Add read support for room access options (#324)

- Join rules
- Guest access

include/Cache.h

@@ -22,7 +22,9 @@
 #include <QImage>
 #include <json.hpp>
 #include <lmdb++.h>
+#include <mtx/events/join_rules.hpp>
 #include <mtx/responses.hpp>
+using mtx::events::state::JoinRule;
 
 struct RoomMember
 {
@@ -74,6 +76,9 @@ struct RoomInfo
         bool is_invite = false;
         //! Total number of members in the room.
         int16_t member_count = 0;
+        //! Who can access to the room.
+        JoinRule join_rule = JoinRule::Public;
+        bool guest_access  = false;
 };
 
 inline void
@@ -83,6 +88,8 @@ to_json(json &j, const RoomInfo &info)
         j["topic"]        = info.topic;
         j["avatar_url"]   = info.avatar_url;
         j["is_invite"]    = info.is_invite;
+        j["join_rule"]    = info.join_rule;
+        j["guest_access"] = info.guest_access;
 
         if (info.member_count != 0)
                 j["member_count"] = info.member_count;
@@ -95,6 +102,8 @@ from_json(const json &j, RoomInfo &info)
         info.topic        = j.at("topic");
         info.avatar_url   = j.at("avatar_url");
         info.is_invite    = j.at("is_invite");
+        info.join_rule    = j.at("join_rule");
+        info.guest_access = j.at("guest_access");
 
         if (j.count("member_count"))
                 info.member_count = j.at("member_count");
@@ -164,6 +173,9 @@ public:
 
         //! Calculate & return the name of the room.
         QString getRoomName(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb);
+        //! Get room join rules
+        JoinRule getRoomJoinRule(lmdb::txn &txn, lmdb::dbi &statesdb);
+        bool getRoomGuestAccess(lmdb::txn &txn, lmdb::dbi &statesdb);
         //! Retrieve the topic of the room if any.
         QString getRoomTopic(lmdb::txn &txn, lmdb::dbi &statesdb);
         //! Retrieve the room avatar's url if any.

include/dialogs/RoomSettings.hpp

@@ -11,6 +11,7 @@ class Avatar;
 class QPixmap;
 class QLayout;
 class QLabel;
+class QComboBox;
 
 template<class T>
 class QSharedPointer;
@@ -54,6 +55,9 @@ signals:
 protected:
         void paintEvent(QPaintEvent *event) override;
 
+private slots:
+        void save_and_close();
+
 private:
         static constexpr int AvatarSize = 64;
 
@@ -66,6 +70,8 @@ private:
         RoomInfo info_;
         QString room_id_;
         QImage avatarImg_;
+
+        QComboBox *accessCombo;
 };
 
 } // dialogs

src/Cache.cc

@@ -30,7 +30,7 @@
 
 //! Should be changed when a breaking change occurs in the cache format.
 //! This will reset client's data.
-static const std::string CURRENT_CACHE_FORMAT_VERSION("2018.04.21");
+static const std::string CURRENT_CACHE_FORMAT_VERSION("2018.05.11");
 
 static const lmdb::val NEXT_BATCH_KEY("next_batch");
 static const lmdb::val CACHE_FORMAT_VERSION_KEY("cache_format_version");
@@ -551,6 +551,7 @@ RoomInfo
 Cache::singleRoomInfo(const std::string &room_id)
 {
         auto txn      = lmdb::txn::begin(env_, nullptr, MDB_RDONLY);
+        auto statesdb = getStatesDb(txn, room_id);
 
         lmdb::val data;
 
@@ -559,6 +560,8 @@ Cache::singleRoomInfo(const std::string &room_id)
                 try {
                         RoomInfo tmp     = json::parse(std::string(data.data(), data.size()));
                         tmp.member_count = getMembersDb(txn, room_id).size(txn);
+                        tmp.join_rule    = getRoomJoinRule(txn, statesdb);
+                        tmp.guest_access = getRoomGuestAccess(txn, statesdb);
 
                         txn.commit();
 
@@ -584,12 +587,15 @@ Cache::getRoomInfo(const std::vector<std::string> &rooms)
 
         for (const auto &room : rooms) {
                 lmdb::val data;
+                auto statesdb = getStatesDb(txn, room);
 
                 // Check if the room is joined.
                 if (lmdb::dbi_get(txn, roomsDb_, lmdb::val(room), data)) {
                         try {
                                 RoomInfo tmp = json::parse(std::string(data.data(), data.size()));
                                 tmp.member_count = getMembersDb(txn, room).size(txn);
+                                tmp.join_rule    = getRoomJoinRule(txn, statesdb);
+                                tmp.guest_access = getRoomGuestAccess(txn, statesdb);
 
                                 room_info.emplace(QString::fromStdString(room), std::move(tmp));
                         } catch (const json::exception &e) {
@@ -805,6 +811,50 @@ Cache::getRoomName(lmdb::txn &txn, lmdb::dbi &statesdb, lmdb::dbi &membersdb)
         return "Empty Room";
 }
 
+JoinRule
+Cache::getRoomJoinRule(lmdb::txn &txn, lmdb::dbi &statesdb)
+{
+        using namespace mtx::events;
+        using namespace mtx::events::state;
+
+        lmdb::val event;
+        bool res = lmdb::dbi_get(
+          txn, statesdb, lmdb::val(to_string(mtx::events::EventType::RoomJoinRules)), event);
+
+        if (res) {
+                try {
+                        StateEvent<JoinRules> msg =
+                          json::parse(std::string(event.data(), event.size()));
+                        return msg.content.join_rule;
+                } catch (const json::exception &e) {
+                        qWarning() << e.what();
+                }
+        }
+        return JoinRule::Knock;
+}
+
+bool
+Cache::getRoomGuestAccess(lmdb::txn &txn, lmdb::dbi &statesdb)
+{
+        using namespace mtx::events;
+        using namespace mtx::events::state;
+
+        lmdb::val event;
+        bool res = lmdb::dbi_get(
+          txn, statesdb, lmdb::val(to_string(mtx::events::EventType::RoomGuestAccess)), event);
+
+        if (res) {
+                try {
+                        StateEvent<GuestAccess> msg =
+                          json::parse(std::string(event.data(), event.size()));
+                        return msg.content.guest_access == AccessState::CanJoin;
+                } catch (const json::exception &e) {
+                        qWarning() << e.what();
+                }
+        }
+        return false;
+}
+
 QString
 Cache::getRoomTopic(lmdb::txn &txn, lmdb::dbi &statesdb)
 {

src/dialogs/RoomSettings.cpp

@@ -38,8 +38,7 @@ RoomSettings::RoomSettings(const QString &room_id, QWidget *parent)
         setMaximumWidth(385);
 
         try {
-                auto res = cache::client()->getRoomInfo({room_id_.toStdString()});
-                info_    = res[room_id_];
+                info_ = cache::client()->singleRoomInfo(room_id_.toStdString());
 
                 setAvatar(QImage::fromData(cache::client()->image(info_.avatar_url)));
         } catch (const lmdb::error &e) {
@@ -75,13 +74,67 @@ RoomSettings::RoomSettings(const QString &room_id, QWidget *parent)
         notifOptionLayout_->addWidget(notifLabel);
         notifOptionLayout_->addWidget(notifCombo, 0, Qt::AlignBottom | Qt::AlignRight);
 
+        auto accessOptionLayout = new QHBoxLayout();
+        accessOptionLayout->setMargin(5);
+        auto accessLabel = new QLabel(tr("Room access"), this);
+        accessCombo = new QComboBox(this);
+        accessCombo->addItem(tr("Anyone and guests"));
+        accessCombo->addItem(tr("Anyone"));
+        accessCombo->addItem(tr("Invited users"));
+        accessCombo->setDisabled(true);
+        accessLabel->setStyleSheet("font-size: 15px;");
+
+        if(info_.join_rule == JoinRule::Public)
+        {
+                if(info_.guest_access)
+                {
+                        accessCombo->setCurrentIndex(0);
+                }
+                else
+                {
+                        accessCombo->setCurrentIndex(1);
+                }
+        }
+        else
+        {
+                accessCombo->setCurrentIndex(2);
+        }
+
+        accessOptionLayout->addWidget(accessLabel);
+        accessOptionLayout->addWidget(accessCombo);
+
         layout->addWidget(new TopSection(info_, avatarImg_, this));
         layout->addLayout(notifOptionLayout_);
         layout->addLayout(notifOptionLayout_);
+        layout->addLayout(accessOptionLayout);
         layout->addLayout(btnLayout);
 
         connect(cancelBtn_, &FlatButton::clicked, this, &RoomSettings::closing);
-        connect(saveBtn_, &FlatButton::clicked, this, [this]() { emit closing(); });
+        connect(saveBtn_, &FlatButton::clicked, this, &RoomSettings::save_and_close);
+}
+
+void
+RoomSettings::save_and_close() {
+        // TODO: Save access changes to the room
+        if (accessCombo->currentIndex()<2) {
+                if(info_.join_rule != JoinRule::Public) {
+                        // Make join_rule Public
+                }
+                if(accessCombo->currentIndex()==0) {
+                        if(!info_.guest_access) {
+                                // Make guest_access CanJoin
+                        }
+                }
+        }
+        else {
+                if(info_.join_rule != JoinRule::Invite) {
+                        // Make join_rule invite
+                }
+                if(info_.guest_access) {
+                        // Make guest_access forbidden
+                }
+        }
+        closing();
 }
 
 void