const fs = require('fs')
const path = require('path')
const axios = require('axios')
const locales = ['zh', 'en', 'kr', 'fr', 'fr', 'ja']

const fetchLocale = async locale => {
    return axios.get(`https://4dkk.4dage.com/v4/www/locales/${locale}.json?${Date.now()}`)
}

const merge = (source, resource, target) => {
    for (let key in source) {
        if (typeof source[key] === 'string') {
            target[key] = resource[key] == void 0 ? source[key] : resource[key]
        } else {
            target[key] = {}
            resource[key] = resource[key] || {}
            merge(source[key], resource[key], target[key])
        }
    }
}

const combine = (source, resource, target) => {
    merge(source, resource, target)
}

function exec() {
    locales.forEach(locale => {
        fetchLocale(locale)
            .then(response => {
                try {
                    fs.readFile(path.join(__dirname, '..', 'src', 'locales', locale + '.json'), (err, data) => {
                        if (err) {
                            return
                        }

                        var target = {}
                        var source = JSON.parse(data.toString())
                        var resource = response.data

                        combine(source, resource, target)

                        fs.writeFile(path.join(__dirname, '..', 'src', 'locales', locale + '.json'), JSON.stringify(target, null, 4), () => {})
                        if (locale == 'zh') {
                            fs.writeFile(path.join(__dirname, '..', 'src', 'views', 'locales', locale + '.json'), JSON.stringify(target, null, 4), () => {})
                        }
                    })
                } catch (error) {
                    console.log(error)
                }
            })
            .catch(err => {
                if (locale == 'zh') {
                    fs.readFile(path.join(__dirname, '..', 'src', 'locales', locale + '.json'), (err, data) => {
                        if (err) {
                            return
                        }
                        fs.writeFile(path.join(__dirname, '..', 'src', 'views', 'locales', locale + '.json'), data.toString(), () => {})
                    })
                }
            })
    })
}
exec()