Add version data extraction (#6235)

Will allow me to dynamically fetch the version for the site making it so
we don't have to update it every mc release

Author: JRoy

.github/workflows/upload-plugin-data.yml

@@ -28,6 +28,7 @@ jobs:
         run: |
           chmod +x gradlew
           ./gradlew commandData
+          ./gradlew versionData
 
       - name: Upload Data
         uses: ryand56/r2-upload-action@v1

Essentials/build.gradle

@@ -40,6 +40,10 @@ test {
     testLogging.showStandardStreams = true
 }
 
+tasks.register('versionData', VersionDataTask) {
+    destination.set(rootProject.layout.projectDirectory.dir("generated").file("version-data.json"))
+}
+
 shadowJar {
     dependencies {
         include (dependency('io.papermc:paperlib'))

build-logic/src/main/kotlin/VersionDataTask.kt

@@ -0,0 +1,76 @@
+import com.google.gson.GsonBuilder
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.OutputFile
+import org.gradle.api.tasks.TaskAction
+import java.util.regex.Pattern
+
+abstract class VersionDataTask : DefaultTask() {
+    @OutputFile
+    val destination = project.objects.fileProperty()
+
+    @TaskAction
+    fun generateVersionData() {
+        val versionUtilFile =
+            project.rootProject.file("Essentials/src/main/java/com/earth2me/essentials/utils/VersionUtil.java")
+        if (!versionUtilFile.exists()) {
+            logger.warn("VersionUtil not found")
+            return
+        }
+
+        val content = versionUtilFile.readText()
+        val supportedVersions = extractSupportedVersions(content)
+
+        if (supportedVersions.isEmpty()) {
+            logger.warn("No supported versions found in VersionUtil")
+            return
+        }
+
+        val versionData = mapOf("supportedVersions" to supportedVersions)
+        val json = GsonBuilder().create().toJson(versionData)
+
+        val output = project.file("build/generated/version-data.json")
+        output.parentFile.mkdirs()
+        output.writeText(json)
+        destination.get().asFile.parentFile.mkdirs()
+        output.copyTo(destination.get().asFile, overwrite = true)
+    }
+
+    private fun extractSupportedVersions(content: String): List<String> {
+        val supportedVersions = mutableListOf<String>()
+
+        val supportedVersionsPattern = Pattern.compile(
+            "supportedVersions\\s*=\\s*ImmutableSet\\.of\\(([^)]+)\\)",
+            Pattern.DOTALL
+        )
+        val matcher = supportedVersionsPattern.matcher(content)
+
+        if (matcher.find()) {
+            val versionsString = matcher.group(1)
+            val versionNames = versionsString.split(",")
+                .map { it.trim() }
+                .filter { it.isNotEmpty() }
+
+            for (versionName in versionNames) {
+                val versionString = extractVersionString(content, versionName)
+                if (versionString != null) {
+                    supportedVersions.add(versionString)
+                }
+            }
+        }
+
+        return supportedVersions
+    }
+
+    private fun extractVersionString(content: String, versionName: String): String? {
+        val versionPattern = Pattern.compile(
+            "BukkitVersion\\s+$versionName\\s*=\\s*BukkitVersion\\.fromString\\(\"([^\"]+)\"\\)"
+        )
+        val matcher = versionPattern.matcher(content)
+
+        return if (matcher.find()) {
+            matcher.group(1)
+        } else {
+            null
+        }
+    }
+}