Email Handling for Opportunity

EmailSend.cmp

<aura:component controller="EmailSendController" implements="force:lightningQuickAction,force:hasRecordId,forceCommunity:availableForAllPageTypes" access="global">
   <!--Part 1 [for attribute declare]-->  
   <aura:attribute name="email" type="string"/>
   <aura:attribute name="subject" type="string"/>
   <aura:attribute name="body" type="string"/>
   <aura:attribute name="mailStatus" type="boolean" default="false"/>
    
   <!---Part 2 [header part] -->  
   <div class="slds-page-header" role="banner">
      <h1 class="slds-page-header__title slds-m-right--small slds-align-middle slds-truncate" title="this should match">
         Quick Email Send.
      </h1>
      <div class="slds-text-color--weak"></div>
   </div>
 
   <!---Part 3 [message display part] --> 
   <aura:if isTrue="{!v.mailStatus}">
      <div role="alertdialog" tabindex="-1" aria-labelledby="prompt-heading-id" aria-describedby="prompt-message-wrapper" class="slds-modal slds-fade-in-open slds-modal--prompt">
         <div class="slds-modal__container">
            <div class="slds-modal__header slds-theme--error slds-theme--alert-texture">
               <h2 class="slds-text-heading--medium" id="prompt-heading-id">Mail Status</h2>
            </div>
            <div class="slds-modal__content slds-p-around--medium">
               <div>
                  <p>Email Sent successfully to {!v.email}</p>
               </div>
            </div>
            <div class="slds-modal__footer slds-theme--default">
               <button class="slds-button slds-button--brand" onclick="{!c.closeMessage}">Close</button>
            </div>
         </div>
      </div>
      <div class="slds-backdrop slds-backdrop--open"></div>
   </aura:if>
   
   <!---Part 4 [mail fourm part]-->   
   <div class="slds-m-around--medium">
      <div class="slds-container--medium">
         <div class="slds-form--stacked">
            <div class="slds-form-element">
               <label class="slds-form-element__label" for="CC">Email</label>
               <div class="slds-form-element__control">
                  <ui:inputEmail class="slds-input" aura:id="email"  value="{!v.email}" required="true" placeholder="[email protected]"/>
               </div>
            </div>
            <div class="slds-form-element">
               <label class="slds-form-element__label" for="CC">Subject</label>
               <div class="slds-form-element__control">
                  <ui:inputText class="slds-input" aura:id="subject"  value="{!v.subject}" placeholder="Subject"/>
               </div>
            </div>
            <div class="slds-form-element">
               <label class="slds-form-element__label" for="textareaSample2">Mail Body</label>
               <div class="slds-form-element__control">
                  <lightning:inputRichText aura:id="body" value="{!v.body}" />
               </div>
            </div>
            <div class="slds-form-element">    
               <button class="slds-button slds-button--brand" onclick="{!c.sendMail}">Send</button>
            </div>
         </div>
      </div>
   </div>
</aura:component>

EmailSendController.apxc

public class EmailSendController {
    @AuraEnabled 
    public static void sendMailMethod(String mMail ,String mSubject ,String mbody, String mId){        
        List<Messaging.SingleEmailMessage> mails =  new List<Messaging.SingleEmailMessage>();     
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
        List<String> sendTo = new List<String>();
        sendTo.add(mMail);
        mail.setToAddresses(sendTo);
        // TEMP HARDCODED reply to address of email handler
        mail.setReplyTo('emailservice@i-298wrpbndoj5m9zi8zfudvnch4nuu79ntb5g3mcicuzd22wegn.1t-e2jjeac.eu16.apex.salesforce.com'); // change it with your mail address.
        mail.setSenderDisplayName('salesforce User'); 
        mail.setSubject('ref:' + mId + ' ' + mSubject);
        mail.setHtmlBody(mbody);
 		mail.setWhatId (mId);   
        mails.add(mail);
        Messaging.sendEmail(mails);
    }   
}

EmailSendController.js

({
    sendMail: function(component, event, helper) {
        var getEmail = component.get("v.email");
        var getSubject = component.get("v.subject");
        var getbody = component.get("v.body");
        if ($A.util.isEmpty(getEmail) || !getEmail.includes("@")) {
            alert('Please Enter valid Email Address');
        } else {
            helper.sendHelper(component, getEmail, getSubject, getbody, component.get("v.recordId"));
        }
    },
 
    closeMessage: function(component, event, helper) {
        component.set("v.mailStatus", false);
        component.set("v.email", null);
        component.set("v.subject", null);
        component.set("v.body", null);
    },
})

EmailSendHelper.js

({
    sendHelper: function(component, getEmail, getSubject, getbody, getTargetId) {
        var action = component.get("c.sendMailMethod");
        action.setParams({
            'mMail': getEmail,
            'mSubject': getSubject,
            'mbody': getbody,
            'mId' : getTargetId
        });
        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
                var storeResponse = response.getReturnValue();
                component.set("v.mailStatus", true);
            }
 
        });
        $A.enqueueAction(action);
    },
})

EmailService.apxc

global class EmailService implements Messaging.InboundEmailHandler {
    global Messaging.InboundEmailResult handleInboundEmail(Messaging.InboundEmail email, Messaging.Inboundenvelope envelope) {
        Opportunity opp;
        Messaging.InboundEmailResult result = new Messaging.InboundEmailResult();
        try {
            
            // Look for account whose name is the subject and create it if necessary
            if ([select count() from Opportunity where Id =:email.subject.substringAfter('ref:').left(18)] == 0) {
                opp = new Opportunity();
                opp.Name = email.subject;
                opp.StageName = 'Draft';
                opp.CloseDate = system.today();
                insert opp;
            } else {
                opp = [select Id from Opportunity where Id =:email.subject.substringAfter('ref:').left(18)];
            }

            Task tsk1=new Task();  
            tsk1.Subject = email.Subject;  
            tsk1.OwnerId=UserInfo.getUserId();  
            tsk1.Description = email.plainTextBody;  
            tsk1.WhatId = opp.Id;  
            tsk1.status = 'Completed';  
            insert tsk1; 
                
            
            if(email.textAttachments != null) {
                // Save attachments, if any
                for (Messaging.Inboundemail.TextAttachment tAttachment : email.textAttachments) {
                    Attachment attachment = new Attachment();
                    
                    attachment.Name = tAttachment.fileName;
                    attachment.Body = Blob.valueOf(tAttachment.body);
                    attachment.ParentId = opp.Id;
                    insert attachment;
                }
            }
            if(email.binaryAttachments != null) {
                for (Messaging.Inboundemail.BinaryAttachment bAttachment : email.binaryAttachments) {
                    Attachment attachment = new Attachment();
                    
                    attachment.Name = bAttachment.fileName;
                    attachment.Body = bAttachment.body;
                    attachment.ParentId = opp.Id;
                    insert attachment;
                }
            }
            result.success = true;
            result.message = (email.subject + ' matched');
        } catch (Exception e) {
            result.success = false;
            result.message = 'Oops, I failed. Error : '+e.getMessage();
        }
        return result;
    }
}