Added demo account support

approot/admin-user.xml

@@ -33,7 +33,7 @@
 
 		<div class="form-group">
 			<label class="control-label col-sm-2"  for="${id:audio-bitrate-limit}">
-				Audio Bitrate Limit
+				${tr:Lms.Admin.User.audio-bitrate-limit}
 			</label>
 			<div class="col-sm-5">
 				<div class="input-group">
@@ -45,7 +45,19 @@
 				${audio-bitrate-limit-info}
 			</div>
 		</div>
-
+		${<if-demo>}
+		<div class="form-group">
+			<label class="control-label col-sm-2"  for="${id:demo}">
+				${tr:Lms.Admin.User.demo-account}
+			</label>
+			<div class="col-sm-5">
+				${demo}
+			</div>
+			<div class="help-block col-sm-5">
+				${demo-info}
+			</div>
+		</div>
+		${</if-demo>}
 		<div class="form-group">
 			<div class="col-sm-offset-2 col-sm-10">
 				${save-btn class="btn-primary"}

approot/admin-users.xml

@@ -11,7 +11,7 @@
 
 <message id="Lms.Admin.Users.template.entry">
 	<div class="list-group-item">
-		${name} ${<if-edit>}${edit-btn} ${del-btn class="btn-danger"}${</if-edit>}
+		${name} ${<if-tag>}<span class="badge">${tag}</span>${</if-tag>} ${<if-edit>}${edit-btn} ${del-btn class="btn-danger"}${</if-edit>}
 	</div>
 </message>
 

approot/messages.xml

@@ -36,10 +36,17 @@
 
 <!--Users-->
 <message id="Lms.Admin.Users.add">New user</message>
+<message id="Lms.Admin.Users.admin">Admin</message>
 <message id="Lms.Admin.Users.del">Delete</message>
+<message id="Lms.Admin.Users.demo">Demo</message>
 <message id="Lms.Admin.Users.edit">Edit</message>
 <message id="Lms.Admin.Users.users">Users</message>
 
+<!--User-->
+<message id="Lms.Admin.User.audio-bitrate-limit">Audio bitrate limit</message>
+<message id="Lms.Admin.User.demo-account">Demo account</message>
+<message id="Lms.Admin.User.demo-account-already-exists">Demo account already exists!</message>
+<message id="Lms.Admin.User.demo-password-invalid">Demo password must be the login name!</message>
 <message id="Lms.Admin.User.user-already-exists">User already exists!</message>
 <message id="Lms.Admin.User.user-create">New user</message>
 <message id="Lms.Admin.User.user-created">New user created!</message>
@@ -83,6 +90,7 @@
 <message id="Lms.Settings.audio">Audio</message>
 <message id="Lms.Settings.auto">Auto</message>
 <message id="Lms.Settings.bitrate">Bitrate</message>
+<message id="Lms.Settings.demo-cannot-save">Cannot save using a demo account!</message>
 <message id="Lms.Settings.encoding">Encoding</message>
 <message id="Lms.Settings.mp3">MP3</message>
 <message id="Lms.Settings.oga">OGA</message>

conf/lms.conf

@@ -20,4 +20,5 @@ wt-resources="/usr/share/Wt/resources";
 docroot = "/usr/share/lms/docroot/;/resources,/css,/images,/js,/favicon.ico";
 approot = "/usr/share/lms/approot";
 
-
+# Turn on this option to allow the demo account creation/use
+#demo = false;

src/database/User.cpp

@@ -33,7 +33,7 @@ User::audioBitrates =
 
 User::User()
 : _maxAudioBitrate(audioBitrates.back()),
-_isAdmin(false),
+_type(Type::REGULAR),
 _audioBitrate(defaultAudioBitrate),
 _audioEncoding(AudioEncoding::AUTO),
 _curPlayingTrackPos(0)
@@ -48,6 +48,13 @@ User::getAll(Wt::Dbo::Session& session)
 	return std::vector<pointer>(res.begin(), res.end());
 }
 
+User::pointer
+User::getDemo(Wt::Dbo::Session& session)
+{
+	pointer res = session.find<User>().where("type = ?").bind(Type::DEMO);
+	return res;
+}
+
 User::pointer
 User::create(Wt::Dbo::Session& session)
 {
@@ -55,7 +62,7 @@ User::create(Wt::Dbo::Session& session)
 }
 
 User::pointer
-User::getById(Wt::Dbo::Session& session, id_type id)
+User::getById(Wt::Dbo::Session& session, IdType id)
 {
 	return session.find<User>().where("id = ?").bind( id );
 }

src/database/User.hpp

@@ -24,6 +24,8 @@
 #include <Wt/Dbo/Dbo.h>
 #include <Wt/Auth/Dbo/AuthInfo.h>
 
+#include "Types.hpp"
+
 namespace Database {
 
 class User;
@@ -43,12 +45,18 @@ enum class AudioEncoding
 class User : public Wt::Dbo::Dbo<User>
 {
 	public:
-		typedef Wt::Dbo::dbo_traits<User>::IdType id_type;
-		typedef Wt::Dbo::ptr<User>	pointer;
+		using pointer = Wt::Dbo::ptr<User>;
 
 		static const std::size_t MinNameLength = 3;
 		static const std::size_t MaxNameLength = 15;
 
+		enum class Type
+		{
+			REGULAR,
+			ADMIN,
+			DEMO
+		};
+
 		// list of audio parameters
 		static const std::vector<std::size_t> audioBitrates;
 
@@ -58,18 +66,20 @@ class User : public Wt::Dbo::Dbo<User>
 		static pointer create(Wt::Dbo::Session& session);
 
 		// accessors
-		static pointer			getById(Wt::Dbo::Session& session, id_type id);
+		static pointer			getById(Wt::Dbo::Session& session, IdType id);
 		static std::vector<pointer>	getAll(Wt::Dbo::Session& session);
+		static pointer			getDemo(Wt::Dbo::Session& session);
 
 		// write
-		void setAdmin(bool admin)	{ _isAdmin = admin; }
+		void setType(Type type)	{ _type = type; }
 		void setAudioBitrate(std::size_t bitrate);
 		void setAudioEncoding(AudioEncoding encoding)	{ _audioEncoding = encoding; }
 		void setMaxAudioBitrate(std::size_t bitrate);
 		void setCurPlayingTrackPos(std::size_t pos) { _curPlayingTrackPos = pos; }
 
 		// read
-		bool isAdmin() const { return _isAdmin; }
+		bool isAdmin() const { return _type == Type::ADMIN; }
+		bool isDemo() const { return _type == Type::DEMO; }
 		std::size_t	getAudioBitrate() const;
 		AudioEncoding	getAudioEncoding() const { return _audioEncoding; }
 		std::size_t	getMaxAudioBitrate() const;
@@ -79,7 +89,7 @@ class User : public Wt::Dbo::Dbo<User>
 			void persist(Action& a)
 			{
 				Wt::Dbo::field(a, _maxAudioBitrate, "max_audio_bitrate");
-				Wt::Dbo::field(a, _isAdmin, "admin");
+				Wt::Dbo::field(a, _type, "type");
 				Wt::Dbo::field(a, _audioBitrate, "audio_bitrate");
 				Wt::Dbo::field(a, _audioEncoding, "audio_encoding");
 				// User's dynamic data
@@ -93,7 +103,7 @@ class User : public Wt::Dbo::Dbo<User>
 
 		// Admin defined settings
 		int	 	_maxAudioBitrate;
-		bool		_isAdmin;
+		Type		_type;
 
 		// User defined settings
 		int		_audioBitrate;

src/ui/Auth.cpp

@@ -40,6 +40,18 @@ Auth::Auth()
 	// LoginName
 	setFormWidget(Wt::Auth::AuthModel::LoginNameField, std::make_unique<Wt::WLineEdit>());
 
+	{
+		Wt::Dbo::Transaction transaction(LmsApp->getDboSession());
+
+		auto demoUser = Database::User::getDemo(LmsApp->getDboSession());
+		if (demoUser)
+		{
+			Wt::Auth::User authUser = LmsApp->getDb().getUserDatabase().findWithId(std::to_string(demoUser.id()));
+			_model->setValue(Wt::Auth::AuthModel::LoginNameField, authUser.identity(Wt::Auth::Identity::LoginName));
+			_model->setValue(Wt::Auth::AuthModel::PasswordField, authUser.identity(Wt::Auth::Identity::LoginName));
+		}
+	}
+
 	// Password
 	auto password = std::make_unique<Wt::WLineEdit>();
 	password->setEchoMode(Wt::EchoMode::Password);

src/ui/SettingsView.cpp

@@ -295,6 +295,17 @@ SettingsView::refreshView()
 
 	saveBtn->clicked().connect(std::bind([=] ()
 	{
+
+		{
+			Wt::Dbo::Transaction transaction(LmsApp->getDboSession());
+
+			if (LmsApp->getUser()->isDemo())
+			{
+				LmsApp->notifyMsg(Wt::WString::tr("Lms.Settings.demo-cannot-save"));
+				return;
+			}
+		}
+
 		t->updateModel(model.get());
 
 		if (model->validate())

src/ui/admin/InitWizardView.cpp

@@ -69,7 +69,7 @@ class InitWizardModel : public Wt::WFormModel
 			authUser.setIdentity(Wt::Auth::Identity::LoginName, valueText(AdminLoginField));
 			Database::Handler::getPasswordService().updatePassword(authUser, valueText(PasswordField));
 
-			user.modify()->setAdmin( true );
+			user.modify()->setType(Database::User::Type::ADMIN);
 		}
 
 		bool validateField(Field field)

src/ui/admin/UserView.cpp

@@ -30,6 +30,7 @@
 #include <Wt/WStringListModel.h>
 
 #include "common/Validators.hpp"
+#include "utils/Config.hpp"
 #include "utils/Exception.hpp"
 #include "utils/Logger.hpp"
 #include "utils/Utils.hpp"
@@ -45,8 +46,9 @@ class UserModel : public Wt::WFormModel
 		static const Field LoginField;
 		static const Field PasswordField;
 		static const Field BitrateLimitField;
+		static const Field DemoField;
 
-		UserModel(boost::optional<Database::User::id_type> userId)
+		UserModel(boost::optional<Database::IdType> userId)
 		: Wt::WFormModel(),
 		_userId(userId)
 		{
@@ -58,7 +60,7 @@ class UserModel : public Wt::WFormModel
 
 			addField(PasswordField);
 			addField(BitrateLimitField);
-
+			addField(DemoField);
 
 			if (!_userId)
 				setValidator(PasswordField, createMandatoryValidator());
@@ -76,8 +78,8 @@ class UserModel : public Wt::WFormModel
 
 			Wt::Dbo::Transaction transaction(LmsApp->getDboSession());
 
-			Wt::Auth::User authUser = LmsApp->getDb().getUserDatabase().findWithId( std::to_string(*_userId) );
-			Database::User::pointer user = LmsApp->getDb().getUser(authUser);
+			auto authUser = LmsApp->getDb().getUserDatabase().findWithId( std::to_string(*_userId) );
+			auto user = LmsApp->getDb().getUser(authUser);
 
 			if (user == LmsApp->getUser())
 				throw LmsException("Cannot edit ourselves");
@@ -117,6 +119,9 @@ class UserModel : public Wt::WFormModel
 
 				auto bitrateLimitRow = getBitrateLimitRow(Wt::asString(value(BitrateLimitField)));
 				user.modify()->setMaxAudioBitrate(bitrateLimit(*bitrateLimitRow));
+
+				if (Wt::asNumber(value(DemoField)))
+					user.modify()->setType(Database::User::Type::DEMO);
 			}
 		}
 
@@ -140,30 +145,41 @@ class UserModel : public Wt::WFormModel
 				auto user = LmsApp->getDb().getUserDatabase().findWithIdentity(Wt::Auth::Identity::LoginName, valueText(LoginField));
 				if (user.isValid())
 					error = Wt::WString::tr("Lms.Admin.User.user-already-exists");
-				else
-					return Wt::WFormModel::validateField(field);
 			}
 			else if (field == PasswordField)
 			{
 				if (!valueText(PasswordField).empty())
 				{
-					// Evaluate the strength of the password
+					if (Wt::asNumber(value(DemoField)))
+					{
+						//Demo account: password must be the same as the login name
+						if (valueText(PasswordField) != getLogin())
+							error = Wt::WString::tr("Lms.Admin.User.demo-password-invalid");
+					}
+					else
+					{
+						// Evaluate the strength of the password for non demo accounts
 						auto res = Database::Handler::getPasswordService().strengthValidator()->evaluateStrength(valueText(PasswordField), getLogin(), "");
 
 						if (!res.isValid())
 							error = res.message();
 					}
-				else
-					return Wt::WFormModel::validateField(field);
 				}
-			else
+			}
+			else if (field == DemoField)
 			{
-				return Wt::WFormModel::validateField(field);
+				Wt::Dbo::Transaction transaction(LmsApp->getDboSession());
+
+				if (Wt::asNumber(value(DemoField)) && Database::User::getDemo(LmsApp->getDboSession()))
+					error = Wt::WString::tr("Lms.Admin.User.demo-account-already-exists");
 			}
 
-			setValidation(field, Wt::WValidator::Result( error.empty() ? Wt::ValidationState::Valid : Wt::ValidationState::Invalid, error));
+			if (error.empty())
+				return Wt::WFormModel::validateField(field);
 
-			return (validation(field).state() == Wt::ValidationState::Valid);
+			setValidation(field, Wt::WValidator::Result( Wt::ValidationState::Invalid, error));
+
+			return false;
 		}
 
 		boost::optional<int> getBitrateLimitRow(Wt::WString value)
@@ -219,12 +235,13 @@ class UserModel : public Wt::WFormModel
 		}
 
 		std::shared_ptr<Wt::WStringListModel>	_bitrateModel;
-		boost::optional<Database::User::id_type> _userId;
+		boost::optional<Database::IdType> _userId;
 };
 
 const Wt::WFormModel::Field UserModel::LoginField = "login";
 const Wt::WFormModel::Field UserModel::PasswordField = "password";
 const Wt::WFormModel::Field UserModel::BitrateLimitField = "audio-bitrate-limit";
+const Wt::WFormModel::Field UserModel::DemoField = "demo";
 
 UserView::UserView()
 {
@@ -242,7 +259,7 @@ UserView::refreshView()
 	if (!wApp->internalPathMatches("/admin/user"))
 		return;
 
-	auto userId = readAs<Database::User::id_type>(wApp->internalPathNextPart("/admin/user/"));
+	auto userId = readAs<Database::IdType>(wApp->internalPathNextPart("/admin/user/"));
 
 	LMS_LOG(UI, DEBUG) << "userId = " << (userId ? std::to_string(*userId) : "none");
 
@@ -276,6 +293,11 @@ UserView::refreshView()
 	bitrate->setModel(model->bitrateModel());
 	t->setFormWidget(UserModel::BitrateLimitField, std::move(bitrate));
 
+	// Demo account
+	t->setFormWidget(UserModel::DemoField, std::make_unique<Wt::WCheckBox>());
+	if (!userId && Config::instance().getBool("demo", false))
+		t->setCondition("if-demo", true);
+
 	Wt::WPushButton* saveBtn = t->bindNew<Wt::WPushButton>("save-btn", Wt::WString::tr(userId ? "Lms.save" : "Lms.create"));
 	saveBtn->clicked().connect(std::bind([=]
 	{

src/ui/admin/UsersView.cpp

@@ -74,6 +74,13 @@ UsersView::refreshView()
 
 		entry->bindString("name", authUser.identity(Wt::Auth::Identity::LoginName), Wt::TextFormat::Plain);
 
+		// Create tag
+		if (user->isAdmin() || user->isDemo())
+		{
+			entry->setCondition("if-tag", true);
+			entry->bindString("tag", Wt::WString::tr(user->isAdmin() ? "Lms.Admin.Users.admin" : "Lms.Admin.Users.demo"));
+		}
+
 		// Don't edit ourself this way
 		if (LmsApp->getUser() == user)
 			continue;