add showquote & change categories to quotecategories

bot.rb

@@ -13,7 +13,7 @@ bot.message do |event|
 end
 
 bot.command :help do |event, *message|
-  event.author.pm("You've asked for help. In order not to flood the channel where you sent the command, I have sent the list of commands here, in your PMs. Enjoy! \n\n**Quote system**\n```;quote <category> - displays a quote from the category\n;addquote <category> <quote> - adds a quote into a category\n;categories - shows all categories```")
+  event.author.pm("You've asked for help. In order not to flood the channel where you sent the command, I have sent the list of commands here, in your PMs. Enjoy! \n\n**Quote system**\n```;quote <category> - displays a quote from the category\n;addquote <category> <quote> - adds a quote into a category\n;quotecategories - shows all categories\n;showquote <id> - shows the quote with the id provided```")
   event.message.delete
   nil
 end

systems/quote.rb

@@ -31,9 +31,19 @@ module QuoteSystem
     nil
   end
 
-  command :categories do |event, *message|
+  command :quotecategories do |event, *message|
     categories = db.execute("SELECT DISTINCT category FROM quotes")
     event.channel.send_message("**Categories**: #{categories[0..].join(' ')}")
     nil
   end
+
+  command :showquote do |event, *message|
+    quote = db.execute("SELECT * FROM quotes WHERE id = ?", [message[0]])
+    if quote == nil
+      event.channel.send_message("Quote doesn't exist")
+      return
+    end
+    event.channel.send_message("##{quote[0][0]}: #{quote[0][3]}")
+    nil
+  end
 end