Make reading helpers even more helpful

SabreTools.Models/Internal/DictionaryBase.cs

@@ -22,26 +22,85 @@ namespace SabreTools.Models.Internal
         /// <summary>
         /// Read a key as a bool, returning null on error
         /// </summary>
-        public bool? ReadBool(string key) => Read<bool>(key);
+        public bool? ReadBool(string key)
+        {
+            bool? asBool = Read<bool>(key);
+            if (asBool != null)
+                return asBool;
+
+            string? asString = Read<string>(key);
+            return asString?.ToLowerInvariant() switch
+            {
+                "true" => true,
+                "yes" => true,
+                "false" => false,
+                "no" => false,
+                _ => null,
+            };
+        }
 
         /// <summary>
         /// Read a key as a double, returning null on error
         /// </summary>
-        public double? ReadDouble(string key) => Read<double>(key);
+        public double? ReadDouble(string key)
+        {
+            double? asDouble = Read<double>(key);
+            if (asDouble != null)
+                return asDouble;
+
+            string? asString = Read<string>(key);
+            if (asString != null && double.TryParse(asString, out double asStringDouble))
+                return asStringDouble;
+
+            return null;
+        }
 
         /// <summary>
         /// Read a key as a long, returning null on error
         /// </summary>
-        public long? ReadLong(string key) => Read<long>(key);
+        public long? ReadLong(string key)
+        {
+            long? asLong = Read<long>(key);
+            if (asLong != null)
+                return asLong;
+
+            string? asString = Read<string>(key);
+            if (asString != null && long.TryParse(asString, out long asStringLong))
+                return asStringLong;
+
+            return null;
+        }
 
         /// <summary>
         /// Read a key as a string, returning null on error
         /// </summary>
-        public string? ReadString(string key) => Read<string>(key);
+        public string? ReadString(string key)
+        {
+            string? asString = Read<string>(key);
+            if (asString != null)
+                return asString;
+
+            string[]? asArray = Read<string[]>(key);
+            if (asArray != null)
+                return string.Join(',', asArray);
+
+            return null;
+        }
 
         /// <summary>
         /// Read a key as a string[], returning null on error
         /// </summary>
-        public string[]? ReadStringArray(string key) => Read<string[]>(key);
+        public string[]? ReadStringArray(string key)
+        {
+            string[]? asArray = Read<string[]>(key);
+            if (asArray != null)
+                return asArray;
+
+            string? asString = Read<string>(key);
+            if (asString != null)
+                return new string[] { asString };
+
+            return null;
+        }
     }
 }