Rocket.Chat/server/methods/reportMessage.js

Meteor.methods({
	reportMessage(messageId, description) {
		check(messageId, String);
		check(description, String);

		if (!Meteor.userId()) {
			throw new Meteor.Error('error-invalid-user', 'Invalid user', {
				method: 'reportMessage',
			});
		}

		if ((description == null) || description.trim() === '') {
			throw new Meteor.Error('error-invalid-description', 'Invalid description', {
				method: 'reportMessage',
			});
		}

		const message = RocketChat.models.Messages.findOneById(messageId);
		if (!message) {
			throw new Meteor.Error('error-invalid-message_id', 'Invalid message id', {
				method: 'reportMessage',
			});
		}

		return RocketChat.models.Reports.createWithMessageDescriptionAndUserId(message, description, Meteor.userId());
	},
});