• python-telegram-bot-api : as telegram bot API base
• vk_api by python273 : as vk API lib
• PostgreSQL : as database
• Heroku : as hosting

1. Run ./set_up.sh to setup enivornment
   
2. Then run while IFS= read -r line; do export $line; done < env_vars.txt to setup environment variables
   
   To run bot use ./start.sh

You can specify custom database, username, host, port and password in secrets.json

All environment variables you can edit in env_vars.txt.
Update-workers run every UPDATE_INTERVAL to update chats' photo and description. They are running from FROM hour to TO hour.
Example: FROM=12 TO=4 UPDATE_INTERVAL=25. Updates will be every 25 minutes from 12:00 to 04:00. From 04:00 to 12:00 worker will sleep.
You can specify FROM=0 TO=0 and worker will never sleep.

• MODE : dev for running on local machine or prod for running on heroku
• FROM : Update-worker start hour
• TO : Update-worker end hour
• UPDATE_INTERVAL : Update-worker update chats interval in minutes
• POOL_WORKERS : Count of update-workers that can run in one time (after update interval)
• REBRAND : Rebrand API key

• Text messages vk2tg and tg2vk
• Voice messages vk2tg and tg2vk
• Picture vk2tg tg2vk
• Video vk2tg tg2vk
• Documents tg2vk
• Video notes tg2vk
• Forwards vk2tg (In tg2vk it looks like simple messages)
• Audio messages vk2tg(title, artist name and duration) (tg2vk vk doesn't allow to upload music)
• Stickers vk2tg(in images) and tg2vk(in graffities)
• Graffities vk2tg(in images)
• Group chats in vk (you in tg chat -> write in vk group) (vk group write -> in your tg chat)

• Replies
• Message delete
• Forwards tg2vk
• Music tg2vk
• Documents vk2tg (file-picture implemented)
• Group chats in tg (tg group write -> in vk group) (tg group write -> in vk chat)