feat(handlers): add editWebhook*(), deleteWebhook*(), getWebhook*() (#438)

* feat(handlers): add getWebhookWithToken

* Update webhook.ts

* remove(utils): dry constants

* feat(handlers): add more webhook functions

* move functions arround

* well that function is not needed

* better return types

* Apply suggestions from code review

Co-authored-by: Ayyan <ayyantee@gmail.com>

Co-authored-by: Ayyan <ayyantee@gmail.com>

src/api/handlers/webhook.ts

@@ -13,6 +13,7 @@ import {
   UpsertSlashCommandOptions,
   UpsertSlashCommandsOptions,
   WebhookCreateOptions,
+  WebhookEditOptions,
   WebhookPayload,
 } from "../../types/mod.ts";
 import { cache } from "../../util/cache.ts";
@@ -58,6 +59,87 @@ export async function createWebhook(
   ) as Promise<WebhookPayload>;
 }
 
+/** Edit a webhook. Requires the `MANAGE_WEBHOOKS` permission. Returns the updated webhook object on success. */
+export async function editWebhook(
+  channelID: string,
+  webhookID: string,
+  options: WebhookEditOptions,
+) {
+  const hasManageWebhooksPerm = await botHasChannelPermissions(
+    channelID,
+    ["MANAGE_WEBHOOKS"],
+  );
+  if (
+    !hasManageWebhooksPerm
+  ) {
+    throw new Error(Errors.MISSING_MANAGE_WEBHOOKS);
+  }
+
+  const result = await RequestManager.patch(endpoints.WEBHOOK_ID(webhookID), {
+    ...options,
+    channel_id: options.channelID,
+  });
+
+  return result as WebhookPayload;
+}
+
+/** Edit a webhook. Returns the updated webhook object on success. */
+export async function editWebhookWithToken(
+  webhookID: string,
+  webhookToken: string,
+  options: Omit<WebhookEditOptions, "channelID">,
+) {
+  const result = await RequestManager.patch(
+    endpoints.WEBHOOK(webhookID, webhookToken),
+    options,
+  );
+
+  return result as WebhookPayload;
+}
+
+/** Delete a webhook permanently. Requires the `MANAGE_WEBHOOKS` permission. Returns a undefined on success */
+export async function deleteWebhook(channelID: string, webhookID: string) {
+  const hasManageWebhooksPerm = await botHasChannelPermissions(
+    channelID,
+    ["MANAGE_WEBHOOKS"],
+  );
+  if (
+    !hasManageWebhooksPerm
+  ) {
+    throw new Error(Errors.MISSING_MANAGE_WEBHOOKS);
+  }
+
+  const result = await RequestManager.delete(endpoints.WEBHOOK_ID(webhookID));
+
+  return result;
+}
+
+/** Delete a webhook permanently. Returns a undefined on success */
+export async function deleteWebhookWithToken(
+  webhookID: string,
+  webhookToken: string,
+) {
+  const result = await RequestManager.delete(
+    endpoints.WEBHOOK(webhookID, webhookToken),
+  );
+
+  return result;
+}
+
+/** Returns the new webhook object for the given id. */
+export async function getWebhook(webhookID: string) {
+  const result = await RequestManager.get(endpoints.WEBHOOK_ID(webhookID));
+  return result as WebhookPayload;
+}
+
+/** Returns the new webhook object for the given id, this call does not require authentication and returns no user in the webhook object. */
+export async function getWebhookWithToken(webhookID: string, token: string) {
+  const result = await RequestManager.get(
+    endpoints.WEBHOOK(webhookID, token),
+  );
+  return result as WebhookPayload;
+}
+
 /** Execute a webhook with webhook ID and webhook token */
 export async function executeWebhook(
   webhookID: string,
@@ -117,11 +199,6 @@ export async function executeWebhook(
   return structures.createMessage(result as MessageCreateOptions);
 }
 
-/** Returns the new webhook object for the given id. */
-export function getWebhook(webhookID: string) {
-  return RequestManager.get(endpoints.WEBHOOK_ID(webhookID));
-}
-
 export function editWebhookMessage(
   webhookID: string,
   webhookToken: string,