backend migrated to Java 17

jpacrepo-frontend/build.gradle

@@ -0,0 +1,11 @@
+plugins {
+    alias(catalog.plugins.kotlin.multiplatform)
+}
+
+kotlin {
+    js(IR) {
+        browser {
+        }
+        binaries.executable()
+    }
+}

jpacrepo-frontend/src/main/kotlin/net/woggioni/jpacrepo/DocumentWalk.kt

@@ -0,0 +1,70 @@
+package net.woggioni.jpacrepo
+
+import org.w3c.dom.Document
+import org.w3c.dom.Element
+
+
+class HtmlBuilder private constructor(private val doc : Document, val el: Element) {
+
+    companion object {
+        fun <T> of(doc : Document, el: Element, cb : HtmlBuilder.(el : Element) -> T) : T {
+            return HtmlBuilder(doc, el).cb(el)
+        }
+    }
+
+    private inline fun <T> dfd(
+            name : String,
+            attrs : Map<String, String>,
+            cb : HtmlBuilder.(el : Element) -> T) : T {
+        val child = doc.createElement(name)
+        for((key, value) in attrs) {
+            child.setAttribute(key, value)
+        }
+        el.appendChild(child)
+        return HtmlBuilder(doc, child).cb(child)
+    }
+
+    fun <T> html(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("html", attrs, cb)
+    fun <T> head(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("head", attrs, cb)
+    fun <T> body(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("body", attrs, cb)
+
+    fun <T> div(attrs : Map<String, String> = emptyMap(),
+            cb : HtmlBuilder.(el : Element) -> T) : T = dfd("div", attrs, cb)
+    fun <T> header(attrs : Map<String, String> = emptyMap(),
+                cb : HtmlBuilder.(el : Element) -> T) : T = dfd("header", attrs, cb)
+    fun <T> main(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("main", attrs, cb)
+    fun <T> footer(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("footer", attrs, cb)
+    fun <T> a(attrs : Map<String, String> = emptyMap(),
+                cb : HtmlBuilder.(el : Element) -> T) : T = dfd("a", attrs, cb)
+    fun <T> meta(attrs : Map<String, String> = emptyMap(),
+              cb : HtmlBuilder.(el : Element) -> T) : T = dfd("meta", attrs, cb)
+    fun <T> script(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("script", attrs, cb)
+    fun <T> link(attrs : Map<String, String> = emptyMap(),
+                   cb : HtmlBuilder.(el : Element) -> T) : T = dfd("link", attrs, cb)
+    fun <T> title(attrs : Map<String, String> = emptyMap(),
+                 cb : HtmlBuilder.(el : Element) -> T) : T = dfd("title", attrs, cb)
+    fun <T> p(attrs : Map<String, String> = emptyMap(),
+               cb : HtmlBuilder.(el : Element) -> T) : T = dfd("p", attrs, cb)
+
+    fun <T> h1(attrs : Map<String, String> = emptyMap(),
+                  cb : HtmlBuilder.(el : Element) -> T) : T = dfd("h1", attrs, cb)
+
+
+    fun classes(vararg classes : String) {
+        for(cls in classes) el.classList.add(cls)
+    }
+
+    fun attr(key: String, value : String) {
+        el.setAttribute(key, value)
+    }
+
+    fun text(txt : String) {
+        el.textContent = txt
+    }
+}

jpacrepo-frontend/src/main/kotlin/net/woggioni/jpacrepo/Main.kt

@@ -0,0 +1,61 @@
+package net.woggioni.jpacrepo
+
+import kotlinx.browser.document
+import net.woggioni.jpacrepo.Component.container
+import org.w3c.dom.HTMLElement
+
+
+object Component {
+    val container = document.getElementById("container") as HTMLElement
+
+    fun sayHelloViaDom() {
+        container.textContent = "Hello, DOM! Kotlin is writing…"
+    }
+}
+
+fun main(vararg args: String) {
+//    println("JavaScript generated through Kotlin")
+//
+//    Component.sayHelloViaDom()
+//    sayHelloViaJsConsole()
+//    sayHelloViaInlinedJavaScript()
+
+    HtmlBuilder.of(document, document.body as HTMLElement) {
+        classes("d-flex", "h-100", "text-center", "text-white", "bg-dark")
+        div {
+            classes("cover-container", "d-flex", "w-100", "h-100", "p-3", "mx-auto", "flex-column")
+
+        }
+        header {
+           classes("mb-auto")
+        }
+        main {
+            classes("px-3")
+            h1 {
+                text("Cover your page.")
+            }
+            p {
+                classes("lead")
+                text("Cover is a one-page template for building simple and beautiful home pages. Download, edit the text, and add your own fullscreen background photo to make it your own.")
+            }
+            p {
+                classes("lead")
+                a {
+                    classes("btn", "btn-lg", "btn-secondary", "fw-bold", "border-white", "bg-white")
+                    text("Learn more")
+                }
+            }
+        }
+        footer {
+            classes("mt-auto", "text-white-50")
+        }
+    }
+}
+
+private fun sayHelloViaJsConsole() {
+    console.log("Hello from `console.log()`!")
+}
+
+private fun sayHelloViaInlinedJavaScript() {
+    js("document.writeln('Hello, from inlined JavaScript in Kotlin!')")
+}

jpacrepo-frontend/src/main/resources/index.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+        <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+        <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
+        <script src="jpacrepo-frontend.js" defer="true"></script>
+        <title>Hello World!</title>
+</html>