add support for pinning and unpinning

messages get pinned in the same channel as the message was reacted to

bot.rb

@@ -3,11 +3,19 @@ require 'discordrb'
 
 bot = Discordrb::Bot.new token: ENV['DISCORD_TOKEN']
 
-EMOJI = '🔖'
+BOOKMARK_EMOJI = '🔖'
+PIN_EMOJI = '📌'
+
 TRIM_MESSAGE_LENGTH = 500
 
+def get_bot_token
+  "Bot #{ENV['DISCORD_TOKEN']}"
+end
+
 bot.reaction_add do |event|
-  next unless event.emoji.name == EMOJI
+  next unless [BOOKMARK_EMOJI, PIN_EMOJI].include? event.emoji.name
+
+  if(event.emoji.name == BOOKMARK_EMOJI)
     # extract data of the message's author
     message_author = event.message.author
     message_author_pfp = message_author.avatar_url 'png'
@@ -28,7 +36,19 @@ bot.reaction_add do |event|
       embed << Discordrb::Webhooks::EmbedField.new(name: 'Message (trimmed)', value: trimmed_msg)
       embed.timestamp = event.message.timestamp
     end
+  end
+
+  if(event.emoji.name == PIN_EMOJI)
+    Discordrb::API::Channel.pin_message(get_bot_token(), event.channel.id, event.message.id)
+  end
+
   nil # `event` is of type Respondable, so the return line of the block needs to be nil to prevent the bot sending something in the chhannel the reaction occured.
 end
 
+bot.reaction_remove do |event|
+  next unless event.emoji.name == PIN_EMOJI
+  Discordrb::API::Channel.unpin_message(get_bot_token(), event.channel.id, event.message.id)
+  nil
+end
+
 bot.run