MCWebhookCntrl

MCWebhookCntrl

public without sharing class MCWebhookCntrl {
    
    public PageReference UpdateUnsubscribeMembers() {
        String sCode = fetchSecrateCode();
        System.debug('***Secrate Code: ### ' + sCode );
        String MCrequestCode = ApexPages.currentPage().getParameters().get('code');
        if (MCrequestCode == null || !sCode.equals(MCrequestCode )) {
            System.debug('Code is not valid: Please use valid code: ' + MCrequestCode );
            return null;
        }
        String eventType= ApexPages.currentPage().getParameters().get('type');
        system.debug('Type of event: '+ eventType);
        
        if(eventType == 'upemail'){ //Email Changed event
            // Getting New Email
            String newEmail = ApexPages.currentPage().getParameters().get('data[new_email]');
            system.debug('Changed Email: ' +newEmail);
            // Getting Old Email
            String oldEmail = ApexPages.currentPage().getParameters().get('data[old_email]');
            system.debug('Old Email: ' +oldEmail );
            if (oldEmail == null || oldEmail.length() <= 0) {
                System.debug('Email Id is null or blank');
                return null;
            }
            else {
                System.debug('Email for Email Opt Out: ' + oldEmail );
            }
            String safeEmail = String.escapeSingleQuotes(oldEmail);
            safeEmail.replace('*', '\\*');
            safeEmail.replace('?', '\\?');
            // SOSL search for records (Contact)
            List<List<SObject>> searchList = [FIND :oldEmail IN EMAIL FIELDS RETURNING Contact(id) limit 1]; 
            //Contact List  
            List<Contact> contacts = ((List<Contact>)searchList[0]);
            // Getting first record. you can iterate the list to get all records.
            List<Contact> conListForUpdate = [select id,Email,MailChimpActivity__c from Contact where id =: contacts[0].id ];
            for (Contact c : conListForUpdate ) {
                if( c.MailChimpActivity__c ==null)
                     c.MailChimpActivity__c ='';
                c.MailChimpActivity__c += 'Email chnaged from '+c.Email+ ' to '+newEmail+'  \r\n' ;
                c.Email = newEmail;
            }
            // Update Lists
            if (conListForUpdate.size() > 0) {
                update conListForUpdate;
            }
        }
        // Unsubscribe/ Subscribe
        else if(eventType != 'profile'){
            
            String emailAddr = ApexPages.currentPage().getParameters().get('data[email]');
            if (emailAddr == null || emailAddr .length() <= 0) {
                System.debug('Email Id is null or blank');
                return null;
            }
            else {
                System.debug('Email for Email Opt Out: ' + emailAddr );
            }
            String safeEmail = String.escapeSingleQuotes(emailAddr);
            safeEmail.replace('*', '\\*');
            safeEmail.replace('?', '\\?');
            // SOSL search for records (Contact/Lead)
            List<List<SObject>> searchList = [FIND :emailAddr IN EMAIL FIELDS RETURNING Contact(id), Lead(id) ]; 
            //Contact List  
            List<Contact> contacts = ((List<Contact>)searchList[0]);
            //Lead List
            List<Lead> leads = ((List<Lead>)searchList[1]);
            for (Contact c : contacts) {
                if(eventType =='subscribe'){
                    c.HasOptedOutOfEmail = false;
                }else if(eventType =='unsubscribe'){
                    c.HasOptedOutOfEmail = true;
                }
               
            }
            for (Lead l : leads) {
                if(eventType =='subscribe'){
                    l.HasOptedOutOfEmail = false;
                }else if(eventType =='unsubscribe'){
                    l.HasOptedOutOfEmail = true;
                }
                
            }
            // Update Lists
            if (contacts.size() > 0) {
                update contacts;
            }
            if (leads.size() > 0) {
                update leads;
            }
        }
        return null;
    } 
    
    public String fetchSecrateCode() {
        try {
            StaticResource sr = [ SELECT Body, Name FROM StaticResource WHERE Name = 'WebHooksConfig' LIMIT 1 ];
            String xml = sr.Body.toString();
            System.debug('XML data: ' + xml);
            //XML parsing
            Dom.Document doc = new Dom.Document();
            doc.load(xml);
            Dom.XMLNode webhooks = doc.getRootElement();
            for (Dom.XMLNode node : webhooks.getChildElements()) {
                String id = node.getAttribute('id', '');
                if (id.equalsIgnoreCase('unsubscribe')) {
                    return node.getAttribute('code', '');
                }
            }
        }
        catch (Exception e) {
            System.debug('*** Something went wrong: Error Occured! : ' + e.getMessage());
        }
        return null;
    }
}