added --verify (#87)

Checks configuration file if it exists, then loads the data

server/src/main/java/edu/sjsu/moth/server/MothCommandLine.java

@@ -6,15 +6,20 @@
 import picocli.CommandLine;
 import picocli.CommandLine.Command;
 import picocli.CommandLine.Parameters;
-
+import java.io.FileInputStream;
 import java.io.File;
 import java.util.HashMap;
-
+import java.util.Properties;
 @Command(name = "moth-server", mixinStandardHelpOptions = true)
 public class MothCommandLine implements Runnable {
     @Parameters(index = "0", description = "Config file")
     private File configFile;
 
+    @CommandLine.Option(names = {"-v","--verify"} ,description = "verify")
+    private boolean verification;
+
+    public final Properties properties = new Properties();
+
     @Parameters(index = "1..*", description = "extra spring arguments")
     private String[] springArgs;
 
@@ -30,6 +35,22 @@ public static void main(String[] args) {
     public void run() {
         final var prefix = "spring.";
         try {
+            if(verification){
+                File f = new File(configFile.toURI());
+                if(f.isFile()) {
+
+                    FileInputStream fileInputStream = new FileInputStream(f);
+                    properties.load(fileInputStream);
+                    System.out.println("VERIFIED");
+
+                    System.exit(1);
+                }
+                else
+                {
+                    System.out.println("File not found, Please input proper configuration file");
+                    System.exit(1);
+                }
+            }
             MothConfiguration config;
             config = new MothConfiguration(configFile);
             HashMap<String, Object> defaults = new HashMap<String, Object>();