use https://github.com/nunocoracao/blowfish.git

themes/blowfish/genLang.js

@@ -0,0 +1,104 @@
+const fs = require('fs');
+const translate = require('@iamtraction/google-translate');
+
+const configDir = "./exampleSite/config/_default";
+const contentDir = "./exampleSite/content";
+const defaultLang = "en";
+const targetLang = process.argv[2] || "en";
+const targetLangIso = targetLang == "pt" ? "pt-pt" : targetLang;
+
+
+function createConfigs() {
+    const files = fs.readdirSync(configDir);
+    files.forEach(file => {
+        const filePath = `${configDir}/${file}`;
+        if (filePath.indexOf("languages.en.toml") > -1 ||
+            filePath.indexOf("menus.en.toml") > -1) {
+            var fileContent = fs.readFileSync(filePath, 'utf8');
+            fs.writeFileSync(filePath.replace(".en.toml", "." + targetLangIso + ".toml"), fileContent, 'utf8');
+        }
+    });
+}
+
+async function convert(text, from, to) {
+    var options = {
+        from: from,
+        to: to
+    };
+    var translated_text = await translate(text, options)
+        .catch(err => {
+            console.error(err);
+        });;
+    return translated_text && translated_text.text? translated_text.text : '';
+}
+
+async function processFrontMatter(block) {
+    var array = block.split("\n");
+    var translatedBlock = "";
+    for (var i = 0; i < array.length; i++) {
+        if (array[i].indexOf(":") > -1) {
+            var elements = array[i].split(":");
+            var newElement = "";
+            if (elements[0] == "title" ||
+                elements[0] == "description" ||
+                elements[0] == "summary" ||
+                elements[0] == "description" ||
+                elements[0] == "categories" ||
+                elements[0] == "tags") {
+                var translatedElement = elements[1] ? await convert(elements[1], defaultLang, targetLang) : elements[1];
+                newElement = elements[0] + ": " + translatedElement;
+            } else {
+                newElement = array[i];
+            }
+        } else {
+            newElement = array[i];
+        }
+        translatedBlock += newElement + "\n";
+    }
+    return translatedBlock;
+}
+
+async function processFile(filePath) {
+    console.log("translating", filePath)
+    if (filePath.indexOf("index.md") > -1) {
+
+        const targetFilePath = filePath.replace(".md", "." + targetLangIso + ".md");
+
+        const fileContent = fs.readFileSync(filePath, 'utf8');
+
+        var array = fileContent.split("---\n")
+        var frontMatter = array[1];
+        var content = array[2];
+
+        var translatedFrontMatter = await processFrontMatter(frontMatter);
+        var translatedContent = await convert(content, defaultLang, targetLang);
+
+        var newFileContent = "---\n" + translatedFrontMatter + "---\n" + translatedContent;
+        fs.writeFileSync(targetFilePath, newFileContent, 'utf8');
+
+    } else
+        return
+}
+
+async function processFolder(folderPath) {
+    const files = fs.readdirSync(folderPath);
+
+    for (var i in files) {
+        const file = files[i];
+        const filePath = `${folderPath}/${file}`;
+        const isDir = fs.lstatSync(filePath).isDirectory();
+        console.log(filePath, isDir);
+        if (isDir) {
+            await processFolder(filePath);
+        } else {
+            await processFile(filePath);
+        }
+    }
+}
+
+async function createContent() {
+    processFolder(contentDir);
+}
+
+createConfigs();
+createContent();