Implement factcheck edition.

Telegram/Resources/langs/lang.strings

@@ -3217,6 +3217,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_context_reply_msg" = "Reply";
 "lng_context_quote_and_reply" = "Quote & Reply";
 "lng_context_edit_msg" = "Edit";
+"lng_context_add_factcheck" = "Add Fact Check";
+"lng_context_edit_factcheck" = "Edit Fact Check";
 "lng_context_forward_msg" = "Forward Message";
 "lng_context_send_now_msg" = "Send now";
 "lng_context_reschedule" = "Reschedule";
@@ -3287,12 +3289,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 "lng_context_spoiler_effect" = "Hide with Spoiler";
 "lng_context_disable_spoiler" = "Remove Spoiler";
-"lng_context_add_factcheck" = "Add Fact Check";
 
 "lng_factcheck_title" = "Fact Check";
 "lng_factcheck_placeholder" = "Add Facts or Context";
 "lng_factcheck_whats_this" = "what's this?";
 "lng_factcheck_about" = "This clarification was provided by a fact checking agency assigned by the department of the government of your country ({country}) responsible for combatting misinformation.";
+"lng_factcheck_add_done" = "Fact check added.";
+"lng_factcheck_edit_done" = "Fact check edited.";
+"lng_factcheck_remove_done" = "Fact check removed.";
 
 "lng_translate_show_original" = "Show Original";
 "lng_translate_bar_to" = "Translate to {name}";

Telegram/SourceFiles/data/components/factchecks.cpp

@@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "data/components/factchecks.h"
 
+#include "api/api_text_entities.h"
 #include "apiwrap.h"
 #include "base/random.h"
 #include "data/data_session.h"
@@ -17,6 +18,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history_item.h"
 #include "history/history_item_components.h"
 #include "lang/lang_keys.h"
+#include "main/main_app_config.h"
 #include "main/main_session.h"
 
 namespace Data {
@@ -135,4 +137,63 @@ std::unique_ptr<HistoryView::WebPage> Factchecks::makeMedia(
 		MediaWebPageFlags());
 }
 
+bool Factchecks::canEdit(not_null<HistoryItem*> item) const {
+	if (!canEdit()
+		|| !item->isRegular()
+		|| !item->history()->peer->isBroadcast()) {
+		return false;
+	}
+	const auto media = item->media();
+	if (!media || media->webpage() || media->photo()) {
+		return true;
+	} else if (const auto document = media->document()) {
+		return !document->isVideoMessage() && !document->sticker();
+	}
+	return false;
+}
+
+bool Factchecks::canEdit() const {
+	return _session->appConfig().get<bool>(u"can_edit_factcheck"_q, false);
+}
+
+int Factchecks::lengthLimit() const {
+	return _session->appConfig().get<int>(u"factcheck_length_limit"_q, 1024);
+}
+
+void Factchecks::save(
+		FullMsgId itemId,
+		TextWithEntities text,
+		Fn<void(QString)> done) {
+	const auto item = _session->data().message(itemId);
+	if (!item) {
+		return;
+	} else if (text.empty()) {
+		_session->api().request(MTPmessages_DeleteFactCheck(
+			item->history()->peer->input,
+			MTP_int(item->id.bare)
+		)).done([=](const MTPUpdates &result) {
+			_session->api().applyUpdates(result);
+			done(QString());
+		}).fail([=](const MTP::Error &error) {
+			done(error.type());
+		}).send();
+	} else {
+		_session->api().request(MTPmessages_EditFactCheck(
+			item->history()->peer->input,
+			MTP_int(item->id.bare),
+			MTP_textWithEntities(
+				MTP_string(text.text),
+				Api::EntitiesToMTP(
+					_session,
+					text.entities,
+					Api::ConvertOption::SkipLocal))
+		)).done([=](const MTPUpdates &result) {
+			_session->api().applyUpdates(result);
+			done(QString());
+		}).fail([=](const MTP::Error &error) {
+			done(error.type());
+		}).send();
+	}
+}
+
 } // namespace Data

Telegram/SourceFiles/data/components/factchecks.h

@@ -32,7 +32,17 @@ public:
 		not_null<HistoryView::Message*> view,
 		not_null<HistoryMessageFactcheck*> factcheck);
 
+	[[nodiscard]] bool canEdit(not_null<HistoryItem*> item) const;
+	[[nodiscard]] int lengthLimit() const;
+
+	void save(
+		FullMsgId itemId,
+		TextWithEntities text,
+		Fn<void(QString)> done);
+
 private:
+	[[nodiscard]] bool canEdit() const;
+
 	void subscribeIfNotYet();
 	void request();
 

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.cpp

@@ -1306,8 +1306,7 @@ void InnerWidget::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 					&& !link
 					&& (view->hasVisibleText()
 						|| mediaHasTextForCopy
-						|| (item->Has<HistoryMessageFactcheck>()
-							&& !item->Get<HistoryMessageFactcheck>()->data.text.empty())
+						|| !item->factcheckText().empty()
 						|| item->Has<HistoryMessageLogEntryOriginal>())) {
 					_menu->addAction(tr::lng_context_copy_text(tr::now), [=] {
 						copyContextText(itemId);

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -35,6 +35,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/effects/reaction_fly_animation.h"
 #include "ui/text/text_options.h"
 #include "ui/text/text_isolated_emoji.h"
+#include "ui/boxes/edit_factcheck_box.h"
 #include "ui/boxes/report_box.h"
 #include "ui/layers/generic_box.h"
 #include "ui/controls/delete_message_context_action.h"
@@ -72,6 +73,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "api/api_who_reacted.h"
 #include "api/api_views.h"
 #include "lang/lang_keys.h"
+#include "data/components/factchecks.h"
 #include "data/components/sponsored_messages.h"
 #include "data/data_session.h"
 #include "data/data_document.h"
@@ -2171,6 +2173,30 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 				}
 			}, &st::menuIconEdit);
 		}
+		if (session->factchecks().canEdit(item)) {
+			const auto text = item->factcheckText();
+			const auto phrase = text.empty()
+				? tr::lng_context_add_factcheck(tr::now)
+				: tr::lng_context_edit_factcheck(tr::now);
+			_menu->addAction(phrase, [=] {
+				controller->show(Box(EditFactcheckBox, text, [=](
+						TextWithEntities result) {
+					const auto done = [=](QString error) {
+						controller->showToast(!error.isEmpty()
+							? error
+							: result.empty()
+							? tr::lng_factcheck_remove_done(tr::now)
+							: text.empty()
+							? tr::lng_factcheck_add_done(tr::now)
+							: tr::lng_factcheck_edit_done(tr::now));
+					};
+					session->factchecks().save(
+						itemId,
+						result,
+						crl::guard(controller, done));
+				}));
+			}, &st::menuIconFactcheck);
+		}
 		const auto pinItem = (item->canPin() && item->isPinned())
 			? item
 			: groupLeaderOrSelf(item);

Telegram/SourceFiles/history/history_item.cpp

@@ -1508,14 +1508,18 @@ void HistoryItem::setFactcheck(MessageFactcheck info) {
 	} else {
 		AddComponents(HistoryMessageFactcheck::Bit());
 		const auto factcheck = Get<HistoryMessageFactcheck>();
+		const auto textChanged = (factcheck->data.text != info.text);
 		if (factcheck->data.hash == info.hash
 			&& (info.needCheck || !factcheck->data.needCheck)) {
 			return;
-		} else if (factcheck->data.text != info.text
+		} else if (textChanged
 			|| factcheck->data.country != info.country
 			|| factcheck->data.hash != info.hash) {
 			factcheck->data = std::move(info);
 			factcheck->requested = false;
+			if (textChanged) {
+				factcheck->page = nullptr;
+			}
 			history()->owner().requestItemResize(this);
 		}
 	}
@@ -1526,6 +1530,13 @@ bool HistoryItem::hasUnrequestedFactcheck() const {
 	return factcheck && factcheck->data.needCheck && !factcheck->requested;
 }
 
+TextWithEntities HistoryItem::factcheckText() const {
+	if (const auto factcheck = Get<HistoryMessageFactcheck>()) {
+		return factcheck->data.text;
+	}
+	return {};
+}
+
 PeerData *HistoryItem::specialNotificationPeer() const {
 	return (mentionsMe() && !_history->peer->isUser())
 		? from().get()
@@ -1725,6 +1736,7 @@ void HistoryItem::applyEdition(HistoryMessageEdition &&edition) {
 	}
 
 	applyTTL(edition.ttl);
+	setFactcheck(FromMTP(this, edition.mtpFactcheck));
 
 	finishEdition(keyboardTop);
 }

Telegram/SourceFiles/history/history_item.h

@@ -208,6 +208,7 @@ public:
 		const TextWithEntities &content);
 	void setFactcheck(MessageFactcheck info);
 	[[nodiscard]] bool hasUnrequestedFactcheck() const;
+	[[nodiscard]] TextWithEntities factcheckText() const;
 
 	[[nodiscard]] not_null<Data::Thread*> notificationThread() const;
 	[[nodiscard]] not_null<History*> history() const {

Telegram/SourceFiles/history/history_item_components.cpp

@@ -1065,6 +1065,12 @@ HistoryMessageLogEntryOriginal::~HistoryMessageLogEntryOriginal() = default;
 MessageFactcheck FromMTP(
 		not_null<HistoryItem*> item,
 		const tl::conditional<MTPFactCheck> &factcheck) {
+	return FromMTP(&item->history()->session(), factcheck);
+}
+
+MessageFactcheck FromMTP(
+		not_null<Main::Session*> session,
+		const tl::conditional<MTPFactCheck> &factcheck) {
 	auto result = MessageFactcheck();
 	if (!factcheck) {
 		return result;
@@ -1074,9 +1080,7 @@ MessageFactcheck FromMTP(
 		const auto &data = text->data();
 		result.text = {
 			qs(data.vtext()),
-			Api::EntitiesFromMTP(
-				&item->history()->session(),
-				data.ventities().v),
+			Api::EntitiesFromMTP(session, data.ventities().v),
 		};
 	}
 	if (const auto country = data.vcountry()) {

Telegram/SourceFiles/history/history_item_components.h

@@ -17,6 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 struct WebPageData;
 class VoiceSeekClickHandler;
+class ReplyKeyboard;
 
 namespace Ui {
 struct ChatPaintContext;
@@ -31,6 +32,7 @@ struct GeometryDescriptor;
 namespace Data {
 class Session;
 class Story;
+class SavedSublist;
 } // namespace Data
 
 namespace Media::Player {
@@ -47,6 +49,10 @@ class Document;
 class TranscribeButton;
 } // namespace HistoryView
 
+namespace style {
+struct BotKeyboardButton;
+} // namespace style
+
 struct HistoryMessageVia : public RuntimeComponent<HistoryMessageVia, HistoryItem> {
 	void create(not_null<Data::Session*> owner, UserId userId);
 	void resize(int32 availw) const;
@@ -579,6 +585,9 @@ struct MessageFactcheck {
 [[nodiscard]] MessageFactcheck FromMTP(
 	not_null<HistoryItem*> item,
 	const tl::conditional<MTPFactCheck> &factcheck);
+[[nodiscard]] MessageFactcheck FromMTP(
+	not_null<Main::Session*> session,
+	const tl::conditional<MTPFactCheck> &factcheck);
 
 struct HistoryMessageFactcheck
 : public RuntimeComponent<HistoryMessageFactcheck, HistoryItem> {

Telegram/SourceFiles/history/history_item_edition.cpp

@@ -24,6 +24,7 @@ HistoryMessageEdition::HistoryMessageEdition(
 	replyMarkup = HistoryMessageMarkupData(message.vreply_markup());
 	mtpMedia = message.vmedia();
 	mtpReactions = message.vreactions();
+	mtpFactcheck = message.vfactcheck();
 	views = message.vviews().value_or(-1);
 	forwards = message.vforwards().value_or(-1);
 	if (const auto mtpReplies = message.vreplies()) {

Telegram/SourceFiles/history/history_item_edition.h

@@ -36,4 +36,5 @@ struct HistoryMessageEdition {
 	HistoryMessageRepliesData replies;
 	const MTPMessageMedia *mtpMedia = nullptr;
 	const MTPMessageReactions *mtpReactions = nullptr;
+	const MTPFactCheck *mtpFactcheck = nullptr;
 };

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -917,8 +917,8 @@ QSize Message::performCountOptimalSize() {
 			minHeight += st::msgPadding.top();
 			if (mediaDisplayed) minHeight += st::mediaInBubbleSkip;
 			if (entry) minHeight += st::mediaInBubbleSkip;
-			if (check) minHeight += st::mediaInBubbleSkip;
 		}
+		if (check) minHeight += st::mediaInBubbleSkip;
 		if (mediaDisplayed) {
 			// Parts don't participate in maxWidth() in case of media message.
 			if (media->enforceBubbleWidth()) {
@@ -1308,7 +1308,7 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 			trect.setHeight(trect.height() - entry->height());
 		}
 		if (check) {
-			trect.setHeight(trect.height() - check->height());
+			trect.setHeight(trect.height() - check->height() - st::mediaInBubbleSkip);
 		}
 		if (displayInfo) {
 			trect.setHeight(trect.height()
@@ -1371,7 +1371,7 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 		}
 		if (check) {
 			auto checkLeft = inner.left();
-			auto checkTop = trect.y() + trect.height();
+			auto checkTop = trect.y() + trect.height() + st::mediaInBubbleSkip;
 			p.translate(checkLeft, checkTop);
 			auto checkContext = context.translated(checkLeft, -checkTop);
 			checkContext.selection = skipTextSelection(context.selection);
@@ -1986,7 +1986,7 @@ PointState Message::pointState(QPoint point) const {
 			//}
 			if (check) {
 				auto checkHeight = check->height();
-				trect.setHeight(trect.height() - checkHeight);
+				trect.setHeight(trect.height() - checkHeight - st::mediaInBubbleSkip);
 			}
 			if (entry) {
 				auto entryHeight = entry->height();
@@ -2428,9 +2428,9 @@ TextState Message::textState(
 		}
 		if (check) {
 			auto checkHeight = check->height();
-			trect.setHeight(trect.height() - checkHeight);
+			trect.setHeight(trect.height() - checkHeight - st::mediaInBubbleSkip);
 			auto checkLeft = inner.left();
-			auto checkTop = trect.y() + trect.height();
+			auto checkTop = trect.y() + trect.height() + st::mediaInBubbleSkip;
 			if (point.y() >= checkTop && point.y() < checkTop + checkHeight) {
 				result = check->textState(
 					point - QPoint(checkLeft, checkTop),
@@ -4333,7 +4333,7 @@ int Message::resizeContentGetHeight(int newWidth) {
 		if (contentWidth == maxWidth()) {
 			if (mediaDisplayed) {
 				if (check) {
-					newHeight += check->resizeGetHeight(contentWidth);
+					newHeight += check->resizeGetHeight(contentWidth) + st::mediaInBubbleSkip;
 				}
 				if (entry) {
 					newHeight += entry->resizeGetHeight(contentWidth);
@@ -4365,24 +4365,16 @@ int Message::resizeContentGetHeight(int newWidth) {
 			if (!mediaOnTop) {
 				newHeight += st::msgPadding.top();
 				if (mediaDisplayed) newHeight += st::mediaInBubbleSkip;
-				if (check) newHeight += st::mediaInBubbleSkip;
 				if (entry) newHeight += st::mediaInBubbleSkip;
 			}
 			if (mediaDisplayed) {
 				newHeight += media->height();
-				if (check) {
-					newHeight += check->resizeGetHeight(contentWidth);
-				}
-				if (entry) {
-					newHeight += entry->resizeGetHeight(contentWidth);
-				}
-			} else {
-				if (check) {
-					newHeight += check->resizeGetHeight(contentWidth);
-				}
-				if (entry) {
-					newHeight += entry->resizeGetHeight(contentWidth);
-				}
+			}
+			if (check) {
+				newHeight += check->resizeGetHeight(contentWidth) + st::mediaInBubbleSkip;
+			}
+			if (entry) {
+				newHeight += entry->resizeGetHeight(contentWidth);
 			}
 			if (reactionsInBubble) {
 				if (!mediaDisplayed || _viewButton) {
@@ -4518,7 +4510,8 @@ void Message::refreshInfoSkipBlock() {
 				return media->storyExpired();
 			}
 			return false;
-		} else if (item->Has<HistoryMessageLogEntryOriginal>()) {
+		} else if (item->Has<HistoryMessageLogEntryOriginal>()
+			|| factcheckBlock()) {
 			return false;
 		} else if (media && media->isDisplayed() && !_invertMedia) {
 			return false;

Telegram/SourceFiles/ui/boxes/edit_factcheck_box.cpp

@@ -0,0 +1,81 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "ui/boxes/edit_factcheck_box.h"
+
+#include "lang/lang_keys.h"
+#include "ui/widgets/fields/input_field.h"
+#include "styles/style_chat.h"
+#include "styles/style_layers.h"
+
+void EditFactcheckBox(
+		not_null<Ui::GenericBox*> box,
+		TextWithEntities current,
+		Fn<void(TextWithEntities)> save) {
+	box->setTitle(tr::lng_factcheck_title());
+
+	const auto field = box->addRow(object_ptr<Ui::InputField>(
+		box,
+		st::factcheckField,
+		Ui::InputField::Mode::NoNewlines,
+		tr::lng_factcheck_placeholder(),
+		TextWithTags{
+			current.text,
+			TextUtilities::ConvertEntitiesToTextTags(current.entities)
+		}));
+
+	enum class State {
+		Initial,
+		Changed,
+		Removed,
+	};
+	const auto state = box->lifetime().make_state<rpl::variable<State>>(
+		State::Initial);
+	field->changes() | rpl::start_with_next([=] {
+		const auto now = field->getLastText().trimmed();
+		*state = !now.isEmpty()
+			? State::Changed
+			: current.empty()
+			? State::Initial
+			: State::Removed;
+	}, field->lifetime());
+
+	state->value() | rpl::start_with_next([=](State state) {
+		box->clearButtons();
+		if (state == State::Removed) {
+			box->addButton(tr::lng_box_remove(), [=] {
+				box->closeBox();
+				save({});
+			}, st::attentionBoxButton);
+		} else if (state == State::Initial) {
+			box->addButton(tr::lng_settings_save(), [=] {
+				if (current.empty()) {
+					field->showError();
+				} else {
+					box->closeBox();
+				}
+			});
+		} else {
+			box->addButton(tr::lng_settings_save(), [=] {
+				auto result = field->getTextWithAppliedMarkdown();
+
+				box->closeBox();
+				save({
+					result.text,
+					TextUtilities::ConvertTextTagsToEntities(result.tags)
+				});
+			});
+		}
+		box->addButton(tr::lng_cancel(), [=] {
+			box->closeBox();
+		});
+	}, box->lifetime());
+
+	box->setFocusCallback([=] {
+		field->setFocusFast();
+	});
+}

Telegram/SourceFiles/ui/boxes/edit_factcheck_box.h

@@ -0,0 +1,15 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "ui/layers/generic_box.h"
+
+void EditFactcheckBox(
+	not_null<Ui::GenericBox*> box,
+	TextWithEntities current,
+	Fn<void(TextWithEntities)> save);

Telegram/SourceFiles/ui/chat/chat.style

@@ -1135,3 +1135,18 @@ effectPreviewLoading: InfiniteRadialAnimation(defaultInfiniteRadialAnimation) {
 
 factcheckIconExpand: icon {{ "fast_to_original-rotate_cw", historyPeer1NameFg }};
 factcheckIconCollapse: icon {{ "fast_to_original-rotate_ccw", historyPeer1NameFg }};
+factcheckField: InputField(defaultInputField) {
+	textBg: transparent;
+	textMargins: margins(0px, 0px, 0px, 4px);
+
+	placeholderFg: placeholderFg;
+	placeholderFgActive: placeholderFgActive;
+	placeholderFgError: placeholderFgActive;
+	placeholderMargins: margins(2px, 0px, 2px, 0px);
+	placeholderScale: 0.;
+	placeholderFont: normalFont;
+
+	heightMin: 24px;
+
+	font: normalFont;
+}

Telegram/SourceFiles/ui/menu_icons.style

@@ -153,6 +153,7 @@ menuIconTagFilter: icon{{ "menu/tag_filter", menuIconColor }};
 menuIconTagRename: icon{{ "menu/tag_rename", menuIconColor }};
 menuIconGroupsHide: icon {{ "menu/hide_members", menuIconColor }};
 menuIconFont: icon {{ "menu/fonts", menuIconColor }};
+menuIconFactcheck: icon {{ "menu/factcheck", menuIconColor }};
 
 menuIconTTLAny: icon {{ "menu/auto_delete_plain", menuIconColor }};
 menuIconTTLAnyTextPosition: point(11px, 22px);

Telegram/cmake/td_ui.cmake

@@ -261,6 +261,8 @@ PRIVATE
     ui/boxes/country_select_box.h
     ui/boxes/edit_birthday_box.cpp
     ui/boxes/edit_birthday_box.h
+    ui/boxes/edit_factcheck_box.cpp
+    ui/boxes/edit_factcheck_box.h
     ui/boxes/edit_invite_link.cpp
     ui/boxes/edit_invite_link.h
     ui/boxes/rate_call_box.cpp