class translation {
    #content;
    translated;

    /**
     * This create new translation. Translation store content of the 
     * translation, make avairable to format translated phrase and also
     * store that translation was found in the phrasebook.
     * 
     * @param {string} content - Content of the translation.
     * @param {bool} translated - True when translation could be found.
     */
    constructor(content, translated = true) {
        if (typeof(content) !== "string") {
            throw new TypeError("Translated content must be string.");
        }

        if (typeof(translated) !== "boolean") {
            throw new TypeError("Result of translation must be boolean.");
        }

        this.#content = content;
        this.translated = translated;
    }

    /**
     * This convert transiation to string.
     * 
     * @returns {string} - Content of the translation.
     */
    toString() {
        return this.#content;
    }

    /**
     * @returns {string} - Content of the translation.
     */
    get text() {
        return this.#content;
    }

    /**
     * @returns {bool} - True when translation was found, false when not.
     */
    get valid() {
        return this.translated;
    }
}

exports.translation = translation;