/**
 * vim: set ts=4 :
 * =============================================================================
 * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.
 * =============================================================================
 *
 * This file is part of the SourceMod/SourcePawn SDK.
 *
 * 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: $Id$
 */

#if defined _sourcemod_included
 #endinput
#endif
#define _sourcemod_included

/**
 * Plugin public information.
 */
struct Plugin
{
   const String:name[],			/**< Plugin Name */
   const String:description[],	/**< Plugin Description */
   const String:author[],		/**< Plugin Author */
   const String:version[],		/**< Plugin Version */
   const String:url[],			/**< Plugin URL */
};

#include <core>
#include <float>
#include <vector>
#include <string>
#include <handles>
#include <functions>
#include <files>
#include <logging>
#include <timers>
#include <admin>
#include <keyvalues>
#include <dbi>
#include <lang>
#include <sorting>
#include <textparse>
#include <clients>
#include <console>
#include <events>
#include <bitbuffer>
#include <protobuf>
#include <usermessages>
#include <menus>
#include <halflife>
#include <adt>
#include <banning>
#include <commandfilters>
#include <nextmap>

enum APLRes
{
	APLRes_Success = 0,		/**< Plugin should load */
	APLRes_Failure,			/**< Plugin shouldn't load and should display an error */
	APLRes_SilentFailure	/**< Plugin shouldn't load but do so silently */
};

/**
 * Declare this as a struct in your plugin to expose its information.
 * Example:
 *
 * public Plugin:myinfo =
 * {
 *    name = "My Plugin",
 *    //etc
 * };
 */
public Plugin:myinfo;
 
/**
 * Called when the plugin is fully initialized and all known external references 
 * are resolved. This is only called once in the lifetime of the plugin, and is 
 * paired with OnPluginEnd().
 *
 * If any run-time error is thrown during this callback, the plugin will be marked 
 * as failed.
 *
 * It is not necessary to close any handles or remove hooks in this function.  
 * SourceMod guarantees that plugin shutdown automatically and correctly releases 
 * all resources.
 *
 * @noreturn
 */
forward OnPluginStart();

/**
 * @deprecated Use AskPluginLoad2() instead.
 * If a plugin contains both AskPluginLoad() and AskPluginLoad2(), the former will
 * not be called, but old plugins with only AskPluginLoad() will work.
 */
#pragma deprecated Use AskPluginLoad2() instead
forward bool:AskPluginLoad(Handle:myself, bool:late, String:error[], err_max);

/**
 * Called before OnPluginStart, in case the plugin wants to check for load failure.
 * This is called even if the plugin type is "private."  Any natives from modules are 
 * not available at this point.  Thus, this forward should only be used for explicit 
 * pre-emptive things, such as adding dynamic natives, setting certain types of load 
 * filters (such as not loading the plugin for certain games).
 * 
 * @note It is not safe to call externally resolved natives until OnPluginStart().
 * @note Any sort of RTE in this function will cause the plugin to fail loading.
 * @note If you do not return anything, it is treated like returning success. 
 * @note If a plugin has an AskPluginLoad2(), AskPluginLoad() will not be called.
 *
 *
 * @param myself	Handle to the plugin.
 * @param late		Whether or not the plugin was loaded "late" (after map load).
 * @param error		Error message buffer in case load failed.
 * @param err_max	Maximum number of characters for error message buffer.
 * @return			APLRes_Success for load success, APLRes_Failure or APLRes_SilentFailure otherwise
 */
forward APLRes:AskPluginLoad2(Handle:myself, bool:late, String:error[], err_max);

/**
 * Called when the plugin is about to be unloaded.
 *
 * @noreturn
 */
forward OnPluginEnd();

/**
 * Called when the plugin's pause status is changing.
 *
 * @param pause			True if the plugin is being paused, false otherwise.
 * @noreturn
 */
forward OnPluginPauseChange(bool:pause);

/**
 * Called before every server frame.  Note that you should avoid
 * doing expensive computations here, and you should declare large
 * local arrays using 'decl' instead of 'new'.
 */
forward OnGameFrame();

/**
 * Called when the map is loaded.
 *
 * @note This used to be OnServerLoad(), which is now deprecated.
 * Plugins still using the old forward will work.
 */
forward OnMapStart();

/**
 * Called right before a map ends.
 */
forward OnMapEnd();

/**
 * Called when the map has loaded, servercfgfile (server.cfg) has been 
 * executed, and all plugin configs are done executing.  This is the best
 * place to initialize plugin functions which are based on cvar data.  
 *
 * @note This will always be called once and only once per map.  It will be 
 * called after OnMapStart().
 *
 * @noreturn
 */
forward OnConfigsExecuted();

/**
 * This is called once, right after OnMapStart() but any time before 
 * OnConfigsExecuted().  It is called after the "exec sourcemod.cfg" 
 * command and all AutoExecConfig() exec commands have been added to 
 * the ServerCommand() buffer.
 *
 * If you need to load per-map settings that override default values, 
 * adding commands to the ServerCommand() buffer here will guarantee 
 * that they're set before OnConfigsExecuted().
 *
 * Unlike OnMapStart() and OnConfigsExecuted(), this is not called on 
 * late loads that occur after OnMapStart().
 *
 * @noreturn
 */
forward OnAutoConfigsBuffered();

/**
 * @deprecated Use OnConfigsExecuted() instead.
 */
#pragma deprecated Use OnConfigsExecuted() instead
forward OnServerCfg();

/**
 * Called after all plugins have been loaded.  This is called once for 
 * every plugin.  If a plugin late loads, it will be called immediately 
 * after OnPluginStart().
 */
forward OnAllPluginsLoaded();

/**
 * Returns the calling plugin's Handle.
 *
 * @return				Handle of the calling plugin.
 */
native Handle:GetMyHandle();

/**
 * Returns an iterator that can be used to search through plugins.
 *
 * @return				Handle to iterate with.  Must be closed via 
 * 						CloseHandle().
 * @error				Invalid Handle.
 */
native Handle:GetPluginIterator();

/**
 * Returns whether there are more plugins available in the iterator.
 *
 * @param iter			Handle to the plugin iterator.
 * @return				True on more plugins, false otherwise.
 * @error				Invalid Handle.
 */
native bool:MorePlugins(Handle:iter);

/**
 * Returns the current plugin in the iterator and advances the iterator.
 *
 * @param iter			Handle to the plugin iterator.
 * @return				Current plugin the iterator is at, before
 *						the iterator is advanced.
 * @error				Invalid Handle.
 */
native Handle:ReadPlugin(Handle:iter);

/**
 * Returns a plugin's status.
 *
 * @param plugin		Plugin Handle (INVALID_HANDLE uses the calling plugin).
 * @return				Status code for the plugin.
 * @error				Invalid Handle.
 */
native PluginStatus:GetPluginStatus(Handle:plugin);

/**
 * Retrieves a plugin's file name relative to the plugins folder.
 *
 * @param plugin		Plugin Handle (INVALID_HANDLE uses the calling plugin).
 * @param buffer		Buffer to the store the file name.
 * @param maxlength		Maximum length of the name buffer.
 * @noreturn
 * @error				Invalid Handle.
 */
native GetPluginFilename(Handle:plugin, String:buffer[], maxlength);

/**
 * Retrieves whether or not a plugin is being debugged.
 *
 * @param plugin		Plugin Handle (INVALID_HANDLE uses the calling plugin).
 * @return				True if being debugged, false otherwise.
 * @error				Invalid Handle.
 */
native bool:IsPluginDebugging(Handle:plugin);

/**
 * Retrieves a plugin's public info.
 *
 * @param plugin		Plugin Handle (INVALID_HANDLE uses the calling plugin).
 * @param info			Plugin info property to retrieve.
 * @param buffer		Buffer to store info in.
 * @param maxlength		Maximum length of buffer.
 * @return				True on success, false if property is not available.
 * @error				Invalid Handle.
 */
native bool:GetPluginInfo(Handle:plugin, PluginInfo:info, String:buffer[], maxlength);

/**
 * Finds a plugin by its order in the list from the "plugins list" server 
 * "sm" command.  You should not use this function to loop through all plugins, 
 * use the iterator instead.  Looping through all plugins using this native 
 * is O(n^2), whereas using the iterator is O(n).
 *
 * @param order_num		Number of the plugin as it appears in "sm plugins list".
 * @return				Plugin Handle on success, INVALID_HANDLE if no plugin 
 *						matches the given number.
 */
native Handle:FindPluginByNumber(order_num);

/**
 * Causes the plugin to enter a failed state.  An error will be thrown and
 * the plugin will be paused until it is unloaded or reloaded.
 *
 * For backwards compatibility, if no extra arguments are passed, no 
 * formatting is applied.  If one or more additional arguments is passed, 
 * the string is formatted using Format().  If any errors are encountered 
 * during formatting, both the format specifier string and an additional 
 * error message are written.
 *
 * This function does not return, and no further code in the plugin is 
 * executed.
 *
 * @param string		Format specifier string.
 * @param ...			Formatting arguments.
 * @noreturn
 * @error				Always throws SP_ERROR_ABORT.
 */
native SetFailState(const String:string[], any:...);

/**
 * Aborts the current callback and throws an error.  This function
 * does not return in that no code is executed following it.
 *
 * @param fmt		String format.
 * @param ...			Format arguments.
 * @noreturn
 * @error				Always!
 */
native ThrowError(const String:fmt[], any:...);

/**
 * Gets the system time as a unix timestamp.
 *
 * @param bigStamp		Optional array to store the 64bit timestamp in.
 * @return				32bit timestamp (number of seconds since unix epoch).
 */
native GetTime(bigStamp[2]={0,0});

/**
 * Produces a date and/or time string value for a timestamp.
 *
 * See this URL for valid parameters: 
 * http://cplusplus.com/reference/clibrary/ctime/strftime.html
 *
 * @param buffer		Destination string buffer.
 * @param maxlength		Maximum length of output string buffer.
 * @param format		Formatting rules (passing NULL_STRING will use the rules defined in sm_datetime_format).
 * @param stamp			Optional time stamp.
 * @noreturn
 * @error			Buffer too small or invalid time format.
 */
native FormatTime(String:buffer[], maxlength, const String:format[], stamp=-1);

/**
 * Loads a game config file.
 *
 * @param file			File to load.  The path must be relative to the 'gamedata' folder under the config folder 
 *					and the extension should be omitted.
 * @return			A handle to the game config file or INVALID_HANDLE in failure.
 */
native Handle:LoadGameConfigFile(const String:file[]);

/**
 * Returns an offset value.
 *
 * @param gc			Game config handle.
 * @param key			Key to retrieve from the offset section.
 * @return			An offset, or -1 on failure.
 */
native GameConfGetOffset(Handle:gc, const String:key[]);

/**
 * Gets the value of a key from the "Keys" section.
 *
 * @param gc			Game config handle.
 * @param key			Key to retrieve from the Keys section.
 * @param buffer		Destination string buffer.
 * @param maxlen		Maximum length of output string buffer.
 * @return				True if key existed, false otherwise.
 */
native bool:GameConfGetKeyValue(Handle:gc, const String:key[], String:buffer[], maxlen);

/**
 * Finds an address calculation in a GameConfig file,
 * performs LoadFromAddress on it as appropriate, then returns the final address.
 *
 * @param gameconf      GameConfig Handle, or INVALID_HANDLE to use sdktools.games.txt.
 * @param name          Name of the property to find.
 * @return              An address calculated on success, or 0 on failure.
 */
native Address:GameConfGetAddress(Handle:gameconf, const String:name[]);

/**
 * Returns the operating system's "tick count," which is a number of 
 * milliseconds since the operating system loaded.  This can be used
 * for basic benchmarks.
 *
 * @return				Tick count in milliseconds.
 */
native GetSysTickCount();

/**
 * Specifies that the given config file should be executed after plugin load.
 * OnConfigsExecuted() will not be called until the config file has executed, 
 * but it will be called if the execution fails.
 *
 * @param autoCreate	If true, and the config file does not exist, such a config
 *						file will be automatically created and populated with
 *						information from the plugin's registered cvars.
 * @param name			Name of the config file, excluding the .cfg extension.
 *						If empty, <plugin.filename.cfg> is assumed.
 * @param folder		Folder under cfg/ to use.  By default this is "sourcemod."
 * @noreturn
 */
native AutoExecConfig(bool:autoCreate=true, const String:name[]="", const String:folder[]="sourcemod");

/**
 * Registers a library name for identifying as a dependency to 
 * other plugins.
 *
 * @param name			Library name.
 * @noreturn
 */
native RegPluginLibrary(const String:name[]);

/**
 * Returns whether a library exists.  This function should be considered 
 * expensive; it should only be called on plugin to determine availability 
 * of resources.  Use OnLibraryAdded()/OnLibraryRemoved() to detect changes 
 * in optional resources.
 *
 * @param name			Library name of a plugin or extension.
 * @return				True if exists, false otherwise.
 */
native bool:LibraryExists(const String:name[]);

/**
 * Returns the status of an extension, by filename.
 *
 * @param name			Extension name (like "sdktools.ext").
 * @param error			Optional error message buffer.
 * @param maxlength		Length of optional error message buffer.
 * @return				-2 if the extension was not found.
 *						-1 if the extension was found but failed to load.
 * 						 0 if the extension loaded but reported an error.
 * 						 1 if the extension is running without error.
 */
native GetExtensionFileStatus(const String:name[], String:error[]="", maxlength=0);

/**
 * Called after a library is added that the current plugin references 
 * optionally. A library is either a plugin name or extension name, as 
 * exposed via its include file.
 *
 * @param name			Library name.
 */
forward OnLibraryAdded(const String:name[]);

/**
 * Called right before a library is removed that the current plugin references 
 * optionally.  A library is either a plugin name or extension name, as 
 * exposed via its include file.
 *
 * @param name			Library name.
 */
forward OnLibraryRemoved(const String:name[]);

#define MAPLIST_FLAG_MAPSFOLDER		(1<<0)		/**< On failure, use all maps in the maps folder. */
#define MAPLIST_FLAG_CLEARARRAY		(1<<1)		/**< If an input array is specified, clear it before adding. */
#define MAPLIST_FLAG_NO_DEFAULT		(1<<2)		/**< Do not read "default" or "mapcyclefile" on failure. */

/**
 * Loads a map list to an ADT Array.
 *
 * A map list is a list of maps from a file.  SourceMod allows easy configuration of 
 * maplists through addons/sourcemod/configs/maplists.cfg.  Each entry is given a 
 * name and a file (for example, "rtv" => "rtv.cfg"), or a name and a redirection 
 * (for example, "rtv" => "default").  This native will read a map list entry, 
 * cache the file, and return the list of maps it holds.  
 *
 * Serial change numbers are used to identify if a map list has changed.  Thus, if 
 * you pass a serial change number and it's equal to what SourceMod currently knows 
 * about the map list, then SourceMod won't reparse the file.
 *
 * If the maps end up being read from the maps folder (MAPLIST_FLAG_MAPSFOLDER), they 
 * are automatically sorted in alphabetical, ascending order.
 *
 * Arrays created by this function are temporary and must be freed via CloseHandle().
 * Modifying arrays created by this function will not affect future return values or 
 * or the contents of arrays returned to other plugins.
 *
 * @param array			Array to store the map list.  If INVALID_HANDLE, a new blank 
 *						array will be created.  The blocksize should be at least 16; 
 *						otherwise results may be truncated.  Items are added to the array 
 *						as strings.  The array is never checked for duplicates, and it is 
 *						not read beforehand.  Only the serial number is used to detect 
 *						changes.
 * @param serial		Serial number to identify last known map list change.  If -1, the 
 *						the value will not be checked.  If the map list has since changed, 
 *						the serial is updated (even if -1 was passed).  If there is an error 
 *						finding a valid maplist, then the serial is set to -1.
 * @param str			Config name, or "default" for the default map list.  Config names 
 *						should be somewhat descriptive.  For example, the admin menu uses 
 *						a config name of "admin menu".  The list names can be configured 
 *						by users in addons/sourcemod/configs/maplists.cfg.
 * @param flags			MAPLIST_FLAG flags.
 * @return				On failure:
 *						 INVALID_HANDLE is returned, the serial is set to -1, and the input 
 *						 array (if any) is left unchanged.
 *						On no change:
 						 INVALID_HANDLE is returned, the serial is unchanged, and the input 
 						 array (if any) is left unchanged.
 *						On success:
 *						 A valid array Handle is returned, containing at least one map string.  
 *						 If an array was passed, the return value is equal to the passed Array 
 *						 Handle.  If the passed array was not cleared, it will have grown by at 
 *						 least one item.  The serial number is updated to a positive number.
 * @error				Invalid array Handle that is not INVALID_HANDLE.
 */
native Handle:ReadMapList(Handle:array=INVALID_HANDLE,
						  &serial=-1,
						  const String:str[]="default",
						  flags=MAPLIST_FLAG_CLEARARRAY);
						  
/**
 * Makes a compatibility binding for map lists.  For example, if a function previously used 
 * "clam.cfg" for map lists, this function will insert a "fake" binding to "clam.cfg" that 
 * will be overridden if it's in the maplists.cfg file.
 *
 * @param name			Configuration name that would be used with ReadMapList().
 * @param file			Default file to use.
 * @noreturn
 */
native SetMapListCompatBind(const String:name[], const String:file[]);

/**
 * Called when a client has sent chat text.  This must return either true or 
 * false to indicate that a client is or is not spamming the server.
 *
 * The return value is a hint only.  Core or another plugin may decide 
 * otherwise.
 *
 * @param client		Client index.  The server (0) will never be passed.
 * @return				True if client is spamming the server, false otherwise.
 */
forward bool:OnClientFloodCheck(client);

/**
 * Called after a client's flood check has been computed.  This can be used 
 * by antiflood algorithms to decay/increase flooding weights.
 *
 * Since the result from "OnClientFloodCheck" isn't guaranteed to be the 
 * final result, it is generally a good idea to use this to play with other 
 * algorithms nicely.
 *
 * @param client		Client index.  The server (0) will never be passed.
 * @param blocked		True if client flooded last "say", false otherwise.
 * @noreturn
 */
forward OnClientFloodResult(client, bool:blocked);

/**
 * Feature types.
 */
enum FeatureType
{
	/**
	 * A native function call.
	 */
	FeatureType_Native,
	
	/**
	 * A named capability. This is distinctly different from checking for a
	 * native, because the underlying functionality could be enabled on-demand
	 * to improve loading time. Thus a native may appear to exist, but it might
	 * be part of a set of features that are not compatible with the current game
	 * or version of SourceMod.
	 */
	FeatureType_Capability
};

/**
 * Feature statuses.
 */
enum FeatureStatus
{
	/**
	 * Feature is available for use.
	 */
	FeatureStatus_Available,
	
	/**
	 * Feature is not available.
	 */
	FeatureStatus_Unavailable,
	
	/**
	 * Feature is not known at all.
	 */
	FeatureStatus_Unknown
};

/**
 * Returns whether "GetFeatureStatus" will work. Using this native
 * or this function will not cause SourceMod to fail loading on older versions,
 * however, GetFeatureStatus will only work if this function returns true.
 *
 * @return              True if GetFeatureStatus will work, false otherwise.
 */
stock bool:CanTestFeatures()
{
	return LibraryExists("__CanTestFeatures__");
}

/**
 * Returns whether a feature exists, and if so, whether it is usable.
 *
 * @param type          Feature type.
 * @param name          Feature name.
 * @return              Feature status.
 */
native FeatureStatus:GetFeatureStatus(FeatureType:type, const String:name[]);

/**
 * Requires that a given feature is available. If it is not, SetFailState()
 * is called with the given message.
 *
 * @param type          Feature type.
 * @param name          Feature name.
 * @param fmt           Message format string, or empty to use default.
 * @param ...           Message format parameters, if any.
 * @noreturn
 */
native RequireFeature(FeatureType:type, const String:name[],
                      const String:fmt[]="", any:...);

/**
 * Represents how many bytes we can read from an address with one load
 */
enum NumberType
{
    NumberType_Int8,
    NumberType_Int16,
    NumberType_Int32
};

enum Address
{
    Address_Null = 0,              //a typical invalid result when an address lookup fails
    Address_MinimumValid = 0x10000 //addresses below this value are considered invalid to use for Load/Store
};

/**
 * Load up to 4 bytes from a memory address.
 *
 * @param addr          Address to a memory location.
 * @param size          How many bytes should be read.
 * @return              The value that is stored at that address.
 */
native LoadFromAddress(Address:addr, NumberType:size);

/**
 * Store up to 4 bytes to a memory address.
 *
 * @param addr          Address to a memory location.
 * @param data          Value to store at the address.
 * @param size          How many bytes should be written.
 * @noreturn
 */
native StoreToAddress(Address:addr, data, NumberType:size); 

#include <helpers>
#include <entity>
#include <entity_prop_stocks>