/*
   client/inventory.cc
   This file is part of the Osirion project and is distributed under
   the terms and conditions of the GNU General Public License version 2
*/

#include "core/application.h"
#include "client/inventory.h"
#include "ui/label.h"
#include "ui/listitem.h"
#include "ui/paint.h"
#include "ui/ui.h"

#include <iomanip>

namespace client {
	
Inventory::Inventory(ui::Widget *parent) : ui::Window(parent)
{
	menu_infotimestamp = 0;
	menu_inventorytimestamp = 0;
	
	menu_namelabel = new ui::Label(this);
	menu_namelabel->set_label("label");
	menu_namelabel->set_background(false);
	menu_namelabel->set_border(false);
	menu_namelabel->set_font(ui::root()->font_large());
	menu_namelabel->set_alignment(ui::AlignCenter);
	menu_namelabel->set_text("Inventory");
	
	menu_listview = new ui::ListView(this);
	menu_listview->set_label("listview");
	menu_listview->set_background(false);
	menu_listview->set_border(true);
	
	menu_inventorytext = new ui::PlainText(this);
	menu_inventorytext->set_label("inventorytext");
	menu_inventorytext->set_background(false);
	menu_inventorytext->set_border(false);
	menu_inventorytext->set_font(ui::root()->font_small());
	
	hide();
}

Inventory::~Inventory()
{
}

void Inventory::toggle()
{
	if (visible())
		hide();
	else
		show();
}
void Inventory::update_inventory()
{
	menu_listview->clear();
	menu_infotimestamp = 0;
	menu_inventorytimestamp = 0;
	
	if (!core::localcontrol() || !core::localcontrol()->inventory()) {
		return;
	}
	const core::Item *selecteditem = (menu_listview->selected() ? menu_listview->selected()->item() : 0);
	
	for (core::Inventory::Items::const_iterator it = core::localcontrol()->inventory()->items().begin(); it != core::localcontrol()->inventory()->items().end(); it++) {
		core::Item *item = (*it);
	
		if (!item->info()) {
			continue;
		}
	
		// this makes sure inventory info gets requested from the server
		core::game()->request_info(item->info()->id());
		
		if (item->info()->timestamp() >	menu_infotimestamp) {
			menu_infotimestamp = item->info()->timestamp();
		}
		
		if (item->amount() != 0)  {
			ui::ListItem *listitem = 0;
			
			std::ostringstream str;
			str << item->info()->name().c_str();
			if (item->amount() > 0) {
				str << " (" << item->amount() << ")";
			}
			listitem = new ui::ListItem(menu_listview, str.str().c_str());
			listitem->set_height(listitem->font()->height() * 2.0f);
			listitem->set_item(item);
			listitem->set_info(item->info());
			
			// preserve previous selection during update
			if (item == selecteditem) {
				menu_listview->select(listitem);
			}
		}
	}
	menu_listview->event_resize();
	menu_inventorytimestamp = core::localcontrol()->inventory()->timestamp();
}

void Inventory::update_selection()
{
}

bool Inventory::verify() const
{
	if (!core::localcontrol() || !core::localcontrol()->inventory()) {
		
	}
	
	if (menu_inventorytimestamp != core::localcontrol()->inventory()->timestamp()) {
		return false;
	}
	
	for (core::Inventory::Items::const_iterator it = core::localcontrol()->inventory()->items().begin(); it != core::localcontrol()->inventory()->items().end(); it++) {
		core::Item *item = (*it);
	
		if (!item->info()) {
			continue;
		}	
		if (item->info()->timestamp() >	menu_infotimestamp) {
			return false;
		}
	}
	return true;
}

void Inventory::resize()
{
	const float smallmargin = ui::UI::elementsize.height();
	const float fontmargin =  ui::root()->font_large()->height();
	
	// resize label
	menu_namelabel->set_size(width() - fontmargin * 2.0f, menu_namelabel->font()->height());	
	menu_namelabel->set_location(fontmargin, fontmargin);
	
	// resize inventory listview
	menu_listview->set_size(ui::UI::elementsize.width(), height() - smallmargin * 2.0f - fontmargin * 6.0f);
	menu_listview->set_location(fontmargin, fontmargin * 3.0f);
	
	menu_inventorytext->set_size(menu_listview->width(), fontmargin * 2.0f);
	menu_inventorytext->set_location(menu_listview->left(),  menu_listview->bottom() + fontmargin);
}

void Inventory::draw()
{
	if (!verify()) {
		update_inventory();	
	}
	
	std::stringstream str;
	str << "Credits: " << std::setw(12) << core::localplayer()->credits();

	if (core::localcontrol() && core::localcontrol()->inventory()) {
		core::Inventory *inventory = core::localcontrol()->inventory();
		
		std::stringstream cargostr;
		cargostr << inventory->capacity_used() << " of " << inventory->capacity();
		
		str << '\n' << "Cargo:   " << aux::pad_left(cargostr.str(),12);
	}
	menu_inventorytext->set_text(str.str());
	
	Window::draw();
}

bool Inventory::on_emit(Widget *sender, const Event event, void *data)
{
	return Window::on_emit(sender, event, data);
}

bool Inventory::on_keypress(const int key, const unsigned int modifier)
{
	switch (key) {

		case SDLK_ESCAPE:
			this->hide();
			return true;
			break;
		default:
			break;
	}

	return Window::on_keypress(key, modifier);
}

	
} // namespace client