From d3a6ab658a8ffd960589a43d21962f4058c40d02 Mon Sep 17 00:00:00 2001
From: Alexander Nozik <altavir@gmail.com>
Date: Sun, 26 Jun 2022 12:32:22 +0300
Subject: [PATCH] Add ref resolution to basic page features

---
 data/home/content/consulting/index.md         | 10 ++++-----
 .../space/kscience/snark/SnarkPlugin.kt       |  2 +-
 .../kscience/snark/TextTransformation.kt      | 22 ++++++++++++++++---
 3 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/data/home/content/consulting/index.md b/data/home/content/consulting/index.md
index 3ffef2c..447c5f2 100644
--- a/data/home/content/consulting/index.md
+++ b/data/home/content/consulting/index.md
@@ -1,7 +1,7 @@
 ---
 type: page
 title: Consulting
-transformation: snark.replaceLinks
+transformation: snark.basic
 language: en
 ---
 
@@ -21,7 +21,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic03.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="${homeRef}/consulting/research"  class="link">Research</a></h3>
+            <h3><a href="${resolvePageRef("consulting.research")}"  class="link">Research</a></h3>
             <p>Analytics, prototyping and research for fundamental science and industry.</p>
         </header>
     </article>
@@ -30,7 +30,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic04.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="${homeRef}/consulting/expert"  class="link">Expert activity</a></h3>
+            <h3><a href="${resolvePageRef("consulting.expert")}"  class="link">Expert activity</a></h3>
             <p>Analysis and improvement of existing scientific software and projects.</p>
         </header>
     </article>
@@ -39,7 +39,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic05.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="${homeRef}/consulting/architecture"  class="link">Architecture</a></h3>
+            <h3><a href="${resolvePageRef("consulting.architecture")}"  class="link">Architecture</a></h3>
             <p>Design the architecture for scientific and technological applications.</p>
         </header>
     </article>
@@ -48,7 +48,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic06.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="${homeRef}/consulting/development"  class="link">Development</a></h3>
+            <h3><a href="${resolvePageRef("consulting.development")}"  class="link">Development</a></h3>
             <p>The development and support of open-source and in-house solutions( libraries, frameworks and end-user application).</p>
         </header>
     </article>
diff --git a/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt b/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt
index 42d8f57..547b2ad 100644
--- a/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt
+++ b/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt
@@ -126,7 +126,7 @@ class SnarkPlugin : AbstractPlugin() {
             "gif".asName() to SnarkParser(ImageIOReader, "gif"),
         )
         TextTransformation.TYPE -> mapOf(
-            "replaceLinks".asName() to TextTransformation.replaceLinks
+            "basic".asName() to BasicTextTransformation
         )
         else -> super.content(target)
     }
diff --git a/src/main/kotlin/space/kscience/snark/TextTransformation.kt b/src/main/kotlin/space/kscience/snark/TextTransformation.kt
index 2438d18..09f453c 100644
--- a/src/main/kotlin/space/kscience/snark/TextTransformation.kt
+++ b/src/main/kotlin/space/kscience/snark/TextTransformation.kt
@@ -10,10 +10,26 @@ fun interface TextTransformation {
     companion object {
         const val TYPE = "snark.textTransformation"
         val TEXT_TRANSFORMATION_KEY = NameToken("transformation")
+    }
+}
 
-        val replaceLinks: TextTransformation = object : TextTransformation {
-            context(PageBuilder) override fun transform(text: String): String {
-                return text.replace("\${homeRef}", homeRef)
+object BasicTextTransformation : TextTransformation {
+
+    private val regex = "\\\$\\{(\\w*)(?>\\(\"(.*)\"\\))?\\}".toRegex()
+
+    context(PageBuilder) override fun transform(text: String): String {
+        return text.replace(regex) { match ->
+            when (match.groups[1]!!.value) {
+                "homeRef" -> homeRef
+                "resolveRef" -> {
+                    val refString = match.groups[2]?.value ?: error("resolveRef requires a string (quoted) argument")
+                    resolveRef(refString)
+                }
+                "resolvePageRef" -> {
+                    val refString = match.groups[2]?.value ?: error("resolvePageRef requires a string (quoted) argument")
+                    resolvePageRef(refString)
+                }
+                else -> match.value
             }
         }
     }