import {z} from 'zod'

export type GetApiPimChannelsChannelIdItemsArgs = {channel_id: string, page?: Record<string, never> | undefined, sort?: string | undefined, relationships?: string | undefined, filter?: Record<string, never> | undefined};

export type GetApiPimChannelsChannelIdItemsOptions = {baseUrl: string, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const categoryItemData = z.object({type: z.string().optional(), id: z.string().optional(), attributes: z.object({string_field_example: z.object({value: z.string().optional()}).optional(), boolean_field_example: z.object({value: z.boolean().optional()}).optional(), numeric_field_example: z.object({value: z.number().optional()}).optional(), resource_field_example: z.object({value: z.string().optional(), meta: z.object({resource_item_id: z.string().optional(), resource_category_id: z.string().optional()}).optional()}).optional()}).optional(), links: z.object({self: z.string().optional()}).optional(), meta: z.object({category_id: z.string().optional(), family: z.string().optional(), path: z.array(z.string()).optional(), variation: z.string().optional(), variation_name: z.string().optional(), level: z.number().int().optional(), is_end_level: z.boolean().optional()}).optional()});

export const channelMeta = z.object({total: z.number().int().optional(), filters: z.array(z.object({field: z.string().optional(), operator_id: z.number().int().optional(), operator_codename: z.string().optional(), value: z.string().optional()})).optional(), sort: z.string().nullable().optional(), page: z.object({size: z.string().optional(), after: z.array(z.string()).optional()}).nullable().optional(), links: z.object({current: z.string().optional(), first: z.string().optional(), next: z.string().nullable().optional()}).optional()});

export const categoryItems = z.object({data: z.array(categoryItemData).optional(), meta: channelMeta.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
};

/**
 * Returns a list of Channel Items
 * 
 * GET /pim/channels/{channel_id}/items
 */
export const getApiPimChannelsChannelIdItems = async (args: GetApiPimChannelsChannelIdItemsArgs, options: GetApiPimChannelsChannelIdItemsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (args.page != null) query.append("page", JSON.stringify(args.page))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.relationships != null) query.append("relationships", String(args.relationships))
if (args.filter != null) query.append("filter", JSON.stringify(args.filter))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/pim/channels/${encodeURIComponent(String(args.channel_id))}/items${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(categoryItems, await res.json())
};