#include "../include/Channel.hpp"
#include <odhtdb/User.hpp>
#include <odhtdb/Database.hpp>
#include <odhtdb/bin2hex.hpp>
#include <cstring>
#include <sibs/SafeSerializer.hpp>

using namespace std;

namespace dchat
{
    static Channel *currentChannel;
    
    Channel::Channel(const string &_name, const odhtdb::DatabaseNode &_databaseNodeInfo, User *_localUser, odhtdb::Database *_database) : 
        database(_database),
        databaseNodeInfo(_databaseNodeInfo),
        name(_name),
        messageBoard(sf::Vector2u(1.0f, 1.0f)),
        localUser(_localUser ? _localUser : new OfflineUser("You"))
    {
        addUserLocally(localUser);
        {
            Message *message = new Message(&systemUser, u8"hello, worldåäö1![emoji](https://discordemoji.com/assets/emoji/playtime.png)");
            messageBoard.addMessage(message);
        }
        
        {
            Message *message = new Message(&systemUser, u8"hello, world2![emoji](https://discordemoji.com/assets/emoji/Feels3DMan.gif)");
            messageBoard.addMessage(message);
        }
        
        {
            Message *message = new Message(&systemUser, u8"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.");
            messageBoard.addMessage(message);
        }
        
        {
            Message *message = new Message(&systemUser, u8"Lorem ipsumdolorsitamet,consecteturadipiscingelit,seddoeiusmodtemporincididuntutaboreetdoloremagnaaliqua.Utenimadminimveniam");
            messageBoard.addMessage(message);
        }
        
        {
            Message *message = new Message(&systemUser, u8"xddd");
            messageBoard.addMessage(message);
        }
        
        {
            Message *message = new Message(&systemUser, u8"[emoji](https://discordemoji.com/assets/emoji/PepeDab.gif)[emoji](https://cdn.discordapp.com/emojis/398569871761473538.png?v=1)");
            messageBoard.addMessage(message);
        }
        
        {
            Message *message = new Message(&systemUser, u8"Message after big emoji");
            messageBoard.addMessage(message);
        }
        
        if(database)
            database->seed(databaseNodeInfo);
    }
    
    Channel::~Channel()
    {
        if(database)
            database->stopSeeding(*databaseNodeInfo.getRequestHash());
        
        for(User *user : users)
        {
            delete user;
        }
    }
    
    User* Channel::getLocalUser()
    {
        return localUser;
    }
    
    SystemUser* Channel::getSystemUser()
    {
        return &systemUser;
    }
    
    MessageBoard& Channel::getMessageBoard()
    {
        return messageBoard;
    }
    
    const string& Channel::getName() const
    {
        return name;
    }
    
    const vector<User*> Channel::getUsers() const
    {
        return users;
    }
    
    OnlineUser* Channel::getUserByPublicKey(const odhtdb::Signature::PublicKey &publicKey)
    {
        auto userIt = publicKeyOnlineUsersMap.find(publicKey);
        if(userIt != publicKeyOnlineUsersMap.end())
            return userIt->second;
        return nullptr;
    }
    
    const odhtdb::DatabaseNode& Channel::getNodeInfo() const
    {
        return databaseNodeInfo;
    }
    
    void Channel::addLocalMessage(const std::string &msg, User *owner, u64 timestampSeconds)
    {
        assert(owner);
        messageBoard.addMessage(new Message(owner, msg, timestampSeconds));
    }
    
    void Channel::addMessage(const std::string &msg)
    {
        if(database && localUser->type == User::Type::ONLINE)
        {
            auto localOnlineUser = static_cast<OnlineUser*>(localUser);
            assert(localOnlineUser->databaseUser->getType() == odhtdb::User::Type::LOCAL);
            
            sibs::SafeSerializer serializer;
            serializer.add(ChannelDataType::MESSAGE);
            serializer.add((const u8*)msg.data(), msg.size());
            
            database->addData(databaseNodeInfo, static_cast<const odhtdb::LocalUser*>(localOnlineUser->databaseUser), odhtdb::DataView(serializer.getBuffer().data(), serializer.getBuffer().size()));
            database->commit();
        }
        else
            addLocalMessage(msg, localUser, 0);
    }
    
    void Channel::addUserLocally(User *user)
    {
        users.push_back(user);
        if(user->type == User::Type::ONLINE)
        {
            auto onlineUser = static_cast<OnlineUser*>(user);
            publicKeyOnlineUsersMap[onlineUser->databaseUser->getPublicKey()] = onlineUser;
        }
    }
    
    bool Channel::addUser(const odhtdb::Signature::PublicKey &userId, const string &groupId)
    {
        assert(database);
        if(!database || localUser->type != User::Type::ONLINE)
            return false;
        
        if(groupId.size() != odhtdb::GROUP_ID_LENGTH)
        {
            fprintf(stderr, "Group id is wrong size. Expected to be %u bytes, was %u byte(s)\n", odhtdb::GROUP_ID_LENGTH, groupId.size());
            return false;
        }
        
        auto localOnlineUser = static_cast<OnlineUser*>(localUser);
        assert(localOnlineUser->databaseUser->getType() == odhtdb::User::Type::LOCAL);
        
        uint8_t groupIdRaw[odhtdb::GROUP_ID_LENGTH];
        memcpy(groupIdRaw, groupId.data(), groupId.size());
        auto groupToAddUserTo = database->getStorage().getGroupById(*databaseNodeInfo.getRequestHash(), groupIdRaw);
        if(!groupToAddUserTo)
        {
            fprintf(stderr, "Group with id %s does not exist in channel %s\n", odhtdb::bin2hex(groupId.c_str(), groupId.size()).c_str(), databaseNodeInfo.getRequestHash()->toString().c_str());
            return false;
        }
        database->addUser(databaseNodeInfo, static_cast<const odhtdb::LocalUser*>(localOnlineUser->databaseUser), "noname", userId, groupToAddUserTo);
        return true;
    }
    
    void Channel::replaceLocalUser(User *newLocalUser)
    {
        for(vector<User*>::iterator it = users.begin(); it != users.end(); ++it)
        {
            if(*it == localUser)
            {
                users.erase(it);
                delete localUser;
                break;
            }
        }
        
        localUser = newLocalUser;
        addUserLocally(newLocalUser);
    }
    
    void Channel::changeNick(const std::string &newNick)
    {
        if(database && localUser->type == User::Type::ONLINE)
        {
            auto localOnlineUser = static_cast<OnlineUser*>(localUser);
            assert(localOnlineUser->databaseUser->getType() == odhtdb::User::Type::LOCAL);
            
            sibs::SafeSerializer serializer;
            serializer.add(ChannelDataType::NICKNAME_CHANGE);
            serializer.add((u8)newNick.size());
            serializer.add((const u8*)newNick.data(), newNick.size());
            
            database->addData(databaseNodeInfo, static_cast<const odhtdb::LocalUser*>(localOnlineUser->databaseUser), odhtdb::DataView(serializer.getBuffer().data(), serializer.getBuffer().size()));
            database->commit();
        }
    }
    
    void Channel::processEvent(const sf::Event &event)
    {
        chatbar.processEvent(event, this);
        messageBoard.processEvent(event);
    }
    
    void Channel::draw(sf::RenderWindow &window, Cache &cache)
    {
        messageBoard.draw(window, cache);
        chatbar.draw(window);
    }
    
    void Channel::setCurrent(Channel *channel)
    {
        currentChannel = channel;
    }
    
    Channel* Channel::getCurrent()
    {
        return currentChannel;
    }
}