/**
	This file is a part of r0nk, atlas_moon, and rexy's matrix client
	Copyright (C) 2019 rexy712

	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 <http://www.gnu.org/licenses/>.
*/

#ifndef MATRIX_CLIENT_HPP
#define MATRIX_CLIENT_HPP

#include "raii/string.hpp"
#include "raii/rjp_string.hpp"
#include "raii/filerd.hpp"
#include "matrix/session_info.hpp"
#include "matrix/upload_info.hpp"
#include "matrix/connection.hpp"
#include "matrix/roomcxn.hpp"
#include <vector> //vector
#include <memory> //shared_ptr
#include <cstdlib> //size_t

namespace matrix{
	//Class to interact with the homeserver of the logged in user.
	//Shares state with the spawning session.
	class client : public connection
	{
	public:
		client(const std::shared_ptr<internal::session_info>&);

		//Copy and move ctor
		client(const client& b) = default;
		client(client&& b) = default;
		//Dtor
		~client(void) = default;

		//Copy and move assignment
		client& operator=(const client&) = default;
		client& operator=(client&&) = default;

		/*
			* NOT thread safe.
			* Returns: the current access token.
		*/
		const raii::rjp_string& access_token(void)const;
		/*
			* NOT thread safe
			* Returns: the logged in user's userid.
		*/
		const raii::rjp_string& userid(void)const;
		/*
			* NOT thread safe
			* Returns: the current useragent.
		*/
		const raii::string& useragent(void)const;


		/*
			* Sets the display name on the homeserver.
			* Note name must be safe to be placed in a json string.
			* Returns: true if the operation was successful.
		*/
		bool set_display_name(const raii::string_base&);
		/*
			* Sets the url of the user's profile picture on the homeserver.
			* Note url must be safe to be placed in a json string.
			* Returns: true if the operation was successful.
		*/
		bool set_profile_picture(const raii::string_base&);


		/*
			* Gets the display name of the logged in user from the homeserver.
			* Returns: the display name on success, an empty string on failure.
		*/
		raii::rjp_string get_display_name(void)const;
		/*
			* Gets the profile picture url of the logged in user from the homeserver.
			* Returns: the profile picture url on success, an empty string on failure.
		*/
		raii::rjp_string get_profile_picture(void)const;
		/*
			* Lookup a room id given a room alias.
			* Returns: the room id of the associated room on success, empty string on failure.
		*/
		raii::rjp_string room_alias_to_id(const raii::string_base& alias)const;

		/*
			* Get a list of rooms the logged in user is a member of.
			* Returns: a vector of room id strings.
		*/
		std::vector<raii::rjp_string> list_rooms(void)const;

		/*
			* Create a new room on the logged in user's homeserver. Assign an alias to the room.
			* Returns: the room id of the newly created room on success, an empty string on failure.
		*/
		raii::rjp_string create_room(const raii::string_base& name, const raii::string_base& alias)const;

		/*
			* Create a new matrix::roomcxn object for the given roomid.
			* The roomcxn will share login information with this client. Note that changing useragent,
			* access token, or homeserver after creating a roomcxn MUST be synchronized between threads.
			* Returns: a new matrix::roomcxn for the given roomid.
		*/
		roomcxn spawn_room(const raii::string_base& roomid)const;
		roomcxn spawn_room(raii::string&& roomid)const;


		//NOTE alias equivalents just give the uploaded file a name other than the filename.
		/*
			* Upload a file as a raw file.
			* Takes filename as argument.
			* Returns: file_info struct containing the url of the file on the homeserver.
			* Note check the file_info::fileurl field to check if the upload succeeded.
		*/
		file_info upload_file(const raii::string_base& filename)const;
		file_info upload_file(const raii::string_base& filename, const raii::string_base& alias)const;

		/*
			* Upload a file as an image.
			* Note: requires FreeImagePlus to treat the file as an image, otherwise will just upload as a raw file.
			* Returns: image_info struct containing the url of the image on the homeserver.
			* Note check the image_info::fileurl field to check if the upload succeeded.
		*/
		image_info upload_image(const raii::string_base& filename)const;
		image_info upload_image(const raii::string_base& filename, const raii::string_base& alias)const;

		/*
			* Upload a file as a video.
			* Note: requires ffmpeg to treat the file as a video, otherwise will just upload as a raw file.
			* Returns: video_info struct containing the url of the image on the homeserver.
			* Note check the video_info::fileurl field to check if the upload succeeded.
		*/
		video_info upload_video(const raii::string_base& filename)const;
		video_info upload_video(const raii::string_base& filename, const raii::string_base& alias)const;
		/*
			* Upload a file as an audio file.
			* Note: requires ffmpeg to treat the file as a audio, otherwise will just upload as a raw file.
			* Returns: audio_info struct containing the url of the image on the homeserver.
			* Note check the audio_info::fileurl field to check if the upload succeeded.
		*/
		audio_info upload_audio(const raii::string_base& filename)const;
		audio_info upload_audio(const raii::string_base& filename, const raii::string_base& alias)const;

	private:
		raii::rjp_string _upload_file(raii::filerd& fp, const raii::curl_llist& header)const;
	};
}

#endif