[NEW] Add delete channel mutation to GraphQL API (#11860)

packages/rocketchat-graphql/server/resolvers/channels/deleteChannel.js

+import { Meteor } from 'meteor/meteor';
+import { RocketChat } from 'meteor/rocketchat:lib';
+
+import { authenticated } from '../../helpers/authenticated';
+import schema from '../../schemas/channels/deleteChannel.graphqls';
+
+const resolver = {
+	Mutation: {
+		deleteChannel: authenticated((root, { channelId }, { user }) => {
+			const channel = RocketChat.models.Rooms.findOne({
+				_id: channelId,
+				t: 'c',
+			});
+
+			if (!channel) {
+				throw new Error('error-room-not-found', 'The required "channelId" param provided does not match any channel');
+			}
+
+			const sub = RocketChat.models.Subscriptions.findOneByRoomIdAndUserId(channel._id, user._id);
+
+			if (!sub) {
+				throw new Error(`The user/callee is not in the channel "${ channel.name }.`);
+			}
+
+			if (!sub.open) {
+				throw new Error(`The channel, ${ channel.name }, is already closed to the sender`);
+			}
+
+			Meteor.runAsUser(user._id, () => {
+				Meteor.call('eraseRoom', channel._id);
+			});
+
+			return true;
+		}),
+	},
+};
+
+export {
+	schema,
+	resolver,
+};

packages/rocketchat-graphql/server/resolvers/channels/index.js

@@ -9,6 +9,7 @@ import * as channelsByUser from './channelsByUser';
 import * as createChannel from './createChannel';
 import * as leaveChannel from './leaveChannel';
 import * as hideChannel from './hideChannel';
+import * as deleteChannel from './deleteChannel';
 // types
 import * as ChannelType from './Channel-type';
 import * as ChannelSort from './ChannelSort-enum';
@@ -26,6 +27,7 @@ export const schema = mergeTypes([
 	createChannel.schema,
 	leaveChannel.schema,
 	hideChannel.schema,
+	deleteChannel.schema,
 	// types
 	ChannelType.schema,
 	ChannelSort.schema,
@@ -44,6 +46,7 @@ export const resolvers = mergeResolvers([
 	createChannel.resolver,
 	leaveChannel.resolver,
 	hideChannel.resolver,
+	deleteChannel.resolver,
 	// types
 	ChannelType.resolver,
 ]);

packages/rocketchat-graphql/server/schemas/channels/deleteChannel.graphqls

+type Mutation {
+	deleteChannel(channelId: String!): Boolean
+}