add class to update customizer fields from old versions

inc/customizer-update-fields.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ *
+ *
+ * @package   ColetivoWP_Update_Customizer
+ * @author    Matheus Gimenez <contato@matheusgimenez.com.br>
+ * @license   GPL-2.0+
+ * @copyright 2017 Matheus Gimenez
+ *
+ * @wordpress-plugin
+ * Description:       ColetivoWP_Update_Customizer
+ * Version:           0.1
+ * Author:            Matheus Gimenez
+ * Text Domain:       custom-roles
+ * License:           GPL-2.0+
+ * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
+ * Domain Path:       /languages
+ */
+
+// If this file is called directly, abort.
+if ( ! defined( 'ABSPATH' ) ) exit;
+
+class ColetivoWP_Update_Customizer {
+	/**
+	/**
+	 * Init Plugin class
+	 */
+	public function __construct() {
+		add_action( 'admin_init', array( $this, 'update_theme_mod') );
+	}
+	/**
+	 * Change "onepress" to "coletivo" in customizer fields
+	 * @return type
+	 */
+	public function update_theme_mod() {
+		if ( 'true' === get_option( 'tema_coletivo_updated_customizer', false ) ) {
+			return;
+		}
+		$customizer_fields = get_option( 'theme_mods_tema-coletivo');
+		foreach ( $customizer_fields as $key => $value ) {
+			if ( false === strpos( $key, 'onepress' ) ) {
+				continue;
+			} 
+			$new_key = str_replace( 'onepress', 'coletivo', $key );
+			$customizer_fields[ $new_key ] = $value;
+			unset( $customizer_fields[ $key ] );
+		}
+		update_option( 'theme_mods_tema-coletivo', $customizer_fields );
+		update_option( 'tema_coletivo_updated_customizer', 'true' );
+	}
+}
+new ColetivoWP_Update_Customizer();