Add theme for color impaired hams (based on default) (#2497)

application/migrations/265_add_color_impaired_theme.php

@@ -0,0 +1,37 @@
+<?php
+
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+/*
+*   This migration adds a theme for color impaired hams (based on default skin)
+*/
+
+class Migration_add_color_impaired_theme extends CI_Migration {
+
+    public function up()
+    {
+        if ($this->entrycheck() == 0) { 
+            $this->dbtry("INSERT INTO `themes` SET name = 'Color Impaired Support', foldername = 'color_impaired', header_logo = 'wavelog_icon_only_default', main_logo = 'wavelog_logo_default', theme_mode = 'light';");
+        }
+    }
+
+    public function down()
+    {
+        if ($this->entrycheck() > 0) { 
+            $this->dbtry("DELETE FROM themes WHERE name = 'Color Impaired Support';");
+            $this->dbtry("UPDATE `users` SET user_stylesheet = 'default' WHERE user_stylesheet = 'color_impaired';");
+        }
+    }
+
+    function dbtry($what) {
+        try {
+            $this->db->query($what);
+        } catch (Exception $e) {
+            log_message("error", "Something gone wrong while altering the themes table: ".$e." // Executing: ".$this->db->last_query());
+        }
+    }
+
+    function entrycheck() {
+       return $this->db->query("SELECT * FROM themes WHERE name = 'Color Impaired Support';")->num_rows();
+    }
+}