.clubtransfer added, transfer ownership of your club

NadekoBot.Core/Modules/Xp/Club.cs

@@ -26,6 +26,19 @@ namespace NadekoBot.Modules.Xp
                 _client = client;
             }
 
+            [NadekoCommand, Usage, Description, Aliases]
+            public async Task ClubTransfer([Remainder]IUser newOwner)
+            {
+                var club = _service.TransferClub(Context.User, newOwner);
+
+                if(club != null)
+                    await ReplyConfirmLocalized("club_transfered", 
+                        Format.Bold(club.Name), 
+                        Format.Bold(newOwner.ToString())).ConfigureAwait(false);
+                else
+                    await ReplyErrorLocalized("club_transfer_failed").ConfigureAwait(false);
+            }
+
             [NadekoCommand, Usage, Description, Aliases]
             public async Task ClubAdmin([Remainder]IUser toAdmin)
             {

NadekoBot.Core/Modules/Xp/Services/ClubService.cs

@@ -51,6 +51,27 @@ namespace NadekoBot.Modules.Xp.Services
             return true;
         }
 
+        public ClubInfo TransferClub(IUser from, IUser newOwner)
+        {
+            ClubInfo club;
+            using (var uow = _db.UnitOfWork)
+            {
+                club = uow.Clubs.GetByOwner(from.Id);
+                var newOwnerUser = uow.DiscordUsers.GetOrCreate(newOwner);
+
+                if (club == null ||
+                    club.Owner.UserId != from.Id ||
+                    !club.Users.Contains(newOwnerUser))
+                    return null;
+
+                club.Owner.IsClubAdmin = true; // old owner will stay as admin
+                newOwnerUser.IsClubAdmin = true;
+                club.Owner = newOwnerUser;
+                uow.Complete();
+            }
+            return club;
+        }
+
         public bool ToggleAdmin(IUser owner, IUser toAdmin)
         {
             bool newState;
@@ -59,13 +80,13 @@ namespace NadekoBot.Modules.Xp.Services
                 var club = uow.Clubs.GetByOwner(owner.Id);
                 var adminUser = uow.DiscordUsers.GetOrCreate(toAdmin);
                 
-                if (club.OwnerId == adminUser.Id)
-                    return true;
-
                 if (club == null || club.Owner.UserId != owner.Id || 
                     !club.Users.Contains(adminUser))
                     throw new InvalidOperationException();
 
+                if (club.OwnerId == adminUser.Id)
+                    return true;
+
                 newState = adminUser.IsClubAdmin = !adminUser.IsClubAdmin;
                 uow.Complete();
             }

src/NadekoBot/_strings/ResponseStrings.en-US.json

@@ -925,5 +925,7 @@
   "administration_invalid": "Invalid / Can't be found ({0})",
   "administration_mass_kill_in_progress": "Mass Banning and Blacklisting of {0} users is in progress...",
   "administration_mass_kill_completed": "Mass Banning and Blacklisting of {0} users is complete.",
-  "searches_failed_finding_novel": "Can't find that novel. Make sure you've typed the exact full name, and that it exists on novelupdates.com"
+  "searches_failed_finding_novel": "Can't find that novel. Make sure you've typed the exact full name, and that it exists on novelupdates.com",
+  "xp_club_transfered": "Ownership of the club {0} has been transfered to {1}",
+  "xp_club_transfer_failed": "Transfer failed. You must be the club owner. Target must be a member of your club."
 }

src/NadekoBot/_strings/cmd/command_strings.json

@@ -2871,6 +2871,13 @@
       "{0}clubcreate b1nzy's friends"
     ]
   },
+  "clubtransfer": {
+    "Cmd": "clubtransfer",
+    "Desc": "Transfers the ownership of the club to another member of the club.",
+    "Usage": [
+      "{0}clubtransfer @b1nzy"
+    ]
+  },
   "clubinformation": {
     "Cmd": "clubinfo",
     "Desc": "Shows information about the club.",