import {z} from 'zod'

export type GetApiNotificationsArgs = {cursor?: (string | null) | undefined, notes?: (boolean | null) | undefined, event_id?: string | undefined};

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

export const paging = z.object({cursor: z.string().nullable().optional(), more: z.boolean()});

export const messageRoutingMethod = z.enum(["all", "single"]);

export const messageRoutingChannel = z.union([z.string(), z.lazy(() => messageRouting)]);

export const messageRouting: z.ZodType<MessageRouting> = z.object({method: messageRoutingMethod, channels: z.array(messageRoutingChannel)});

export const notificationTagData = z.object({id: z.string(), name: z.string()});

export const notificationTag = z.object({data: z.array(notificationTagData)});

export const notification = z.object({created_at: z.number().int(), updated_at: z.number().int(), id: z.string(), routing: messageRouting, tags: notificationTag.optional(), title: z.string().nullable().optional(), topic_id: z.string(), note: z.string().optional(), event_ids: z.array(z.string())});

export const notificationTemplateSummary = z.object({id: z.string(), name: z.string(), tags: z.array(z.string()), state: z.enum(["DRAFT", "PUBLISHED"]), created: z.number().int(), creator: z.string(), updated: z.number().int().optional(), updater: z.string().optional(), subscription_topic_id: z.string().optional(), topic_id: z.string().optional()});

export const notificationListResponse = z.object({paging: paging, results: z.array(z.union([notification, notificationTemplateSummary]))});

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
};

/**
 * List Notification Templates
 * 
 * GET /notifications
 */
export const getApiNotifications = async (args: GetApiNotificationsArgs, options?: GetApiNotificationsOptions) => {
const {baseUrl = "https://api.courier.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.notes != null) query.append("notes", String(args.notes))
if (args.event_id != null) query.append("event_id", String(args.event_id))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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