Add legal notice for the CampaignEvents extension

Bug: T309332
Change-Id: I1136bd03eb626496b252af673b552797778bdaa6

.phan/config.php

@@ -5,6 +5,7 @@ $cfg = require __DIR__ . '/../vendor/mediawiki/mediawiki-phan-config/src/config.
 $cfg['directory_list'] = array_merge(
 	$cfg['directory_list'],
 	[
+		'../../extensions/CampaignEvents',
 		'../../extensions/GuidedTour',
 		'../../extensions/ORES',
 		'../../skins/MinervaNeue',
@@ -14,6 +15,7 @@ $cfg['directory_list'] = array_merge(
 $cfg['exclude_analysis_directory_list'] = array_merge(
 	$cfg['exclude_analysis_directory_list'],
 	[
+		'../../extensions/CampaignEvents',
 		'../../extensions/GuidedTour',
 		'../../extensions/ORES',
 		'../../skins/MinervaNeue',

extension.json

@@ -66,6 +66,9 @@
 				"MainConfig",
 				"UserOptionsManager"
 			]
+		},
+		"WikimediaMessagesCampaignEventsHooks": {
+			"class": "MediaWiki\\Extension\\WikimediaMessages\\WikimediaMessagesCampaignEventsHooks"
 		}
 	},
 	"Hooks": {
@@ -108,7 +111,10 @@
 		"SpecialContributionsBeforeMainOutput": {
 			"handler": "WikimediaMessagesHooks"
 		},
-		"CheckUserSubtitleLinks": "MediaWiki\\Extension\\WikimediaMessages\\Hooks::onCheckUserSubtitleLinks"
+		"CheckUserSubtitleLinks": "MediaWiki\\Extension\\WikimediaMessages\\Hooks::onCheckUserSubtitleLinks",
+		"CampaignEventsGetPolicyMessage": {
+			"handler": "WikimediaMessagesCampaignEventsHooks"
+		}
 	},
 	"DefaultUserOptions": {
 		"rcenhancedfilters-seen-highlight-button-counter": 0

i18n/wikimedia/en.json

@@ -383,6 +383,7 @@
 	"gadget-curidlink-link-by-id": "Link by ID",
 	"gadget-curidlink-link-by-id-desc": "Show link to this page by its ID",
 	"gadget-souspages-subpages": "Subpages",
+	"ext-campaignevents-register-policy": "By registering, you agree to the [https://foundation.wikimedia.org/wiki/Terms_of_Use Terms of Use] and [https://foundation.wikimedia.org/wiki/Privacy_policy Privacy Policy].",
 	"ext-quicksurveys-similareditors-survey-privacy-policy": "For more information, see this survey's [https://foundation.wikimedia.org/wiki/Legal:SimilarEditors_QuickSurvey_Privacy_Statement privacy statement].",
 	"research-incentive-message": "Would you like to participate in remunerated user research for Wikipedia?",
 	"research-incentive-description": "Complete the form to be registered into our participant list. You will be contacted periodically with remunerated research opportunities. You may remove yourself from the list at any time.",

i18n/wikimedia/qqq.json

@@ -428,6 +428,7 @@
 	"gadget-curidlink-link-by-id": "Text of sidebar link added via [[:meta:MediaWiki:Gadget-CurIDLink.js|CurIDLink]] gadget",
 	"gadget-curidlink-link-by-id-desc": "Text of sidebar tooltip added via [[:meta:MediaWiki:Gadget-CurIDLink.js|CurIDLink]] gadget",
 	"gadget-souspages-subpages": "Text of sidebar link added via [[:meta:MediaWiki:Gadget-SousPages.js|SousPages]] gadget\n\n{{Identical|Subpage}}",
+	"ext-campaignevents-register-policy": "Legal disclaimer shown when a user tries to register for an event.",
 	"ext-quicksurveys-similareditors-survey-privacy-policy": "Legal disclaimer in the feedback survey on [[Special:SimilarEditors]]",
 	"research-incentive-message": "{{Optional}}\n\n'''At the moment, this is an experiment that is intended only to Japanese-language users.'''\n\nResearch Incentive survey question.",
 	"research-incentive-description": "{{Optional}}\n\n'''At the moment, this is an experiment that is intended only to Japanese-language users.'''\n\nResearch Incentive survey description.",

includes/WikimediaMessagesCampaignEventsHooks.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace MediaWiki\Extension\WikimediaMessages;
+
+use MediaWiki\Extension\CampaignEvents\Hooks\CampaignEventsGetPolicyMessageHook;
+
+class WikimediaMessagesCampaignEventsHooks implements CampaignEventsGetPolicyMessageHook {
+
+	/**
+	 * @inheritDoc
+	 */
+	public function onCampaignEventsGetPolicyMessage( ?string &$message ) {
+		$message = 'ext-campaignevents-register-policy';
+	}
+}