List installed mods, launch game, patching if needed

GCMM/GCMM.csproj

@@ -6,6 +6,14 @@
     <UseWindowsForms>true</UseWindowsForms>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Reference Include="System.Net.Http" />
+  </ItemGroup>
+
   <ItemGroup>
     <Compile Update="SettingsForm.cs">
       <SubType>Form</SubType>

GCMM/MainForm.Designer.cs

@@ -28,9 +28,9 @@
         /// </summary>
         private void InitializeComponent()
         {
-            System.Windows.Forms.ListViewGroup listViewGroup9 = new System.Windows.Forms.ListViewGroup("Installed", System.Windows.Forms.HorizontalAlignment.Center);
+            System.Windows.Forms.ListViewGroup listViewGroup13 = new System.Windows.Forms.ListViewGroup("Installed", System.Windows.Forms.HorizontalAlignment.Center);
-            System.Windows.Forms.ListViewGroup listViewGroup10 = new System.Windows.Forms.ListViewGroup("Available", System.Windows.Forms.HorizontalAlignment.Left);
+            System.Windows.Forms.ListViewGroup listViewGroup14 = new System.Windows.Forms.ListViewGroup("Available", System.Windows.Forms.HorizontalAlignment.Left);
-            System.Windows.Forms.ListViewItem listViewItem5 = new System.Windows.Forms.ListViewItem(new string[] {
+            System.Windows.Forms.ListViewItem listViewItem7 = new System.Windows.Forms.ListViewItem(new string[] {
             "Mod",
             "1.0",
             "2020.06.15. 2:01:43",
@@ -63,19 +63,19 @@
             this.latestVersion});
             this.modlist.ForeColor = System.Drawing.Color.Green;
             this.modlist.FullRowSelect = true;
-            listViewGroup9.Header = "Installed";
+            listViewGroup13.Header = "Installed";
-            listViewGroup9.HeaderAlignment = System.Windows.Forms.HorizontalAlignment.Center;
+            listViewGroup13.HeaderAlignment = System.Windows.Forms.HorizontalAlignment.Center;
-            listViewGroup9.Name = "installed";
+            listViewGroup13.Name = "installed";
-            listViewGroup10.Header = "Available";
+            listViewGroup14.Header = "Available";
-            listViewGroup10.Name = "available";
+            listViewGroup14.Name = "available";
             this.modlist.Groups.AddRange(new System.Windows.Forms.ListViewGroup[] {
-            listViewGroup9,
+            listViewGroup13,
-            listViewGroup10});
+            listViewGroup14});
             this.modlist.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
             this.modlist.HideSelection = false;
-            listViewItem5.Group = listViewGroup9;
+            listViewItem7.Group = listViewGroup13;
             this.modlist.Items.AddRange(new System.Windows.Forms.ListViewItem[] {
-            listViewItem5});
+            listViewItem7});
             this.modlist.Location = new System.Drawing.Point(12, 12);
             this.modlist.Name = "modlist";
             this.modlist.Size = new System.Drawing.Size(491, 468);

GCMM/MainForm.cs

@@ -1,12 +1,13 @@
 using GCMM.Properties;
+using Newtonsoft.Json.Linq;
 using System;
-using System.Collections.Generic;
+using System.Diagnostics;
-using System.ComponentModel;
-using System.Data;
 using System.Drawing;
 using System.IO;
+using System.IO.Compression;
 using System.Linq;
-using System.Text;
+using System.Net;
+using System.Reflection;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Windows.Forms;
@@ -34,6 +35,13 @@ namespace GCMM
                     MessageBox.Show("Found game at " + Settings.Default.GamePath);
                 Settings.Default.Save();
             }
+            if(string.IsNullOrWhiteSpace(Settings.Default.GamePath))
+            {
+                status.Text = "Status: Game not found";
+                return;
+            }
+            CheckIfPatched();
+            GetInstalledMods();
         }
 
         public void UpdateButton(Button button, bool enabled)
@@ -88,13 +96,129 @@ namespace GCMM
             return Directory.GetParent(ofd.FileName).FullName;
         }
 
+        public void GetInstalledMods()
+        {
+            foreach (var mod in Directory.GetFiles(Settings.Default.GamePath + @"\Plugins", "*.dll"))
+            {
+                try
+                {
+                    var an = AssemblyName.GetAssemblyName(mod);
+                    if (an.Name == "0Harmony") continue;
+                    modlist.Items.Add(new ListViewItem(new[] { an.Name, an.Version.ToString(), File.GetLastWriteTime(mod).ToString(), "" }, modlist.Groups["installed"]));
+                }
+                catch (BadImageFormatException)
+                { //Not a .NET assembly
+                }
+            }
+        }
+
+        public bool? CheckIfPatched()
+        {
+            if (!File.Exists(Settings.Default.GamePath + @"\IPA.exe"))
+            {
+                status.Text = "Status: Patcher missing\nInstalling a mod downloads it";
+                return null;
+            }
+            string nopatch = "Status: Unpatched\nClick play";
+            if (!Directory.Exists(Settings.Default.GamePath + @"\IPA\Backups\Gamecraft"))
+            {
+                status.Text = nopatch;
+                return false;
+            }
+            string backup = Directory.EnumerateDirectories(Settings.Default.GamePath + @"\IPA\Backups\Gamecraft").OrderByDescending(s => s).FirstOrDefault();
+            if (backup == null)
+            {
+                status.Text = nopatch;
+                return false;
+            }
+            if (File.GetLastWriteTime(Settings.Default.GamePath + @"\Gamecraft_Data\Managed\Assembly-CSharp.dll")
+                > //If the file was updated at least a minute after patching
+                Directory.GetLastWriteTime(backup).AddMinutes(1))
+            {
+                status.Text = nopatch;
+                return false;
+            }
+            status.Text = "Status: Patched";
+            return true;
+        }
+
+        public async void PatchGame()
+        {
+            UpdateButton(playbtn, false);
+            UpdateButton(installbtn, false);
+            UpdateButton(uninstallbtn, false);
+            UpdateButton(settingsbtn, false);
+            if (!CheckIfPatched().HasValue)
+            {
+                if (MessageBox.Show("The patcher (GCIPA) is not found. It will be downloaded from https://git.exmods.org/modtainers/GCIPA/releases and ran to patch the game.", "Patcher download needed", MessageBoxButtons.OKCancel)
+                    == DialogResult.Cancel)
+                    return;
+                string releases = "https://git.exmods.org/api/v1/repos/modtainers/GCIPA/releases";
+                string url;
+                this.status.Text = "Status: Patching...";
+                await Task.Run(() =>
+                {
+                    using (WebClient client = new WebClient())
+                    {
+                        url = JArray.Parse(client.DownloadString(releases)).First["assets"].First["browser_download_url"].ToString();
+                        client.DownloadFile(url, "IPA.zip");
+                        ZipFile.ExtractToDirectory("IPA.zip", Settings.Default.GamePath);
+                    }
+                });
+            }
+            bool? status = CheckIfPatched();
+            if (!status.HasValue) //Make sure it actually worked
+                return;
+            if (!status.Value)
+            {
+                var psi = new ProcessStartInfo(Settings.Default.GamePath + @"\IPA.exe", "Gamecraft.exe --nowait");
+                psi.UseShellExecute = false;
+                psi.RedirectStandardError = true;
+                psi.RedirectStandardOutput = true;
+                psi.WorkingDirectory = Settings.Default.GamePath;
+                psi.CreateNoWindow = true;
+                var process = Process.Start(psi);
+                process.BeginErrorReadLine();
+                process.BeginOutputReadLine();
+                process.EnableRaisingEvents = true;
+                modinfobox.Text = "";
+                DataReceivedEventHandler onoutput = (sender, e) =>
+                   {
+                       Invoke((Action)(() => modinfobox.Text += e.Data + Environment.NewLine));
+                   };
+                process.OutputDataReceived += onoutput;
+                process.ErrorDataReceived += onoutput;
+                process.Exited += CheckStartGame;
+            }
+            else
+                CheckStartGame(null, null);
+        }
+
+        private void CheckStartGame(object sender, EventArgs e)
+        {
+            Action act = () =>
+            {
+                if ((sender as Process).ExitCode != 0)
+                {
+                    status.Text = "Status: Patching failed";
+                    return;
+                }
+                if (CheckIfPatched() ?? false)
+                    Process.Start("steam://run/1078000/");
+            };
+            if (InvokeRequired)
+                Invoke(act);
+        }
+
         private void playbtn_Click(object sender, EventArgs e)
         {
-
+            if (playbtn.ForeColor == Color.Green) return; //Disabled
+            PatchGame();
         }
 
         private void settingsbtn_Click(object sender, EventArgs e)
         {
+            if (settingsbtn.ForeColor == Color.Green) return; //Disabled
             var sf = new SettingsForm();
             sf.ShowDialog(this);
         }