Make birthdays add/deleteable by self

DiscoBot/bdaygreet/BDayGreet.cs

@@ -115,23 +115,25 @@ namespace DiscoBot.bdaygreet
         private async Task HandleBDayAddCommand(SocketMessage msg, string[] parameters)
         {
             var gauthor = guild.Users.Where(u => u.Id == msg.Author.Id).Single();
-            if(!gauthor.GuildPermissions.Administrator)
-            {
-                await msg.Channel.SendMessageAsync("Sorry only administrators can add birthdays :(");
-                return;
-            }
-            var gchan = msg.Channel as IGuildChannel;
             string name = parameters[1];
             string date = parameters[2];
             SocketGuildUser user;
-            try {
+            try
+            {
                 var id = MentionUtils.ParseUser(name);
                 user = guild.Users.Where(u => u.Id == id).Single();
-            } catch(Exception)
+            }
+            catch (Exception)
             {
                 await msg.Channel.SendMessageAsync("I can't find user " + name + " so I can't add them.");
                 return;
             }
+            if (gauthor.Id != user.Id && !gauthor.GuildPermissions.Administrator)
+            {
+                await msg.Channel.SendMessageAsync("Only administrators can add arbitrary birthdays. You can add your own though! :)");
+                return;
+            }
+            var gchan = msg.Channel as IGuildChannel;
             DateTimeOffset d;
             try {
                 d = DateTimeOffset.ParseExact(date,new string[] { "dd.MM.", "d.MM.", "dd.M", "d.M." }, null, DateTimeStyles.AssumeUniversal);
@@ -201,13 +203,14 @@ namespace DiscoBot.bdaygreet
         private async Task HandleBDayDelCommand(SocketMessage msg, string[] parameters)
         {
             var gauthor = guild.Users.Where(u => u.Id == msg.Author.Id).Single();
-            if (!gauthor.GuildPermissions.Administrator)
+            
+            var gchan = msg.Channel as IGuildChannel;
+            string tag = ((IModule)this).ConcatParameters(parameters[1..]);
+            if (tag != msg.Author.Username+"#"+msg.Author.DiscriminatorValue && !gauthor.GuildPermissions.Administrator)
             {
-                await msg.Channel.SendMessageAsync("Sorry only administrators can delete birthdays :(");
+                await msg.Channel.SendMessageAsync("Only administrators can delete arbitrary birthdays. You can delete your own...");
                 return;
             }
-            var gchan = msg.Channel as IGuildChannel;
-            string tag = ((IModule)this).ConcatParameters(parameters[1..]);
             try
             {
                 var b = bdayGreetContext.BDays.Where(b => b.DiscordTag == tag).Single();