From 4be9831eddba9bcdbaa2e21a90955a8384352d14 Mon Sep 17 00:00:00 2001
From: Paul-Henri Froidmont <git.contact-57n2p@froidmont.org>
Date: Wed, 13 Aug 2025 20:55:46 +0200
Subject: [PATCH] Add HtmlBuilder

---
 core/src/scalive/HtmlBuilder.scala | 30 ++++++++++++++++++++++++++++++
 core/src/scalive/main.scala        |  2 ++
 2 files changed, 32 insertions(+)
 create mode 100644 core/src/scalive/HtmlBuilder.scala

diff --git a/core/src/scalive/HtmlBuilder.scala b/core/src/scalive/HtmlBuilder.scala
new file mode 100644
index 0000000..5d08d61
--- /dev/null
+++ b/core/src/scalive/HtmlBuilder.scala
@@ -0,0 +1,30 @@
+package scalive
+
+import java.io.StringWriter
+
+object HtmlBuilder:
+
+  def build(lv: LiveView[?]): String =
+    val strw = new StringWriter()
+    build(lv.static, lv.dynamic, strw)
+    strw.toString()
+
+  private def build(
+      static: Seq[String],
+      dynamic: Seq[LiveMod[?]],
+      strw: StringWriter
+  ): Unit =
+    for i <- dynamic.indices do
+      strw.append(static(i))
+      dynamic(i) match
+        case mod: LiveMod.Dynamic[?, ?] =>
+          strw.append(mod.currentValue.toString)
+        case mod: LiveMod.When[?]     => build(mod, strw)
+        case mod: LiveMod.Split[?, ?] => build(mod, strw)
+    strw.append(static.last)
+
+  private def build(mod: LiveMod.When[?], strw: StringWriter): Unit =
+    if mod.displayed then build(mod.nested.static, mod.nested.dynamic, strw)
+
+  private def build(mod: LiveMod.Split[?, ?], strw: StringWriter): Unit =
+    mod.dynamic.foreach(entry => build(mod.static, entry, strw))
diff --git a/core/src/scalive/main.scala b/core/src/scalive/main.scala
index d6486b9..36c8ca7 100644
--- a/core/src/scalive/main.scala
+++ b/core/src/scalive/main.scala
@@ -17,6 +17,8 @@ def main =
     )
   println(lv.fullDiff.toJsonPretty)
 
+  println(HtmlBuilder.build(lv))
+
   println("Edit first and last")
   lv.update(
     MyModel(