#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;

//:TODO: immunity needs to self-check itself for redundancy in core

//:TODO: invalidating groups internally needs to check immunities

//:TODO: reparsing

static LogGroupError(const String:fmt[], {Handle,String,Float,_}:...)

{

	decl String:buffer[512];

	if (!g_LoggedFileName)

	{

		LogError("Error(s) detected parsing admin_groups.cfg:");

		g_LoggedFileName = true;

	}

	VFormat(buffer, sizeof(buffer), fmt, 2);

	LogError(" (%d) %s", ++g_ErrorCount, buffer);

}

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

{

	if (g_GroupState == GROUP_STATE_NONE)

	{

		if (StrEqual(name, "Groups"))

		{

			g_GroupState = GROUP_STATE_GROUPS;

		}

	} 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;

		}

	}

	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)

	{

		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 (value[i] < 'a' || value[i] > 'z')

					{

						continue;

					}

					flag = g_FlagLetters[value[i] - 'a'];

					if (flag == Admin_None)

					{

						continue;

					}

					SetAdmGroupAddFlag(g_CurGrp, flag, true);

				}

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

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

				if (StrEqual(value, "*"))

				{

					SetAdmGroupImmunity(g_CurGrp, Immunity_Global, true);

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

					SetAdmGroupImmunity(g_CurGrp, Immunity_Default, true);

				} else {

					/* If we can't find the group, we'll need to schedule a reparse */

					new GroupId:id = FindAdmGroup(value);

					if (id == INVALID_GROUP_ID)

					{

						SetAdmGroupImmuneFrom(g_CurGrp, id);

					} else {

						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"))

		{

			new GroupId:id = FindAdmGroup(value);

			if (id != INVALID_GROUP_ID)

			{

				SetAdmGroupImmuneFrom(g_CurGrp, id);

			} else {

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

			}

		}

	}

	return SMCParse_Continue;

}

public SMCResult:ReadGroups_EndSection(Handle:smc)

{

	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;

}

static InitializeGroupParser()

{

	if (g_hGroupParser == INVALID_HANDLE)

	{

		g_hGroupParser = SMC_CreateParser();

		SMC_SetReaders(g_hGroupParser,

					   ReadGroups_NewSection,

					   ReadGroups_KeyValue,

					   ReadGroups_EndSection);

	}

}

ReadGroups()

{

	new String:path[PLATFORM_MAX_PATH];

	InitializeGroupParser();

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

	/* Set states */

	g_GroupState = GROUP_STATE_NONE;

	g_LoggedFileName = false;

	g_ErrorCount = 0;

	g_CurGrp = INVALID_GROUP_ID;

	g_GroupPass = GROUP_PASS_FIRST;

	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)))

		{

			LogGroupError("%s", buffer);

		} else {

			LogGroupError("Fatal parse error");

		}

	}

}