Holo is a Discord statistics bot that tracks user emoji usage. Holo is capable of tracking emojis from both messages and message reactions.

Current and relevant server emojis make for happy users!

Prefix: $, @mention

• Bot: about, help, ping
• Database: count, rate, recommend, users

• $count [@mention] [all|server|default]
  @mention
  Filter user. If omitted, defaults to include all server members.
  e.g. $count @Miku all
  all|server|default
  Filter emojis by type and list emojis by count in descending order.
  e.g. $count all

• $rate [@mention] [all|server|default]
  @mention
  Filter user. If omitted, defaults to include all server members.
  e.g. $rate @Miku all
  all|server|default
  Filter emojis by type and list emojis by count per day in descending order. e.g. $rate all

• $recommend
  Recommend unused emojis for removal by finding the intersection between the 10 lowest results of the count and rate commands.

• $users [:emoji:]
  :emoji:
  List emoji users by count in descending order.
  e.g. $users 🤔

Holo requires you to host her yourself! Read the following for setup instructions.

The following instructions assume you are signed in with a Google account.

Be aware that Firebase has a generous free plan for hobbyists but exceeding certain limits will stop your service for the month. If you're using Holo on a small server, you have almost nothing to worry about.

1. Go to Firebase.
2. Click GO TO CONSOLE, located on the site's navigation bar.
3. Create a new project.
4. Go to Database, located on the sidebar, and click the GET STARTED button.
   1. Under the DATA tab, take note of the database URL (e.g. https://YOUR-PROJECT-NAME-HERE.firebaseio.com/) associated with your project. You will need this later.
5. Go to the RULES tab and set your rules to the following:

// These rules don't allow anyone read or write access to your database
{
  "rules": {
    ".read": false,
    ".write": false
  }
}

6. On the sidebar, click the gear icon and go to Project settings.
7. Go to the SERVICE ACCOUNTS tab and click the GENERATE NEW PRIVATE KEY button. This will download a unique file containing Firebase Admin credentials.
8. Rename the file to serviceAccountKey.json.

Keep this serviceAccountKey.json credentials file private!

The following instructions assume you are signed in with a Discord account.

1. Go to Discord's My Apps page.
2. Create a new app.
3. Click the Create a Bot User button and confirm.
4. You can create an invitation link for your bot with https://discordapp.com/oauth2/authorize?client_id=YOUR_DISCORD_BOT_CLIENT_ID_HERE&scope=bot.
5. Click click to reveal to view your bot's token.

Keep your Discord bot token and any file containing it private!

1. Type git clone https://github.com/peterthehan/holo.git.
2. Type cd holo/ and npm install.
3. Move the serviceAccountKey.json file to the root of the src folder.
4. Create a new file named config.json at the root of the src folder. The file should contain the following:

{
  "token": "YOUR_DISCORD_BOT_TOKEN_HERE",
  "databaseURL": "YOUR_DATABASE_URL_HERE",
  "reaction_timeout": "30000",
  "pager_timeout": "60000",
  "prefix": "$",
  "owner_id": "YOUR_DISCORD_ACCOUNT_ID_HERE"
}

token is from the Discord Bot Setup section, step #5.

databaseURL is from the Firebase Setup section, step #4i.

reaction_timeout (in milliseconds) is how long Holo looks at each message for user reactions. Keep it somewhere between 15000 and 30000 for optimal performance.

pager_timeout (in milliseconds) is how long Holo looks at each command message for pagination. Keep it somewhere between 30000 and 60000 for optimal duration.

prefix is your preferred command prefix. If omitted, commands can be used by mentioning the bot in place of the command prefix. e.g. @Holo ping

owner_id is your Discord account ID. Navigate to User Settings and under the Appearance tab, enable Developer Mode. Right-click your name to open up the context menu which will display the option to Copy ID.

1. Type npm start or node src/index.js to run. Holo is ready to log!

{
  "guilds" : {
    "258167954913361930" : {
      "channels" : {
        "258167954913361930" : {
          "name" : "general"
        }
      },
      "emojis" : {
        "363631910787874819" : {
          "name" : "Haha",
          "url" : "https://cdn.discordapp.com/emojis/363631910787874819.png"
      },
      "messages" : {
        "2017-9" : {
          "emojis" : {
            "-Kw-LDqFOmFlHKZsoymH" : {
              "channel" : "258167954913361930",
              "identifier" : "363631910787874819",
              "isDefault" : false,
              "isReaction" : false,
              "timestamp" : 1507539348841,
              "user" : "206161807491072000"
            }
          }
        }
      },
      "name" : "cqdb",
      "url" : "https://cdn.discordapp.com/icons/258167954913361930/4cb15bdf376886559a8f8159d4aaa779.jpg"
    }
  },
  "users" : {
    "206161807491072000" : {
      "name" : "Miku#0039",
      "url" : "https://cdn.discordapp.com/avatars/206161807491072000/5720fe7b23f79105d764d6d1ca8cad88.png?size=2048"
    }
  }
}