accounts-frontend/scripts/i18n-collect.js

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import fs from 'fs';
import {sync as globSync} from 'glob';
import {sync as mkdirpSync} from 'mkdirp';
import chalk from 'chalk';
import prompt from 'prompt';
const MESSAGES_PATTERN = `../dist/messages/**/*.json`;
const LANG_DIR = `../src/i18n`;
const DEFAULT_LOCALE = 'en';
const SUPPORTED_LANGS = [DEFAULT_LOCALE].concat('ru', 'be');
/**
* Aggregates the default messages that were extracted from the app's
* React components via the React Intl Babel plugin. An error will be thrown if
* there are messages in different components that use the same `id`. The result
* is a flat collection of `id: message` pairs for the app's default locale.
*/
let idToFileMap = {};
let duplicateIds = [];
let defaultMessages = globSync(MESSAGES_PATTERN)
.map((filename) => [filename, JSON.parse(fs.readFileSync(filename, 'utf8'))])
.reduce((collection, [file, descriptors]) => {
descriptors.forEach(({id, defaultMessage}) => {
if (collection.hasOwnProperty(id)) {
duplicateIds.push(id);
}
collection[id] = defaultMessage;
idToFileMap[id] = (idToFileMap[id] || []).concat(file);
});
return collection;
}, {});
if (duplicateIds.length) {
console.log('\nFound duplicated ids:');
duplicateIds.forEach((id) => console.log(`${chalk.yellow(id)}:\n - ${idToFileMap[id].join('\n - ')}\n`));
console.log(chalk.red('Please correct the errors above to proceed further!'));
return;
}
duplicateIds = null;
idToFileMap = null;
/**
* Making a diff with the previous DEFAULT_LOCALE version
*/
const defaultMessagesPath = `${LANG_DIR}/${DEFAULT_LOCALE}.json`;
let keysToUpdate = [];
let keysToAdd = [];
let keysToRemove = [];
const isNotMarked = (value) => value.slice(0, 2) !== '--';
try {
const prevMessages = JSON.parse(fs.readFileSync(defaultMessagesPath, 'utf8'));
keysToAdd = Object.keys(defaultMessages).filter((key) => !prevMessages[key]);
keysToRemove = Object.keys(prevMessages).filter((key) => !defaultMessages[key]).filter(isNotMarked);
keysToUpdate = Object.entries(prevMessages).reduce((acc, [key, message]) =>
acc.concat(defaultMessages[key] && defaultMessages[key] !== message ? key : [])
, []);
} catch(err) {
console.log(chalk.yellow(`Can not read ${defaultMessagesPath}. The new file will be created.`), err);
}
if (!keysToAdd.length && !keysToRemove.length && !keysToUpdate.length) {
return console.log(chalk.green('Everything is up to date!'));
}
console.log(chalk.magenta(`The diff relative to default locale (${DEFAULT_LOCALE}) is:`));
if (keysToRemove.length) {
console.log('The following keys will be removed:');
console.log(chalk.red('\n - ') + keysToRemove.join(chalk.red('\n - ')) + '\n');
}
if (keysToAdd.length) {
console.log('The following keys will be added:');
console.log(chalk.green('\n + ') + keysToAdd.join(chalk.green('\n + ')) + '\n');
}
if (keysToUpdate.length) {
console.log('The following keys will be updated:');
console.log(chalk.yellow('\n @ ') + keysToUpdate.join(chalk.yellow('\n @ ')) + '\n');
}
prompt.start();
prompt.get({
properties: {
apply: {
description: 'Apply changes? [Y/n]',
pattern: /^y|n$/i,
message: 'Please enter "y" or "n"',
default: 'y',
before: (value) => value.toLowerCase() === 'y'
}
}
}, (err, resp) => {
console.log('\n');
if (err || !resp.apply) {
return console.log(chalk.red('Aborted'));
}
buildLocales();
console.log(chalk.green('All locales was successfuly built'));
});
function buildLocales() {
mkdirpSync(LANG_DIR);
SUPPORTED_LANGS.map((lang) => {
const destPath = `${LANG_DIR}/${lang}.json`;
let newMessages = {};
try {
newMessages = JSON.parse(fs.readFileSync(destPath, 'utf8'));
} catch (err) {
console.log(chalk.yellow(`Can not read ${destPath}. The new file will be created.`), err);
}
keysToRemove.forEach((key) => {
delete newMessages[key];
});
keysToUpdate.forEach((key) => {
newMessages[`--${key}`] = newMessages[key];
});
keysToAdd.concat(keysToUpdate).forEach((key) => {
newMessages[key] = defaultMessages[key];
});
const sortedKeys = Object.keys(newMessages).sort((a, b) => {
a = a.replace(/^\-+/, '');
b = b.replace(/^\-+/, '');
return a < b || !isNotMarked(a) ? -1 : 1;
});
const sortedNewMessages = sortedKeys.reduce((acc, key) => {
acc[key] = newMessages[key];
return acc;
}, {});
fs.writeFileSync(destPath, JSON.stringify(sortedNewMessages, null, 4) + '\n');
});
}