// ==UserScript==
// @name        JavDB - Copy all magnets
// @namespace   Violentmonkey Scripts
// @match       https://javdb.com/v/*
// @grant       none
// @version     1.0
// @author      Lukáš Kucharczyk
// @description Adds a button to copy all magnet links at once.
// @downloadURL https://git.kucharczyk.xyz/lukas/userscripts/raw/branch/main/javdb_copy_all_magnets.user.js
// @supportURL  https://git.kucharczyk.xyz/lukas/userscripts
// ==/UserScript==

/**
 * @param {string} type
 * @param {object} props
 * @param {...(string|HTMLElement)} children
 * @return {HTMLElement}
 */
function elt(type, props, ...children) {
  let dom = document.createElement(type);
  if (props) {
    Object.keys(props).forEach((key) => {
      if (key === "style") {
        Object.assign(dom.style, props[key]);
      } else if (key === "dataset") {
        Object.keys(props[key]).forEach((dataKey) => {
          dom.dataset[dataKey] = props[key][dataKey];
        });
      } else {
        dom[key] = props[key];
      }
    });
  }
  for (let child of children) {
    if (typeof child !== "string") dom.appendChild(child);
    else dom.appendChild(document.createTextNode(child));
  }
  return dom;
}

function findElementsWithText(text, tagName = "*") {
  const elements = document.querySelectorAll(tagName);
  return Array.from(elements).filter((element) =>
    element.textContent.includes(text)
  );
}

const allMagnetButtons = findElementsWithText("Copy", "button");
let allMagnetLinks = allMagnetButtons.reduce((prevValue, currentButton) => {
  return prevValue + "\n" + currentButton.dataset.clipboardText;
}, "");

let copyAllButton = elt(
  "div",
  {
    className: "item columns is-desktop",
  },
  elt("div", {
    className: "magnet-name column is-four-fifths",
  }),
  elt(
    "div",
    {
      className: "buttons column",
    },
    elt(
      "button",
      {
        type: "button",
        className: "button is-info copy-to-clipboard",
        dataset: {
          clipboardText: allMagnetLinks,
        },
      },
      "Copy all magnets"
    )
  )
);

const magnetContainer = document.getElementById("magnets-content");
magnetContainer.prepend(copyAllButton);