/*
 * Copyright (C) 2004-2013 ZNC, see the NOTICE file for details.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _MAIN_H
#define _MAIN_H

#include <znc/zncconfig.h>
#include <znc/version.h>

extern bool ZNC_NO_NEED_TO_DO_ANYTHING_ON_MODULE_CALL_EXITER;
#define NOTHING &ZNC_NO_NEED_TO_DO_ANYTHING_ON_MODULE_CALL_EXITER

#define ALLMODULECALL(macFUNC, macEXITER)                                     \
	do {                                                                  \
		CModules& GMods = CZNC::Get().GetModules();             \
		bool bAllExit = false;                                       \
		if (GMods.macFUNC) {                                          \
			bAllExit = true;                                            \
		} else {                                                      \
			const map<CString, CUser*>& mUsers =                  \
				CZNC::Get().GetUserMap();                     \
			map<CString, CUser*>::const_iterator it;              \
			for (it = mUsers.begin(); it != mUsers.end(); ++it) { \
				CModules& UMods = it->second->GetModules();   \
				if (UMods.macFUNC) {                          \
					bAllExit = true;               \
					break;                                     \
				}                                             \
				const vector<CIRCNetwork*>& mNets =           \
					it->second->GetNetworks();            \
				vector<CIRCNetwork*>::const_iterator it2;     \
				for (it2 = mNets.begin(); it2 != mNets.end(); ++it2) { \
					CModules& NMods = (*it2)->GetModules(); \
					if (NMods.macFUNC) {                  \
						bAllExit = true;                    \
						break;                            \
					}                                     \
				}                                             \
				if (bAllExit) break;                             \
			}                                                     \
		}                                                             \
		if (bAllExit) *macEXITER = true;                                     \
	} while (false)

#define _GLOBALMODULECALL(macFUNC, macUSER, macNETWORK, macCLIENT, macEXITER)   \
	do {                                                       \
		CModules& GMods = CZNC::Get().GetModules();  \
		CUser* pOldGUser = GMods.GetUser();                \
		CIRCNetwork* pOldGNetwork = GMods.GetNetwork();    \
		CClient* pOldGClient = GMods.GetClient();          \
		GMods.SetUser(macUSER);                            \
		GMods.SetNetwork(macNETWORK);                      \
		GMods.SetClient(macCLIENT);                        \
		if (GMods.macFUNC) {                               \
			GMods.SetUser(pOldGUser);                  \
			GMods.SetNetwork(pOldGNetwork);            \
			GMods.SetClient(pOldGClient);              \
			*macEXITER = true;       \
		}                                                  \
		GMods.SetUser(pOldGUser);                          \
		GMods.SetNetwork(pOldGNetwork);            \
		GMods.SetClient(pOldGClient);                      \
	} while (false)

#define _USERMODULECALL(macFUNC, macUSER, macNETWORK, macCLIENT, macEXITER)  \
	do {                                                              \
		assert(macUSER != NULL);                                  \
		bool bGlobalExited = false;                                \
		_GLOBALMODULECALL(macFUNC, macUSER, macNETWORK, macCLIENT, &bGlobalExited); \
		if (bGlobalExited) {                                       \
			*macEXITER = true;                \
			break;                                             \
		}                                                         \
		CModules& UMods = macUSER->GetModules();                  \
		CIRCNetwork* pOldUNetwork = UMods.GetNetwork();           \
		CClient* pOldUClient = UMods.GetClient();                 \
		UMods.SetNetwork(macNETWORK);                             \
		UMods.SetClient(macCLIENT);                               \
		if (UMods.macFUNC) {                                      \
			UMods.SetNetwork(pOldUNetwork);                   \
			UMods.SetClient(pOldUClient);                     \
			*macEXITER = true;                \
		}                                                         \
		UMods.SetNetwork(pOldUNetwork);                           \
		UMods.SetClient(pOldUClient);                             \
	} while (false)

#define NETWORKMODULECALL(macFUNC, macUSER, macNETWORK, macCLIENT, macEXITER)  \
	do {                                                                   \
		assert(macUSER != NULL);                                       \
		bool bUserExited = false;                                   \
		_USERMODULECALL(macFUNC, macUSER, macNETWORK, macCLIENT, &bUserExited); \
		if (bUserExited) {                                         \
			*macEXITER = true;                 \
			break;                                                \
		}                                                            \
		if (macNETWORK != NULL) {                                      \
			CModules& NMods = macNETWORK->GetModules();            \
			CClient* pOldNClient = NMods.GetClient();              \
			NMods.SetClient(macCLIENT);                            \
			if (NMods.macFUNC) {                                   \
				NMods.SetClient(pOldNClient);                  \
				*macEXITER = true;              \
			}                                                      \
			NMods.SetClient(pOldNClient);                          \
		}                                                              \
	} while (false)

#define GLOBALMODULECALL(macFUNC, macEXITER) \
	_GLOBALMODULECALL(macFUNC, NULL, NULL, NULL, macEXITER)

#define USERMODULECALL(macFUNC, macUSER, macCLIENT, macEXITER) \
	_USERMODULECALL(macFUNC, macUSER, NULL, macCLIENT, macEXITER)

/** @mainpage
 *  Welcome to the API documentation for ZNC.
 *
 *  To write your own module, you should start with writing a new class which
 *  inherits from CModule. Use #MODCONSTRUCTOR for the module's constructor and
 *  call #MODULEDEFS at the end of your source file.
 *  Congratulations, you just wrote your first module. <br>
 *  For global modules, the procedure is similar. Instead of #MODULEDEFS call
 *  #GLOBALMODULEDEFS.
 *
 *  If you want your module to actually do something, you should override some
 *  of the hooks from CModule. These are the functions whose names start with
 *  "On". They are called when the associated event happens.
 *
 *  Feel free to also look at existing modules.
 */

#endif // !_MAIN_H