Apex Code to plot accounts and leads on map

AccountSearchController

public with sharing class AccountSearchController {
    @AuraEnabled
    public static List<Account> searchAccounts( String searchTerm, String searchOption, Integer searchLimit, Integer searchRadius ) {            
        List<Account> accounts = new List<Account>(); 
        if ( String.isNotBlank( searchTerm ) ) {
        	List<List<SObject>> results = [FIND :searchTerm IN ALL FIELDS
                    RETURNING Account(
                      Id, BillingAddress, BillingLatitude, BillingLongitude
                      WHERE BillingLatitude != Null AND BillingLongitude !=null
                      LIMIT 1)
            ];         
            Account[] tempAccts = (Account[])results[0];
            if (tempAccts != null) {
                Account centerAcct = tempAccts.get(0);              
                accounts = [
                    SELECT Id,Name,BillingAddress,Recent_Closed_Won_Date__c,Last_Sales_Activity__c,Last_Sales_Activity_By__c,Related_Opportunities_y__c,Owner_Alias__c,Client_Type_new__c,Industry,BillingState,BillingCity,BillingStreet,BillingPostalCode,BillingLatitude,BillingLongitude
                    FROM Account
                    WHERE DISTANCE (BillingAddress, Geolocation(:centerAcct.BillingLatitude, :centerAcct.BillingLongitude),'km')<:searchRadius
                    ORDER BY Related_Opportunities_y__c DESC
                    LIMIT :searchLimit
                ];             
            } 
        }  else {
                accounts = [
                    SELECT Id,Name,BillingAddress,Recent_Closed_Won_Date__c,Last_Sales_Activity__c,Last_Sales_Activity_By__c,Related_Opportunities_y__c,Owner_Alias__c,Client_Type_new__c,Industry,BillingState,BillingCity,BillingStreet,BillingPostalCode,BillingLatitude,BillingLongitude
                    FROM Account
                    WHERE BillingState = '東京都' AND BillingLatitude !=null AND BillingLongitude !=null
                    ORDER BY Related_Opportunities_y__c DESC
                    LIMIT :searchLimit
            	];
        }        
    	return accounts;
    }
    @AuraEnabled   
    public static List<Lead> searchLeads(  String searchTerm, String searchOption, Integer searchLimit, Integer searchRadius ) {            
        List<Lead> leads = new List<Lead>();   
        if ( String.isNotBlank( searchTerm ) ) {
	       	List<List<SObject>> results = [FIND :searchTerm IN ALL FIELDS
                           RETURNING Lead(
                           Id, Latitude, Longitude
                           WHERE Latitude != Null AND Longitude !=null
                           LIMIT 1)
                           ];
            Lead [] tempLeads = (Lead[])results[0];        
                if (tempLeads != null) {
                    Lead centerLead = tempLeads.get(0);
                    
                    leads = [
                        SELECT Id,LastName,Address,Company,State,City,Street,PostalCode,Latitude,Longitude,Owner__c, Client_Type_new__c
                        FROM Lead
                        WHERE Latitude !=null AND Longitude !=null AND DISTANCE (Address, Geolocation(:centerLead.Latitude, :centerLead.Longitude),'km')<:searchRadius
                        ORDER BY Company DESC
                        LIMIT :searchLimit
                    ];
                }
        } else {
            leads = [
                SELECT Id,LastName,Address,Company,State,City,Street,PostalCode,Latitude,Longitude,Owner__c, Client_Type_new__c
                FROM Lead
                WHERE State='東京都' AND Latitude !=null AND Longitude !=null
                ORDER BY Company DESC
                LIMIT :searchLimit
            ];
        }
    return leads;
    }
}