Vk copy post to telegram channel

Technical requirement

Create telegram bot that will copy post from given VK user to the telegram channel after user will create new post.
The admin users can set pair of vk_user_id and telegram_channel_id.
1. User send vk_user_id. Validate it using VK API.
2. User send telegram_channel_id. Validate it using Telegram API.
3. After all validation, save to User table Vk account info and to Post table Last Post info.
Celery periodic task.
1. Every N-minutes start task to check new post for user.
2. If new post is ready send it to the telegram_channel and admin users.

Tools

aiogram - Asynchronious framework to create telegram bots
aiohttp - For creating Non-Blocking http client
aioredis - Asynchronious redis client
celery - Distributed Task Queue for periodic tasks
pydantic - For settings management
sentry - logging system
watchfiles - for reloading in development process
linters and formatters(mypy, flake8, isort, black, autoflake)

Run application

Using docker-compose
```
docker-compose up -d bot scheduler
```
Using shell
1. Install requirements.txt
```
poetry install
```
2. Run start script
```
./docker/start.sh
```

Deyloy application

Create .env file
Start using docker-compose
```
docker-compose up -d bot scheduler
```

Heroku setup

Login using heroku.
```
heroku login
```
Add new remote repository
```
heroku git:clone -a vk-copy-post-bot
```
Create new branch with Procfile, requirements.txt and runtime.txt.
Push change using custom branch
```
git push heroku deploy/heroku:master
```

Architecture

Application consists of three layers: handlers, services, database.

Handlers layer. Responsible for creating API route function, validation input user data.
Service layer. It's a place for all business logic and additional validation.
Database layer. Responsible for creating actual database queries and executing them.

WIP

Add sphinx documendation.
Check using clean code.