class Real {

    constructor() {
        this.selectors = {
            title: '.rd-title',
            price: '.rd-buybox__price',
            main_image: '.rd-gallery__container--thumbnails .swiper-slide',
            // info_box: '.rd-product-description__top-accordion-content-attributes .rd-attribute-table > div',
            info_box: 'div.rd-product-description__top-accordion-content > div.rd-product-description__top-accordion-content-attributes .rd-attribute-table > div',
            // info_title: 'span.rd-product-description__attribute-title',
            info_title: '> span',
            // info_data: 'div.rd-product-description__attribute-values',
            info_data: 'div > div',
            description: '#rd-product-description',
            waitElements: []
        }
        this.selectors.waitElements.push(this.selectors.main_image)
        this.selectors.waitElements.push(this.selectors.info_box)
    }

    extract($, cb) {
        let cleanup = (txt) => {
            return typeof txt == 'string' ? txt.replace(/[\-\t\n\r]+/g, '').replace(/[\s]{2}/g, '').trim() : txt
        }
        let info = {}
        $(this.selectors.info_box).map((k, el) => {
            let infoData = $(el).find(this.selectors.info_data).map((k, v) => {
                return cleanup($(v).text())
            }).get()            
            info[$(el).find(this.selectors.info_title).text()] = cleanup(infoData.filter((item, index) => infoData.indexOf(item) === index).join(' | '))
        })

        info = Object.assign({
            title: cleanup($(this.selectors.title).text()),
            price: cleanup($(this.selectors.price).text()).replace(',', '.') + ($(this.selectors.price).data('cents') ? cleanup($(this.selectors.price).data('cents')) : ''),
            main_img: (() => {
                let images = $(this.selectors.main_image)
                if (images.length) {
                    images = images.map((k, v) => {
                        // return $(v).css('background-image').slice(4, -1).replace(/"/g, "")
                        return $(v).find('img').attr('src')
                    }).get()
                } else {
                    images = []
                    let img = $('.rd-product-image-gallery__slide-large-image')
                    if (img.length) images = [img.attr('src')]
                }
                return images.length ? images : null
            })()
        }, info)

        $(this.selectors.description).find('*').each((k, elem) => this.removeAllAttributes($, elem))        
        info.description = '<div>' + $(this.selectors.description).html() + '</div>'
        cb(info)        
    }

    removeAllAttributes = function ($, node) {
        node.attributes || Object.keys(node.attribs).map(
            name => $(node).removeAttr(name)
        );
        return node
    }
}

module.exports = new Real