added user filtering

src/BSLManager/App.cs

@@ -5,6 +5,8 @@ using System.Threading.Tasks;
 using BirdsiteLive.DAL.Contracts;
 using BirdsiteLive.DAL.Models;
 using BirdsiteLive.Moderation.Actions;
+using BSLManager.Domain;
+using BSLManager.Tools;
 using Terminal.Gui;
 
 namespace BSLManager
@@ -14,8 +16,7 @@ namespace BSLManager
         private readonly IFollowersDal _followersDal;
         private readonly IRemoveFollowerAction _removeFollowerAction;
 
-        private List<string> _displayableUserList = new List<string>();
-        private List<Follower> _sourceUserList = new List<Follower>();
+        private readonly FollowersListState _state = new FollowersListState();
 
         #region Ctor
         public App(IFollowersDal followersDal, IRemoveFollowerAction removeFollowerAction)
@@ -69,10 +70,10 @@ namespace BSLManager
             
             RetrieveUserList();
 
-            var list = new ListView(_displayableUserList)
+            var list = new ListView(_state.GetDisplayableList())
             {
                 X = 1,
-                Y = 2,
+                Y = 3,
                 Width = Dim.Fill(),
                 Height = Dim.Fill()
             };
@@ -96,7 +97,8 @@ namespace BSLManager
 
                     var dialog = new Dialog("Delete", 60, 18, cancel, ok);
 
-                    var name = new Label($"User: {_displayableUserList[el]}")
+                    var follower = _state.GetElementAt(el);
+                    var name = new Label($"User: @{follower.Acct}@{follower.Host}")
                     {
                         X = 1,
                         Y = 1,
@@ -121,9 +123,29 @@ namespace BSLManager
                 }
             };
 
-            // Add some controls, 
+            var listingFollowersLabel = new Label(1, 0, "Listing followers");
+            var filterLabel = new Label("Filter: ") { X = 1, Y = 1 };
+            var filterText = new TextField("")
+            {
+                X = Pos.Right(filterLabel),
+                Y = 1,
+                Width = 40
+            };
+
+            filterText.KeyDown += _ =>
+            {
+                var text = filterText.Text.ToString();
+                if (_.KeyEvent.Key == Key.Enter && !string.IsNullOrWhiteSpace(text))
+                {
+                    _state.FilterBy(text);
+                    ConsoleGui.RefreshUI();
+                }
+            };
+
             win.Add(
-                new Label(1, 0, "Listing followers"),
+                listingFollowersLabel,
+                filterLabel,
+                filterText,
                 list
             );
 
@@ -134,13 +156,11 @@ namespace BSLManager
         {
             Application.MainLoop.Invoke(async () =>
             {
-                var userToDelete = _sourceUserList[el];
-
+                var userToDelete = _state.GetElementAt(el);
                 await _removeFollowerAction.ProcessAsync(userToDelete);
+                _state.RemoveAt(el);
 
-                _sourceUserList.RemoveAt(el);
-                _displayableUserList.RemoveAt(el);
-                RefreshUI();
+                ConsoleGui.RefreshUI();
             });
         }
 
@@ -149,22 +169,9 @@ namespace BSLManager
             Application.MainLoop.Invoke(async () =>
             {
                 var followers = await _followersDal.GetAllFollowersAsync();
-                _sourceUserList = followers.OrderByDescending(x => x.Followings.Count).ToList();
-
-                _displayableUserList.Clear();
-                foreach (var follower in _sourceUserList)
-                {
-                    _displayableUserList.Add($"@{follower.Acct}@{follower.Host}     {follower.Followings.Count}");
-                }
-
-                RefreshUI();
+                _state.Load(followers.ToList());
+                ConsoleGui.RefreshUI();
             });
         }
-
-        private void RefreshUI()
-        {
-            typeof(Application).GetMethod("TerminalResized", BindingFlags.Static | BindingFlags.NonPublic)
-                .Invoke(null, null);
-        }
     }
 }

src/BSLManager/Domain/FollowersListState.cs

@@ -0,0 +1,82 @@
+using System.Collections.Generic;
+using System.Linq;
+using BirdsiteLive.DAL.Models;
+
+namespace BSLManager.Domain
+{
+    public class FollowersListState
+    {
+        private List<string> _displayableUserList = new List<string>();
+        private List<Follower> _sourceUserList = new List<Follower>();
+
+        private List<string> _filteredDisplayableUserList = new List<string>();
+        private List<Follower> _filteredSourceUserList = new List<Follower>();
+        
+        public void Load(List<Follower> followers)
+        {
+            _sourceUserList = followers.OrderByDescending(x => x.Followings.Count).ToList();
+           
+            ResetLists();
+        }
+
+        private void ResetLists()
+        {
+            _filteredSourceUserList = _sourceUserList.ToList();
+
+            _displayableUserList.Clear();
+            _filteredDisplayableUserList.Clear();
+
+            foreach (var follower in _sourceUserList)
+            {
+                var displayedUser = $"{GetFullHandle(follower)}     ({follower.Followings.Count})";
+                _displayableUserList.Add(displayedUser);
+                _filteredDisplayableUserList.Add(displayedUser);
+            }
+        }
+
+        public List<string> GetDisplayableList()
+        {
+            return _filteredDisplayableUserList;
+        }
+
+        public void FilterBy(string pattern)
+        {
+            ResetLists();
+
+            if (!string.IsNullOrWhiteSpace(pattern))
+            {
+                var elToRemove = _filteredSourceUserList
+                    .Where(x => !GetFullHandle(x).Contains(pattern))
+                    .Select(x => x)
+                    .ToList();
+
+                foreach (var el in elToRemove)
+                {
+                    _filteredSourceUserList.Remove(el);
+                    
+                    var dElToRemove = _filteredDisplayableUserList.First(x => x.Contains(GetFullHandle(el)));
+                    _filteredDisplayableUserList.Remove(dElToRemove);
+                }
+            }
+        }
+
+        private string GetFullHandle(Follower follower)
+        {
+            return $"@{follower.Acct}@{follower.Host}";
+        }
+
+        public void RemoveAt(int index)
+        {
+            var displayableUser = _filteredDisplayableUserList[index];
+            var sourceUser = _filteredSourceUserList[index];
+
+            _displayableUserList.Remove(displayableUser);
+            _sourceUserList.Remove(sourceUser);
+        }
+
+        public Follower GetElementAt(int index)
+        {
+            return _filteredSourceUserList[index];
+        }
+    }
+}

src/BSLManager/Tools/ConsoleGui.cs

@@ -0,0 +1,15 @@
+using System.Reflection;
+using Terminal.Gui;
+
+namespace BSLManager.Tools
+{
+    public static class ConsoleGui
+    {
+        public static void RefreshUI()
+        {
+            typeof(Application)
+                .GetMethod("TerminalResized", BindingFlags.Static | BindingFlags.NonPublic)
+                .Invoke(null, null);
+        }
+    }
+}