Added code to import lotw-useractivity.csv for displaying if users on lotw

The csv can be imported by using /index.php/lotw/load_users need to impliment frontend next

application/config/migration.php

@@ -21,7 +21,7 @@ $config['migration_enabled'] = TRUE;
 | be upgraded / downgraded to.
 |
 */
-$config['migration_version'] = 15;
+$config['migration_version'] = 16;
 
 /*
 |--------------------------------------------------------------------------

application/controllers/Lotw.php

@@ -294,4 +294,38 @@ class Lotw extends CI_Controller {
 		}
 	}
 
+	/*
+		Load the ARRL LOTW User Activity CSV into LOTW User Table for cross checking when logging
+	*/
+	function load_users() {
+		set_time_limit(0);
+		$this->load->model('lotw_user');
+
+		$row = 1;
+		if (($handle = fopen("https://lotw.arrl.org/lotw-user-activity.csv", "r")) !== FALSE) {
+		    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
+		        $num = count($data);
+		        $row++;
+
+		        if(isset($data[2])) {
+		        	$callsign = $data[0];
+		        	$upload_date = $data[1]." ".$data[2];
+		        	$this->lotw_user->add_lotwuser($callsign, $upload_date);
+		    	}
+
+		    }
+		    fclose($handle);
+		}
+
+	}
+
+	/*
+		Check if callsign is an active LOTW user and return whether its true or not
+	*/
+	function lotw_usercheck($callsign) {
+		$this->load->model('lotw_user');
+
+
+	}
+
 } // end class

application/migrations/016_lotwusers.php

@@ -0,0 +1,33 @@
+<?php
+
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+class Migration_lotwusers extends CI_Migration {
+
+        public function up()
+        {
+                $this->dbforge->add_field(array(
+                        'id' => array(
+                                'type' => 'INT',
+                                'constraint' => 5,
+                                'unsigned' => TRUE,
+                                'auto_increment' => TRUE
+                        ),
+                        'callsign' => array(
+                                'type' => 'VARCHAR',
+                                'constraint' => '100',
+                        ),
+                        'upload_date' => array(
+                                'type' => 'datetime',
+                                'null' => TRUE,
+                        ),
+                ));
+                $this->dbforge->add_key('id', TRUE);
+                $this->dbforge->create_table('lotw_userlist');
+        }
+
+        public function down()
+        {
+                $this->dbforge->drop_table('lotw_userlist');
+        }
+}

application/models/Lotw_user.php

@@ -0,0 +1,28 @@
+<?php
+
+class Lotw_user extends CI_Model {
+
+	function __construct()
+	{
+		// Call the Model constructor
+		parent::__construct();
+	}
+
+	
+	function empty_table($table) {
+		$this->db->empty_table($table); 
+	}
+
+	function add_lotwuser($callsign, $date) {
+
+		$data = array(
+		        'callsign' => $callsign,
+		        'upload_date' => $date
+		);
+
+
+
+		$this->db->insert('lotw_userlist', $data);
+	}
+}
+?>