Implement different languages in website

ergo-wallet/src/main/scala/org/ergoplatform/wallet/mnemonic/WordList.scala

@@ -28,5 +28,13 @@ object WordList {
     Try(loadFile()).map(r => try r.getLines().toList finally r.close())
 
   private def resourceLoader(fileName: String): () => BufferedSource =
-    () => Source.fromInputStream(getClass.getResourceAsStream(s"/wordlist/$fileName"))(Codec.UTF8)
+    () => {
+      val path = s"/wordlist/$fileName"
+      val stream =
+        Option(getClass.getResourceAsStream(path))
+          .orElse(Option(Thread.currentThread().getContextClassLoader.getResourceAsStream(path)))
+          .orElse(Option(ClassLoader.getSystemResourceAsStream(path)))
+          .getOrElse(throw new IllegalArgumentException(s"Wordlist resource not found: $path"))
+      Source.fromInputStream(stream)(Codec.UTF8)
+    }
 }

ergo-wallet/src/test/scala/org/ergoplatform/wallet/mnemonic/WordListSpec.scala

@@ -0,0 +1,36 @@
+package org.ergoplatform.wallet.mnemonic
+
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
+
+class WordListSpec extends AnyFlatSpec with Matchers {
+
+  behavior of "WordList and Mnemonic"
+
+  it should "load all available wordlists and have 2048 words each" in {
+    WordList.AvailableLanguages.foreach { lang =>
+      val wl = WordList.load(lang).get
+      wl.words.length shouldBe 2048
+      wl.words.forall(_.nonEmpty) shouldBe true
+    }
+  }
+
+  it should "use ideographic space for Japanese and space for others" in {
+    val ja = WordList.load("japanese").get
+    ja.delimiter shouldBe "\u3000"
+
+    WordList.AvailableLanguages.filterNot(_ == "japanese").foreach { lang =>
+      val wl = WordList.load(lang).get
+      wl.delimiter shouldBe " "
+    }
+  }
+
+  it should "generate mnemonic for each language with fixed entropy" in {
+    val entropy = Array.fill[Byte](20)(1) // 160 bits entropy
+    WordList.AvailableLanguages.foreach { lang =>
+      val m = new Mnemonic(lang, 160)
+      val phrase = m.toMnemonic(entropy).get
+      phrase.getData().nonEmpty shouldBe true
+    }
+  }
+}