feat(mod): add MuMod install/delete endpoints

Author: clansty

MaiChartManager/Controllers/Mod/InstallationController.cs

@@ -290,6 +290,49 @@ public async Task InstallAquaMaiOnline(InstallAquaMaiOnlineDto req)
         throw new InvalidOperationException("Failed to download AquaMai from all urls", lastException);
     }
 
+    [HttpPost]
+    public async Task InstallMuMod()
+    {
+        CopyFile(ModPaths.MuModDllBuiltinPath, ModPaths.MuModDllInstalledPath);
+
+        if (System.IO.File.Exists(ModPaths.AquaMaiDllInstalledPath))
+        {
+            System.IO.File.Delete(ModPaths.AquaMaiDllInstalledPath);
+        }
+
+        if (!System.IO.File.Exists(ModPaths.MuModConfigPath))
+        {
+            System.IO.File.WriteAllText(ModPaths.MuModConfigPath, "Channel = \"slow\"\nCachePath = \"LocalAssets\\\\MuMod.cache\"\n");
+        }
+
+        try
+        {
+            await muModService.EnsureCache(CancellationToken.None);
+        }
+        catch (Exception e)
+        {
+            logger.LogError(e, "Failed to download MuMod cache during install, but DLL was installed successfully");
+        }
+    }
+
+    [HttpPost]
+    public void DeleteAquaMai()
+    {
+        if (System.IO.File.Exists(ModPaths.AquaMaiDllInstalledPath))
+        {
+            FileSystem.DeleteFile(ModPaths.AquaMaiDllInstalledPath, UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin);
+        }
+    }
+
+    [HttpPost]
+    public void DeleteMuMod()
+    {
+        if (System.IO.File.Exists(ModPaths.MuModDllInstalledPath))
+        {
+            FileSystem.DeleteFile(ModPaths.MuModDllInstalledPath, UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin);
+        }
+    }
+
     [HttpPost]
     public void KillGameProcess()
     {