/**
 * Bundle.js
 *
 * @author realor
 */

import { ModuleLoader } from '../utils/ModuleLoader.js'

class Bundle {
    name = null
    translations = new Map()

    constructor(name, path) {
        this.name = name
        this.path = path
    }

    load(languages) {
        let promises = []
        for (let language of languages) {
            let translations = this.translations.get(language)
            if (translations === undefined) {
                let path = this.path
                if (language.length > 0) path += '_' + language
                path += '.js'

                let promise = ModuleLoader.load(path)
                promise.then(
                    module => {
                        console.info('bundle ' + path + ' loaded.')
                        this.translations.set(language, module.translations)
                    },
                    () => {
                        console.info('bundle ' + path + ' not found.')
                        this.translations.set(language, {})
                    }
                )
                promises.push(promise)
                this.translations.set(language, promise)
            } else if (translations instanceof Promise) {
                promises.push(translations)
            }
        }
        return Promise.allSettled(promises)
    }

    get(languages, key, ...args) {
        let text = undefined
        for (let language of languages) {
            let langTranslations = this.translations.get(language)
            if (langTranslations) {
                text = langTranslations[key]
                if (text) {
                    if (typeof text === 'function') {
                        text = text(...args)
                    }
                    break
                }
            }
        }
        return text || key
    }
}

export { Bundle }