installed plugin Easy Digital Downloads version 3.1.0.3

wp-content/plugins/easy-digital-downloads/includes/admin/upgrades/v3/class-tax-rates.php

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+<?php
+/**
+ * 3.0 Data Migration - Tax Rates.
+ *
+ * @subpackage  Admin/Upgrades/v3
+ * @copyright   Copyright (c) 2018, Easy Digital Downloads, LLC
+ * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License
+ * @since       3.0
+ */
+namespace EDD\Admin\Upgrades\v3;
+
+// Exit if accessed directly
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Tax_Rates Class.
+ *
+ * @since 3.0
+ */
+class Tax_Rates extends Base {
+
+	/**
+	 * Constructor.
+	 *
+	 * @param int $step Step.
+	 */
+	public function __construct( $step = 1 ) {
+		parent::__construct( $step );
+
+		$this->completed_message = __( 'Tax rates migration completed successfully.', 'easy-digital-downloads' );
+		$this->upgrade           = 'migrate_tax_rates';
+	}
+
+	/**
+	 * Retrieve the data pertaining to the current step and migrate as necessary.
+	 *
+	 * @since 3.0
+	 *
+	 * @return bool True if data was migrated, false otherwise.
+	 */
+	public function get_data() {
+		$offset = ( $this->step - 1 ) * $this->per_step;
+
+		if ( 1 === $this->step ) {
+			$default_tax_rate = edd_get_option( 'tax_rate', false );
+			if ( ! empty( $default_tax_rate ) ) {
+				edd_add_tax_rate(
+					array(
+						'scope'  => 'global',
+						'amount' => floatval( $default_tax_rate ),
+					)
+				);
+			}
+		}
+
+		$results = get_option( 'edd_tax_rates', array() );
+		$results = array_slice( $results, $offset, $this->per_step, true );
+
+		if ( ! empty( $results ) ) {
+			foreach ( $results as $result ) {
+				Data_Migrator::tax_rates( $result );
+			}
+
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Calculate the percentage completed.
+	 *
+	 * @since 3.0
+	 *
+	 * @return float Percentage.
+	 */
+	public function get_percentage_complete() {
+		$total = count( get_option( 'edd_tax_rates', array() ) );
+
+		if ( empty( $total ) ) {
+			$total = 0;
+		}
+
+		$percentage = 100;
+
+		if ( $total > 0 ) {
+			$percentage = ( ( $this->per_step * $this->step ) / $total ) * 100;
+		}
+
+		if ( $percentage > 100 ) {
+			$percentage = 100;
+		}
+
+		return $percentage;
+	}
+}