#include "../include/LoginWindow.hpp"
#include <gtkmm/label.h>
#include <gtkmm/entry.h>
#include <gtkmm/alignment.h>
#include <gtkmm/button.h>
#include <gtkmm/separator.h>
#include <gtkmm/eventbox.h>
#include <gdkmm/cursor.h>
#include <cassert>

namespace dchat
{
    LoginWindow::LoginWindow() : 
        loginButton("Login"),
        loginHandlerUser(nullptr),

        registerButton("Register"),
        registerHandlerUser(nullptr),
        passwordMismatchHandler(nullptr)
    {
        setupLogin();
        setupRegister();

        set_halign(Gtk::ALIGN_CENTER);
        set_valign(Gtk::ALIGN_CENTER);
        set_border_width(0);
        attach(loginLayout, 0, 0, 1, 1);
        attach(registerLayout, 0, 0, 1, 1);
        loginLayout.show_all();
    }

    void LoginWindow::setLoginHandler(LoginHandler loginHandler)
    {
        loginHandlerUser = loginHandler;
    }

    void LoginWindow::setRegisterHandler(RegisterHandler registerHandler)
    {
        registerHandlerUser = registerHandler;
    }

    void LoginWindow::setRegisterPasswordMismatch(RegisterPasswordMismatchHandler passwordMismatchHandler)
    {
        this->passwordMismatchHandler = passwordMismatchHandler;
    }

    void LoginWindow::setupLogin()
    {
        loginHandler = [this]
        {
            if(loginHandlerUser)
                loginHandlerUser(loginUsernameInput.get_text(), loginPasswordInput.get_text());
        };

        Gtk::Label *username = Gtk::manage(new Gtk::Label("Username"));
        username->set_halign(Gtk::ALIGN_START);
        loginLayout.attach(*username, 0, 0, 1, 1);

        loginUsernameInput.set_size_request(200);
        loginUsernameInput.signal_activate().connect(loginHandler);
        loginLayout.attach_next_to(loginUsernameInput, *username, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Alignment *usernamePasswordSpacer = Gtk::manage(new Gtk::Alignment());
        usernamePasswordSpacer->set_size_request(-1, 35);
        loginLayout.attach_next_to(*usernamePasswordSpacer, loginUsernameInput, Gtk::POS_BOTTOM, 1, 1);

        Gtk::Label *password = Gtk::manage(new Gtk::Label("Password"));
        password->set_halign(Gtk::ALIGN_START);
        loginLayout.attach_next_to(*password, *usernamePasswordSpacer, Gtk::POS_BOTTOM, 1, 1);

        loginPasswordInput.set_visibility(false);
        loginPasswordInput.set_size_request(200);
        loginPasswordInput.signal_activate().connect(loginHandler);
        loginLayout.attach_next_to(loginPasswordInput, *password, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Alignment *loginButtonSpacerTop = Gtk::manage(new Gtk::Alignment());
        loginButtonSpacerTop->set_size_request(-1, 20);
        loginLayout.attach_next_to(*loginButtonSpacerTop, loginPasswordInput, Gtk::POS_BOTTOM, 1, 1);

        Gtk::Alignment *loginButtonSpacer = Gtk::manage(new Gtk::Alignment());
        loginLayout.attach_next_to(*loginButtonSpacer, *loginButtonSpacerTop, Gtk::POS_BOTTOM, 2, 1);

        loginButton.set_halign(Gtk::ALIGN_END);
        loginButton.signal_clicked().connect(loginHandler);
        loginButton.get_style_context()->add_class("confirm-button");
        loginLayout.attach_next_to(loginButton, *loginButtonSpacer, Gtk::POS_RIGHT, 1, 1);

        Gtk::Separator *separator = Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL));
        separator->get_style_context()->add_class("separator-horizontal-margin");
        loginLayout.attach_next_to(*separator, *loginButtonSpacer, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Label *registerText = Gtk::manage(new Gtk::Label("Don't have an account? "));
        loginLayout.attach_next_to(*registerText, *separator, Gtk::POS_BOTTOM, 1, 1);
        Gtk::Label *registerTextClickable = Gtk::manage(new Gtk::Label());
        registerTextClickable->set_markup("<span color='#3060d8'>Register a new one</span>");
        Gtk::EventBox *eventBox = Gtk::manage(new Gtk::EventBox());
        eventBox->add(*registerTextClickable);
        auto pointerCursor = Gdk::Cursor::create(Gdk::Display::get_default(), "pointer");
        //eventBox->get_window()->set_cursor(pointerCursor);
        eventBox->signal_button_release_event().connect([this](GdkEventButton *event)
        {
            loginLayout.hide();
            registerLayout.show_all();
            get_window()->invalidate(true);
            return true;
        });
        loginLayout.attach_next_to(*eventBox, *registerText, Gtk::POS_RIGHT, 1, 1);

        loginLayout.get_style_context()->add_class("login-window");
    }

    void LoginWindow::setupRegister()
    {
        registerHandler = [this]
        {
            if(registerPasswordInput.get_text() != registerPasswordRepeatInput.get_text())
            {
                if(passwordMismatchHandler)
                    passwordMismatchHandler();
                return;
            }

            if(registerHandlerUser)
                registerHandlerUser(registerUsernameInput.get_text(), registerPasswordInput.get_text());
        };

        Gtk::Label *username = Gtk::manage(new Gtk::Label("Username"));
        username->set_halign(Gtk::ALIGN_START);
        registerLayout.attach(*username, 0, 0, 1, 1);

        registerUsernameInput.set_size_request(200);
        registerUsernameInput.signal_activate().connect(registerHandler);
        registerLayout.attach_next_to(registerUsernameInput, *username, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Alignment *usernamePasswordSpacer = Gtk::manage(new Gtk::Alignment());
        usernamePasswordSpacer->set_size_request(-1, 35);
        registerLayout.attach_next_to(*usernamePasswordSpacer, registerUsernameInput, Gtk::POS_BOTTOM, 1, 1);

        Gtk::Label *password = Gtk::manage(new Gtk::Label("Password"));
        password->set_halign(Gtk::ALIGN_START);
        registerLayout.attach_next_to(*password, *usernamePasswordSpacer, Gtk::POS_BOTTOM, 1, 1);

        registerPasswordInput.set_visibility(false);
        registerPasswordInput.set_size_request(200);
        registerPasswordInput.signal_activate().connect(registerHandler);
        registerLayout.attach_next_to(registerPasswordInput, *password, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Label *repeatPassword = Gtk::manage(new Gtk::Label("Repeat password"));
        repeatPassword->set_halign(Gtk::ALIGN_START);
        registerLayout.attach_next_to(*repeatPassword, registerPasswordInput, Gtk::POS_BOTTOM, 1, 1);

        registerPasswordRepeatInput.set_visibility(false);
        registerPasswordRepeatInput.set_size_request(200);
        registerPasswordRepeatInput.signal_activate().connect(registerHandler);
        registerLayout.attach_next_to(registerPasswordRepeatInput, *repeatPassword, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Alignment *registerButtonSpacerTop = Gtk::manage(new Gtk::Alignment());
        registerButtonSpacerTop->set_size_request(-1, 20);
        registerLayout.attach_next_to(*registerButtonSpacerTop, registerPasswordRepeatInput, Gtk::POS_BOTTOM, 1, 1);

        Gtk::Alignment *registerButtonSpacer = Gtk::manage(new Gtk::Alignment());
        registerLayout.attach_next_to(*registerButtonSpacer, *registerButtonSpacerTop, Gtk::POS_BOTTOM, 2, 1);

        registerButton.set_halign(Gtk::ALIGN_END);
        registerButton.signal_clicked().connect(registerHandler);
        registerButton.get_style_context()->add_class("confirm-button");
        registerLayout.attach_next_to(registerButton, *registerButtonSpacer, Gtk::POS_RIGHT, 1, 1);

        Gtk::Separator *separator = Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL));
        separator->get_style_context()->add_class("separator-horizontal-margin");
        registerLayout.attach_next_to(*separator, *registerButtonSpacer, Gtk::POS_BOTTOM, 3, 1);

        Gtk::Label *loginText = Gtk::manage(new Gtk::Label("Already have an account? "));
        registerLayout.attach_next_to(*loginText, *separator, Gtk::POS_BOTTOM, 1, 1);
        Gtk::Label *loginTextClickable = Gtk::manage(new Gtk::Label());
        loginTextClickable->set_markup("<span color='#3060d8'>Login to an existing account</span>");
        Gtk::EventBox *eventBox = Gtk::manage(new Gtk::EventBox());
        eventBox->add(*loginTextClickable);
        auto pointerCursor = Gdk::Cursor::create(Gdk::Display::get_default(), "pointer");
        //eventBox->get_window()->set_cursor(pointerCursor);
        eventBox->signal_button_release_event().connect([this](GdkEventButton *event)
        {
            registerLayout.hide();
            loginLayout.show_all();
            get_window()->invalidate(true);
            return true;
        });
        registerLayout.attach_next_to(*eventBox, *loginText, Gtk::POS_RIGHT, 1, 1);

        registerLayout.get_style_context()->add_class("login-window");
    }
}