetApiCartsCartIdItemsAppMetafieldsArgs = {cart_id: string, 'filters[]'?: Array<string> | undefined};

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

export const appMetafieldValue = z.object({id: z.string().optional(), namespace: z.string().optional(), key: z.string().optional(), field_type: z.enum(["single_line_text_field", "multi_line_text_field", "number_integer", "number_decimal", "json", "boolean", "url"]).optional(), field_value: z.union([z.string(), z.number(), z.boolean(), z.object({})]).optional(), created_at: z.string().optional(), updated_at: z.string().optional(), metafield_type: z.enum(["merchant", "app"]).optional(), resource_id: z.string().optional(), application_id: z.string().optional()});

export const getApiCartsCartIdItemsAppMetafieldsResponse = z.object({items: z.array(appMetafieldValue).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 app metafields attached to cart items of specific cart
 * 
 * GET /carts/{cart_id}/items/app_metafields
 */
export const getApiCartsCartIdItemsAppMetafields = async (args: GetApiCartsCartIdItemsAppMetafieldsArgs, options?: GetApiCartsCartIdItemsAppMetafieldsOptions) => {
const {baseUrl = "https://open.shopline.io/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

for (const item of args['filters[]'] ?? []) query.append("filters[]", String(item))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/carts/${encodeURIComponent(String(args.cart_id))}/items/app_metafields${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(getApiCartsCartIdItemsAppMetafieldsResponse, await res.json())
};