Removed static storing of passport config.

Telegram/SourceFiles/passport/passport_form_controller.cpp

@@ -42,8 +42,6 @@ constexpr auto kTranslationScansLimit = 20;
 constexpr auto kShortPollTimeout = crl::time(3000);
 constexpr auto kRememberCredentialsDelay = crl::time(1800 * 1000);
 
-Config GlobalConfig;
-
 bool ForwardServiceErrorRequired(const QString &error) {
 	return (error == qstr("BOT_INVALID"))
 		|| (error == qstr("PUBLIC_KEY_REQUIRED"))
@@ -239,46 +237,35 @@ QString ValidateUrl(const QString &url) {
 		: result;
 }
 
+auto ParseConfig(const QByteArray &json) {
+	auto languagesByCountryCode = std::map<QString, QString>();
+	auto error = QJsonParseError{ 0, QJsonParseError::NoError };
+	const auto document = QJsonDocument::fromJson(json, &error);
+	if (error.error != QJsonParseError::NoError) {
+		LOG(("API Error: Failed to parse passport config, error: %1."
+			).arg(error.errorString()));
+		return languagesByCountryCode;
+	} else if (!document.isObject()) {
+		LOG(("API Error: Not an object received in passport config."));
+		return languagesByCountryCode;
+	}
+	const auto object = document.object();
+	for (auto i = object.constBegin(); i != object.constEnd(); ++i) {
+		const auto countryCode = i.key();
+		const auto language = i.value();
+		if (!language.isString()) {
+			LOG(("API Error: Not a string in passport config item."));
+			continue;
+		}
+		languagesByCountryCode.emplace(
+			countryCode,
+			language.toString());
+	}
+	return languagesByCountryCode;
+}
+
 } // namespace
 
-Config &ConfigInstance() {
-	return GlobalConfig;
-}
-
-Config ParseConfig(const MTPhelp_PassportConfig &data) {
-	return data.match([](const MTPDhelp_passportConfig &data) {
-		auto result = Config();
-		result.hash = data.vhash().v;
-		auto error = QJsonParseError{ 0, QJsonParseError::NoError };
-		const auto document = QJsonDocument::fromJson(
-			data.vcountries_langs().c_dataJSON().vdata().v,
-			&error);
-		if (error.error != QJsonParseError::NoError) {
-			LOG(("API Error: Failed to parse passport config, error: %1."
-				).arg(error.errorString()));
-			return result;
-		} else if (!document.isObject()) {
-			LOG(("API Error: Not an object received in passport config."));
-			return result;
-		}
-		const auto object = document.object();
-		for (auto i = object.constBegin(); i != object.constEnd(); ++i) {
-			const auto countryCode = i.key();
-			const auto language = i.value();
-			if (!language.isString()) {
-				LOG(("API Error: Not a string in passport config item."));
-				continue;
-			}
-			result.languagesByCountryCode.emplace(
-				countryCode,
-				language.toString());
-		}
-		return result;
-	}, [](const MTPDhelp_passportConfigNotModified &data) {
-		return ConfigInstance();
-	});
-}
-
 QString NonceNameByScope(const QString &scope) {
 	if (scope.startsWith('{') && scope.endsWith('}')) {
 		return qsl("nonce");
@@ -638,7 +625,6 @@ Main::Session &FormController::session() const {
 void FormController::show() {
 	requestForm();
 	requestPassword();
-	requestConfig();
 }
 
 UserData *FormController::bot() const {
@@ -1242,6 +1228,44 @@ void FormController::fillErrors() {
 	}
 }
 
+rpl::producer<EditDocumentCountry> FormController::preferredLanguage(
+		const QString &countryCode) {
+	const auto findLang = [=] {
+		if (countryCode.isEmpty()) {
+			return QString();
+		}
+		auto &langs = _passportConfig.languagesByCountryCode;
+		const auto i = langs.find(countryCode);
+		return (i == end(langs)) ? QString() : i->second;
+	};
+	return [=](auto consumer) {
+		const auto hash = _passportConfig.hash;
+		if (hash) {
+			consumer.put_next({ countryCode, findLang() });
+			consumer.put_done();
+			return rpl::lifetime() ;
+		}
+
+		_api.request(MTPhelp_GetPassportConfig(
+			MTP_int(hash)
+		)).done([=](const MTPhelp_PassportConfig &result) {
+			result.match([&](const MTPDhelp_passportConfig &data) {
+				_passportConfig.hash = data.vhash().v;
+				_passportConfig.languagesByCountryCode = ParseConfig(
+					data.vcountries_langs().c_dataJSON().vdata().v);
+			}, [](const MTPDhelp_passportConfigNotModified &data) {
+			});
+			consumer.put_next({ countryCode, findLang() });
+			consumer.put_done();
+		}).fail([=](const MTP::Error &error) {
+			consumer.put_next({ countryCode, QString() });
+			consumer.put_done();
+		}).send();
+
+		return rpl::lifetime();
+	};
+}
+
 void FormController::fillNativeFromFallback() {
 	// Check if additional values (*_name_native) were requested.
 	const auto i = _form.values.find(Value::Type::PersonalDetails);
@@ -1254,48 +1278,58 @@ void FormController::fillNativeFromFallback() {
 	const auto scheme = GetDocumentScheme(
 		Scope::Type::PersonalDetails,
 		std::nullopt,
-		true);
+		true,
+		[=](const QString &code) { return preferredLanguage(code); });
 	const auto dependencyIt = values.fields.find(
 		scheme.additionalDependencyKey);
 	const auto dependency = (dependencyIt == end(values.fields))
 		? QString()
 		: dependencyIt->second.text;
-	if (scheme.additionalShown(dependency)
-		!= EditDocumentScheme::AdditionalVisibility::OnlyIfError) {
-		return;
-	}
 
 	// Copy additional values from fallback if they're not filled yet.
-	auto changed = false;
 	using Scheme = EditDocumentScheme;
-	for (const auto &row : scheme.rows) {
-		if (row.valueClass == Scheme::ValueClass::Additional) {
-			const auto nativeIt = values.fields.find(row.key);
-			const auto native = (nativeIt == end(values.fields))
-				? QString()
-				: nativeIt->second.text;
-			if (!native.isEmpty()
-				|| (nativeIt != end(values.fields)
-					&& !nativeIt->second.error.isEmpty())) {
-				return;
-			}
-			const auto latinIt = values.fields.find(
-				row.additionalFallbackKey);
-			const auto latin = (latinIt == end(values.fields))
-				? QString()
-				: latinIt->second.text;
-			if (row.error(latin).has_value()) {
-				return;
-			} else if (native != latin) {
-				values.fields[row.key].text = latin;
-				changed = true;
+	scheme.preferredLanguage(
+		dependency
+	) | rpl::map(
+		scheme.additionalShown
+	) | rpl::take(
+		1
+	) | rpl::start_with_next([=](Scheme::AdditionalVisibility v) {
+		if (v != Scheme::AdditionalVisibility::OnlyIfError) {
+			return;
+		}
+		auto values = i->second.data.parsed;
+		auto changed = false;
+
+		for (const auto &row : scheme.rows) {
+			if (row.valueClass == Scheme::ValueClass::Additional) {
+				const auto nativeIt = values.fields.find(row.key);
+				const auto native = (nativeIt == end(values.fields))
+					? QString()
+					: nativeIt->second.text;
+				if (!native.isEmpty()
+					|| (nativeIt != end(values.fields)
+						&& !nativeIt->second.error.isEmpty())) {
+					return;
+				}
+				const auto latinIt = values.fields.find(
+					row.additionalFallbackKey);
+				const auto latin = (latinIt == end(values.fields))
+					? QString()
+					: latinIt->second.text;
+				if (row.error(latin).has_value()) {
+					return;
+				} else if (native != latin) {
+					values.fields[row.key].text = latin;
+					changed = true;
+				}
 			}
 		}
-	}
-	if (changed) {
-		startValueEdit(&i->second);
-		saveValueEdit(&i->second, std::move(values));
-	}
+		if (changed) {
+			startValueEdit(&i->second);
+			saveValueEdit(&i->second, std::move(values));
+		}
+	}, _lifetime);
 }
 
 void FormController::decryptValue(Value &value) const {
@@ -2507,20 +2541,6 @@ void FormController::formDone(const MTPaccount_AuthorizationForm &result) {
 	}
 }
 
-void FormController::requestConfig() {
-	const auto hash = ConfigInstance().hash;
-	_configRequestId = _api.request(MTPhelp_GetPassportConfig(
-		MTP_int(hash)
-	)).done([=](const MTPhelp_PassportConfig &result) {
-		_configRequestId = 0;
-		ConfigInstance() = ParseConfig(result);
-		showForm();
-	}).fail([=](const MTP::Error &error) {
-		_configRequestId = 0;
-		showForm();
-	}).send();
-}
-
 bool FormController::parseForm(const MTPaccount_AuthorizationForm &result) {
 	Expects(result.type() == mtpc_account_authorizationForm);
 
@@ -2614,7 +2634,7 @@ void FormController::shortPollEmailConfirmation() {
 }
 
 void FormController::showForm() {
-	if (_formRequestId || _passwordRequestId || _configRequestId) {
+	if (_formRequestId || _passwordRequestId) {
 		return;
 	} else if (!_bot) {
 		formFail(Lang::Hard::NoAuthorizationBot());

Telegram/SourceFiles/passport/passport_form_controller.h

@@ -29,12 +29,7 @@ class Session;
 
 namespace Passport {
 
-struct Config {
-	int32 hash = 0;
-	std::map<QString, QString> languagesByCountryCode;
-};
-Config &ConfigInstance();
-Config ParseConfig(const MTPhelp_PassportConfig &data);
+struct EditDocumentCountry;
 
 struct SavedCredentials {
 	bytes::vector hashForAuth;
@@ -416,6 +411,9 @@ public:
 	void cancel();
 	void cancelSure();
 
+	[[nodiscard]] rpl::producer<EditDocumentCountry> preferredLanguage(
+		const QString &countryCode);
+
 	rpl::lifetime &lifetime();
 
 	~FormController();
@@ -439,7 +437,6 @@ private:
 
 	void requestForm();
 	void requestPassword();
-	void requestConfig();
 
 	void formDone(const MTPaccount_AuthorizationForm &result);
 	void formFail(const QString &error);
@@ -560,7 +557,6 @@ private:
 	mtpRequestId _formRequestId = 0;
 	mtpRequestId _passwordRequestId = 0;
 	mtpRequestId _passwordCheckRequestId = 0;
-	mtpRequestId _configRequestId = 0;
 
 	PasswordSettings _password;
 	crl::time _lastSrpIdInvalidTime = 0;
@@ -572,6 +568,11 @@ private:
 	mtpRequestId _recoverRequestId = 0;
 	base::flat_map<FileKey, std::unique_ptr<mtpFileLoader>> _fileLoaders;
 
+	struct {
+		int32 hash = 0;
+		std::map<QString, QString> languagesByCountryCode;
+	} _passportConfig;
+
 	rpl::event_stream<not_null<const EditFile*>> _scanUpdated;
 	rpl::event_stream<not_null<const Value*>> _valueSaveFinished;
 	rpl::event_stream<not_null<const Value*>> _verificationNeeded;

Telegram/SourceFiles/passport/passport_form_view_controller.cpp

@@ -377,7 +377,8 @@ QString ComputeScopeRowReadyString(const Scope &scope) {
 		const auto scheme = GetDocumentScheme(
 			scope.type,
 			document ? base::make_optional(document->type) : std::nullopt,
-			scope.details ? scope.details->nativeNames : false);
+			scope.details ? scope.details->nativeNames : false,
+			nullptr);
 		using ValueClass = EditDocumentScheme::ValueClass;
 		const auto skipAdditional = [&] {
 			if (!fields) {

Telegram/SourceFiles/passport/passport_panel_controller.cpp

@@ -117,7 +117,8 @@ std::map<FileType, ScanInfo> PrepareSpecialFiles(const Value &value) {
 EditDocumentScheme GetDocumentScheme(
 		Scope::Type type,
 		std::optional<Value::Type> scansType,
-		bool nativeNames) {
+		bool nativeNames,
+		preferredLangCallback &&preferredLanguage) {
 	using Scheme = EditDocumentScheme;
 	using ValueClass = Scheme::ValueClass;
 	const auto DontFormat = nullptr;
@@ -294,21 +295,17 @@ EditDocumentScheme GetDocumentScheme(
 		if (nativeNames) {
 			result.additionalDependencyKey = qsl("residence_country_code");
 
-			const auto languageValue = [](const QString &countryCode) {
-				if (countryCode.isEmpty()) {
-					return QString();
-				}
-				const auto &config = ConfigInstance();
-				const auto i = config.languagesByCountryCode.find(
-					countryCode);
-				if (i == end(config.languagesByCountryCode)) {
-					return QString();
-				}
-				return Lang::GetNonDefaultValue(
-					kLanguageNamePrefix + i->second.toUtf8());
+			result.preferredLanguage = preferredLanguage
+				? std::move(preferredLanguage)
+				: [](const QString &) {
+					return rpl::single(EditDocumentCountry());
+				};
+			const auto languageValue = [](const QString &langCode) {
+				return Lang::GetNonDefaultValue(kLanguageNamePrefix
+					+ langCode.toUtf8());
 			};
-			result.additionalHeader = [=](const QString &countryCode) {
-				const auto language = languageValue(countryCode);
+			result.additionalHeader = [=](const EditDocumentCountry &info) {
+				const auto language = languageValue(info.languageCode);
 				return language.isEmpty()
 					? tr::lng_passport_native_name_title(tr::now)
 					: tr::lng_passport_native_name_language(
@@ -316,32 +313,28 @@ EditDocumentScheme GetDocumentScheme(
 						lt_language,
 						language);
 			};
-			result.additionalDescription = [=](const QString &countryCode) {
-				const auto language = languageValue(countryCode);
+			result.additionalDescription = [=](
+					const EditDocumentCountry &info) {
+				const auto language = languageValue(info.languageCode);
 				if (!language.isEmpty()) {
-					return tr::lng_passport_native_name_language_about(tr::now);
+					return tr::lng_passport_native_name_language_about(
+						tr::now);
 				}
 				const auto name = Countries::Instance().countryNameByISO2(
-					countryCode);
+					info.countryCode);
 				Assert(!name.isEmpty());
 				return tr::lng_passport_native_name_about(
 					tr::now,
 					lt_country,
 					name);
 			};
-			result.additionalShown = [](const QString &countryCode) {
+			result.additionalShown = [](const EditDocumentCountry &info) {
 				using Result = EditDocumentScheme::AdditionalVisibility;
-				if (countryCode.isEmpty()) {
-					return Result::Hidden;
-				}
-				const auto &config = ConfigInstance();
-				const auto i = config.languagesByCountryCode.find(
-					countryCode);
-				if (i != end(config.languagesByCountryCode)
-					&& i->second == "en") {
-					return Result::OnlyIfError;
-				}
-				return Result::Shown;
+				return (info.countryCode.isEmpty())
+					? Result::Hidden
+					: (info.languageCode == "en")
+					? Result::OnlyIfError
+					: Result::Shown;
 			};
 			using Row = EditDocumentScheme::Row;
 			auto additional = std::initializer_list<Row>{
@@ -1149,6 +1142,10 @@ void PanelController::startScopeEdit(
 		_form->startValueEdit(_editDocument);
 	}
 
+	auto preferredLanguage = [=](const QString &countryCode) {
+		return _form->preferredLanguage(countryCode);
+	};
+
 	auto content = [&]() -> object_ptr<Ui::RpWidget> {
 		switch (_editScope->type) {
 		case Scope::Type::Identity:
@@ -1169,7 +1166,8 @@ void PanelController::startScopeEdit(
 					GetDocumentScheme(
 						_editScope->type,
 						_editDocument->type,
-						_editValue->nativeNames),
+						_editValue->nativeNames,
+						std::move(preferredLanguage)),
 					_editValue->error,
 					_editValue->data.parsedInEdit,
 					_editDocument->error,
@@ -1183,7 +1181,8 @@ void PanelController::startScopeEdit(
 					GetDocumentScheme(
 						_editScope->type,
 						_editDocument->type,
-						false),
+						false,
+						std::move(preferredLanguage)),
 					_editDocument->error,
 					_editDocument->data.parsedInEdit,
 					std::move(scans),
@@ -1204,7 +1203,8 @@ void PanelController::startScopeEdit(
 				GetDocumentScheme(
 					_editScope->type,
 					std::nullopt,
-					_editValue->nativeNames),
+					_editValue->nativeNames,
+					std::move(preferredLanguage)),
 				_editValue->error,
 				_editValue->data.parsedInEdit);
 			const auto weak = Ui::MakeWeak(result.data());

Telegram/SourceFiles/passport/passport_panel_controller.h

@@ -20,15 +20,19 @@ namespace Passport {
 class FormController;
 class Panel;
 
+struct EditDocumentCountry;
 struct EditDocumentScheme;
 struct EditContactScheme;
 
 enum class ReadScanError;
 
+using preferredLangCallback =
+	Fn<rpl::producer<EditDocumentCountry>(const QString &)>;
 EditDocumentScheme GetDocumentScheme(
 	Scope::Type type,
 	std::optional<Value::Type> scansType,
-	bool nativeNames);
+	bool nativeNames,
+	preferredLangCallback &&preferredLanguage);
 EditContactScheme GetContactScheme(Scope::Type type);
 
 const std::map<QString, QString> &LatinToNativeMap();

Telegram/SourceFiles/passport/passport_panel_edit_document.cpp

@@ -425,25 +425,42 @@ not_null<Ui::RpWidget*> PanelEditDocument::setupContent(
 					showIfError = true;
 				}
 			});
-			const auto shown = [=](const QString &code) {
+			const auto shown = [=](const Scheme::CountryInfo &info) {
 				using Result = Scheme::AdditionalVisibility;
-				const auto value = _scheme.additionalShown(code);
+				const auto value = _scheme.additionalShown(info);
 				return (value == Result::Shown)
 					|| (value == Result::OnlyIfError && showIfError);
 			};
 
-			auto title = row->value(
-			) | rpl::filter(
+			auto langValue = row->value(
+			) | rpl::map(
+				_scheme.preferredLanguage
+			) | rpl::flatten_latest();
+
+			auto title = rpl::duplicate(langValue) | rpl::filter(
 				shown
-			) | rpl::map([=](const QString &code) {
-				return _scheme.additionalHeader(code);
+			) | rpl::map([=](const Scheme::CountryInfo &info) {
+				return _scheme.additionalHeader(info);
 			});
-			added->add(
+			const auto headerLabel = added->add(
 				object_ptr<Ui::FlatLabel>(
 					added,
-					std::move(title),
+					rpl::duplicate(title),
 					st::passportFormHeader),
 				st::passportNativeNameHeaderPadding);
+			std::move(
+				title
+			) | rpl::start_with_next([=] {
+				const auto &padding = st::passportNativeNameHeaderPadding;
+				const auto available = added->width()
+					- padding.left()
+					- padding.right();
+				headerLabel->resizeToNaturalWidth(available);
+				headerLabel->moveToLeft(
+					padding.left(),
+					padding.top(),
+					available);
+			}, headerLabel->lifetime());
 
 			enumerateRows([&](
 					int i,
@@ -454,11 +471,10 @@ not_null<Ui::RpWidget*> PanelEditDocument::setupContent(
 				}
 			});
 
-			auto description = row->value(
-			) | rpl::filter(
+			auto description = rpl::duplicate(langValue) | rpl::filter(
 				shown
-			) | rpl::map([=](const QString &code) {
-				return _scheme.additionalDescription(code);
+			) | rpl::map([=](const Scheme::CountryInfo &info) {
+				return _scheme.additionalDescription(info);
 			});
 			added->add(
 				object_ptr<Ui::DividerLabel>(
@@ -470,11 +486,10 @@ not_null<Ui::RpWidget*> PanelEditDocument::setupContent(
 					st::passportFormLabelPadding),
 				st::passportNativeNameAboutMargin);
 
-			wrap->toggleOn(row->value() | rpl::map(shown));
+			wrap->toggleOn(rpl::duplicate(langValue) | rpl::map(shown));
 			wrap->finishAnimating();
 
-			row->value(
-			) | rpl::map(
+			std::move(langValue) | rpl::map(
 				shown
 			) | rpl::start_with_next([=](bool visible) {
 				_additionalShown = visible;

Telegram/SourceFiles/passport/passport_panel_edit_document.h

@@ -39,6 +39,11 @@ class EditScans;
 enum class FileType;
 struct ScanListData;
 
+struct EditDocumentCountry {
+	QString countryCode;
+	QString languageCode;
+};
+
 struct EditDocumentScheme {
 	enum class ValueClass {
 		Fields,
@@ -50,6 +55,7 @@ struct EditDocumentScheme {
 		OnlyIfError,
 		Shown,
 	};
+	using CountryInfo = EditDocumentCountry;
 	struct Row {
 		using Validator = Fn<std::optional<QString>(const QString &value)>;
 		using Formatter = Fn<QString(const QString &value)>;
@@ -69,9 +75,10 @@ struct EditDocumentScheme {
 	QString scansHeader;
 
 	QString additionalDependencyKey;
-	Fn<AdditionalVisibility(const QString &dependency)> additionalShown;
-	Fn<QString(const QString &dependency)> additionalHeader;
-	Fn<QString(const QString &dependency)> additionalDescription;
+	Fn<AdditionalVisibility(const CountryInfo &dependency)> additionalShown;
+	Fn<QString(const CountryInfo &dependency)> additionalHeader;
+	Fn<QString(const CountryInfo &dependency)> additionalDescription;
+	Fn<rpl::producer<CountryInfo>(const QString &)> preferredLanguage;
 
 };