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#include "../include/dchat/Room.hpp"
#include "../include/dchat/Cache.hpp"
#include "../include/dchat/RoomDataType.hpp"
#include <odhtdb/Database.hpp>
#include <odhtdb/Log.hpp>
#include <sibs/SafeSerializer.hpp>
#include <thread>
// TODO: Remove error checks when odhtdb has been improved to take care of such errors
namespace dchat
{
Room::Room(std::shared_ptr<odhtdb::Database> _database, std::shared_ptr<odhtdb::Hash> _id, std::shared_ptr<odhtdb::OwnedByteArray> _encryptionKey) :
database(_database),
id(_id),
encryptionKey(_encryptionKey),
userdata(nullptr)
{
}
std::shared_ptr<User> Room::addUser(const odhtdb::Signature::PublicKey &userPublicKey, const odhtdb::DataView groupId)
{
auto it = userByPublicKey.find(userPublicKey);
if(it != userByPublicKey.end())
{
odhtdb::Log::error("The user %s already exists in the room %s", userPublicKey.toString().c_str(), id->toString().c_str());
assert(false);
return nullptr;
}
auto user = std::make_shared<User>(userPublicKey);
userByPublicKey[userPublicKey] = user;
return user;
}
std::shared_ptr<User> Room::getUserByPublicKey(const odhtdb::Signature::PublicKey &userPublicKey)
{
auto userIt = userByPublicKey.find(userPublicKey);
if(userIt != userByPublicKey.end())
return userIt->second;
return nullptr;
}
void Room::publishMessage(const std::string &msg)
{
sibs::SafeSerializer serializer;
serializer.add(RoomDataType::ADD_MESSAGE);
serializer.add((const u8*)msg.data(), msg.size());
auto &keyPair = publicKeyToKeyPairMap[localUser->publicKey];
odhtdb::DatabaseNode roomNode(encryptionKey, id);
database->addData(roomNode, *keyPair, { serializer.getBuffer().data(), serializer.getSize() });
}
Rooms::Rooms(const char *address, u16 port, RoomCallbackFuncs _callbackFuncs) :
callbackFuncs(_callbackFuncs),
loggedIn(false)
{
odhtdb::DatabaseCallbackFuncs databaseCallbackFuncs;
databaseCallbackFuncs.createNodeCallbackFunc = std::bind(&Rooms::createNodeCallbackFunc, this, std::placeholders::_1);
databaseCallbackFuncs.addNodeCallbackFunc = std::bind(&Rooms::addNodeCallbackFunc, this, std::placeholders::_1);
databaseCallbackFuncs.addUserCallbackFunc = std::bind(&Rooms::addUserCallbackFunc, this, std::placeholders::_1);
database = odhtdb::Database::connect(address, port, Cache::getDchatDir(), databaseCallbackFuncs).get();
}
void Rooms::createNodeCallbackFunc(const odhtdb::DatabaseCreateNodeRequest &request)
{
auto roomIt = roomById.find(*request.nodeHash);
if(roomIt != roomById.end())
{
odhtdb::Log::error("Room %s has already been created once", request.nodeHash->toString().c_str());
assert(false);
return;
}
auto encryptionKey = roomEncryptionKey[*request.nodeHash];
auto roomId = std::make_shared<odhtdb::Hash>(*request.nodeHash);
auto room = std::make_shared<Room>(database, roomId, encryptionKey);
roomById[*request.nodeHash] = room;
if(callbackFuncs.createRoomCallbackFunc)
callbackFuncs.createRoomCallbackFunc(room);
auto user = room->addUser(*request.creatorPublicKey, request.groupId);
if(callbackFuncs.addUserCallbackFunc)
callbackFuncs.addUserCallbackFunc(room, user);
}
void Rooms::addNodeCallbackFunc(const odhtdb::DatabaseAddNodeRequest &request)
{
auto roomIt = roomById.find(*request.nodeHash);
if(roomIt == roomById.end())
{
odhtdb::Log::error("Attempting to add data to node %s but the node has not been created", request.nodeHash->toString().c_str());
assert(false);
return;
}
auto room = roomIt->second;
auto user = room->getUserByPublicKey(*request.creatorPublicKey);
if(!user)
{
odhtdb::Log::error("Attempting to add data to node %s but the the user %s doesn't exist in the node %s", request.creatorPublicKey->toString().c_str(), request.nodeHash->toString().c_str());
assert(false);
return;
}
if(request.decryptedData.size == 0)
return;
uint32_t timestampSeconds = ntp::NtpTimestamp::fromCombined(request.timestamp).seconds;
RoomDataType roomDataType = (RoomDataType)static_cast<const char*>(request.decryptedData.data)[0];
try
{
switch(roomDataType)
{
case RoomDataType::ADD_MESSAGE:
{
RoomMessage message;
message.id = *request.requestHash;
message.creator = user;
message.timestampSeconds = timestampSeconds;
message.text = std::string((const char*)request.decryptedData.data + 1, request.decryptedData.size - 1);
RoomAddMessageRequest roomRequest;
roomRequest.room = room;
roomRequest.loadedFromCache = request.loadedFromCache;
roomRequest.message = std::move(message);
if(callbackFuncs.addMessageCallbackFunc)
callbackFuncs.addMessageCallbackFunc(roomRequest);
room->messages.push_back(std::move(roomRequest.message));
break;
}
case RoomDataType::NICKNAME_CHANGE:
{
sibs::SafeDeserializer deserializer((const u8*)request.decryptedData.data + 1, request.decryptedData.size - 1);
u8 nameLength = deserializer.extract<u8>();
if(nameLength > 0)
{
std::string nickname;
nickname.resize(nameLength);
deserializer.extract((u8*)&nickname[0], nameLength);
UserChangeNicknameRequest roomRequest;
roomRequest.room = room;
roomRequest.user = user;
roomRequest.timestampSeconds = timestampSeconds;
roomRequest.loadedFromCache = request.loadedFromCache;
roomRequest.newNickname = nickname;
if(callbackFuncs.userChangeNicknameCallbackFunc)
callbackFuncs.userChangeNicknameCallbackFunc(roomRequest);
user->nickname = std::move(nickname);
}
break;
}
default:
break;
}
}
catch(std::exception &e)
{
odhtdb::Log::warn("Failed to process add node request, reason: %s\n", e.what());
}
}
void Rooms::addUserCallbackFunc(const odhtdb::DatabaseAddUserRequest &request)
{
auto roomIt = roomById.find(*request.nodeHash);
if(roomIt == roomById.end())
{
odhtdb::Log::error("User %s was added to node %s but the node has not been created", request.userToAddPublicKey->toString().c_str(), request.nodeHash->toString().c_str());
assert(false);
return;
}
auto user = roomIt->second->addUser(*request.userToAddPublicKey, request.groupToAddUserTo);
auto localUserIt = roomLocalUser.find(*request.nodeHash);
if(localUserIt != roomLocalUser.end())
{
roomIt->second->localUser = user;
roomIt->second->publicKeyToKeyPairMap[user->publicKey] = localUserIt->second;
}
if(callbackFuncs.addUserCallbackFunc)
callbackFuncs.addUserCallbackFunc(roomIt->second, user);
}
void Rooms::connect(const char *address, u16 port, RoomCallbackFuncs callbackFuncs)
{
assert(callbackFuncs.connectCallbackFunc);
std::thread([](const char *address, u16 port, RoomCallbackFuncs callbackFuncs)
{
try
{
callbackFuncs.connectCallbackFunc(std::shared_ptr<Rooms>(new Rooms(address, port, callbackFuncs)), nullptr);
}
catch(std::exception &e)
{
callbackFuncs.connectCallbackFunc(nullptr, e.what());
}
}, address, port, callbackFuncs).detach();
}
void Rooms::loginUser(const std::string &username, const std::string &password)
{
if(loggedIn)
throw std::runtime_error(std::string("You are already logged in as ") + username);
auto storedNodes = database->getStoredNodeUserInfoDecrypted(username, password);
loggedIn = true;
for(auto &nodeInfo : storedNodes)
{
roomLocalUser[nodeInfo.first] = nodeInfo.second.userKeyPair;
roomEncryptionKey[nodeInfo.first] = nodeInfo.second.nodeEncryptionKey;
database->loadNode(nodeInfo.first);
}
}
void Rooms::registerUser(const std::string &username, const std::string &password)
{
if(loggedIn)
throw std::runtime_error(std::string("You are already logged in as ") + username);
database->storeUserWithoutNodes(username, password);
loggedIn = true;
}
}
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