/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "guiChatConsole.h"
#include "chat.h"
#include "client.h"
#include "debug.h"
#include "gettime.h"
#include "keycode.h"
#include "settings.h"
#include "main.h"  // for g_settings
#include "porting.h"
#include "tile.h"
#include "IGUIFont.h"
#include <string>

#include "gettext.h"

#if USE_FREETYPE
#include "xCGUITTFont.h"
#endif

inline u32 clamp_u8(s32 value)
{
	return (u32) MYMIN(MYMAX(value, 0), 255);
}


GUIChatConsole::GUIChatConsole(
		gui::IGUIEnvironment* env,
		gui::IGUIElement* parent,
		s32 id,
		ChatBackend* backend,
		Client* client
):
	IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
			core::rect<s32>(0,0,100,100)),
	m_chat_backend(backend),
	m_client(client),
	m_screensize(v2u32(0,0)),
	m_animate_time_old(0),
	m_open(false),
	m_height(0),
	m_desired_height(0),
	m_desired_height_fraction(0.0),
	m_height_speed(5.0),
	m_open_inhibited(0),
	m_cursor_blink(0.0),
	m_cursor_blink_speed(0.0),
	m_cursor_height(0.0),
	m_background(NULL),
	m_background_color(255, 0, 0, 0),
	m_font(NULL),
	m_fontsize(0, 0)
{
	m_animate_time_old = getTimeMs();

	// load background settings
	bool console_color_set = !g_settings->get("console_color").empty();
	s32 console_alpha = g_settings->getS32("console_alpha");

	// load the background texture depending on settings
	m_background_color.setAlpha(clamp_u8(console_alpha));
	if (console_color_set)
	{
		v3f console_color = g_settings->getV3F("console_color");
		m_background_color.setRed(clamp_u8(myround(console_color.X)));
		m_background_color.setGreen(clamp_u8(myround(console_color.Y)));
		m_background_color.setBlue(clamp_u8(myround(console_color.Z)));
	}
	else
	{
		m_background = env->getVideoDriver()->getTexture(getTexturePath("background_chat.jpg").c_str());
		m_background_color.setRed(255);
		m_background_color.setGreen(255);
		m_background_color.setBlue(255);
	}

	// load the font
	// FIXME should a custom texture_path be searched too?
	#if USE_FREETYPE
	std::string font_name = g_settings->get("mono_font_path");
	u16 font_size = g_settings->getU16("mono_font_size");
	m_font = gui::CGUITTFont::createTTFont(env, font_name.c_str(), font_size);
	#else
	std::string font_name = "fontdejavusansmono.png";
	m_font = env->getFont(getTexturePath(font_name).c_str());
	#endif
	if (m_font == NULL)
	{
		dstream << "Unable to load font: " << font_name << std::endl;
	}
	else
	{
		core::dimension2d<u32> dim = m_font->getDimension(L"M");
		m_fontsize = v2u32(dim.Width, dim.Height);
		dstream << "Font size: " << m_fontsize.X << " " << m_fontsize.Y << std::endl;
	}
	m_fontsize.X = MYMAX(m_fontsize.X, 1);
	m_fontsize.Y = MYMAX(m_fontsize.Y, 1);

	// set default cursor options
	setCursor(true, true, 2.0, 0.1);
}

GUIChatConsole::~GUIChatConsole()
{
#if USE_FREETYPE
	m_font->drop();
#endif
}

void GUIChatConsole::openConsole(f32 height)
{
	m_open = true;
	m_desired_height_fraction = height;
	m_desired_height = height * m_screensize.Y;
	reformatConsole();
}

bool GUIChatConsole::isOpen() const
{
	return m_open;
}

bool GUIChatConsole::isOpenInhibited() const
{
	return m_open_inhibited > 0;
}

void GUIChatConsole::closeConsole()
{
	m_open = false;
}

void GUIChatConsole::closeConsoleAtOnce()
{
	m_open = false;
	m_height = 0;
	recalculateConsolePosition();
}

f32 GUIChatConsole::getDesiredHeight() const
{
	return m_desired_height_fraction;
}

void GUIChatConsole::setCursor(
	bool visible, bool blinking, f32 blink_speed, f32 relative_height)
{
	if (visible)
	{
		if (blinking)
		{
			// leave m_cursor_blink unchanged
			m_cursor_blink_speed = blink_speed;
		}
		else
		{
			m_cursor_blink = 0x8000;  // on
			m_cursor_blink_speed = 0.0;
		}
	}
	else
	{
		m_cursor_blink = 0;  // off
		m_cursor_blink_speed = 0.0;
	}
	m_cursor_height = relative_height;
}

void GUIChatConsole::draw()
{
	if(!IsVisible)
		return;

	video::IVideoDriver* driver = Environment->getVideoDriver();

	// Check screen size
	v2u32 sc<span class="hl com">/*</span>
<span class="hl com">Minetest</span>
<span class="hl com">Copyright (C) 2013 celeron55, Perttu Ahola &lt;celeron55&#64;gmail.com&gt;</span>
<span class="hl com"></span>
<span class="hl com">This program is free software; you can redistribute it and/or modify</span>
<span class="hl com">it under the terms of the GNU Lesser General Public License as published by</span>
<span class="hl com">the Free Software Foundation; either version 2.1 of the License, or</span>
<span class="hl com">(at your option) any later version.</span>
<span class="hl com"></span>
<span class="hl com">This program is distributed in the hope that it will be useful,</span>
<span class="hl com">but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="hl com">MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<span class="hl com">GNU Lesser General Public License for more details.</span>
<span class="hl com"></span>
<span class="hl com">You should have received a copy of the GNU Lesser General Public License along</span>
<span class="hl com">with this program; if not, write to the Free Software Foundation, Inc.,</span>
<span class="hl com">51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span>
<span class="hl com">*/</span>

<span class="hl ppc">#ifndef S_PLAYER_H_</span>
<span class="hl ppc">#define S_PLAYER_H_</span>

<span class="hl ppc">#include &lt;map&gt;</span>

<span class="hl ppc">#include</span> <span class="hl pps">&quot;cpp_api/s_base.h&quot;</span><span class="hl ppc"></span>


<span class="hl kwc">class</span> ScriptApiPlayer
		<span class="hl opt">:</span> <span class="hl kwc">virtual public</span> ScriptApiBase
<span class="hl opt">{</span>
<span class="hl kwc">public</span><span class="hl opt">:</span>
	<span class="hl kwc">virtual</span> <span class="hl opt">~</span><span class="hl kwd">ScriptApiPlayer</span><span class="hl opt">();</span>

	<span class="hl kwb">void</span> <span class="hl kwd">on_newplayer</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">);</span>
	<span class="hl kwb">void</span> <span class="hl kwd">on_dieplayer</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">);</span>
	<span class="hl kwb">bool</span> <span class="hl kwd">on_respawnplayer</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">);</span>
	<span class="hl kwb">bool</span> <span class="hl kwd">on_prejoinplayer</span><span class="hl opt">(</span><span class="hl kwc">std</span><span class="hl opt">::</span>string name<span class="hl opt">,</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string ip<span class="hl opt">,</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string <span class="hl opt">&amp;</span>reason<span class="hl opt">);</span>
	<span class="hl kwb">void</span> <span class="hl kwd">on_joinplayer</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">);</span>
	<span class="hl kwb">void</span> <span class="hl kwd">on_leaveplayer</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">);</span>
	<span class="hl kwb">void</span> <span class="hl kwd">on_cheat</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">,</span> <span class="hl kwb">const</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string <span class="hl opt">&amp;</span>cheat_type<span class="hl opt">);</span>

	<span class="hl kwb">void</span> <span class="hl kwd">on_playerReceiveFields</span><span class="hl opt">(</span>ServerActiveObject <span class="hl opt">*</span>player<span class="hl opt">,</span>
			<span class="hl kwb">const</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string <span class="hl opt">&amp;</span>formname<span class="hl opt">,</span>
			<span class="hl kwb">const</span> <span class="hl kwc">std</span><span class="hl opt">::</span>map<span class="hl opt">&lt;</span><span class="hl kwc">std</span><span class="hl opt">::</span>string<span class="hl opt">,</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string<span class="hl opt">&gt; &amp;</span>fields<span class="hl opt">);</span>
<span class="hl opt">};</span>


<span class="hl ppc">#endif</span> <span class="hl com">/* S_PLAYER_H_ */</span><span class="hl ppc"></span>
</code></pre></td></tr></table>
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);
			Environment->removeFocus(this);

			// inhibit open so the_game doesn't reopen immediately
			m_open_inhibited = 50;
			return true;
		}
		else if(event.KeyInput.Key == KEY_ESCAPE)
		{
			closeConsoleAtOnce();
			Environment->removeFocus(this);
			// the_game will open the pause menu
			return true;
		}
		else if(event.KeyInput.Key == KEY_PRIOR)
		{
			m_chat_backend->scrollPageUp();
			return true;
		}
		else if(event.KeyInput.Key == KEY_NEXT)
		{
			m_chat_backend->scrollPageDown();
			return true;
		}
		else if(event.KeyInput.Key == KEY_RETURN)
		{
			std::wstring text = m_chat_backend->getPrompt().submit();
			m_client->typeChatMessage(text);
			return true;
		}
		else if(event.KeyInput.Key == KEY_UP)
		{
			// Up pressed
			// Move back in history
			m_chat_backend->getPrompt().historyPrev();
			return true;
		}
		else if(event.KeyInput.Key == KEY_DOWN)
		{
			// Down pressed
			// Move forward in history
			m_chat_backend->getPrompt().historyNext();
			return true;
		}
		else if(event.KeyInput.Key == KEY_LEFT)
		{
			// Left or Ctrl-Left pressed
			// move character / word to the left
			ChatPrompt::CursorOpScope scope =
				event.KeyInput.Control ?
				ChatPrompt::CURSOROP_SCOPE_WORD :
				ChatPrompt::CURSOROP_SCOPE_CHARACTER;
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_MOVE,
				ChatPrompt::CURSOROP_DIR_LEFT,
				scope);
			return true;
		}
		else if(event.KeyInput.Key == KEY_RIGHT)
		{
			// Right or Ctrl-Right pressed
			// move character / word to the right
			ChatPrompt::CursorOpScope scope =
				event.KeyInput.Control ?
				ChatPrompt::CURSOROP_SCOPE_WORD :
				ChatPrompt::CURSOROP_SCOPE_CHARACTER;
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_MOVE,
				ChatPrompt::CURSOROP_DIR_RIGHT,
				scope);
			return true;
		}
		else if(event.KeyInput.Key == KEY_HOME)
		{
			// Home pressed
			// move to beginning of line
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_MOVE,
				ChatPrompt::CURSOROP_DIR_LEFT,
				ChatPrompt::CURSOROP_SCOPE_LINE);
			return true;
		}
		else if(event.KeyInput.Key == KEY_END)
		{
			// End pressed
			// move to end of line
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_MOVE,
				ChatPrompt::CURSOROP_DIR_RIGHT,
				ChatPrompt::CURSOROP_SCOPE_LINE);
			return true;
		}
		else if(event.KeyInput.Key == KEY_BACK)
		{
			// Backspace or Ctrl-Backspace pressed
			// delete character / word to the left
			ChatPrompt::CursorOpScope scope =
				event.KeyInput.Control ?
				ChatPrompt::CURSOROP_SCOPE_WORD :
				ChatPrompt::CURSOROP_SCOPE_CHARACTER;
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_DELETE,
				ChatPrompt::CURSOROP_DIR_LEFT,
				scope);
			return true;
		}
		else if(event.KeyInput.Key == KEY_DELETE)
		{
			// Delete or Ctrl-Delete pressed
			// delete character / word to the right
			ChatPrompt::CursorOpScope scope =
				event.KeyInput.Control ?
				ChatPrompt::CURSOROP_SCOPE_WORD :
				ChatPrompt::CURSOROP_SCOPE_CHARACTER;
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_DELETE,
				ChatPrompt::CURSOROP_DIR_RIGHT,
				scope);
			return true;
		}
		else if(event.KeyInput.Key == KEY_KEY_U && event.KeyInput.Control)
		{
			// Ctrl-U pressed
			// kill line to left end
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_DELETE,
				ChatPrompt::CURSOROP_DIR_LEFT,
				ChatPrompt::CURSOROP_SCOPE_LINE);
			return true;
		}
		else if(event.KeyInput.Key == KEY_KEY_K && event.KeyInput.Control)
		{
			// Ctrl-K pressed
			// kill line to right end
			m_chat_backend->getPrompt().cursorOperation(
				ChatPrompt::CURSOROP_DELETE,
				ChatPrompt::CURSOROP_DIR_RIGHT,
				ChatPrompt::CURSOROP_SCOPE_LINE);
			return true;
		}
		else if(event.KeyInput.Key == KEY_TAB)
		{
			// Tab or Shift-Tab pressed
			// Nick completion
			std::list<std::string> names = m_client->getConnectedPlayerNames();
			bool backwards = event.KeyInput.Shift;
			m_chat_backend->getPrompt().nickCompletion(names, backwards);
			return true;
		}
		else if(event.KeyInput.Char != 0 && !event.KeyInput.Control)
		{
			#if (defined(linux) || defined(__linux))
				wchar_t wc = L'_';
				mbtowc( &wc, (char *) &event.KeyInput.Char, sizeof(event.KeyInput.Char) );
				m_chat_backend->getPrompt().input(wc);
			#else
				m_chat_backend->getPrompt().input(event.KeyInput.Char);
			#endif
			return true;
		}
	}
	else if(event.EventType == EET_MOUSE_INPUT_EVENT)
	{
		if(event.MouseInput.Event == EMIE_MOUSE_WHEEL)
		{
			s32 rows = myround(-3.0 * event.MouseInput.Wheel);
			m_chat_backend->scroll(rows);
		}
	}

	return Parent ? Parent->OnEvent(event) : false;
}