Add warning on close, display whether online mode can be used

TBMM/MainForm.Designer.cs

@@ -228,6 +228,8 @@
             this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
             this.Name = "MainForm";
             this.Text = "Techblox Mod Manager";
+            this.Activated += new System.EventHandler(this.MainForm_Activated);
+            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.MainForm_FormClosing);
             this.Load += new System.EventHandler(this.Form1_Load);
             this.Shown += new System.EventHandler(this.MainForm_Shown);
             this.ResumeLayout(false);

TBMM/MainForm.cs

@@ -215,7 +215,7 @@ You may also want to verify the game's files in the launcher.
 
         private async Task RefreshEverything(bool evenMods)
         {
-            if (CheckIfPatched() == GameState.Patched) //Set from placeholder
+            if (CheckIfPatched() == GameState.Patched) //Set from placeholder & unpatch if game was patched
                 HandleGameExit(null, EventArgs.Empty);
             lastGameUpdateTime = GetGameVersionAsDate();
             var mods = GetInstalledMods();
@@ -229,5 +229,21 @@ You may also want to verify the game's files in the launcher.
         {
             Focus();
         }
+
+        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            if (e.Cancel) return;
+            if (CheckIfPatched() != GameState.InGame) return;
+            if (MessageBox.Show("The game is still running. The mod manager needs to be running until the game closes to restore the game files." +
+                                " If you proceed you won't be able to play online until you start the mod manager again.\n\n" +
+                                "Are you sure you want TBMM to exit before the game does?", "Game still running",
+                    MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2) == DialogResult.No)
+                e.Cancel = true;
+        }
+
+        private void MainForm_Activated(object sender, EventArgs e)
+        {
+            CheckIfPatched();
+        }
     }
 }

TBMM/MainPatcher.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO.Compression;
 using System.IO;
@@ -13,67 +14,72 @@ namespace TBMM
     {
         public GameState CheckIfPatched()
         {
+            Dictionary<GameState, (string Status, string Extra, string Play)> statusTexts = new()
+            {
+                { GameState.NotFound, ("Game not found", "Specify the game's location in settings", "") },
+                { GameState.InGame, ("Game is running", "", "In-game") },
+                { GameState.NoPatcher, ("Patcher missing", "Clicking Play will install it", "") },
+                { GameState.OldPatcher, ("Patcher outdated", "nClicking play will update it", "") },
+                { GameState.Unpatched, ("Unpatched", "", "") },
+                { GameState.Patched, ("Patched", "", "")}
+            };
+            void SetStatusText(GameState state, bool patched)
+            {
+                var (statusText, extra, play) = statusTexts[state];
+                if (extra.Length == 0) extra = patched ? "Cannot join online mode" : "Online mode available";
+                if (play.Length == 0) play = "Play modded";
+                status.Text = $"Status: {statusText}\n{extra}";
+                playbtn.Text = play;
+            }
             if (GetExe() == null)
             {
-                status.Text = "Status: Game not found";
+                SetStatusText(GameState.NotFound, false);
                 return GameState.NotFound;
             }
-            string pnp = "Play modded";
-            if (!File.Exists(GamePath(@"\IPA.exe")))
-            {
-                status.Text = "Status: Patcher missing\nClicking Play will install it";
-                playbtn.Text = pnp;
-                return GameState.NoPatcher;
-            }
 
-            if (CheckIfGameIsRunning())
+            bool gameIsRunning = CheckIfGameIsRunning();
+            if (gameIsRunning)
             {
-                status.Text = "Status: Game is running";
-                playbtn.Text = "In-game";
                 UpdateButton(playbtn, false); //Don't allow (un)installing mods if game is running
                 UpdateButton(installbtn, false);
                 UpdateButton(uninstallbtn, false);
                 modlist.Enabled = false;
-                return GameState.InGame;
+            }
+            else
+            {
+                if (!working) UpdateButton(playbtn, true);
+                modlist.Enabled = true;
             }
 
-            if (!working) UpdateButton(playbtn, true);
-            modlist.Enabled = true;
-            if (gcipa.Updatable && !(gcipa.Version == new Version(1, 0, 0, 0) && gcipa.LatestVersion == new Version(4, 0, 0, 0)))
+            GameState GetPatchedState()
             {
-                status.Text = "Status: Patcher outdated\nClicking play will update it";
-                playbtn.Text = pnp;
-                return GameState.OldPatcher;
-            }
-            string nopatch = "Status: Unpatched";
-            string gc = GetExe(withExtension: false);
-            string backups = GamePath(@"\IPA\Backups\" + gc);
-            if (!Directory.Exists(backups))
-            {
-                status.Text = nopatch;
-                playbtn.Text = pnp;
-                return GameState.Unpatched;
-            }
-            string backup = Directory.EnumerateDirectories(backups).OrderByDescending(Directory.GetLastWriteTimeUtc).FirstOrDefault();
-            if (backup == null)
-            {
-                status.Text = nopatch;
-                playbtn.Text = pnp;
-                return GameState.Unpatched;
-            }
-            if (File.GetLastWriteTime(GamePath($@"\{gc}_Data\Managed\Assembly-CSharp.dll"))
-                > //If the file was updated at least 2 minutes after patching
-                Directory.GetLastWriteTime(backup).AddMinutes(2)
-                || !File.Exists(GamePath($@"\{gc}_Data\Managed\IllusionInjector.dll")))
-            {
-                status.Text = nopatch;
-                playbtn.Text = pnp;
-                return GameState.Unpatched;
+                if (!File.Exists(GamePath(@"\IPA.exe")))
+                    return GameState.NoPatcher;
+
+                if (gcipa.Updatable && !(gcipa.Version == new Version(1, 0, 0, 0) &&
+                                         gcipa.LatestVersion == new Version(4, 0, 0, 0))
+                                    && !gameIsRunning)
+                    return GameState.OldPatcher;
+                string gc = GetExe(withExtension: false);
+                string backups = GamePath(@"\IPA\Backups\" + gc);
+                if (!Directory.Exists(backups))
+                    return GameState.Unpatched;
+                string backup = Directory.EnumerateDirectories(backups)
+                    .OrderByDescending(Directory.GetLastWriteTimeUtc).FirstOrDefault();
+                if (backup == null)
+                    return GameState.Unpatched;
+                if (File.GetLastWriteTime(GamePath($@"\{gc}_Data\Managed\Assembly-CSharp.dll"))
+                    > //If the file was updated at least 2 minutes after patching
+                    Directory.GetLastWriteTime(backup).AddMinutes(2)
+                    || !File.Exists(GamePath($@"\{gc}_Data\Managed\IllusionInjector.dll")))
+                    return GameState.Unpatched;
+                return GameState.Patched;
             }
 
-            status.Text = "Status: Patched";
-            playbtn.Text = "Play";
-            return GameState.Patched;
+            var patchedState = GetPatchedState();
+            var finalState = gameIsRunning ? GameState.InGame : patchedState;
+            SetStatusText(finalState, patchedState == GameState.Patched);
+            return finalState;
         }
 
         public async Task<bool?> PatchStartGame(string command = null)

TBMM/MainUtils.cs

@@ -112,7 +112,7 @@ namespace TBMM
             _gameProcess = null;
             if (InvokeMethod(CheckIfPatched) != GameState.Patched)
                 return;
-            InvokeMethod(() => ExecutePatcher(false)).Exited += (o, args) =>
+            InvokeMethod(() => ExecutePatcher(false)).Exited += (_, _) =>
             {
                 if (InvokeMethod(CheckIfPatched) == GameState.Patched)
                 {

TBMM/TBMM.csproj

@@ -11,7 +11,7 @@
     <Company>ExMods</Company>
     <Description>A mod manager for Techblox. It automatically downloads and runs GCIPA and allows the user to install mods.</Description>
     <GenerateResourceUsePreserializedResources>true</GenerateResourceUsePreserializedResources>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">