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+[![Open in Visual Studio Code](https://classroom.github.com/assets/open-in-vscode-718a45dd9cf7e7f842a935f5ebbe5719a5e09af4491e668f4dbf3b35d5cca122.svg)](https://classroom.github.com/online_ide?assignment_repo_id=14674892&assignment_repo_type=AssignmentRepo)
 
 # Developer Kickstart Module 6: Apex Triggers
 

force-app/main/default/triggers/AccountTrigger.trigger

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+trigger AccountTrigger on Account (before insert, after insert) {
+
+    switch on Trigger.operationType {
+        when BEFORE_INSERT {
+            for (Account acc : Trigger.new) {
+                //Solution 1
+                if (acc.Type == null) {
+                    acc.Type = 'Prospect';
+                }
+
+                //Solution 2
+                acc.BillingStreet = acc.ShippingStreet ?? '';
+                acc.BillingCity = acc.ShippingCity ?? '';
+                acc.BillingState = acc.ShippingState ?? '';
+                acc.BillingPostalCode = acc.ShippingPostalCode ?? '';
+                acc.BillingCountry = acc.ShippingCountry ?? '';
+
+                //Solution 3
+                if (acc.Fax != null && acc.Phone != null && acc.Website != null) {
+                    acc.Rating = 'Hot'; 
+                }
+            }            
+        }
+        when AFTER_INSERT {
+            //Solution 4
+            List<Contact> contactsToInsert = new List<Contact>();
+            for (Account acc : Trigger.new) {
+                Contact con = new Contact();
+                con.LastName = 'DefaultContact';
+                con.Email = 'default@email.com';
+                con.AccountId = acc.Id;
+                contactsToInsert.add(con);
+            }
+            if (contactsToInsert.size() > 0) {
+                insert contactsToInsert;
+            }
+        }
+        when else {
+            System.debug('AccountTrigger WHEN ELSE ACTIVATED');
+        }
+    }
+}

force-app/main/default/triggers/AccountTrigger.trigger-meta.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<ApexTrigger xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>60.0</apiVersion>
+    <status>Active</status>
+</ApexTrigger>

force-app/main/default/triggers/OpportunityTrigger.trigger

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+trigger OpportunityTrigger on Opportunity (before update, before delete) {
+
+    switch on Trigger.operationType {
+
+        when BEFORE_DELETE {
+
+            //Solution 6
+            //Get account ids of opportunities to be deleted
+            Set<Id> accountIds = new Set<Id>();
+            for (Opportunity opp : Trigger.old) {
+                if (opp.StageName == 'Closed Won') {
+                    accountIds.add(opp.AccountId);
+                }
+            }
+
+            //Create a map of accounts based on the accountIds
+            Map<Id, Account> accountToIdMap = new Map<Id, Account>([SELECT Id, Industry FROM Account WHERE Id IN :accountIds]);
+
+            for (Opportunity opp : Trigger.old) {
+                if (opp.StageName == 'Closed Won') {
+                    Account acc = accountToIdMap.get(opp.AccountId);
+                    if (acc.Industry == 'Banking') {
+                        opp.addError('Cannot delete closed opportunity for a banking account that is won');
+                    }
+                }
+            }
+        }
+
+        when BEFORE_UPDATE {
+            //Solution 5
+            for (Opportunity opp : Trigger.new) {
+                if (opp.Amount == null || opp.Amount <= 5000) {
+                    opp.Amount.addError('Opportunity amount must be greater than 5000');
+                }
+            }
+
+            //Solution 7
+            Set<Id> accIds = new Set<Id>();
+            for (Opportunity opp : Trigger.new) {
+                accIds.add(opp.AccountId);
+            }
+
+            Map<Id, Contact> conIdMap = new Map<Id, Contact>();
+            for (Contact con : [SELECT Id, AccountId FROM Contact WHERE AccountId IN :accIds AND Title = 'CEO']) {
+                conIdMap.put(con.AccountId, con);
+            }
+
+            for (Opportunity opp : Trigger.new) {
+                Contact ceoCon = conIdMap.get(opp.AccountId);
+                if (ceoCon != null) {
+                    opp.Primary_Contact__c = ceoCon.Id;
+                }
+            }
+        }
+
+        when else {
+            System.debug('OpportunityTrigger WHEN ELSE ACTIVATED.');     
+        }
+    }
+}

force-app/main/default/triggers/OpportunityTrigger.trigger-meta.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<ApexTrigger xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>60.0</apiVersion>
+    <status>Active</status>
+</ApexTrigger>