import { launch } from "puppeteer";

export const login = async function(host: string, username: string, password: string) {
  const browser = await launch();

  try {
    const page = await browser.newPage();

    var puppeteerTransferedStorage = {};

    //setup console logging
    page.on("console", consoleObj => {
      const transferPrefix = "TRANSFER:";
      if (consoleObj.text().startsWith(transferPrefix)) {
        puppeteerTransferedStorage = JSON.parse(
          consoleObj.text().substring(transferPrefix.length)
        );
      } else {
        console.log(`BROWSER: ${consoleObj.text()}`);
      }
    });

    console.log("navigating to page");
    await page.goto(host);

    console.log("waiting for 1 second");
    //todo: find a hook that works instead of waiting
    await page.waitFor(2000);

    console.log("typing in username");
    await page.type("#i0116", username, { delay: 20 });

    console.log("clicking 'next' button");
    await page.click("#idSIButton9");

    console.log("waiting 5 seconds");
    //todo: find a hook that works instead of waiting
    await page.waitFor(5000);

    console.log("typing in email");
    await page.type("#user_email", username, { delay: 20 });

    console.log("typing in password");
    await page.type("#user_password", password, { delay: 20 });

    console.log("clicking submit");
    await page.click("#user_submit");

    console.log("waiting 1 second");
    //todo: find a hook that works instead of waiting
    await page.waitFor(1000);

    console.log("taking screenshot of page");
    await page.screenshot({ path: "example.png" });

    console.log("getting session storage");
    await page.evaluate(() => {
      let puppeteerSessionStorage = {};
      for (let i = 0; i < sessionStorage.length; i++) {
        puppeteerSessionStorage[sessionStorage.key(i)] = sessionStorage.getItem(
          sessionStorage.key(i)
        );
      }

      console.log("TRANSFER:" + JSON.stringify(puppeteerSessionStorage));
    });

    return puppeteerTransferedStorage;
  } finally {
    console.log("closing browser");
    await browser.close();
  }
};