public with sharing class TwilioCloudCommunicationClass {  
  
// Public Properties  
public String SelectedMobileNumber{get;set;}  
public String OtherMobileNumber{get;set;}  
public String textMessage{get;set;}  
  
// Default construtor  
public TwilioCloudCommunicationClass()  
{  
    SelectedMobileNumber  = '' ;  
    OtherMobileNumber = '' ;  
}  
  
Public List getPersonList()  
{  
    Try{  
        List localList = new List();  
        localList.add(new SelectOption('' , '--Select--'));  
        for(contact cont : [select Name,MobilePhone from contact where TwilioRegisteredUser__c = true ])  
        {  
            localList.add(new SelectOption(cont.MobilePhone , cont.Name));            
        }        
        localList.add(new SelectOption('other' , 'Other'));  
        return localList ;  
    }  
    catch(Exception e)  
    {  
        ApexPages.addMessages(e);        
        return null;  
    }  
}  
  
public void SendSMS()  
{  
    Try{        
        SelectedMobileNumber = (SelectedMobileNumber == '')? OtherMobileNumber:SelectedMobileNumber ;  
        if(SelectedMobileNumber != '')  
        {  
            List AdminInfo = TwilioConfig__c.getall().values();  
            String ACCOUNT_SID = '';  
            String AUTH_TOKEN  = '' ;              
            String SenderMobileNumber = '' ;  
            // Informaton getting from custom setting  
            if(AdminInfo.size()>0)  
            {            
                ACCOUNT_SID             = AdminInfo[0].AccountSid__c;  
                AUTH_TOKEN              = AdminInfo[0].AuthToken__c;                  
                SenderMobileNumber      = AdminInfo[0].Admin_Mobile_Number__c;      
            }              
            TwilioRestClient client = new TwilioRestClient(ACCOUNT_SID, AUTH_TOKEN);  
             
            Map properties = new Map {  
                        'To'   => SelectedMobileNumber ,  
                        'From' => SenderMobileNumber,  
                        'Body' => textMessage  
                };  
            TwilioSMS message = client.getAccount().getSmsMessages().create(properties);  
            ApexPages.addMessage(new ApexPages.message(ApexPages.severity.INFO, 'Message has been sent'));  
        }  
        else  
        {  
            ApexPages.addMessage(new ApexPages.message(ApexPages.severity.Error, 'Pelase provide valid Mobile Number '));  
        }  
    }catch(Exception e )  
    {  
        ApexPages.addMessages(e);        
        return ;  
    }    
}  
  
}