matrixion/src/RoomState.cc

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2017-04-06 02:06:42 +03:00
/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QDebug>
#include <QJsonArray>
#include <QJsonObject>
#include <QSettings>
#include "RoomState.h"
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RoomState::RoomState(const mtx::responses::Timeline &timeline)
{
updateFromEvents(timeline.events);
}
RoomState::RoomState(const mtx::responses::State &state) { updateFromEvents(state.events); }
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void
RoomState::resolveName()
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{
name_ = "Empty Room";
userAvatar_.clear();
if (!name.content.name.empty()) {
name_ = QString::fromStdString(name.content.name).simplified();
return;
}
if (!canonical_alias.content.alias.empty()) {
name_ = QString::fromStdString(canonical_alias.content.alias).simplified();
return;
}
// FIXME: Doesn't follow the spec guidelines.
if (aliases.content.aliases.size() != 0) {
name_ = QString::fromStdString(aliases.content.aliases[0]).simplified();
return;
}
QSettings settings;
auto user_id = settings.value("auth/user_id");
// TODO: Display names should be sorted alphabetically.
for (const auto membership : memberships) {
const auto stateKey = QString::fromStdString(membership.second.state_key);
if (stateKey == user_id)
continue;
if (membership.second.content.membership == mtx::events::state::Membership::Join) {
userAvatar_ = stateKey;
auto displayName =
QString::fromStdString(membership.second.content.display_name);
if (displayName.isEmpty())
name_ = stateKey;
else
name_ = displayName;
break;
}
}
// TODO: pluralization
if (memberships.size() > 2)
name_ = QString("%1 and %2 others").arg(name_).arg(memberships.size());
}
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void
RoomState::resolveAvatar()
{
if (userAvatar_.isEmpty()) {
avatar_ = QString::fromStdString(avatar.content.url);
return;
}
if (memberships.count(userAvatar_.toStdString()) != 0) {
avatar_ =
QString::fromStdString(memberships[userAvatar_.toStdString()].content.avatar_url);
} else {
qWarning() << "Setting room avatar from unknown user id" << userAvatar_;
}
}
// Should be used only after initial sync.
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void
RoomState::removeLeaveMemberships()
{
for (auto it = memberships.cbegin(); it != memberships.cend();) {
if (it->second.content.membership == mtx::events::state::Membership::Leave) {
it = memberships.erase(it);
} else {
++it;
}
}
}
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void
RoomState::update(const RoomState &state)
{
bool needsNameCalculation = false;
bool needsAvatarCalculation = false;
if (aliases.event_id != state.aliases.event_id)
aliases = state.aliases;
if (avatar.event_id != state.avatar.event_id) {
avatar = state.avatar;
needsAvatarCalculation = true;
}
if (canonical_alias.event_id != state.canonical_alias.event_id) {
canonical_alias = state.canonical_alias;
needsNameCalculation = true;
}
if (create.event_id != state.create.event_id)
create = state.create;
if (history_visibility.event_id != state.history_visibility.event_id)
history_visibility = state.history_visibility;
if (join_rules.event_id != state.join_rules.event_id)
join_rules = state.join_rules;
if (name.event_id != state.name.event_id) {
name = state.name;
needsNameCalculation = true;
}
if (power_levels.event_id != state.power_levels.event_id)
power_levels = state.power_levels;
if (topic.event_id != state.topic.event_id)
topic = state.topic;
for (auto it = state.memberships.cbegin(); it != state.memberships.cend(); ++it) {
auto membershipState = it->second.content.membership;
if (it->first == userAvatar_.toStdString()) {
needsNameCalculation = true;
needsAvatarCalculation = true;
}
if (membershipState == mtx::events::state::Membership::Leave)
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this->memberships.erase(it->first);
else
this->memberships.emplace(it->first, it->second);
}
if (needsNameCalculation)
resolveName();
if (needsAvatarCalculation)
resolveAvatar();
}
std::string
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RoomState::serialize() const
{
nlohmann::json obj;
if (!aliases.event_id.empty())
obj["aliases"] = aliases;
if (!avatar.event_id.empty())
obj["avatar"] = avatar;
if (!canonical_alias.event_id.empty())
obj["canonical_alias"] = canonical_alias;
if (!create.event_id.empty())
obj["create"] = create;
if (!history_visibility.event_id.empty())
obj["history_visibility"] = history_visibility;
if (!join_rules.event_id.empty())
obj["join_rules"] = join_rules;
if (!name.event_id.empty())
obj["name"] = name;
if (!power_levels.event_id.empty())
obj["power_levels"] = power_levels;
if (!topic.event_id.empty())
obj["topic"] = topic;
return obj.dump();
}
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void
RoomState::parse(const nlohmann::json &object)
{
if (object.count("aliases") != 0) {
try {
aliases = object.at("aliases")
.get<mtx::events::StateEvent<mtx::events::state::Aliases>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - aliases" << e.what();
}
}
if (object.count("avatar") != 0) {
try {
avatar = object.at("avatar")
.get<mtx::events::StateEvent<mtx::events::state::Avatar>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - avatar" << e.what();
}
}
if (object.count("canonical_alias") != 0) {
try {
canonical_alias =
object.at("canonical_alias")
.get<mtx::events::StateEvent<mtx::events::state::CanonicalAlias>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - canonical_alias" << e.what();
}
}
if (object.count("create") != 0) {
try {
create = object.at("create")
.get<mtx::events::StateEvent<mtx::events::state::Create>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - create" << e.what();
}
}
if (object.count("history_visibility") != 0) {
try {
history_visibility =
object.at("history_visibility")
.get<mtx::events::StateEvent<mtx::events::state::HistoryVisibility>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - history_visibility" << e.what();
}
}
if (object.count("join_rules") != 0) {
try {
join_rules =
object.at("join_rules")
.get<mtx::events::StateEvent<mtx::events::state::JoinRules>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - join_rules" << e.what();
}
}
if (object.count("name") != 0) {
try {
name = object.at("name")
.get<mtx::events::StateEvent<mtx::events::state::Name>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - name" << e.what();
}
}
if (object.count("power_levels") != 0) {
try {
power_levels =
object.at("power_levels")
.get<mtx::events::StateEvent<mtx::events::state::PowerLevels>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - power_levels" << e.what();
}
}
if (object.count("topic") != 0) {
try {
topic = object.at("topic")
.get<mtx::events::StateEvent<mtx::events::state::Topic>>();
} catch (std::exception &e) {
qWarning() << "RoomState::parse - topic" << e.what();
}
}
}