LICENSE, clean uninstall (opt-in data removal), privacy policy text, Update URI header

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

LICENSE

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

README.md

@@ -106,3 +106,12 @@ vendor/bin/phpunit
 ```
 Architecture notes are in `docs/ARCHITECTURE.md`. Every push to `main` runs the tests and, if they pass,
 publishes a versioned zip release via Gitea Actions.
+
+## License
+StreamGoals Donate is free software, released under the GNU General Public License, version 2 or (at your option)
+any later version (GPL-2.0-or-later). See the `LICENSE` file for the full text.
+
+## Uninstalling
+Deleting the plugin from the Plugins screen always removes its scheduled task and cached data. Your donations, goals,
+rules, rewards, alerts, tiers and settings are kept unless you first tick "Delete all data when the plugin is deleted"
+in StreamGoals > Settings > Advanced (off by default; deleting cannot be undone).

includes/Admin/SettingsPage.php

@@ -59,7 +59,9 @@ final class SettingsPage {
 		}
 		echo '</select><p class="description">Donation forms limit how fast one visitor can start payments (to stop abuse). Behind a proxy, every visitor can look like the same address, and a busy moment, like a raid, could block donations. <strong>Automatic</strong> recognises Cloudflare by its published addresses and counts each visitor separately; it ignores forged headers from anywhere else. For another kind of proxy, choose its option here, but only if <em>all</em> traffic to your site really goes through it.</p>';
 		self::ipDiagnostics( (string) $s['visitor_ip_header'] );
-		echo '</td></tr></table></div>';
+		echo '</td></tr>';
+		echo '<tr><th scope="row">Uninstall</th><td><label><input type="checkbox" name="delete_data_on_uninstall" value="1"' . checked( ! empty( $s['delete_data_on_uninstall'] ), true, false ) . '> Delete all data when the plugin is deleted</label>';
+		echo '<p class="description"><strong>When you delete the plugin from the Plugins screen, also delete ALL donations, goals, rules, rewards, alerts, tiers and settings. This cannot be undone. Leave off to keep your data if you reinstall later.</strong></p></td></tr></table></div>';
 
 		$rel = \StreamGoals\Update\Updater::latest();
 		echo '<div class="sg-card"><h2>Plugin updates</h2><table class="form-table" role="presentation">';
@@ -148,6 +150,7 @@ final class SettingsPage {
 		}
 		$upd['funding_card']          = ! empty( $post['funding_card'] );
 		$upd['funding_paylater']      = ! empty( $post['funding_paylater'] );
+		$upd['delete_data_on_uninstall'] = ! empty( $post['delete_data_on_uninstall'] );
 		$upd['donation_notice']       = Input::text( $post['donation_notice'] ?? '', 200 );
 		$upd['moderate_messages']     = ! empty( $post['moderate_messages'] );
 		$upd['profanity_filter']      = ! empty( $post['profanity_filter'] );

includes/Core/Plugin.php

@@ -20,6 +20,7 @@ final class Plugin {
 	public static function boot(): void {
 		Installer::maybe_upgrade();
 		Maintenance::register();
+		Privacy::register();
 		foreach ( self::MODULES as $module ) {
 			if ( class_exists( $module ) && method_exists( $module, 'register' ) ) {
 				$module::register();

includes/Core/Privacy.php

@@ -0,0 +1,47 @@
+<?php
+declare( strict_types=1 );
+
+namespace StreamGoals\Core;
+
+/** Suggested privacy-policy text (Settings > Privacy > Policy Guide). Describes only what the code actually does. */
+final class Privacy {
+
+	public const DOMAIN = 'streamgoals-donate';
+
+	public static function register(): void {
+		add_action( 'admin_init', array( self::class, 'add_policy_content' ) );
+	}
+
+	public static function add_policy_content(): void {
+		if ( ! function_exists( 'wp_add_privacy_policy_content' ) ) {
+			return;
+		}
+		wp_add_privacy_policy_content( 'StreamGoals Donate', self::content() );
+	}
+
+	/** @param callable|null $t Translator taking one string (defaults to WordPress' __ with this text domain). */
+	public static function content( ?callable $t = null ): string {
+		$t ??= static fn( string $s ): string => __( $s, self::DOMAIN ); // phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralText
+
+		$html  = '<div class="wp-suggested-text">';
+		$html .= '<p class="privacy-policy-tutorial">' . $t( 'Suggested text for your privacy policy. Review it and adjust it to how you use the plugin, and to the laws that apply to you.' ) . '</p>';
+		$html .= '<strong class="privacy-policy-tutorial">' . $t( 'Suggested text:' ) . '</strong> ';
+
+		$html .= '<h2>' . $t( 'Donations' ) . '</h2>';
+		$html .= '<p>' . $t( 'When you make a donation on this site, we store the amount, the currency, the date and time, the PayPal order and capture identifiers, and the display name you entered, unless you chose to donate anonymously. The name of an anonymous donor is never stored. If you write a message with your donation, we store that message too, so please do not put personal details in it.' ) . '</p>';
+		$html .= '<p>' . $t( 'We do not store your email address, postal address or payment card details. Payments are processed by PayPal, which collects and handles those details under its own privacy statement:' ) . ' <a href="https://www.paypal.com/webapps/mpp/ua/privacy-full" target="_blank" rel="noopener noreferrer">https://www.paypal.com/webapps/mpp/ua/privacy-full</a></p>';
+		$html .= '<p>' . $t( 'The donation form loads PayPal\'s payment script from paypal.com, so PayPal receives your IP address and browser information when the form is shown.' ) . '</p>';
+
+		$html .= '<h2>' . $t( 'How long we keep data' ) . '</h2>';
+		$html .= '<p>' . $t( 'Donation records are kept until the site owner deletes them. The site owner can export them as a CSV file. Checkouts that were started but never paid are removed automatically after a week.' ) . '</p>';
+
+		$html .= '<h2>' . $t( 'Abuse protection' ) . '</h2>';
+		$html .= '<p>' . $t( 'To stop abuse, the number of donation requests from one visitor is limited. For this, a one-way hash of the visitor\'s IP address is used as the name of a temporary cache entry (a WordPress transient) that expires after a few minutes. The IP address itself is not written to the donation records. Expired entries can remain in the database until WordPress cleans them up, and on sites with a persistent object cache they are kept in that cache instead.' ) . '</p>';
+
+		$html .= '<h2>' . $t( 'Stream overlays' ) . '</h2>';
+		$html .= '<p>' . $t( 'The overlay pages shown in broadcasting software load no third-party scripts, fonts or services. They show donor display names and messages (not the names of anonymous donors) and any images or sounds the site owner chose from the Media Library.' ) . '</p>';
+		$html .= '</div>';
+
+		return $html;
+	}
+}

includes/Core/Settings.php

@@ -40,6 +40,7 @@ final class Settings {
 			'funding_paylater'     => false,     // show PayPal "Pay Later" button
 			'update_token'         => '',        // optional Gitea read token (only while the update repo is private)
 			'funding_card'         => true,      // show the Debit/Credit Card button
+			'delete_data_on_uninstall' => false, // when the plugin is deleted, also drop all tables/options (see Core\Uninstaller)
 		);
 	}
 

includes/Core/Uninstaller.php

@@ -0,0 +1,110 @@
+<?php
+declare( strict_types=1 );
+
+namespace StreamGoals\Core;
+
+/**
+ * Removes what the plugin created. Dependency-free on purpose: uninstall.php loads this single file with
+ * require_once, without the plugin's autoloader or constants.
+ *
+ * Always removed on uninstall: the cron event and all transients (they are only caches/notices).
+ * Removed ONLY when the owner ticked "delete data on uninstall": every sg_ table and option.
+ *
+ * Keep the lists below in sync with Installer (tables) and every add/update_option call; UninstallerTest fails
+ * when something is missing.
+ */
+final class Uninstaller {
+
+	public const CRON_HOOK = 'sg_purge_abandoned';
+
+	/** @return string[] Table names without the WordPress prefix. */
+	public static function tables(): array {
+		return array(
+			'sg_goals',
+			'sg_donations',
+			'sg_rules',
+			'sg_rule_events',
+			'sg_state',
+			'sg_actions',
+			'sg_action_events',
+			'sg_alert_defs',
+			'sg_goal_tiers',
+		);
+	}
+
+	/** @return string[] Option names (per site). */
+	public static function options(): array {
+		return array(
+			'sg_settings',
+			'sg_db_version',
+			'sg_overlay_epoch',
+			'sg_overlay_rules_version',
+			'sg_currency',
+			'sg_paypal_verified',
+			'sg_donate_page_id',
+			'sg_wizard_goal_id',
+		);
+	}
+
+	/** @return string[] Fixed-name site transients. */
+	public static function site_transients(): array {
+		return array( 'sg_update_release' );
+	}
+
+	/** @return string[] Prefixes of transients whose names carry a suffix (rate limiter hashes, per-user notices). */
+	public static function transient_prefixes(): array {
+		return array( 'sg_rl_', 'sg_notice_' );
+	}
+
+	/** Whether this site's saved settings ask for all data to be deleted. */
+	public static function wants_data_deleted( mixed $settings ): bool {
+		return is_array( $settings ) && ! empty( $settings['delete_data_on_uninstall'] );
+	}
+
+	/** Drops every plugin table for the current site prefix. @param object $wpdb wpdb-like (prefix, query). */
+	public static function drop_tables( object $wpdb ): void {
+		foreach ( self::tables() as $t ) {
+			$wpdb->query( 'DROP TABLE IF EXISTS `' . $wpdb->prefix . $t . '`' ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+		}
+	}
+
+	/** Deletes the dynamically named transients (and their timeouts) straight from the options table. @param object $wpdb wpdb-like (options, esc_like, prepare, query). */
+	public static function delete_dynamic_transients( object $wpdb ): void {
+		foreach ( self::transient_prefixes() as $prefix ) {
+			foreach ( array( '_transient_', '_transient_timeout_' ) as $kind ) {
+				$like = $wpdb->esc_like( $kind . $prefix ) . '%';
+				$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s", $like ) ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+			}
+		}
+	}
+
+	/** Uninstall for the current site (call inside switch_to_blog on multisite). */
+	public static function run_site( object $wpdb ): void {
+		$delete = self::wants_data_deleted( get_option( 'sg_settings', array() ) );
+		wp_clear_scheduled_hook( self::CRON_HOOK );
+		self::delete_dynamic_transients( $wpdb );
+		if ( $delete ) {
+			self::drop_tables( $wpdb );
+			foreach ( self::options() as $o ) {
+				delete_option( $o );
+			}
+		}
+	}
+
+	/** Entry point for uninstall.php. */
+	public static function run(): void {
+		global $wpdb;
+		if ( function_exists( 'is_multisite' ) && is_multisite() ) {
+			foreach ( get_sites( array( 'fields' => 'ids', 'number' => 0 ) ) as $id ) {
+				switch_to_blog( (int) $id );
+				self::run_site( $wpdb );
+				restore_current_blog();
+			}
+		} else {
+			self::run_site( $wpdb );
+		}
+		foreach ( self::site_transients() as $t ) {
+			delete_site_transient( $t );
+		}
+	}
+}

streamgoals-donate.php

@@ -6,7 +6,10 @@
  * Requires at least: 6.8
  * Requires PHP: 8.1
  * License: GPL-2.0-or-later
+ * License URI: https://www.gnu.org/licenses/gpl-2.0.html
+ * Update URI: https://repo.anhonesthost.net/wp-plugins/wp-donations
  * Text Domain: streamgoals-donate
+ * Domain Path: /languages
  */
 
 defined( 'ABSPATH' ) || exit;

tests/Unit/PrivacyTest.php

@@ -0,0 +1,29 @@
+<?php
+declare( strict_types=1 );
+
+namespace StreamGoals\Tests\Unit;
+
+use PHPUnit\Framework\TestCase;
+use StreamGoals\Core\Privacy;
+
+final class PrivacyTest extends TestCase {
+
+	public function test_text_covers_the_required_disclosures(): void {
+		$t = Privacy::content( static fn( string $s ): string => $s );
+		$this->assertStringContainsString( 'Suggested text:', $t );
+		$this->assertStringContainsString( 'PayPal', $t );
+		$this->assertStringContainsString( 'paypal.com/webapps/mpp/ua/privacy-full', $t );
+		$this->assertStringContainsString( 'anonymous', $t );
+		$this->assertStringContainsString( 'never stored', $t );
+		$this->assertStringContainsString( 'IP address', $t );
+		$this->assertStringContainsString( 'CSV', $t );
+		$this->assertStringContainsString( 'overlay', $t );
+		$this->assertStringContainsString( 'do not store your email address', $t );
+	}
+
+	public function test_translator_is_applied_to_every_sentence(): void {
+		$t = Privacy::content( static fn( string $s ): string => '[' . $s . ']' );
+		$this->assertStringContainsString( '[Suggested text:]', $t );
+		$this->assertStringContainsString( '[Donations]', $t );
+	}
+}

tests/Unit/UninstallerTest.php

@@ -0,0 +1,113 @@
+<?php
+declare( strict_types=1 );
+
+namespace StreamGoals\Tests\Unit;
+
+use PHPUnit\Framework\TestCase;
+use StreamGoals\Core\Maintenance;
+use StreamGoals\Core\Settings;
+use StreamGoals\Core\Uninstaller;
+
+/** Guards the uninstall lists so a newly added table/option/transient/cron cannot be forgotten. */
+final class UninstallerTest extends TestCase {
+
+	private const ROOT = __DIR__ . '/../../';
+
+	/** @return string[] contents of every PHP file under includes/ plus the main file, keyed by path */
+	private function sources(): array {
+		$out = array( 'streamgoals-donate.php' => (string) file_get_contents( self::ROOT . 'streamgoals-donate.php' ) );
+		$it  = new \RecursiveIteratorIterator( new \RecursiveDirectoryIterator( self::ROOT . 'includes', \FilesystemIterator::SKIP_DOTS ) );
+		foreach ( $it as $f ) {
+			if ( 'php' === $f->getExtension() && 'Uninstaller.php' !== $f->getFilename() ) {
+				$out[ $f->getPathname() ] = (string) file_get_contents( $f->getPathname() );
+			}
+		}
+		return $out;
+	}
+
+	public function test_every_installer_table_is_dropped(): void {
+		$src = (string) file_get_contents( self::ROOT . 'includes/Core/Installer.php' );
+		preg_match_all( '/CREATE TABLE \{\$p\}(\w+)/', $src, $m );
+		$this->assertNotEmpty( $m[1] );
+		$created = array_map( static fn( $t ) => 'sg_' . $t, $m[1] );
+		$this->assertSame( array(), array_diff( $created, Uninstaller::tables() ), 'table created by Installer but not dropped on uninstall' );
+		$this->assertSame( array(), array_diff( Uninstaller::tables(), $created ), 'uninstall drops a table Installer does not create' );
+	}
+
+	public function test_every_option_used_in_code_is_deleted(): void {
+		$found = array();
+		foreach ( $this->sources() as $src ) {
+			preg_match_all( "/(?:add|update|delete)_option\(\s*'(sg_\w+)'/", $src, $a );
+			preg_match_all( "/const\s+(?:OPTION|VERIFIED)\s*=\s*'(sg_\w+)'/", $src, $b );
+			$found = array_merge( $found, $a[1], $b[1] );
+		}
+		$found = array_unique( $found );
+		$this->assertContains( 'sg_settings', $found, 'scan sanity check' );
+		$this->assertContains( 'sg_overlay_epoch', $found );
+		$this->assertContains( 'sg_paypal_verified', $found );
+		$this->assertSame( array(), array_values( array_diff( $found, Uninstaller::options() ) ), 'option written by the plugin but not removed on uninstall' );
+	}
+
+	public function test_every_transient_and_cron_hook_is_cleaned(): void {
+		$fixed = array();
+		$dyn   = array();
+		foreach ( $this->sources() as $src ) {
+			preg_match_all( "/(?:CACHE_KEY\s*=\s*|(?:set|get|delete)_site_transient\(\s*)'(sg_\w+)'/", $src, $a );
+			$fixed = array_merge( $fixed, $a[1] );
+			preg_match_all( "/(?:set|get|delete)_transient\(\s*'(sg_\w+?_)'\s*\./", $src, $b );
+			$dyn = array_merge( $dyn, $b[1] );
+			preg_match_all( "/'(sg_rl_)'\s*\./", $src, $c );
+			$dyn = array_merge( $dyn, $c[1] );
+		}
+		$this->assertContains( 'sg_update_release', $fixed, 'scan sanity check' );
+		$this->assertSame( array(), array_values( array_diff( array_unique( $fixed ), Uninstaller::site_transients() ) ) );
+		$this->assertSame( array(), array_values( array_diff( array_unique( $dyn ), Uninstaller::transient_prefixes() ) ) );
+		$this->assertContains( 'sg_rl_', Uninstaller::transient_prefixes() );
+		$this->assertContains( 'sg_notice_', Uninstaller::transient_prefixes() );
+		$this->assertSame( Maintenance::HOOK, Uninstaller::CRON_HOOK );
+	}
+
+	public function test_deactivation_unschedules_the_cron_event(): void {
+		$main = (string) file_get_contents( self::ROOT . 'streamgoals-donate.php' );
+		$this->assertMatchesRegularExpression( '/register_deactivation_hook\([^;]*Maintenance::class,\s*\'unschedule\'/', $main );
+	}
+
+	public function test_uninstall_is_opt_in_and_off_by_default(): void {
+		$this->assertFalse( Settings::defaults()['delete_data_on_uninstall'] );
+		$this->assertFalse( Uninstaller::wants_data_deleted( false ) );
+		$this->assertFalse( Uninstaller::wants_data_deleted( array() ) );
+		$this->assertFalse( Uninstaller::wants_data_deleted( array( 'delete_data_on_uninstall' => false ) ) );
+		$this->assertTrue( Uninstaller::wants_data_deleted( array( 'delete_data_on_uninstall' => true ) ) );
+	}
+
+	private function fakeDb(): object {
+		return new class() {
+			public string $prefix  = 'wp7_';
+			public string $options = 'wp7_options';
+			public array $queries  = array();
+			public function query( string $q ): int { $this->queries[] = $q; return 0; }
+			public function esc_like( string $s ): string { return addcslashes( $s, '_%\\' ); }
+			public function prepare( string $q, ...$a ): string { return str_replace( '%s', "'" . $a[0] . "'", $q ); }
+		};
+	}
+
+	public function test_drop_tables_issues_one_drop_per_table_with_prefix(): void {
+		$db = $this->fakeDb();
+		Uninstaller::drop_tables( $db );
+		$this->assertCount( count( Uninstaller::tables() ), $db->queries );
+		$this->assertContains( 'DROP TABLE IF EXISTS `wp7_sg_donations`', $db->queries );
+		foreach ( $db->queries as $q ) {
+			$this->assertMatchesRegularExpression( '/^DROP TABLE IF EXISTS `wp7_sg_\w+`$/', $q );
+		}
+	}
+
+	public function test_dynamic_transient_cleanup_only_targets_plugin_prefixes(): void {
+		$db = $this->fakeDb();
+		Uninstaller::delete_dynamic_transients( $db );
+		$this->assertCount( 4, $db->queries );
+		foreach ( $db->queries as $q ) {
+			$this->assertStringStartsWith( 'DELETE FROM wp7_options WHERE option_name LIKE', $q );
+			$this->assertMatchesRegularExpression( '/_transient_(timeout_)?sg_(rl|notice)_%/', str_replace( '\\', '', $q ) );
+		}
+	}
+}

uninstall.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * Runs when the plugin is deleted from the Plugins screen.
+ *
+ * Always removes the scheduled event and cached transients. Deletes donations, goals and settings only if the
+ * owner enabled "delete data on uninstall" in StreamGoals > Settings > Advanced.
+ */
+
+defined( 'WP_UNINSTALL_PLUGIN' ) || exit;
+
+require_once __DIR__ . '/includes/Core/Uninstaller.php';
+
+\StreamGoals\Core\Uninstaller::run();