Resolve #4941

1 files changed, 63 insertions, 0 deletions

diff --git a/src/server/api/endpoints/users/groups/invitations/accept.ts b/src/server/api/endpoints/users/groups/invitations/accept.ts
new file mode 100644
index 0000000000..33779dd349
--- /dev/null
+++ b/src/server/api/endpoints/users/groups/invitations/accept.ts
@@ -0,0 +1,63 @@
+import $ from 'cafy';
+import { ID } from '../../../../../../misc/cafy-id';
+import define from '../../../../define';
+import { ApiError } from '../../../../error';
+import { UserGroupJoinings, UserGroupInvites } from '../../../../../../models';
+import { genId } from '../../../../../../misc/gen-id';
+import { UserGroupJoining } from '../../../../../../models/entities/user-group-joining';
+
+export const meta = {
+	desc: {
+		'ja-JP': 'ユーザーグループへの招待を承認します。',
+		'en-US': 'Accept invite of a user group.'
+	},
+
+	tags: ['groups', 'users'],
+
+	requireCredential: true,
+
+	kind: 'write:user-groups',
+
+	params: {
+		inviteId: {
+			validator: $.type(ID),
+			desc: {
+				'ja-JP': '招待ID',
+				'en-US': 'The invite ID'
+			}
+		},
+	},
+
+	errors: {
+		noSuchInvitation: {
+			message: 'No such invitation.',
+			code: 'NO_SUCH_INVITATION',
+			id: '98c11eca-c890-4f42-9806-c8c8303ebb5e'
+		},
+	}
+};
+
+export default define(meta, async (ps, user) => {
+	// Fetch the invitation
+	const invite = await UserGroupInvites.findOne({
+		id: ps.inviteId,
+	});
+
+	if (invite == null) {
+		throw new ApiError(meta.errors.noSuchInvitation);
+	}
+
+	if (invite.userId !== user.id) {
+		throw new ApiError(meta.errors.noSuchInvitation);
+	}
+
+	// Push the user
+	await UserGroupJoinings.save({
+		id: genId(),
+		createdAt: new Date(),
+		userId: user.id,
+		userGroupId: invite.userGroupId
+	} as UserGroupJoining);
+
+	UserGroupInvites.delete(invite.id);
+});