trigger UpdateContactOwnerForTrial on Opportunity (after insert, after Update) {
    
     List<Contact> conList = new List<Contact>([select Id,ownerId from Contact where Id In (select ContactId from OpportunityContactRole where OpportunityId IN :Trigger.newMap.keySet())]); 
  	 List<Contact> contactsToUpdate = new List<Contact>{};
    
    for(Opportunity opp : trigger.new)
    {   
          for(Contact c: conList){
              c.ownerId = opp.ownerId;
              contactsToUpdate.add(c);
        }    
    }
   update contactsToUpdate; 

}

@isTest
public class TestUpdateContactOwnerForTrial {
	static testMethod void TestUpdateContactOwnerForTrialTest()
	{    
		Account a = new Account(Name = 'TestUpdateContactOwnerForTrial');
		a.Type = 'Customer';
		insert a;

		Contact newContact = new Contact(Lastname='testLastName', AccountId = a.Id );
		insert newContact;
	
        String opportunityName = 'TestUpdateContactOwnerForTrial';
        Opportunity o1 = new Opportunity(AccountId=a.Id, name=opportunityName, StageName='Closed Won', Accounting_Platform__c='QuickBooks Online (US)', CloseDate = Date.today() );
        insert o1;
        
		OpportunityContactRole ocr = new OpportunityContactRole(OpportunityId = o1.Id, ContactId = newContact.Id, Role='Decision Maker',Isprimary=true );
		insert ocr;
        
    }	
		
}

trigger billingSubscriptionEmail on Opportunity (before update) {


List<Addon_Opportunity__c> addOppList = new List<Addon_Opportunity__c>([SELECT Name,Amount__c,Quantity__c FROM Addon_Opportunity__c where Id__c IN :Trigger.newMap.keySet()]); 

List<Contact> conList = new List<Contact>([select Email from Contact where Id In (select ContactId from OpportunityContactRole where OpportunityId IN :Trigger.newMap.keySet())]); 

 Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
     Decimal planPrice=0 ;
    String[] toAddresses;
    if(addOppList!=null){
        for(Addon_Opportunity__c addon :addOppList){
                planPrice= planPrice+ addon.Amount__c;
            }    
  }
    for(Opportunity opp : trigger.new){
    
            if(opp.StageName=='Closed Won' && Trigger.oldMap.get(opp.Id).StageName!='Closed Won'){
                
                for(Contact c:conList){
                        if(c.Email.contains('webgility.com')){
                            toAddresses = new String[] {'test3@test.com','test1@test.com'};
                        }else{
                                 toAddresses = new String[] {'test4@test.com','test2@test.com'};
                        }     
                     String billingCycle;
                     String promo='';
                       
                        mail.setToAddresses(toAddresses );   
                        mail.setSubject('New Subscription - '+opp.Accounting_Platform__c+' - '+c.Email);   
                       if(opp.Billing_Cycle__c=='Monthly'){
                         billingCycle = 'Monthly';
                       }else{
                          billingCycle = 'Annual';  
                       }
                       
                      if(opp.promo_code__c!=null){
                          promo = opp.promo_code__c;
                      }else{
                          promo = 'None';
                      } 
                         Decimal P;
                       
                         if(opp.Recurring_Revenue__c==null) opp.Recurring_Revenue__c=0;
                         if(opp.One_Time_Fee__c==null) opp.One_Time_Fee__c=0;
                         P = (integer)opp.Recurring_Revenue__c +(integer)opp.One_Time_Fee__c-(integer)planPrice;
                         String template = 'Billing & Subscription Info:\n';
                         template+= '----------------------------------\n';
                       template+= 'Account Email: '+c.Email+'\n';
                         template+= 'Total Upfront Payment: $'+ opp.One_Time_Fee__c+'\n';  
                         template+= billingCycle+' Recurring Amount: $'+opp.Recurring_Revenue__c+'\n';
                         template+= 'Plan: '+opp.Plan__c+' ($'+P+')\n';
                         template+= 'Plan Tier: '+opp.Plan_Tier__c+'\n';
                         template+= '----------------------------------\n';
                         for(Addon_Opportunity__c addon :addOppList){
                             String qty='';
                             if(addon.Name=='Installation'){
                                addon.Name = 'Installation ,setup and traning';
                             }
                             if(addon.Name=='Add-on Users' || addon.Name=='Add-on Profile')
                             {
                                qty =  String.valueOf(addon.Quantity__c.format())+' ';
                             } 
                             template+= qty+addon.Name+': $'+addon.Amount__c;
                             template+= '\n';
                        }
                        template+= '\n';
                        template+= '----------------------------------\n';
                        template+= 'Recurring billing start date :'+opp.Purchase_Date__c+'\n';
                        template+= 'Promo Code :'+promo+'\n';
                        template+= 'SF Opportunity: '+'https://webgility.my.salesforce.com/'+Trigger.oldMap.get(opp.Id).Id;
                        List<String> args = new List<String>();
                   String formattedHtml = String.format(template, args);
                   
                    mail.setPlainTextBody(formattedHtml);
                         
                    } 
                   if(BillingEmailTriggerHandler.isFirstTime)
                        {
                          BillingEmailTriggerHandler.isFirstTime = false;  
                          Messaging.SendEmail(new Messaging.SingleEmailMessage[] {mail});  
                       }  
            }

    }

}