path: root/development/verify-locale-strings.js

// //////////////////////////////////////////////////////////////////////////////
//
// Locale verification script
//
// usage:
//
//     node app/scripts/verify-locale-strings.js <locale>
//
// will check the given locale against the strings in english
//
// //////////////////////////////////////////////////////////////////////////////

const fs = require('fs')
const path = require('path')
const localeIndex = require('../app/_locales/index.json')

console.log('Locale Verification')

const specifiedLocale = process.argv[2]
if (specifiedLocale) {
    console.log(`Verifying selected locale "${specifiedLocale}":\n\n`)
    const locale = localeIndex.find(localeMeta => localeMeta.code === specifiedLocale)
    verifyLocale(locale)
} else {
    console.log('Verifying all locales:\n\n')
    localeIndex.forEach(localeMeta => {
        verifyLocale({ localeMeta })
        console.log('\n')
    })
}


function verifyLocale ({ localeMeta }) {
    const localeCode = localeMeta.code
    const localeName = localeMeta.name
    let targetLocale, englishLocale
    try {
        const localeFilePath = path.join(process.cwd(), 'app', '_locales', localeCode, 'messages.json')
        targetLocale = JSON.parse(fs.readFileSync(localeFilePath, 'utf8'))
    } catch (e) {
        if (e.code === 'ENOENT') {
            console.log('Locale file not found')
        } else {
            console.log(`Error opening your locale ("${localeCode}") file: `, e)
        }
        process.exit(1)
    }

    try {
        const englishFilePath = path.join(process.cwd(), 'app', '_locales', 'en', 'messages.json')
        englishLocale = JSON.parse(fs.readFileSync(englishFilePath, 'utf8'))
    } catch (e) {
        if (e.code === 'ENOENT') {
            console.log('English File not found')
        } else {
            console.log('Error opening english locale file: ', e)
        }
        process.exit(1)
    }

    // console.log('  verifying whether all your locale ("${localeCode}") strings are contained in the english one')
    const extraItems = compareLocalesForMissingItems({ base: targetLocale, subject: englishLocale })
    // console.log('\n  verifying whether your locale ("${localeCode}") contains all english strings')
    const missingItems = compareLocalesForMissingItems({ base: englishLocale, subject: targetLocale })

    const englishEntryCount = Object.keys(englishLocale).length
    const coveragePercent = 100 * (englishEntryCount - missingItems.length) / englishEntryCount

    console.log(`Status of **${localeName} (${localeCode})** ${coveragePercent.toFixed(2)}% coverage:`)

    if (extraItems.length) {
        console.log('\nMissing from english locale:')
        extraItems.forEach(function (key) {
            console.log(`  - [ ] ${key}`)
        })
    } else {
        // console.log(`  all ${counter} strings declared in your locale ("${localeCode}") were found in the english one`)
    }

    if (missingItems.length) {
        console.log(`\nMissing:`)
        missingItems.forEach(function (key) {
            console.log(`  - [ ] ${key}`)
        })
    } else {
        // console.log(`  all ${counter} english strings were found in your locale ("${localeCode}")!`)
    }

    if (!extraItems.length && !missingItems.length) {
        console.log('Full coverage  : )')
    }
}

function compareLocalesForMissingItems ({ base, subject }) {
    return Object.keys(base).filter((key) => !subject[key])
}