//
// Created by Иван Ильин on 22.09.2021.
//

#include "Shooter.h"
#include <fstream>
#include <utility>
#include "engine/animation/AColor.h"
#include "engine/animation/AFunction.h"
#include "engine/animation/ARotate.h"
#include "engine/animation/Timeline.h"
#include "ShooterConsts.h"
#include "engine/SoundController.h"
#include "engine/animation/ATranslateToPoint.h"

using namespace std;

// Read server/client settings and start both.
// If client doesn't connect to the localhost - server doesn't start.
void Shooter::InitNetwork() {
    std::string clientIp;
    sf::Uint16 clientPort;
    sf::Uint16 serverPort;
    std::string playerName;
    std::ifstream connectFile("connect.txt", std::ifstream::in);

    // If failed to read client settings
    if (!connectFile.is_open() || !(connectFile >> clientIp >> clientPort >> playerName) || sf::IpAddress(clientIp) == sf::IpAddress::None)
    {
        connectFile.close();
        // Create file and write default settings
        clientIp = "127.0.0.1";
        clientPort = 54000;
        playerName = "PlayerName";
        std::ofstream temp("connect.txt", std::ofstream::out);
        temp << clientIp << std::endl << clientPort << std::endl << playerName;
        temp.close();
    }
    connectFile.close();

    // If failed to read server settings
    connectFile.open("server.txt", std::ifstream::in);
    if (!connectFile.is_open() || !(connectFile >> serverPort))
    {
        connectFile.close();
        // Create file and write default settings
        serverPort = 54000;
        std::ofstream temp("server.txt", std::ofstream::out);
        temp << serverPort;
        temp.close();
    }
    connectFile.close();

    if (clientIp == sf::IpAddress::LocalHost) {
        server->start(serverPort);
        if(server->isWorking())
            server->generateBonuses();
    }

    client->connect(clientIp, clientPort);
    player->setPlayerNickName(playerName);

    // TODO: encapsulate call backs inside Client
    client->setSpawnPlayerCallBack([this](sf::Uint16 id){ spawnPlayer(id); });
    client->setRemovePlayerCallBack([this](sf::Uint16 id){ removePlayer(id); });
    client->setAddFireTraceCallBack([this](const Vec3D& from, const Vec3D& to){ addFireTrace(from, to); });
    client->setAddBonusCallBack([this](const std::string& bonusName, const Vec3D& position){ addBonus(bonusName, position); });
    client->setRemoveBonusCallBack([this](const ObjectNameTag& bonusName){ removeBonus(bonusName); });
    client->setChangeEnemyWeaponCallBack([this](const std::string& weaponName, sf::Uint16 id){ changeEnemyWeapon(weaponName, id); });
}

void Shooter::start() {
    // This code executed once in the beginning:
    setDebugText(false);
    setUpdateWorld(false);

    screen->setMouseCursorVisible(true);

    world->loadMap(ShooterConsts::MAP_OBJ, Vec3D{5, 5, 5});

    player = std::make_shared<Player>(ObjectNameTag("Player"));
    player->scale(Vec3D(3, 1, 3));
    playerController = std::make_shared<PlayerController>(player, keyboard, mouse);

    // TODO: encapsulate call backs inside Player
    player->setAddTraceCallBack([this](const Vec3D& from, const Vec3D& to){ client->addTrace(from, to); addFireTrace(from, to); });
    player->setDamagePlayerCallBack([this] (sf::Uint16 targetId, double damage) { client->damagePlayer(targetId, damage); });
    player->setRayCastFunction([this](const Vec3D& from, const Vec3D& to) { return world->rayCast(from, to, "weapon Player"); });
    player->setTakeBonusCallBack([this] (const string& bonusName) { client->takeBonus(bonusName); });
    player->setAddWeaponCallBack([this](std::shared_ptr<Weapon> weapon){ addWeapon(std::move(weapon)); });
    player->setRemoveWeaponCallBack([this](std::shared_ptr<Weapon> weapon){ removeWeapon(std::move(weapon)); });

    player->initWeapons();

    camera->translateToPoint(player->position() + Vec3D{0, 1.8, 0});
    player->attach(camera);

    world->addBody(player);
    player->translate(Vec3D{0, 10, 0});

    client = std::make_shared<Client>(player);
    server = std::make_shared<Server>();

    // connecting to the server
    InitNetwork();
    // Waiting for connect and updating server if it's same window
    while (client->isWorking() && !client->connected()) {
        client->update();
        server->update();
        Time::update();
    }
    // If connect fail - return to menu
    if (!client->isWorking()) {
        inGame = false;
        server->stop();
    }

    // windows init:
    mainMenu.setTitle("Main menu");
    mainMenu.setBackgroundTexture(ShooterConsts::MAIN_MENU_BACK, 1.1, 1.1, screen->width(), screen->height());

    mainMenu.addButton(screen->width()/2, 200, 200, 20, [this] () { this->play(); SoundController::playSound(SoundTag("click"), ShooterConsts::CLICK_SOUND);}, "Server: " + client->serverIp().toString(), 5, 5, ShooterConsts::MAIN_MENU_GUI, {0, 66}, {0, 86}, {0, 46}, Consts::MEDIUM_FONT, {255, 255, 255});
    mainMenu.addButton(screen->width()/2, 350, 200, 20, [this] () { this->player->translateToPoint(Vec3D{0, 0, 0}); this->player->setVelocity({}); this->play(); SoundController::playSound(SoundTag("click"), ShooterConsts::CLICK_SOUND);}, "Respawn", 5, 5, ShooterConsts::MAIN_MENU_GUI, {0, 66}, {0, 86}, {0, 46}, Consts::MEDIUM_FONT, {255, 255, 255});

    mainMenu.addButton(screen->width()/2, 500, 200, 20, [this] () { client->disconnect(); server->stop(); this->exit();}, "Exit", 5, 5, ShooterConsts::MAIN_MENU_GUI, {0, 66}, {0, 86}, {0, 46}, Consts::MEDIUM_FONT, {255, 255, 255});
}

void Shooter::update() {
    // This code executed every time step:

    server->update();
    client->update();

    // Check all input after this condition please
    if (!screen->hasFocus()) {
        return;
    }

    if(keyboard->isKeyTapped(sf::Keyboard::Escape)) {
        inGame = !inGame;
        screen->setMouseCursorVisible(!inGame);
    }

    if(inGame) {
        screen->setTitle(ShooterConsts::PROJECT_NAME);
        playerController->update();
        mouse->setMouseInCenter();
    } else {
        mainMenu.update();
    }

    setUpdateWorld(inGame);

    // background sounds and music control
    if(SoundController::getStatus(SoundTag("background")) != sf::Sound::Status::Playing) {
        SoundController::playSound(SoundTag("background"), ShooterConsts::BACK_NOISE);
    }
}

void Shooter::gui() {

    sf::Sprite sprite;
    sprite.setTexture(*ResourceManager::loadTexture(ShooterConsts::MAIN_MENU_GUI));
    sprite.setTextureRect(sf::IntRect(243, 3, 9, 9));
    sprite.scale(3, 3);
    sprite.setPosition(screen->width() / 2.0f - 27.0f/2.0f, screen->height() / 2.0f - 27.0f/2.0f);
    sprite.setColor(sf::Color(0, 0, 0, 250));
    screen->drawSprite(sprite);

    // health player stats
    drawPlayerStats();
    drawStatsTable();
}

void Shooter::drawStatsTable() {
    int i = 1;

    screen->drawText(client->lastEvent(),Vec2D{10, 10},25, sf::Color(0, 0, 0, 100));

    vector<shared_ptr<Player>> allPlayers;
    allPlayers.push_back(player);
    for(auto& [playerId, player] : client->players())
        allPlayers.push_back(player);

    std::sort(allPlayers.begin(), allPlayers.end(), [](std::shared_ptr<Player> p1, std::shared_ptr<Player> p2){
        return p1->kills() - p1->deaths() > p2->kills() - p2->deaths();
    } );

    for(auto& p : allPlayers) {
        screen->drawText(std::to_string(i) + "\t" + p->playerNickName() + "\t" + std::to_string(p->kills()) + " / " + std::to_string(p->deaths()),
                         Vec2D{10, 15 + 35.0*i}, 25, sf::Color(0, 0, 0, 150));
        i++;
    }
}

void Shooter::drawPlayerStats() {
    // health bar
    double xPos = 10;
    double yPos = screen->height() - 20;

    int width = screen->width()/2 - 20;
    int height = 10;

    screen->drawTetragon(Vec2D{xPos, yPos},
                         Vec2D{xPos + width * player->health() / ShooterConsts::HEALTH_MAX, yPos},
                         Vec2D{xPos + width * player->health() / ShooterConsts::HEALTH_MAX, yPos + height},
                         Vec2D{xPos, yPos + height},
                         { static_cast<sf::Uint8>((ShooterConsts::HEALTH_MAX - player->health())/ShooterConsts::HEALTH_MAX * 255), static_cast<sf::Uint8>(player->health() * 255 / ShooterConsts::HEALTH_MAX), 0, 100 });

    screen->drawTetragon(Vec2D{xPos, yPos - 15},
                         Vec2D{xPos + width * player->ability() / ShooterConsts::ABILITY_MAX, yPos - 15},
                         Vec2D{xPos + width * player->ability() / ShooterConsts::ABILITY_MAX, yPos - 15 + height},
                         Vec2D{xPos, yPos - 15 + height},
                         { 255, 168, 168, 100 });

    auto balance = player->balance();

    screen->drawText(std::to_string((int)balance.first), Vec2D{150, static_cast<double>(screen->height() - 150)}, 100, sf::Color(0, 0, 0, 100));
    screen->drawText(std::to_string((int)balance.second), Vec2D{50, static_cast<double>(screen->height() - 100)}, 50, sf::Color(0, 0, 0, 70));
}

void Shooter::play() {
    inGame = true;
    screen->setMouseCursorVisible(false);
}

void Shooter::spawnPlayer(sf::Uint16 id) {
    std::string name = "Enemy_" + std::to_string(id);

    std::shared_ptr<Player> newPlayer = std::make_shared<Player>(ObjectNameTag(name));
    newPlayer->setCollision(false);

    client->addPlayer(id, newPlayer);
    world->addBody(newPlayer);
    newPlayer->setVisible(true);
    newPlayer->setAcceleration(Vec3D{0, 0, 0});

    // add head and other stuff:
    world->loadBody(ObjectNameTag(name + "_head"), ShooterConsts::CUBE_OBJ, Vec3D{0.7, 0.7, 0.7});
    world->body(ObjectNameTag(name + "_head"))->translate(Vec3D{0, 2, 0});
    world->body(ObjectNameTag(name + "_head"))->setCollider(false);
    newPlayer->attach(world->body(ObjectNameTag(name + "_head")));

    world->loadBody(ObjectNameTag(name + "_eye1"), ShooterConsts::CUBE_OBJ, Vec3D{0.2, 0.2, 0.05});
    world->body(ObjectNameTag(name + "_eye1"))->translate(Vec3D{0.3, 2.1, 0.7});
    world->body(ObjectNameTag(name + "_eye1"))->setCollider(false);
    world->body(ObjectNameTag(name + "_eye1"))->setColor({147, 159, 255});
    world->body(ObjectNameTag(name + "_head"))->attach(world->body(ObjectNameTag(name + "_eye1")));

    world->loadBody(ObjectNameTag(name + "_eye2"), ShooterConsts::CUBE_OBJ, Vec3D{0.2, 0.2, 0.05});
    world->body(ObjectNameTag(name + "_eye2"))->translate(Vec3D{-0.3, 2.1, 0.7});
    world->body(ObjectNameTag(name + "_eye2"))->setCollider(false);
    world->body(ObjectNameTag(name + "_eye2"))->setColor({147, 159, 255});
    world->body(ObjectNameTag(name + "_head"))->attach(world->body(ObjectNameTag(name + "_eye2")));

    changeEnemyWeapon("gun", id);
}

void Shooter::removePlayer(sf::Uint16 id) {
    std::string name = "Enemy_" + std::to_string(id);
    world->removeBody(ObjectNameTag(name));
    world->removeBody(ObjectNameTag(name + "_head"));
    world->removeBody(ObjectNameTag(name + "_eye1"));
    world->removeBody(ObjectNameTag(name + "_eye2"));
    world->removeBody(ObjectNameTag("Enemy_" + std::to_string(id) + "_weapon"));
}

void Shooter::addFireTrace(const Vec3D &from, const Vec3D &to) {
    std::string traceName = "Client_fireTraces_" + std::to_string(fireTraces++);
    world->addBody(std::make_shared<RigidBody>(Mesh::LineTo(ObjectNameTag(traceName), from, to, 0.05)));
    world->body(ObjectNameTag(traceName))->setCollider(false);

    Timeline::animate(AnimationListTag(traceName + "_fadeOut"), new AColor(world->body(ObjectNameTag(traceName)), {150, 150, 150, 0}));
    Timeline::animate(AnimationListTag(traceName + "_delete"), new AFunction([this, traceName](){ removeFireTrace(ObjectNameTag(traceName)); }, 1, 2));
}

void Shooter::removeFireTrace(const ObjectNameTag& traceName) {
    world->removeBody(traceName);
}

void Shooter::addBonus(const string &bonusName, const Vec3D &position) {
    std::string name = bonusName.substr(6, bonusName.size()-3-5);

    ObjectNameTag nameTag(bonusName);

    world->addBody(std::make_shared<RigidBody>(ObjectNameTag(bonusName), "obj/" + name + ".obj", Vec3D{3, 3, 3}));
    world->body(ObjectNameTag(bonusName))->translateToPoint(position);
    world->body(ObjectNameTag(bonusName))->setCollider(false);
    Timeline::animate(AnimationListTag(bonusName + "_rotation"), new ARotate(world->body(ObjectNameTag(bonusName)), Vec3D{0, 2*Consts::PI, 0}, 4, Animation::LoopOut::Continue, Animation::InterpolationType::Linear));
}

void Shooter::removeBonus(const ObjectNameTag &bonusName) {
    world->removeBody(bonusName);
    Timeline::deleteAnimationList(AnimationListTag(bonusName.str() + "_rotation"));
}

void Shooter::addWeapon(std::shared_ptr<Weapon> weapon) {
    world->addBody(weapon);

    if(client != nullptr) {
        client->changeWeapon(weapon->name().str());
    }
}

void Shooter::changeEnemyWeapon(const std::string& weaponName, sf::Uint16 enemyId) {
    ObjectNameTag weaponTag("Enemy_" + std::to_string(enemyId) + "_weapon");
    auto head = world->body(ObjectNameTag("Enemy_" + std::to_string(enemyId) + "_head"));
    auto enemy = world->body(ObjectNameTag("Enemy_" + std::to_string(enemyId)));


    // remove old weapon:
    world->removeBody(weaponTag);
    enemy->unattach(ObjectNameTag("Weapon"));

    world->loadBody(weaponTag, "obj/" + weaponName + ".obj");
    world->body(weaponTag)->setCollider(false);
    world->body(weaponTag)->scale(Vec3D(3, 3, 3));

    world->body(weaponTag)->translateToPoint(head->position() - enemy->left() - enemy->up());

    world->body(weaponTag)->rotate(Vec3D(0, Consts::PI + head->angle().y(), 0));
    world->body(weaponTag)->rotateLeft(-head->angleLeftUpLookAt().x());
    enemy->attach(world->body(weaponTag));
}

void Shooter::removeWeapon(std::shared_ptr<Weapon> weapon) {
    world->removeBody(weapon->name());
}