import Promise from "bluebird";
import Selenium from "./Selenium";
import Database from "./Database";

export default class ReviewScrape {

    constructor(config = {
        database: {
            host:     "localhost",
            user:     "root",
            password: "root",
            database: "centraleyes_portal_bw"
        }
    }) {
        this._config = config;
        this._selenium = new Selenium();
    }

    start() {
        return this._selenium.start()
            .then(() => Database.connect(this._config.database));
    }

    execute(scrapers) {
        let count = 0;
        return Promise.map(scrapers, scraper => this._execute(scraper).then(() => count += scraper.getScrapedCount()), {concurrency: 1})
          .then(() => count);
    }

    stop() {
        return this._selenium.stop()
            .then(() => Database.close());
    }

    _execute(scraper) {
				console.log("--- " + scraper.getUri());
        const browser = this._selenium.getInstance();
        return browser.setViewportSize({ width: 1920, height: 1080 }, false)
            .then(() => browser.url(scraper.getUri()))
            .then(() => scraper.scrape(browser))
            .end();
    }

}