#include "../include/RoomSidePanel.hpp"
#include "../include/UsersSidePanel.hpp"
#include "../include/RoomTopPanel.hpp"
#include "../include/ResourceCache.hpp"
#include "../include/Video.hpp"
#include "../include/Command.hpp"
#include "../include/Settings.hpp"
#include "../include/ColorScheme.hpp"
#include "../include/GlobalContextMenu.hpp"
#include "../include/ImagePreview.hpp"
#include "../include/Room.hpp"
#include "../include/RoomContainer.hpp"
#include <sstream>
#include <string>
#include <SFML/Graphics.hpp>
#include <cstring>
#include <boost/filesystem.hpp>
#include <dchat/Room.hpp>
#include <dchat/Process.hpp>
#include <X11/Xlib.h>
#include <math.h>

using namespace std;
using namespace dchat;

static bool focused = true;
static bool windowFocused = true;

static bool looksLikeUrl(const string &str)
{
    if(str.find('.') == string::npos)
        return false;
    
    if(str.size() >= 7 && strncmp(str.c_str(), "http://", 7) == 0)
        return true;
    
    if(str.size() >= 8 && strncmp(str.c_str(), "https://", 8) == 0)
        return true;

    if(str.size() >= 4 && strncmp(str.c_str(), "www.", 4) == 0)
        return true;
    
    return false;
}


int main(int argc, char **argv)
{
    if(argc > 1)
    {    
        boost::filesystem::path resourcesPath(argv[1]);
        boost::filesystem::current_path(resourcesPath);
        printf("Resource path set to: %s\n", resourcesPath.string().c_str());
    }
    else
        printf("Resource directory not defined, using current directory\n");
    
    const sf::Int64 FRAMERATE_FOCUSED = 144;
    const sf::Int64 FRAMERATE_NOT_FOCUSED = 10;
    
    XInitThreads();
    sf::RenderWindow window(sf::VideoMode(1280, 768), "dchat");
    window.setVerticalSyncEnabled(false);
    window.setFramerateLimit(FRAMERATE_FOCUSED);
    
    //Video video(500, 500, "https://www.youtube.com/watch?v=bs0-EX9mJmg");
    
    //Channel offlineChannel("Offline");
    //ChannelSidePanel::addChannel(&offlineChannel);
    //Channel::setCurrent(&offlineChannel);
    
    recursive_mutex channelMessageMutex;
    sf::Clock lastFocusedTimer;

    const char *bootstrapNode = "31.208.83.179";

    std::shared_ptr<Room> offlineRoom = nullptr;

    auto addSystemMessage = [&lastFocusedTimer](const std::string &msg, bool plainText = true)
    {
        auto currentRoom = getCurrentRoom();
        if(currentRoom && currentRoom->userdata)
        {
            auto *roomContainer = static_cast<RoomContainer*>(currentRoom->userdata);
            roomContainer->messageBoard.addSystemUserMessage(msg, plainText);
        }
        lastFocusedTimer.restart();
    };
    
    RoomCallbackFuncs roomCallbackFuncs;
    roomCallbackFuncs.connectCallbackFunc = [bootstrapNode, &channelMessageMutex, &offlineRoom, &lastFocusedTimer, &addSystemMessage](std::shared_ptr<Rooms> rooms, const char *errMsg)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        if(rooms)
        {
            std::string msg = "Connected to ";
            msg += bootstrapNode;
            msg += ":27130";
            fprintf(stderr, "%s\n", msg.c_str());
            setRooms(rooms);
            auto emptyId = make_shared<odhtdb::Hash>();
            offlineRoom = make_shared<Room>(rooms.get(), emptyId);
            offlineRoom->name = "Offline";
            auto *roomContainer = new RoomContainer(nullptr);
            roomContainer->offlineRoom = true;
            offlineRoom->userdata = roomContainer;
            setCurrentRoom(offlineRoom);

            string commandsMsg = "Available commands: ";
            for(const auto &commandIt : Command::getCommands())
            {
                commandsMsg += "\n/";
                commandsMsg += commandIt.first;
            }
            addSystemMessage(commandsMsg);
        }
        else
        {
            std::string errMsgToShow = "Failed to connect to boostrap node, reason: ";
            errMsgToShow += (errMsg ? errMsg : "unknown");
            fprintf(stderr, "%s\n", errMsgToShow.c_str());
        }
        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.createRoomCallbackFunc = [&channelMessageMutex, &lastFocusedTimer](std::shared_ptr<Room> room)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        // TODO: Update side panel
        //RoomSidePanel::addRoom(room);
        room->userdata = new RoomContainer(room);
        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.addUserCallbackFunc = [&channelMessageMutex, &lastFocusedTimer](const RoomAddUserRequest &request)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        // TODO: Update users side panel
        //chatWindow.addUser(request);
        if(request.waitedToJoin)
            fprintf(stderr, "Waited to join. We were added to room by %s\n", request.addedByUser->publicKey.toString().c_str());
        request.user->nickname = "Anonymous";
        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.addMessageCallbackFunc = [&channelMessageMutex, &lastFocusedTimer](const RoomAddMessageRequest &request)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        assert(request.room->userdata);
        auto *roomContainer = static_cast<RoomContainer*>(request.room->userdata);
        Message *message = new Message(request.message, false);
        roomContainer->messageBoard.addMessage(message);

        // Show notification if the message is new and  window is not focused and the message was sent not sent by us
        if(!request.loadedFromCache && !windowFocused)
        {
            // TODO: Should this be done?
            #if 0
            if(!request.prevMessage || request.message->timestampSeconds >= request.prevMessage->timestampSeconds)
            {

            }
            #endif
            if(request.room->localUser && request.room->localUser != request.message->creator)
            {
                string cmd = "notify-send dchat '";
                cmd += escapeCommand(request.message->text);
                cmd += "'";
                system(cmd.c_str());
            }
        }

        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.userChangeNicknameCallbackFunc = [&channelMessageMutex, &lastFocusedTimer](const UserChangeNicknameRequest &request)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        // TODO: Update panels
        //chatWindow.setUserNickname(request);
        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.userChangeAvatarCallbackFunc = [&channelMessageMutex, &lastFocusedTimer](const UserChangeAvatarRequest &request)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        // TODO: Update panels
        //chatWindow.setUserAvatar(request);
        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.changeRoomNameCallbackFunc = [&channelMessageMutex, &lastFocusedTimer](const RoomChangeNameRequest &request)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        // TODO: Update panels
        //chatWindow.changeRoomName(request);
        lastFocusedTimer.restart();
    };
    roomCallbackFuncs.receiveInviteUserCallbackFunc = [&channelMessageMutex](const InviteUserRequest &request)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        // TODO: Add invite to a list which we can accept the user from
        //chatWindow.addInviteRequest(request);
        // For now automatically add user to the room
        fprintf(stderr, "User invite request message: %s\n", request.message.c_str());
        assert(!request.room->localUser->groups.empty());
        // TODO: Add user to guest group. Right now we are adding the user to our group, which in this case is the admin group...
        try
        {
            request.room->addUser(request.userPublicKey, request.room->localUser->groups[0]);
            fprintf(stderr, "Successfully added user %s to our group\n", request.userPublicKey.toString().c_str());
        }
        catch(odhtdb::PermissionDeniedException &e)
        {
            fprintf(stderr, "Failed to add user %s to our group, reason: %s\n", request.userPublicKey.toString().c_str(), e.what());
        }
    };
    
    // Login to account
    Command::add("login", [&channelMessageMutex](const vector<string> &args)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        if(args.size() != 2)
        {
            fprintf(stderr, "Expected 2 arguments for command login (username and password), got %u argument(s)\n", args.size());
            return;
        }

        auto rooms = getRooms();
        if(!rooms)
            return;
        
        try
        {
            rooms->loginUser(args[0], args[1]);
            printf("Successfully logged into user %s\n", args[0].c_str());
        }
        catch(std::exception &e)
        {
            fprintf(stderr, "Failed to login to user %s, reason: %s\n", args[0].c_str(), e.what());
        }
    });
    
    // Register account
    Command::add("register", [&channelMessageMutex](const vector<string> &args)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        if(args.size() != 2)
        {
            fprintf(stderr, "Expected 2 arguments for command register (username and password), got %u argument(s)\n", args.size());
            return;
        }

        auto rooms = getRooms();
        if(!rooms)
            return;
        
        try
        {
            rooms->registerUser(args[0], args[1]);
            printf("Successfully registered user %s\n", args[0].c_str());
        }
        catch(odhtdb::SqlExecException &e)
        {
            fprintf(stderr, "Failed to register user %s, reason: %s", args[0].c_str(), e.what());
            return;
        }
    });
    
    // TODO: Use database->addData to change channel name
    // Create channel
    Command::add("cc", [&channelMessageMutex, &lastFocusedTimer](const vector<string> &args)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        if(args.size() != 1)
        {
            fprintf(stderr, "Expected 1 argument for command cc (channel name), got %u argument(s)\n", args.size());
            return;
        }

        auto rooms = getRooms();
        if(!rooms)
            return;
        
        if(!rooms->isLoggedIn())
        {
            fprintf(stderr, "You are not logged in. Please login before creating a room\n");
            return;
        }
        
        try
        {
            rooms->createRoom(args[0]);
            printf("Successfully created room %s\n", args[0].c_str());
            lastFocusedTimer.restart();
        }
        catch(std::exception &e)
        {
            fprintf(stderr, "Failed to create room %s, reason: %s\n", args[0].c_str(), e.what());
        }
    });
    
    // Get invite key
    Command::add("invitekey", [&channelMessageMutex, &addSystemMessage](const vector<string> &args)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        if(args.size() != 0)
        {
            fprintf(stderr, "Expected 0 arguments for command invitekey, got %u argument(s)\n", args.size());
            return;
        }
        
        auto currentRoom = getCurrentRoom();
        if(!currentRoom || static_cast<RoomContainer*>(currentRoom->userdata)->offlineRoom || currentRoom->inviteKey.empty())
        {
            fprintf(stderr, "You need to be in a room to get the invite key\n");
            return;
        }

        std::string msg = "Invite key: ";
        msg += currentRoom->inviteKey;
        addSystemMessage(msg);
        fprintf(stderr, "%s\n", msg.c_str());
    });
    
    // Join channel using invite key
    Command::add("jc", [&channelMessageMutex](const vector<string> &args)
    {
        lock_guard<recursive_mutex> lock(channelMessageMutex);
        if(args.size() != 2)
        {
            fprintf(stderr, "Expected 2 arguments for command jc (channel join key and message), got %u argument(s)\n", args.size());
            return;
        }
        
        auto rooms = getRooms();
        if(!rooms)
            return;
        
        if(!rooms->isLoggedIn())
        {
            fprintf(stderr, "You are not logged in. Please login before joining a room\n");
            return;
        }

        try
        {
            if(rooms->requestJoinRoom(args[0], args[1]))
                fprintf(stderr, "No error while joining room. Waiting to be added...");
        }
        catch(std::exception &e)
        {
            fprintf(stderr, "Failed to join room %s, reason: %s", args[0].c_str(), e.what());
        }
    });

    // Scale UI
    Command::add("scale", [](const vector<string> &args)
    {
        if(args.size() != 1)
        {
            fprintf(stderr, "Expected 1 argument for command scale, got %u argument(s)\n", args.size());
            return;
        }
        
        float scaling = stof(args[0]);
        Settings::setScaling(scaling);
        printf("UI scaling set to %f\n", scaling);
    });
    
    Command::add("addbind", [addSystemMessage](const vector<string> &args)
    {
        if(args.size() != 2)
        {
            string errMsg = "Expected 2 arguments for command addbind, got ";
            errMsg += to_string(args.size());
            errMsg += " argument(s)";
            addSystemMessage(errMsg);
            return;
        }
        
        string key = ":";
        key += args[0];
        key += ":";
        
        if(key.size() > 255)
        {
            // 253 = bind + two colons
            addSystemMessage("Bind is too long. Max size is 253 bytes");
            return;
        }
        
        bool bindAdded = Chatbar::addBind(key, args[1]);
        if(bindAdded)
            addSystemMessage("Bind added");
        else
            addSystemMessage("Bind already exists. Remove it first if you want to replace it");
    });
    
    Command::add("removebind", [addSystemMessage](const vector<string> &args)
    {
        if(args.size() != 1)
        {
            string errMsg = "Expected 1 argument for command removebind, got ";
            errMsg += to_string(args.size());
            errMsg += " argument(s)";
            addSystemMessage(errMsg);
            return;
        }
        
        string key = ":";
        key += args[0];
        key += ":";
        
        if(key.size() > 255)
        {
            // 253 = bind + two colons
            addSystemMessage("Bind is too long. Max size is 253 bytes");
            return;
        }
        
        bool bindRemoved = Chatbar::removeBind(key);
        if(bindRemoved)
            addSystemMessage("Bind removed");
        else
            addSystemMessage("Bind doesn't exist, nothing was removed");
    });
    
    Command::add("binds", [addSystemMessage](const vector<string> &args)
    {
        if(args.size() != 0)
        {
            string errMsg = "Expected 0 arguments for command removebind, got ";
            errMsg += to_string(args.size());
            errMsg += " argument(s)";
            addSystemMessage(errMsg);
            return;
        }
        
        string msg = "Binds:";
        auto binds = Chatbar::getBinds();
        for(auto &bind : binds)
        {
            msg += "\n";
            msg += bind.first;
            msg += " ";
            msg += bind.second;
        }
        addSystemMessage(msg, false);
    });
    
    // Change nick of current user in current room
    Command::add("nick", [addSystemMessage](const vector<string> &args)
    {
        if(args.size() != 1)
        {
            string errMsg = "Expected 1 argument for command nick, got ";
            errMsg += to_string(args.size());
            errMsg += " argument(s)";
            addSystemMessage(errMsg);
            return;
        }

        auto currentRoom = getCurrentRoom();
        if(!currentRoom || static_cast<RoomContainer*>(currentRoom->userdata)->offlineRoom)
        {
            fprintf(stderr, "You need to be in a room to change your name\n");
            return;
        }
        
        if(args[0].size() == 0 || args[0].size() > 255)
        {
            addSystemMessage("Invalid nickname. Nickname has to be between 1 and 255 characters");
            return;
        }
        
        currentRoom->setUserNickname(args[0]);
        string msg = "Your nickname was changed to ";
        msg += args[0];
        addSystemMessage(msg);
    });
    
    // Change avatar of current user in current channel
    Command::add("avatar", [addSystemMessage](const vector<string> &args)
    {
        if(args.size() != 1)
        {
            string errMsg = "Expected 1 argument for command avatar, got ";
            errMsg += to_string(args.size());
            errMsg += " argument(s)";
            addSystemMessage(errMsg);
            return;
        }
        
        auto currentRoom = getCurrentRoom();
        if(!currentRoom || static_cast<RoomContainer*>(currentRoom->userdata)->offlineRoom)
        {
            fprintf(stderr, "You need to be in a room to change your avatar\n");
            return;
        }
        
        if(args[0].size() < 10 || args[0].size() > 512)
        {
            addSystemMessage("Invalid avatar url size, expected to be between 10 and 512 bytes");
            return;
        }
        
        if(looksLikeUrl(args[0]))
        {
            currentRoom->setAvatarUrl(args[0]);
            addSystemMessage("Your avatar has been changed (Note: max avatar size is 1 Mb, if your avatar is larger then it will not be visible)");
        }
        else
        {
            addSystemMessage("Avatar url needs to start with either http://, https:// or www.");
        }
    });
    
    // Change name of the current room
    Command::add("roomname", [addSystemMessage](const vector<string> &args)
    {
        if(args.size() != 1)
        {
            string errMsg = "Expected 1 argument for command roomname, got ";
            errMsg += to_string(args.size());
            errMsg += " argument(s)";
            addSystemMessage(errMsg);
            return;
        }

        auto currentRoom = getCurrentRoom();
        if(!currentRoom || static_cast<RoomContainer*>(currentRoom->userdata)->offlineRoom)
        {
            fprintf(stderr, "You can't change room name size you are not in a room\n");
            return;
        }
        
        if(args[0].size() == 0 || args[0].size() > 32)
        {
            addSystemMessage("Channel name has to be between 1 and 32 bytes long");
            return;
        }
        
        currentRoom->setName(args[0]);
        string msg = "Channel name has been changed to ";
        msg += args[0];
        addSystemMessage(msg);
    });
    
    //Command::add("clearcache", [](const vector<string> &args)
    //{
    //    printf("Cleared cache (%d bytes)\n", database->clearCache());
    //});
    
    bool running = true;
    Cache *cache = ResourceCache::getCache();
    Rooms::connect(bootstrapNode, 27130, roomCallbackFuncs);
    Chatbar::loadBindsFromFile();

    while (running)
    {
        std::shared_ptr<Room> currentRoom = getCurrentRoom();
        
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
            {
                window.close();
                running = false;
            }
            else if(event.type == sf::Event::Resized)
            {
                sf::FloatRect viewRect(0.0f, 0.0f, event.size.width, event.size.height);
                /* // TODO: Use xlib/xcb to set window minimum size instead
                const int minWidth = 800;
                if(event.size.width < minWidth)
                {
                    viewRect.width = minWidth;
                    window.setSize(sf::Vector2u(minWidth, event.size.height));
                }
                */
                sf::View view(viewRect);
                window.setView(view);
            }
            else if(event.type == sf::Event::MouseEntered)
                window.setFramerateLimit(FRAMERATE_FOCUSED);
            //else if(event.type == sf::Event::MouseLeft)
            //    window.setFramerateLimit(FRAMERATE_NOT_FOCUSED);
            
            if(event.type == sf::Event::GainedFocus)
                windowFocused = true;
            else if(event.type == sf::Event::LostFocus)
                windowFocused = false;
            
            if(event.type == sf::Event::MouseEntered)
                focused = true;
            else if(event.type == sf::Event::MouseLeft)
                focused = false;
            
            if(focused)
            {
                ImagePreview::processEvent(event);
            }
            
            if(!ImagePreview::getPreviewContentPtr() && ImagePreview::getTimeSinceLastSeenMs() > 250)
            {
                lock_guard<recursive_mutex> lock(channelMessageMutex);
                GlobalContextMenu::processEvent(event);
                if(currentRoom && currentRoom->userdata) {
                    auto *roomContainer = static_cast<RoomContainer*>(currentRoom->userdata);
                    roomContainer->processEvent(event, cache);
                }
            }
            
            lastFocusedTimer.restart();
        }
        
        //for(Channel *channel : channels)
       // {
       //     channel->update();
       // }

        if((!windowFocused || !focused) && lastFocusedTimer.getElapsedTime().asMilliseconds() > 5000)
        {
            this_thread::sleep_for(chrono::milliseconds(250));
            continue;
        }
        
        window.clear(ColorScheme::getBackgroundColor());
        {
            lock_guard<recursive_mutex> lock(channelMessageMutex);
            RoomSidePanel::draw(window);
            if(currentRoom && currentRoom->userdata) {
                auto *roomContainer = static_cast<RoomContainer*>(currentRoom->userdata);
                roomContainer->draw(window, cache);
            }
            UsersSidePanel::draw(window, cache);
            RoomTopPanel::draw(window);
            GlobalContextMenu::draw(window);
            ImagePreview::draw(window);
        }
        
        //video.draw(window);
        window.display();
    }
    
    // We need to wait until our `ping` packet for disconnecting is sent to all channels
    //printf("Shutting down...\n");
    //this_thread::sleep_for(chrono::seconds(3));

    return 0;
}