/**

 * vim: set ts=4 :

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

 * SourceMod Admin File Reader Plugin

 * Reads the admin_groups.cfg file.  Do not compile this directly.

 *

 * SourceMod (C)2004-2008 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: $Id$

 */

#define GROUP_STATE_NONE		0

#define GROUP_STATE_GROUPS		1

#define GROUP_STATE_INGROUP		2

#define GROUP_STATE_OVERRIDES	3

#define GROUP_PASS_FIRST		1

#define GROUP_PASS_SECOND		2

static Handle:g_hGroupParser = INVALID_HANDLE;

static GroupId:g_CurGrp = INVALID_GROUP_ID;

static g_GroupState = GROUP_STATE_NONE;

static g_GroupPass = 0;

static bool:g_NeedReparse = false;

public SMCResult:ReadGroups_NewSection(Handle:smc, const String:name[], bool:opt_quotes)

{

	if (g_IgnoreLevel)

	{

		g_IgnoreLevel++;

		return SMCParse_Continue;

	}

	if (g_GroupState == GROUP_STATE_NONE)

	{

		if (StrEqual(name, "Groups"))

		{

			g_GroupState = GROUP_STATE_GROUPS;

		} else {

			g_IgnoreLevel++;

		}

	} else if (g_GroupState == GROUP_STATE_GROUPS) {

		if ((g_CurGrp = CreateAdmGroup(name)) == INVALID_GROUP_ID)

		{

			g_CurGrp = FindAdmGroup(name);

		}

		g_GroupState = GROUP_STATE_INGROUP;

	} else if (g_GroupState == GROUP_STATE_INGROUP) {

		if (StrEqual(name, "Overrides"))

		{

			g_GroupState = GROUP_STATE_OVERRIDES;

		} else {

			g_IgnoreLevel++;

		}

	} else {

		g_IgnoreLevel++;

	}

	return SMCParse_Continue;

}

public SMCResult:ReadGroups_KeyValue(Handle:smc, 

										const String:key[], 

										const String:value[], 

										bool:key_quotes, 

										bool:value_quotes)

{

	if (g_CurGrp == INVALID_GROUP_ID

		|| g_IgnoreLevel)

	{

		return SMCParse_Continue;

	}

	new AdminFlag:flag;

	if (g_GroupPass == GROUP_PASS_FIRST)

	{

		if (g_GroupState == GROUP_STATE_INGROUP)

		{

			if (StrEqual(key, "flags"))

			{

				new len = strlen(value);

				for (new i=0; i<len; i++)

				{

					if (!FindFlagByChar(value[i], flag))

					{

						continue;

					}

					SetAdmGroupAddFlag(g_CurGrp, flag, true);

				}

			} else if (StrEqual(key, "immunity")) {

				g_NeedReparse = true;

			}

		} else if (g_GroupState == GROUP_STATE_OVERRIDES) {

			new OverrideRule:rule = Command_Deny;

			if (StrEqual(value, "allow", false))

			{

				rule = Command_Allow;

			}

			if (key[0] == '@')

			{

				AddAdmGroupCmdOverride(g_CurGrp, key[1], Override_CommandGroup, rule);

			} else {

				AddAdmGroupCmdOverride(g_CurGrp, key, Override_Command, rule);

			}

		}

	} else if (g_GroupPass == GROUP_PASS_SECOND

			   && g_GroupState == GROUP_STATE_INGROUP) {

		/* Check for immunity again, core should handle double inserts */

		if (StrEqual(key, "immunity"))

		{

			/* If it's a value we know about, use it */

			if (StrEqual(value, "*"))

			{

				SetAdmGroupImmunityLevel(g_CurGrp, 2);

			} else if (StrEqual(value, "$")) {

				SetAdmGroupImmunityLevel(g_CurGrp, 1);

			} else {

				new level;

				if (StringToIntEx(value, level))

				{

					SetAdmGroupImmunityLevel(g_CurGrp, level);

				} else {

					new GroupId:id;

					if (value[0] == '@')

					{

						id = FindAdmGroup(value[1]);

					} else {

						id = FindAdmGroup(value);

					}

					if (id != INVALID_GROUP_ID)

					{

						SetAdmGroupImmuneFrom(g_CurGrp, id);

					} else {

						ParseError("Unable to find group: \"%s\"", value);

					}

				}

			}

		}

	}

	return SMCParse_Continue;

}

public SMCResult:ReadGroups_EndSection(Handle:smc)

{

	/* If we're ignoring, skip out */

	if (g_IgnoreLevel)

	{

		g_IgnoreLevel--;

		return SMCParse_Continue;

	}

	if (g_GroupState == GROUP_STATE_OVERRIDES)

	{

		g_GroupState = GROUP_STATE_INGROUP;

	} else if (g_GroupState == GROUP_STATE_INGROUP) {

		g_GroupState = GROUP_STATE_GROUPS;

		g_CurGrp = INVALID_GROUP_ID;

	} else if (g_GroupState == GROUP_STATE_GROUPS) {

		g_GroupState = GROUP_STATE_NONE;

	}

	return SMCParse_Continue;

}

public SMCResult:ReadGroups_CurrentLine(Handle:smc, const String:line[], lineno)

{

	g_CurrentLine = lineno;

	return SMCParse_Continue;

}

static InitializeGroupParser()

{

	if (g_hGroupParser == INVALID_HANDLE)

	{

		g_hGroupParser = SMC_CreateParser();

		SMC_SetReaders(g_hGroupParser,

					   ReadGroups_NewSection,

					   ReadGroups_KeyValue,

					   ReadGroups_EndSection);

		SMC_SetRawLine(g_hGroupParser, ReadGroups_CurrentLine);

	}

}

static InternalReadGroups(const String:path[], pass)

{

	/* Set states */

	InitGlobalStates();

	g_GroupState = GROUP_STATE_NONE;

	g_CurGrp = INVALID_GROUP_ID;

	g_GroupPass = pass;

	g_NeedReparse = false;

	new SMCError:err = SMC_ParseFile(g_hGroupParser, path);

	if (err != SMCError_Okay)

	{

		decl String:buffer[64];

		if (SMC_GetErrorString(err, buffer, sizeof(buffer)))

		{

			ParseError("%s", buffer);

		} else {

			ParseError("Fatal parse error");

		}

	}

}

ReadGroups()

{

	InitializeGroupParser();

	BuildPath(Path_SM, g_Filename, sizeof(g_Filename), "configs/admin_groups.cfg");

	InternalReadGroups(g_Filename, GROUP_PASS_FIRST);

	if (g_NeedReparse)

	{

		InternalReadGroups(g_Filename, GROUP_PASS_SECOND);

	}

}