rate-it/scripts/translate.js

const path = require('path');
const fs = require('fs');
const argv = require('minimist')(process.argv.slice(2));
var readlineSync = require('readline-sync');
const root = path.resolve(__dirname+"/../config/locales");
const generated = require(root+"/generated/en.json")['en'];

const ALLOWED_LANG = ['fr'];

let langs = argv.lang.split(',');

langs.forEach(function(lang) {
    if (ALLOWED_LANG.indexOf(lang) === -1) {
        return;
    }

    let localePath = root+"/"+lang+".json";
    let locale = {};
    locale[lang] = {};
    try {
        locale = require(localePath);
    } catch(exception ) {
        console.log("New translation into : "+lang);
    }

    Object.keys(generated).forEach(function(word) {

        //If word hasn't already been translated
        if (!(word in locale[lang])) {
            console.log("New word to translate into "+lang);
            let translation = readlineSync.question('+ '+generated[word]+" : ", {
                encoding : 'utf-8'
            });
            locale[lang][word] = translation;
        }
    });

    let localeWords = Object.keys(locale[lang]);
    let generatedWords = Object.keys(generated);

    //Tidy locale file to remove useless translated words
    let data = {}
    localeWords.forEach(function(word) {
        if (generatedWords.indexOf(word) !== -1) {
            data[word] = locale[lang][word]
        }
    });
    locale[lang] = data;

    fs.writeFile(localePath, JSON.stringify(locale), function(err) {
        console.log("en -> "+lang);
    });

})


// dir.readFiles(root, {
//   exclude : ['generated']
// }, function(err, content, next) {
//
//     let locale = JSON.parse(content);
//     let lang =  Object.keys(locale)[0];
//
//     if (lang === "fr") {
//
//       let newLocale = Object.assign({}, generated, locale[lang]);
//       let data = {};
//       data[lang] = newLocale;
//
//       fs.writeFile(root+"/"+lang+".json", JSON.stringify(data), function(err) {
//         console.log("en -> "+lang);
//       });
//
//     } else {
//
//     }
//
//     next();
//
// }, function(err, files) {
//   //console.log(files);
// });