LiveChatTranscript_CreateSurveyURL.apxt

//This trigger updates the LiveChatTranscript.Survey_URL__c field with a valid SurveyInvitation URL and creates a lookup relationship from the SurveyInvitation.Chat_Transcript__c to the LiveChatTranscript
trigger LiveChatTranscript_CreateSurveyURL on LiveChatTranscript (before update) {
    for (LiveChatTranscript lct : Trigger.New){
        if(lct.Status == 'Waiting'){
            List<SurveyInvitation> thisSurveyInvitation = [SELECT Id, UUID, Name FROM SurveyInvitation WHERE ChatKey__c = :lct.ChatKey LIMIT 1];
            //Set the surveyName variable to the API name of your Survey record
            lct.Survey_URL__c = 'https://sdodemo-main-166ce2cf6b6-16bd728c779.force.com/consumer/survey/runtimeApp.app?invitationId=' + thisSurveyInvitation[0].Id + '&surveyName=hutch_test&UUID=' + thisSurveyInvitation[0].UUID;
            if (thisSurveyInvitation.size() > 0){ 
                try {
                    thisSurveyInvitation[0].Chat_Transcript__c = lct.Id;
                    update thisSurveyInvitation[0];
                } catch (DmlException e) {
                  system.debug('Case update error: ' + e);
                }
            }
        }
    }
}