Adding per object validation

SessionZero.SzfCli/Program.cs

@@ -1,6 +1,7 @@
 using Spectre.Console;
 using SessionZero.SzfLib.Parser;
 using System.IO;
+using SessionZero.SzfLib.Helpers;
 
 void PrintSection(dynamic section, int indent = 0)
 {
@@ -55,6 +56,8 @@ if (!File.Exists(filePath))
 
 string szfContent = File.ReadAllText(filePath);
 var parser = new SzfParser();
+try
+{
     var szfObject = parser.Parse(szfContent);
     
     if (szfObject == null)
@@ -71,3 +74,9 @@ foreach (var section in szfObject.Sections)
     {
         PrintSection(section);
     }
+}
+catch (SzfError ex)
+{
+    Console.WriteLine($"Szf Validation Error: {ex.Message}");
+}
+

SessionZero.SzfLib/Helpers/SzfError.cs

@@ -0,0 +1,18 @@
+namespace SessionZero.SzfLib.Helpers;
+
+public class SzfError : Exception
+{
+    public bool IsValid { get; set; } = true;
+    public string Message { get; set; } = string.Empty;
+
+    public void AddError(string message)
+    {
+        Message += message + "\r\n";
+        IsValid = false;
+    }
+
+    public override string ToString()
+    {
+        return $"Valid: {IsValid}, Message: {Message}";
+    }
+}

SessionZero.SzfLib/Helpers/SzfHelper.cs

@@ -16,4 +16,16 @@ public static class SzfHelper
         
         return obj.IsAbstract || obj.IsInterface ? null : obj;
     }
+
+    public static SzfError BasicSzfValidation(ISzfObject obj)
+    {
+        SzfError result = new SzfError();
+        
+        var metadataSection = obj.Sections.FirstOrDefault(s => s.Name == "Metadata");
+        if (metadataSection is null) result.AddError("No metadata section found");
+        
+        if (obj.GetMetadataField("Name") == string.Empty) result.AddError("No metadata field name found");
+        
+        return result;
+    }
 }

SessionZero.SzfLib/Objects/ISzfObject.cs

@@ -1,3 +1,4 @@
+using SessionZero.SzfLib.Helpers;
 using SessionZero.SzfLib.Parser;
 
 namespace SessionZero.SzfLib.Objects;
@@ -12,5 +13,9 @@ public interface ISzfObject
     public string GetFieldValue(string sectionName, string fieldName);
     public string FindFieldValueInSection(SzfSection section, string[] path, int depth, string fieldName);
     
-    public ISzfObject? Parse();
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <returns></returns>
+    public SzfError Validate();
 }

SessionZero.SzfLib/Objects/SzfCharacter.cs

@@ -1,7 +1,13 @@
+using SessionZero.SzfLib.Helpers;
+
 namespace SessionZero.SzfLib.Objects;
 
 [SzfObject("character")]
 public class SzfCharacter : SzfObject, ISzfCharacter
 {
     public override string SzfType { get; set; } = "character";
+    public override SzfError Validate()
+    {
+        throw new NotImplementedException();
+    }
 }

SessionZero.SzfLib/Objects/SzfCharacterTemplate.cs

@@ -1,7 +1,13 @@
+using SessionZero.SzfLib.Helpers;
+
 namespace SessionZero.SzfLib.Objects;
 
 [SzfObject("character_template")]
 public class SzfCharacterTemplate : SzfObject, ISzfCharacterTemplate
 {
     public override string SzfType { get; set; } = "character_template";
+    public override SzfError Validate()
+    {
+        throw new NotImplementedException();
+    }
 }

SessionZero.SzfLib/Objects/SzfDataset.cs

@@ -1,7 +1,25 @@
+using SessionZero.SzfLib.Helpers;
+using SessionZero.SzfLib.Parser;
+
 namespace SessionZero.SzfLib.Objects;
 
 [SzfObject("dataset")]
 public class SzfDataset : SzfObject, ISzfDataset
 {
     public override string SzfType { get; set; } = "dataset";
+
+
+    public override SzfError Validate()
+    {
+        var result = SzfHelper.BasicSzfValidation(this);
+        
+        if (GetMetadataField("Type") == string.Empty) result.AddError("Metadata field `Type` is missing or empty");
+
+        foreach (var entry in Sections.Where(entry => GetFieldValue(entry.Name, "Name") == string.Empty))
+        {
+            result.AddError($"Entry {entry.Name}'s `Name` field is missing or empty");
+        }
+        
+        return result;
+    }
 }

SessionZero.SzfLib/Objects/SzfObject.cs

@@ -1,3 +1,4 @@
+using SessionZero.SzfLib.Helpers;
 using SessionZero.SzfLib.Parser;
 
 namespace SessionZero.SzfLib.Objects;
@@ -13,9 +14,10 @@ public abstract class SzfObject : ISzfObject
     /// Handles specific parsing logic for the SzfObject that overrides this method.
     /// </summary>
     /// <returns></returns>
-    public virtual ISzfObject? Parse()
+    public virtual SzfError Validate()
     {
-        return this;
+        var result = SzfHelper.BasicSzfValidation(this);
+        return result;
     }
     
     /// <summary>

SessionZero.SzfLib/Parser/SzfField.cs

@@ -0,0 +1,13 @@
+namespace SessionZero.SzfLib.Parser;
+
+public class SzfField(string name, SzfFieldType type)
+{
+    public string Name { get; set; } = name;
+    public SzfFieldType SzfType { get; set; } = type;
+    public string? Value { get; set; }
+
+    public bool Validate()
+    {
+        throw new NotImplementedException();
+    }
+}

SessionZero.SzfLib/Parser/SzfFieldType.cs

@@ -0,0 +1,13 @@
+namespace SessionZero.SzfLib.Parser;
+
+public enum SzfFieldType
+{
+    Text,
+    TextField,
+    Number,
+    Bool,
+    Calculated,
+    System,
+    EntryReference,
+    EntryReferenceList,
+}

SessionZero.SzfLib/Parser/SzfParser.cs

@@ -7,12 +7,15 @@ namespace SessionZero.SzfLib.Parser;
 public class SzfParser : ISzfParser
 {
     /// <summary>
-    /// Parses the given SZF content and returns the corresponding ISzfObject.
+    /// Tries to parse an ISzfObject
     /// </summary>
     /// <param name="szfContent"></param>
     /// <returns></returns>
+    /// <exception cref="SzfError"></exception>
     public ISzfObject? Parse(string szfContent)
     {
+        SzfError result = new();
+        
         var lines = szfContent.Split(new[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
     
         string szfObjectTypeName = string.Empty;
@@ -73,10 +76,14 @@ public class SzfParser : ISzfParser
                 szfObject.Sections.Add(section);
             }
             
-            return szfObject.Parse() ?? szfObject;
+            result = szfObject.Validate();
+
+            if (result.IsValid) return szfObject;
+            
+            Console.WriteLine(result.Message);
         }
     
-        return null;
+        throw result;
     }
 
     public ISzfObject? Parse(ISzfFile file)
@@ -144,30 +151,3 @@ public class SzfParser : ISzfParser
     
     
 }
-
-public class SzfSection(string name)
-{
-    public string Name { get; set; } = name;
-    public Dictionary<string, SzfField> Fields { get; set; } = new();
-    public Dictionary<string, SzfSection> Subsections { get; set; } = new();
-}
-
-
-public class SzfField(string name, SzfFieldType type)
-{
-    public string Name { get; set; } = name;
-    public SzfFieldType SzfType { get; set; } = type;
-    public string? Value { get; set; }
-}
-
-public enum SzfFieldType
-{
-    Text,
-    TextField,
-    Number,
-    Bool,
-    Calculated,
-    System,
-    EntryReference,
-    EntryReferenceList,
-}

SessionZero.SzfLib/Parser/SzfSection.cs

@@ -0,0 +1,8 @@
+namespace SessionZero.SzfLib.Parser;
+
+public class SzfSection(string name)
+{
+    public string Name { get; set; } = name;
+    public Dictionary<string, SzfField> Fields { get; set; } = new();
+    public Dictionary<string, SzfSection> Subsections { get; set; } = new();
+}