/*******************************************************************************
 * libresapi/api/RsControlModule.h                                             *
 *                                                                             *
 * LibResAPI: API for local socket server                                      *
 *                                                                             *
 * Copyright 2018 by Retroshare Team <retroshare.team@gmail.com>               *
 *                                                                             *
 * This program is free software: you can redistribute it and/or modify        *
 * it under the terms of the GNU Affero General Public License as              *
 * published by the Free Software Foundation, either version 3 of the          *
 * License, or (at your option) any later version.                             *
 *                                                                             *
 * 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 Affero General Public License for more details.                         *
 *                                                                             *
 * You should have received a copy of the GNU Affero General Public License    *
 * along with this program. If not, see <https://www.gnu.org/licenses/>.       *
 *                                                                             *
 *******************************************************************************/
#pragma once

#include <util/rsthreads.h>
#include <util/cxx11retrocompat.h>
#include <retroshare/rsnotify.h>
#include "api/ResourceRouter.h"

namespace resource_api{

class StateTokenServer;
class ApiServer;

// resource api module to control accounts, startup and shutdown of retroshare
// - this module handles everything, no things are required from outside
// - exception: users of this module have to create an api server and register this module
// tasks:
// - show, import, export and create private pgp keys
// - show existing and create new locations
// - load certificate, startup retroshare
// - handle password callback
// - confirm plugin loading
// - shutdown retroshare
class RsControlModule: public ResourceRouter, NotifyClient, private RsSingleJobThread
{
public:
    enum RunState { WAITING_INIT, FATAL_ERROR, WAITING_ACCOUNT_SELECT, WAITING_STARTUP, RUNNING_OK, RUNNING_OK_NO_FULL_CONTROL};

    // ApiServer will be called once RS is started, to load additional api modules
    // full_control: set to true if this module should handle rsinit and login
    // set to false if rsinit is handled by the Qt gui
    RsControlModule(int argc, char **argv, StateTokenServer* sts, ApiServer* apiserver, bool full_control);
    ~RsControlModule();

    // returns true if the process should terminate
    bool processShouldExit();

	// returns the current state of the software booting process
	RunState runState() const { return mRunState ; }

	// from NotifyClient
	virtual bool askForPassword(const std::string &title, const std::string& key_details, bool prev_is_bad , std::string& password,bool& canceled) override;
	virtual bool askForDeferredSelfSignature(const void *data, const uint32_t len, unsigned char *sign, unsigned int *signlen,int& signature_result, std::string reason = "") override;

	virtual bool requestShutdown();

protected:
    // from RsThread
    // wee need a thread to call into things which block like askForPassword()
    virtual void run();

private:
    void handleRunState(Request& req, Response& resp);
    void handleIdentities(Request& req, Response& resp);
    void handleLocations(Request& req, Response& resp);
    void handlePassword(Request& req, Response& resp);
    void handleLogin(Request& req, Response& resp);
    void handleShutdown(Request& req, Response& resp);
    void handleImportPgp(Request& req, Response& resp);
    void handleCreateLocation(Request& req, Response& resp);

    void setRunState(RunState s, std::string errstr = "");
    // for startup
    int argc;
    char **argv;

    StateTokenServer* const mStateTokenServer;
    ApiServer* const mApiServer;

    RsMutex mExitFlagMtx;
    bool mProcessShouldExit;

    RsMutex mDataMtx;

    StateToken mStateToken; // one state token for everything, to make life easier

    RunState mRunState;
    std::string mLastErrorString;

    // id of the account to load
    // null when no account was selected
    RsPeerId mLoadPeerId;
    bool mAutoLoginNextTime;

    // to notify that a password callback is waiting
    // to answer the request, clear the flag and set the password
    bool mWantPassword;
	bool mPrevIsBad;
	int mCountAttempts;
    std::string mTitle;
    std::string mKeyName;
    std::string mPassword;
    // for ssl cert generation:
    // we know the password already, so we want to avoid to rpompt the user
    // we store the password in this variable, it has higher priority than the normal password variable
    // it is also to avoid a lock, when we make a synchronous call into librs, like in ssl cert generation
    std::string mFixedPassword;
};

} // namespace resource_api