#include <string>
#include <gtkmm/grid.h>
#include <gtkmm/entry.h>
#include <gtkmm/label.h>
#include <gtkmm/scale.h>
#include <gtkmm/button.h>
#include <gtkmm/orientable.h>
#include <gtkmm/adjustment.h>

#include "control.hpp"
#include "config.hpp"
#include "color.hpp"

namespace cx_light {

control::control(light *target) {
    this->title = target->get_name();
    this->address = target->get_address();

    this->set_row_spacing(DEFAULT_MARGIN);
    this->set_column_spacing(DEFAULT_MARGIN);

    std::string description_text = "<b>Manage ";
    description_text += this->title;
    description_text += ".</b>";

    this->description = new Gtk::Label(description_text);
    this->description->set_use_markup();
    this->description->set_hexpand();
    this->description->set_halign(Gtk::Align::START);
    this->attach(*this->description, 0, 0, 4, 1);
    
    this->power_description = new Gtk::Label("Brightness");
    this->power_description->set_halign(Gtk::Align::START);
    this->attach(*this->power_description, 0, 1, 1, 1);

    this->power_value = new Glib::RefPtr<Gtk::Adjustment> (
        Gtk::Adjustment::create(512, 0, 1024, 1)
    );

    this->power = new Gtk::Scale(
        *this->power_value, 
        Gtk::Orientation::HORIZONTAL
    );

    this->attach(*this->power, 1, 1, 2, 1);

    this->color_description = new Gtk::Label("Color");
    this->color_description->set_halign(Gtk::Align::START);
    this->attach(*this->color_description, 0, 2, 1, 1);
    
    this->color_value = new Glib::RefPtr<Gtk::Adjustment> (
        Gtk::Adjustment::create(6500, 1000, 20000, 1)
    );

    (*this->color_value)->signal_value_changed().connect([&] () {
        this->drawing->queue_draw();
    });

    this->color = new Gtk::Scale(
        *this->color_value,
        Gtk::Orientation::HORIZONTAL
    );
    
    this->attach(*this->color, 1, 2, 2, 1);

    this->drawing = new Gtk::DrawingArea();
    this->drawing->set_draw_func(sigc::mem_fun(*this, &control::redraw));
    this->attach(*this->drawing, 3, 1, 1, 2);

    this->apply = new Gtk::Button("Apply");
    this->attach(*this->apply, 2, 3, 2, 1);

    this->back = new Gtk::Button("Back");;
    this->attach(*this->back, 0, 3, 2, 1);
}

control::~control() {
    this->remove(*this->description);
    this->remove(*this->power);
    this->remove(*this->power_description);
    this->remove(*this->color);
    this->remove(*this->color_description);
    this->remove(*this->apply);
    this->remove(*this->back);
    this->remove(*this->drawing);

    delete this->drawing;
    delete this->description;
    delete this->power;
    delete this->power_value;
    delete this->power_description;
    delete this->color;
    delete this->color_value;
    delete this->color_description;
    delete this->apply;
    delete this->back;
}

void control::redraw(
    const Cairo::RefPtr<Cairo::Context> &context,
    int width,
    int height
) {
    context->set_line_width(10.0);
  
    color
    ::from_white(((*this->color_value)->get_value()))
    .set_source(context);
  
    context->arc(width / 2, height / 2, width / 4, 0.0, 2 * M_PI);
    context->stroke();
}

}