<aura:component controller="InsertContactsToAccount" 
                Implements="flexipage:availableForRecordHome,
                            force:hasRecordId,
                            flexipage:availableForAllPageTypes,
                            force:lightningQuickActionWithoutHeader"> 
    
    <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>
    <aura:handler name="DeleteRowEvent" event="c:DeleteRowEvent" action="{!c.removeDeletedRow}"/>
    <aura:handler name="AddNewRowEvent" event="c:AddNewRowEvent" action="{!c.addNewRow}"/>
   
    <aura:attribute name="contactList" type="Contact[]"/> 
      <aura:attribute name="recordId" type="Id" /> 
      
    <div class="slds-page-header">
        <h1 class="slds-page-header__title">Create Contacts</h1>
    </div>
             
    <table class="slds-table slds-table_bordered slds-table_cell-buffer"> 
        <thead>
            <tr class="slds-text-title_caps">
                <th scope="col">
                    <div class="slds-truncate">S.No</div>
                </th>
                <th scope="col">
                    <div class="slds-truncate" title="First Name">First Name</div>
                </th>
                <th scope="col">
                    <div class="slds-truncate" title="Last Name">Last Name</div>
                </th>
                <th scope="col">
                    <div class="slds-truncate" title="Phone">Phone</div>
                </th>
                <th scope="col">
                    <div class="slds-truncate" title="Email">Email</div>
                </th>
            </tr>
        </thead>   
        <tbody>      
            <aura:iteration items="{!v.contactList}" var="item" indexVar="index">
                <c:AddRowChildComponent ContactInstance="{!item}" rowIndex="{!index}" />
            </aura:iteration>
        </tbody>
    </table>
    <br/>
    <div class="modal-footer slds-modal__footer slds-size_1-of-1">
        <lightning:button class="slds-button slds-button_brand" onclick="{!c.save}">Save</lightning:button>
        <lightning:button variant="Neutral" class="slds-button" label="Cancel" onclick="{!c.handleClose}"/>
    </div>
</aura:component>

({
    doInit: function(component, event, helper) { 
        helper.createObjectData(component, event);
    },
    
    save: function(component, event, helper) {
        if (helper.validateRequired(component, event)) {
            var action = component.get("c.saveContacts");
            action.setParams({
                "listContact":component.get("v.contactList"),
                "recordId":component.get("v.recordId")
            });
            action.setCallback(this, function(response) {
                var state = response.getState();
                if (state === "SUCCESS") {
                    component.set("v.contactList", []);
                    helper.createObjectData(component, event);
                    alert('Contact Records are Saved');
                }
            });
            $A.enqueueAction(action);
        }
    },
  
    addNewRow: function(component, event, helper) {
        helper.createObjectData(component, event);
    },
 
    removeDeletedRow: function(component, event, helper) {
        var index = event.getParam("indexVar");    
        var allRowsList = component.get("v.contactList");
        allRowsList.splice(index, 1);
        component.set("v.contactList", allRowsList);
    },
    
    handleClose : function(component, event, helper) {
        $A.get("e.force:closeQuickAction").fire() 
    }
})

({
    createObjectData: function(component, event) { 
        var RowItemList = component.get("v.contactList");
        RowItemList.push({
            'sobjectType': 'Contact',
            'FirstName': '',
            'LastName': '',
            'Phone': '',
            'Email': ''
        });  
        component.set("v.contactList", RowItemList);
    },  
    validateRequired: function(component, event) {
        var isValid = true;
        var allContactRows = component.get("v.contactList");
        for (var indexVar = 0; indexVar < allContactRows.length; indexVar++) {
            if (allContactRows[indexVar].LastName == '') {
                isValid = false;
                alert('Last Name Cannot be Blank on Row Number ' + (indexVar + 1));
            }
        }
        return isValid;
    },
})

public class InsertContactsToAccount {
    
   @AuraEnabled
    public static void saveContacts(List<Contact> listContact, Id recordId)
    {
        Insert listContact;
        for(Contact a:listContact){
            a.AccountId = recordId;
            listContact.add(a);
        }
        update listContact;
    } 
}