• Fill in the ./cfg/channelid with your channel ID and the ./cfg/channelname with your channel name for the bot, or else it can't help you with posting;
• Fill in the ./cfg/ownerid and ./cfg/adminsids your Telegram account ID (or else you can't use admin and post commands);
• Get a token and bot username from the @BotFather bot and fill in the file botkey.h;
• Build bot via ./build.sh (or directly run the cmake in output directory with arguments);
• Run in shell / cron / .sh-script / etc.
• Have fun!

• C++14 (you also could try to build with C++11 compiler);
• cmake;
• curl;
• nlohmann json (file json.hpp);

• /addadmin - adds a new admin for your channel. The bot will ask you user ID or @username of new admin. This user can post messages to your channel using your post command;
• /cancel - cancels current command;
• /removeadmin - removes admin from list. The bot will ask you user ID or @username of admin. Use the /cancel if you don't want to remove admin;
• post command (default /post, see "Customizing Post Command" for change its name) - create a new post. This command is available only for users which user id is written in line of file ./cfg/adminsids or @username is written in line of file ./cfg/adminsnames. After using that command the bot will ask you for a message. So far it supports image messages, possible in future in will support any groups of messages.

You can change the post command name writing the quoted string into the ./cfg/postcommandname file.