/*
	Copyright © 2015-2016 Gluzskiy Alexandr (sss)

    This file is part of Unknown Download Manager (UDM).

    UDM is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    UDM 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 UDM.  If not, see <http://www.gnu.org/licenses/>.

*/


#ifndef MAIN_H_INCLUDED
#define MAIN_H_INCLUDED

#include <api_module_downloader.h>

#include "curl_download.h"


class downloader : public module_downloader
{
public:
		//core module api
		downloader();
		void load(core_api *a);
		const module_info_base &get_module_info();
		void set_module_settings(const std::map<std::string, setting_s> &settings); //will called with settings stored in config
		~downloader();
		//downloader module api
		int add_download(std::map<int, std::string> params); //add download, this function must return unique for current session and current downloader download id
		bool stop_download(int download_id); //stop download by id received via add_download, return true on success, false otherwise
		bool start_download(int download_id); //start download by id received via add_download, return true on success, false otherwise
		bool delete_download(int download_id, bool delete_data = false); //delete download by id received via add_download, if "delete_data" is set, also remove all downloaded data from storage, return true on success, false otherwise
		bool execute_action_on_download(int download_id, int action_id); //execute module defined action on download, by id received via add_download
		std::list<download_s> get_downloads(std::map<int, std::string> params = std::map<int, std::string>()); //this function must return list of downloads, additional options may be passed via params map
		download_s get_download(int download_id, std::map<int, std::string> params = std::map<int, std::string>()); //same as above, except this one is for single download, not a complete list
		//downloader metadata manipulations
		bool metadata_set(int download_id, std::map<std::string, std::string> metadata); //replace download metadata with provided one
		bool metadata_update(int download_id, std::map<std::string, std::string> metadata); //updated matching metadata entries, create non existent
		bool metadata_drop(int download_id, std::string var = std::string()); //remove all metadata if no variable specified, otherwise delete specified variable
		std::map<std::string, std::string> metadata_get(int download_id); //get download metadata
		std::string metadata_get(int download_id, std::string var); //get value of specified metadata variable

private:
		void on_modules_loaded();
		std::map<int, curl_download*> downloads; //map of id, download
};



#endif // MAIN_H_INCLUDED