/**

 * vim: set ts=4 :

 * =============================================================================

 * SourceMod

 * Copyright (C) 2004-2007 AlliedModders LLC.  All rights reserved.

 * =============================================================================

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, version 3.0, as published by the

 * Free Software Foundation.

 * 

 * 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 General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program.  If not, see <http://www.gnu.org/licenses/>.

 *

 * As a special exception, AlliedModders LLC gives you permission to link the

 * code of this program (as well as its derivative works) to "Half-Life 2," the

 * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

 * by the Valve Corporation.  You must obey the GNU General Public License in

 * all respects for all other code used.  Additionally, AlliedModders LLC grants

 * this exception to all derivative works.  AlliedModders LLC defines further

 * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

 * or <http://www.sourcemod.net/license.php>.

 *

 * Version: $Id$

 */

#include "MenuStyle_Radio.h"

#include "sm_stringutil.h"

#include "UserMessages.h"

#include "GameConfigs.h"

#include "PlayerManager.h"

#if defined MENU_DEBUG

#include "Logger.h"

#endif

extern const char *g_RadioNumTable[];

CRadioStyle g_RadioMenuStyle;

int g_ShowMenuId = -1;

bool g_bRadioInit = false;

CRadioStyle::CRadioStyle() : m_players(new CBaseMenuPlayer[256+1])

{

}

void CRadioStyle::OnSourceModAllInitialized()

{

	g_Players.AddClientListener(this);

}

void CRadioStyle::OnSourceModLevelChange(const char *mapName)

{

	if (g_bRadioInit)

	{

		return;

	}

	g_bRadioInit = true;

	const char *msg = g_pGameConf->GetKeyValue("HudRadioMenuMsg");

	if (!msg || msg[0] == '\0')

	{

		return;

	}

	g_ShowMenuId = g_UserMsgs.GetMessageIndex(msg);

	if (!IsSupported())

	{

		return;

	}

	g_Menus.AddStyle(this);

	g_Menus.SetDefaultStyle(this);

	g_UserMsgs.HookUserMessage(g_ShowMenuId, this, false);

}

void CRadioStyle::OnSourceModShutdown()

{

	g_Players.RemoveClientListener(this);

	g_UserMsgs.UnhookUserMessage(g_ShowMenuId, this, false);

	while (!m_FreeDisplays.empty())

	{

		delete m_FreeDisplays.front();

		m_FreeDisplays.pop();

	}

}

bool CRadioStyle::IsSupported()

{

	return (g_ShowMenuId != -1);

}

bool CRadioStyle::OnClientCommand(int client)

{

	const char *cmd = engine->Cmd_Argv(0);

	if (strcmp(cmd, "menuselect") == 0)

	{

		if (!m_players[client].bInMenu)

		{

			return false;

		}

		int arg = atoi(engine->Cmd_Argv(1));

		ClientPressedKey(client, arg);

		return true;

	}

	return false;

}

static unsigned int g_last_holdtime = 0;

static unsigned int g_last_client_count = 0;

static int g_last_clients[256];

void CRadioStyle::OnUserMessage(int msg_id, bf_write *bf, IRecipientFilter *pFilter)

{

	int count = pFilter->GetRecipientCount();

	bf_read br(bf->GetBasePointer(), 2);

	br.ReadWord();

	int c = br.ReadChar();

	g_last_holdtime = (c == -1) ? 0 : (unsigned)c;

	for (int i=0; i<count; i++)

	{

		g_last_clients[g_last_client_count++] = pFilter->GetRecipientIndex(i);

	}

}

void CRadioStyle::OnUserMessageSent(int msg_id)

{

	for (unsigned int i=0; i<g_last_client_count; i++)

	{

		int client = g_last_clients[i];

#if defined MENU_DEBUG

		g_Logger.LogMessage("[SM_MENU] CRadioStyle got ShowMenu (client %d) (bInMenu %d)",

			client,

			m_players[client].bInExternMenu);

#endif

		if (m_players[client].bInMenu)

		{

			_CancelClientMenu(client, MenuCancel_Interrupted, true);

		}

		m_players[client].bInExternMenu = true;

		m_players[client].menuHoldTime = g_last_holdtime;

	}

	g_last_client_count = 0;

}

void CRadioStyle::SendDisplay(int client, IMenuPanel *display)

{

	CRadioDisplay *rDisplay = (CRadioDisplay *)display;

	rDisplay->SendRawDisplay(client, m_players[client].menuHoldTime);

}

IMenuPanel *CRadioStyle::CreatePanel()

{

	return g_RadioMenuStyle.MakeRadioDisplay();

}

IBaseMenu *CRadioStyle::CreateMenu(IMenuHandler *pHandler, IdentityToken_t *pOwner)

{

	return new CRadioMenu(pHandler, pOwner);

}

unsigned int CRadioStyle::GetMaxPageItems()

{

	return 10;

}

const char *CRadioStyle::GetStyleName()

{

	return "radio";

}

CBaseMenuPlayer *CRadioStyle::GetMenuPlayer(int client)

{

	return &m_players[client];

}

CRadioDisplay *CRadioStyle::MakeRadioDisplay(CRadioMenu *menu)

{

	CRadioDisplay *display;

	if (m_FreeDisplays.empty())

	{

		display = new CRadioDisplay();

	} else {

		display = m_FreeDisplays.front();

		m_FreeDisplays.pop();

		display->Reset();

	}

	return display;

}

void CRadioStyle::FreeRadioDisplay(CRadioDisplay *display)

{

	m_FreeDisplays.push(display);

}

CRadioDisplay::CRadioDisplay()

{

	Reset();

}

CRadioDisplay::CRadioDisplay(CRadioMenu *menu)

{

	Reset();

}

bool CRadioDisplay::DrawRawLine(const char *rawline)

{

	m_BufferText.append(rawline);

	m_BufferText.append("\n");

	return true;

}

void CRadioDisplay::Reset()

{

	m_BufferText.assign("");

	m_Title.assign("");

	m_NextPos = 1;

	keys = 0;

}

unsigned int CRadioDisplay::GetCurrentKey()

{

	return m_NextPos;

}

bool CRadioDisplay::SetCurrentKey(unsigned int key)

{

	if (key < m_NextPos || m_NextPos > 10)

	{

		return false;

	}

	m_NextPos = key;

	return true;

}

bool CRadioDisplay::SendDisplay(int client, IMenuHandler *handler, unsigned int time)

{

	return g_RadioMenuStyle.DoClientMenu(client, this, handler, time);

}

bool CRadioDisplay::SetExtOption(MenuOption option, const void *valuePtr)

{

	return false;

}

IMenuStyle *CRadioDisplay::GetParentStyle()

{

	return &g_RadioMenuStyle;

}

void CRadioDisplay::DrawTitle(const char *text, bool onlyIfEmpty/* =false */)

{

	if (m_Title.size() != 0 && onlyIfEmpty)

	{

		return;

	}

	m_Title.assign(text);

}

unsigned int CRadioDisplay::DrawItem(const ItemDrawInfo &item)

{

	if (m_NextPos > 10 || !CanDrawItem(item.style))

	{

		return 0;

	}

	if (item.style & ITEMDRAW_RAWLINE)

	{

		if (item.style & ITEMDRAW_SPACER)

		{

			m_BufferText.append(" \n");

		} else {

			m_BufferText.append(item.display);

			m_BufferText.append("\n");

		}

		return 0;

	} else if (item.style & ITEMDRAW_SPACER) {

		m_BufferText.append(" \n");

		return m_NextPos++;

	} else if (item.style & ITEMDRAW_NOTEXT) {

		return m_NextPos++;

	}

	if (item.style & ITEMDRAW_DISABLED)

	{

		m_BufferText.append(g_RadioNumTable[m_NextPos]);

		m_BufferText.append(item.display);

		m_BufferText.append("\n");

	} else {

		m_BufferText.append("->");

		m_BufferText.append(g_RadioNumTable[m_NextPos]);

		m_BufferText.append(item.display);

		m_BufferText.append("\n");

		keys |= (1<<(m_NextPos-1));

	}

	return m_NextPos++;

}

bool CRadioDisplay::CanDrawItem(unsigned int drawFlags)

{

	if ((drawFlags & ITEMDRAW_IGNORE) == ITEMDRAW_IGNORE)

	{

		return false;

	}

	if ((drawFlags & ITEMDRAW_DISABLED) && (drawFlags & ITEMDRAW_CONTROL))

	{

		return false;

	}

	return true;

}

void CRadioDisplay::SendRawDisplay(int client, unsigned int time)

{

	char buffer[4096];

	size_t len;

	len = UTIL_Format(buffer, sizeof(buffer), "%s\n%s", m_Title.c_str(), m_BufferText.c_str());

	cell_t players[1] = {client};

	int _sel_keys = (keys == 0) ? (1<<9) : keys;

	char *ptr = buffer;

	char save = 0;

	while (true)

	{

		if (len > 240)

		{

			save = ptr[240];

			ptr[240] = '\0';

		}

		bf_write *buffer = g_UserMsgs.StartMessage(g_ShowMenuId, players, 1, USERMSG_BLOCKHOOKS);

		buffer->WriteWord(_sel_keys);

		buffer->WriteChar(time ? time : -1);

		buffer->WriteByte( (len > 240) ? 1 : 0 );

		buffer->WriteString(ptr);

		g_UserMsgs.EndMessage();

		if (len > 240)

		{

			ptr[240] = save;

			ptr = &ptr[240];

			len -= 240;

		} else {

			break;

		}

	}

}

void CRadioDisplay::DeleteThis()

{

	delete this;

}

bool CRadioDisplay::SetSelectableKeys(unsigned int keymap)

{

	keys = (signed)keymap;

	return true;

}

CRadioMenu::CRadioMenu(IMenuHandler *pHandler, IdentityToken_t *pOwner) : 

CBaseMenu(pHandler, &g_RadioMenuStyle, pOwner)

{

}

bool CRadioMenu::SetExtOption(MenuOption option, const void *valuePtr)

{

	return false;

}

IMenuPanel *CRadioMenu::CreatePanel()

{

	return g_RadioMenuStyle.MakeRadioDisplay(this);

}

bool CRadioMenu::Display(int client, unsigned int time, IMenuHandler *alt_handler)

{

#if defined MENU_DEBUG

	g_Logger.LogMessage("[SM_MENU] CRadioMenu::Display(%p) (client %d) (time %d)",

		this,

		client,

		time);

#endif

	if (m_bCancelling)

	{

		return false;

	}

	return g_RadioMenuStyle.DoClientMenu(client, this, alt_handler ? alt_handler : m_pHandler, time);

}

void CRadioMenu::Cancel_Finally()

{

	g_RadioMenuStyle.CancelMenu(this);

}

const char *g_RadioNumTable[11] = 

{

	"0. ", "1. ", "2. ", "3. ", "4. ", "5. ", "6. ", "7. ", "8. ", "9. ", "0. "

};