Initial importv0.1.0

1 files changed, 105 insertions, 0 deletions

diff --git a/includes/class-cepis-woo-options.php b/includes/class-cepis-woo-options.php
new file mode 100644
index 0000000..7a4a0b0
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+++ b/includes/class-cepis-woo-options.php
@@ -0,0 +1,105 @@
+<?php
+/**
+ * Stored settings and their defaults.
+ *
+ * @package CepisWooCommerce
+ */
+
+declare(strict_types=1);
+
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Reads the plugin's options, normalising whatever is in the database into the
+ * small set of values the rest of the plugin is allowed to see.
+ *
+ * Every getter returns a value from a fixed set: an option edited by hand in
+ * the database, or left over from an older release, can never reach the
+ * browser or the HTTP client as-is.
+ */
+final class Cepis_Woo_Options {
+
+	/**
+	 * Option names, so that the settings screen and `uninstall.php` cannot
+	 * drift apart.
+	 */
+	public const NAMES = array(
+		'cepis_woo_enabled',
+		'cepis_woo_mode',
+		'cepis_woo_overwrite',
+		'cepis_woo_focus_number',
+		'cepis_woo_base_url',
+	);
+
+	/**
+	 * The public API, and the default for the `base_url` setting.
+	 */
+	public const DEFAULT_BASE_URL = 'https://cep.is';
+
+	/**
+	 * Whether the autofill should run at all.
+	 */
+	public static function enabled(): bool {
+		return 'yes' === get_option( 'cepis_woo_enabled', 'yes' );
+	}
+
+	/**
+	 * Where the browser sends its lookups.
+	 *
+	 * `direct` has the browser call cep.is itself: one cross-origin GET against
+	 * an edge cache, with no PHP in the path. `proxy` routes the lookup through
+	 * this site's REST API instead, for stores whose Content-Security-Policy
+	 * forbids external XHR or whose owner wants the server-side cache.
+	 *
+	 * @return string Either `direct` or `proxy`.
+	 */
+	public static function mode(): string {
+		return 'proxy' === get_option( 'cepis_woo_mode', 'direct' ) ? 'proxy' : 'direct';
+	}
+
+	/**
+	 * What to do with a checkout field that already holds a value.
+	 *
+	 * @return bool|string `"auto"`, `true` or `false`, in the shape the widget
+	 *     expects for its own `overwrite` option.
+	 */
+	public static function overwrite(): bool|string {
+		$value = (string) get_option( 'cepis_woo_overwrite', 'auto' );
+
+		if ( 'always' === $value ) {
+			return true;
+		}
+		if ( 'never' === $value ) {
+			return false;
+		}
+
+		return 'auto';
+	}
+
+	/**
+	 * Whether to move the cursor to the house-number field after a hit.
+	 *
+	 * Only ever does anything on the classic checkout, and only when a
+	 * house-number field exists.
+	 */
+	public static function focus_number(): bool {
+		return 'yes' === get_option( 'cepis_woo_focus_number', 'yes' );
+	}
+
+	/**
+	 * Root of the API to query, without a trailing slash.
+	 *
+	 * Overridable so a store can point at its own instance, and so the test
+	 * suite can point at a fake one.
+	 */
+	public static function base_url(): string {
+		$value = (string) get_option( 'cepis_woo_base_url', self::DEFAULT_BASE_URL );
+		$value = untrailingslashit( trim( $value ) );
+
+		if ( '' === $value || ! preg_match( '#^https?://#i', $value ) ) {
+			return self::DEFAULT_BASE_URL;
+		}
+
+		return $value;
+	}
+}