feat: add DumpOfferings

src/dumper/dumper.cs

@@ -1,6 +1,7 @@
 using CUE4Parse.Compression;
 using CUE4Parse.Encryption.Aes;
 using CUE4Parse.FileProvider;
+using CUE4Parse.FileProvider.Objects;
 using CUE4Parse.MappingsProvider.Usmap;
 using CUE4Parse.UE4.Assets;
 using CUE4Parse.UE4.Assets.Exports.Engine;
@@ -28,6 +29,14 @@ struct ItemInfo
     public string iconFilePath;
 }
 
+struct OfferingInfo
+{
+    public string id;
+    public string name;
+    public string iconFilePath;
+    public EPlayerRole role;
+}
+
 class Dumper
 {
     private DefaultFileProvider? _provider;
@@ -38,6 +47,7 @@ class Dumper
 
     private readonly Dictionary<int, CharacterInfo> _characterMap = new();
     private readonly Dictionary<string, ItemInfo> _itemMap = new();
+    private readonly Dictionary<string, OfferingInfo> _offeringMap = new();
 
     public Dumper(string outDir)
     {
@@ -238,6 +248,59 @@ class Dumper
         return;
     }
 
+    public void DumpOfferings()
+    {
+        if (_dataPak == null || _provider == null)
+            throw new InvalidOperationException("Attempted to call dump function without dumper initialization/state");
+
+        _log.Info("Dumping offerings");
+
+        List<string> offeringDBPaths = _dataPak.Files.Keys.Where(x => x.Contains("/OfferingDB.uasset", StringComparison.OrdinalIgnoreCase)).ToList();
+
+        foreach (string path in offeringDBPaths)
+        {
+            string cleanPath = path.Contains('.') ? path[..path.LastIndexOf('.')] : path;
+
+            if (_provider.TryLoadPackageObject<UDataTable>(cleanPath, out UDataTable? dataTable))
+            {
+                foreach (KeyValuePair<FName, FStructFallback> row in dataTable.RowMap)
+                {
+                    List<FPropertyTag> props = row.Value.Properties;
+
+                    string offeringId = row.Key.Text;
+
+                    if (!TryGetProp(props, "Role", out EPlayerRole role)
+                        || !TryGetProp(props, "UIData", out FStructFallback uiDataFb)
+                        || !TryGetProp(props, "Inventory", out bool isInventory)
+                        || !TryGetProp(props, "IsFakeItem", out bool isFakeItem)
+                        )
+                        throw new KeyNotFoundException("Role, UIData, Inventory or IsFakeItem was not found");
+
+                    UIDataStruct uiData = uiDataFb.MapToStruct<UIDataStruct>();
+
+                    if (!isInventory || isFakeItem)
+                    {
+                        _log.Verbose("Ignoring invalid offering ({0})", offeringDBPaths);
+                        continue;
+                    }
+
+                    if (uiData.IconAssetList.Length == 0)
+                        throw new InvalidDataException("Offerings's UIData had no icons");
+
+                    _offeringMap[offeringId] = new OfferingInfo
+                    {
+                        id = offeringId,
+                        name = uiData.DisplayName.ToString(),
+                        iconFilePath = uiData.IconAssetList[0].ToString(),
+                        role = role
+                    };
+                }
+            }
+        }
+
+        WriteJson("offerings", _offeringMap.Values);
+        _log.Info("Dumped {0} offerings", _offeringMap.Count);
+    }
     /*
      * internal helper functions
      */