Yato was planned as a closed-source bot but after +6 months of having it running and +1 year of development I decided it was time to make it open to the community so here we are :)
Don't expect the code to have a good quality, I have learned what I know by myself, and I still have a lot of things to learn so if you want to improve something I appreciate all the pull requests.

Index:

1. Self hosting guide
2. Building the code by yourself
3. Bot features

First of all, a list of what you need to have:

• Java 14 or later installed on the machine you're going to run yato
• An app created at discord developer portal
• A MongoDB database (free tier of mongodb atlas it's ok for small bots)
• A Google application with youtube data api V3 enabled
• A spotify application (not in use by the moment but can be implemented in the future)
• Download Lavalink.jar (Lavalink is used to distribute the audio sending load)
• Download the latest yato release or build yato by yourself using the source code.

How to set up yato properly?

1. Put your yato-x.x_x.jar in a folder.
2. Download the example config files: database_example.json and config_example.json and remove the _example from the names.
3. Take a look at the content of the files, there is a few things that you need to configure:

{
  "bot-token": "", <- Here you need to put your discord app token
  "google-api-key": "", <- The google api key of the google app that you have created
  "spotify-client-id": "", <- The spotify client id of the app that you have created
  "spotify-secret": "", <- The spotify secret of the spotify app that you have created
  "bot-id": "483329776996712468", <- If of your bot user IMPORTANT, If you put a wrong id the audio will not be sent to discord
  "bot-game": "https://yato.fernandopal.es", <- Playing...
  "bot-shards": 1, <- Number of instances of the bot, I recommend you to put 1 for every ~1500 - 2000 guilds
  "bot-prefix": "y:", <- This will be the default prefix for the bot
  "bot-owners": [ <- Id's of all the users with FULL CONTROL over the bot commands and features
    "214829164253937674"
  ],
  "lavalink-nodes": [ <- Add your lavalink nodes here, must contain at least one
    "host:port@password"
  ],
  "dbl-token": "your top.gg token", <- Token obtained if your bot is on top.gg [OPTIONAL, needed just for votes]
  "haruna-url": "https://localhost", <- The url where your haruna server is listening [OPTIONAL, needed just for votes]
  "haruna-port": "6969", <- The port of that you have set on your haruna config [OPTIONAL, needed just for votes]
  "haruna-password": "your-password-here", <- The password of your haruna server [OPTIONAL, needed just for votes]
}

{
  "username": "yato", <- Database username
  "password": "supersafepassword", <- Database password
  "database-url": "yato-5kjsj.gcp.mongodb.net", <- Database connection url
  "database-name": "yato", <- Database name
  "url-args": "retryWrites=true&w=majority" <- Extra arguments for the database connection
}

{
  "port": 7263, <- Port that the bot will use to open the REST API server
  "auth-token": "RANDOM_STRING_HERE" <- Put a random string here that will be used for authentication on the api
}

When all of that is done you have everything prepared to run yato, the easiest way to run the bot is to install screen (sudo apt install screen) if you're running on a unix based system once screen is in your system follow the next steps:

1. Open a new screen with screen -S yato
2. Execute the yato-x.x_x.jar file with java -jar yato-x.x_x.jar
3. Detach the screen pressing Ctrl + A and then Ctrl + D
4. Each time you want to check the yato console you can join the screen using screen -x yato and exit of that screen doing the step 3 again

Requisites to compile the java code into a runnable yato.jar:

• JDK 14 installed into your computer
• Gradle installed into your computer

How do I build the yato.jar file?

1. Download or clone this repository
2. Join the root folder of the repository, yato-master
3. Execute the build.bat script if you're on windows, or the build.sh script if you're on a linux machine (those scripts only contain a single command, gradlew build so you can execute this instead if you want)
4. Now you should have a /yato-master/build/libs folder, there you can find the generated yato.jar

• HQ music playback
• Load balancing using Lavalink and the JDA sharding system
• Support for multiple audio sources (YouTube, SoundCloud, Vimeo, Twitch Streams, BandCamp, files on the internet)
• Youtube search
• Customisable prefix for each server
• Song Of The Day (Daily most played song)
• Customisable behaviour for some things
• And more