Add support for utilizing the steamcmd.net web API instead of the cumbersome app, leaving current functionality as backup in cases of failure

CreamInstaller/Platforms/Steam/SteamCMD.WebAPI.cs

@@ -0,0 +1,123 @@
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using CreamInstaller.Forms;
+using CreamInstaller.Utility;
+using Newtonsoft.Json;
+
+namespace CreamInstaller.Platforms.Steam;
+
+internal static partial class SteamCMD
+{
+    private const int CooldownGame = 600;
+    private const int CooldownDlc = 1200;
+
+    internal static async Task<CmdAppData> QueryWebAPI(string appId, bool isDlc = false, int attempts = 0)
+    {
+        while (!Program.Canceled)
+        {
+            attempts++;
+            string cacheFile = ProgramData.AppInfoPath + @$"\{appId}.cmd.json";
+            bool cachedExists = cacheFile.FileExists();
+            if (!cachedExists || ProgramData.CheckCooldown(appId + ".cmd", isDlc ? CooldownDlc : CooldownGame))
+            {
+                string response =
+                    await HttpClientManager.EnsureGet($"https://api.steamcmd.net/v1/info/{appId}");
+                if (response is not null)
+                {
+                    try
+                    {
+                        CmdAppDetails appDetails = JsonConvert.DeserializeObject<CmdAppDetails>(response);
+                        if (appDetails is not null && appDetails.Status == "success")
+                        {
+                            if (appDetails.Data.Values.Count != 0)
+                            {
+                                CmdAppData data = appDetails.Data.Values.First();
+                                try
+                                {
+                                    cacheFile.WriteFile(JsonConvert.SerializeObject(data, Formatting.Indented));
+                                }
+                                catch
+#if DEBUG
+                                    (Exception e)
+                                {
+                                    DebugForm.Current.Log("SteamCMD web API query failed on attempt #" + attempts +
+                                                          " for " + appId + (isDlc ? " (DLC)" : "")
+                                                          + ": Unsuccessful serialization (" + e.Message + ")");
+                                }
+#else
+                                {
+                                    // ignored
+                                }
+#endif
+                                return data;
+                            }
+#if DEBUG
+                            else
+                                DebugForm.Current.Log(
+                                    "SteamCMD web API query failed on attempt #" + attempts + " for " + appId +
+                                    (isDlc ? " (DLC)" : "")
+                                    + ": No data",
+                                    LogTextBox.Warning);
+#endif
+                        }
+#if DEBUG
+                        else
+                            DebugForm.Current.Log(
+                                "SteamCMD web API query failed on attempt #" + attempts + " for " + appId +
+                                (isDlc ? " (DLC)" : "")
+                                + ": Status not success (" + appDetails?.Status + ")",
+                                LogTextBox.Warning);
+#endif
+                    }
+                    catch
+#if DEBUG
+                        (Exception e)
+                    {
+                        DebugForm.Current.Log("SteamCMD web API query failed on attempt #" + attempts + " for " +
+                                              appId + (isDlc ? " (DLC)" : "")
+                                              + ": Unsuccessful deserialization (" + e.Message + ")");
+                    }
+#else
+                    {
+                        // ignored
+                    }
+#endif
+                }
+#if DEBUG
+                else
+                    DebugForm.Current.Log(
+                        "SteamCMD web API query failed on attempt #" + attempts + " for " + appId +
+                        (isDlc ? " (DLC)" : "") +
+                        ": Response null",
+                        LogTextBox.Warning);
+#endif
+            }
+
+            if (cachedExists)
+                try
+                {
+                    return JsonConvert.DeserializeObject<CmdAppData>(cacheFile.ReadFile());
+                }
+                catch
+                {
+                    cacheFile.DeleteFile();
+                }
+
+            if (isDlc)
+                break;
+            if (attempts > 10)
+            {
+#if DEBUG
+                DebugForm.Current.Log("Failed to query SteamCMD web API after 10 tries: " + appId);
+#endif
+                break;
+            }
+
+            Thread.Sleep(1000);
+        }
+
+        return null;
+    }
+}

CreamInstaller/Platforms/Steam/SteamCMD.cs

@@ -186,6 +186,10 @@ internal static partial class SteamCMD
 
     internal static async Task<CmdAppData> GetAppInfo(string appId, string branch = "public", int buildId = 0)
     {
+        CmdAppData data = await QueryWebAPI(appId);
+        if (data is not null)
+            return data;
+
         int attempts = 0;
         while (!Program.Canceled)
         {