Simplify HTMX config serialization

src/Ramstack.HtmxToolkit/HtmxConfig.cs

@@ -19,4 +19,12 @@ public abstract class HtmxConfig
     /// <param name="version">The target major version of HTMX that this configuration applies to.</param>
     internal HtmxConfig(HtmxTargetVersion version) =>
         TargetVersion = version;
+
+    /// <summary>
+    /// Serializes this configuration to JSON.
+    /// </summary>
+    /// <returns>
+    /// A string containing this configuration serialized as JSON.
+    /// </returns>
+    internal abstract string ToJson();
 }

src/Ramstack.HtmxToolkit/HtmxV1Config.cs

@@ -1,3 +1,4 @@
+using System.Text.Json;
 using System.Text.Json.Serialization;
 
 namespace Ramstack.HtmxToolkit;
@@ -197,4 +198,8 @@ public sealed class HtmxV1Config() : HtmxConfig(HtmxTargetVersion.V1)
     [JsonPropertyName("triggerSpecsCache")]
     [JsonConverter(typeof(HtmxTriggerSpecsCacheJsonConverter))]
     public bool? TriggerSpecsCacheEnabled { get; set; }
+
+    /// <inheritdoc />
+    internal override string ToJson() =>
+        JsonSerializer.Serialize(this, HtmxConfigJsonSerializerContext.Default.HtmxV1Config);
 }

src/Ramstack.HtmxToolkit/HtmxV2Config.cs

@@ -1,3 +1,4 @@
+using System.Text.Json;
 using System.Text.Json.Serialization;
 
 using Ramstack.HtmxToolkit.TagHelpers;
@@ -229,4 +230,8 @@ public sealed class HtmxV2Config() : HtmxConfig(HtmxTargetVersion.V2)
     /// Defaults to <see langword="false"/>.
     /// </summary>
     public bool? ReportValidityOfForms { get; set; }
+
+    /// <inheritdoc />
+    internal override string ToJson() =>
+        JsonSerializer.Serialize(this, HtmxConfigJsonSerializerContext.Default.HtmxV2Config);
 }

src/Ramstack.HtmxToolkit/HtmxV4Config.cs

@@ -1,3 +1,4 @@
+using System.Text.Json;
 using System.Text.Json.Serialization;
 
 namespace Ramstack.HtmxToolkit;
@@ -145,4 +146,8 @@ public sealed class HtmxV4Config() : HtmxConfig(HtmxTargetVersion.V4)
     /// at runtime and supports wildcard patterns such as <c>"4xx"</c> and <c>"44x"</c>.
     /// </remarks>
     public string[]? NoSwap { get; set; }
+
+    /// <inheritdoc />
+    internal override string ToJson() =>
+        JsonSerializer.Serialize(this, HtmxConfigJsonSerializerContext.Default.HtmxV4Config);
 }

src/Ramstack.HtmxToolkit/TagHelpers/HtmxConfigTagHelper.cs

@@ -1,5 +1,3 @@
-using System.Text.Json;
-
 using Microsoft.AspNetCore.Antiforgery;
 using Microsoft.AspNetCore.Html;
 using Microsoft.AspNetCore.Mvc.Rendering;
@@ -40,12 +38,7 @@ public override Task ProcessAsync(TagHelperContext context, TagHelperOutput outp
         output.TagMode = TagMode.SelfClosing;
         output.Attributes.SetAttribute("name", "htmx-config");
 
-        var json = options.Value.HtmxConfig switch
-        {
-            HtmxV1Config value => JsonSerializer.Serialize(value, HtmxConfigJsonSerializerContext.Default.HtmxV1Config),
-            HtmxV2Config value => JsonSerializer.Serialize(value, HtmxConfigJsonSerializerContext.Default.HtmxV2Config),
-            var value => JsonSerializer.Serialize((HtmxV4Config)value, HtmxConfigJsonSerializerContext.Default.HtmxV4Config)
-        };
+        var json = options.Value.HtmxConfig.ToJson();
 
         output.Attributes.SetAttribute(
             new TagHelperAttribute("content", new HtmlString(json), HtmlAttributeValueStyle.SingleQuotes));