Import the current compendium elements into your Roll 20 campaign

R20ImportCompendium.js

/*
 * Paste into the chrome dev console of your Roll 20 campaign.
 * Select the compendium category to import (you can do a search or filter results)
 * Enter 'importCurrentCompendium()' in the dev console to start importing compendiums into your handouts
 * Don't touch the compendium tab until it finishes
 * If you want to import spells, reload the page to make sure there are no other hidden or closed character sheets
 * then open a single character sheet, the one where you want to import all your spells, then in the dev console
 * enter the command 'importCurrentcompendium(2, true)' and let it import all the spells into that character.
 */
async function importCurrentCompendium(timeout_per_item=10, spells=false) {
    var triggerDragAndDrop = function (elemDrag, elemDrop) {
      // function for triggering mouse events
      var fireMouseEvent = function (type, elem, centerX, centerY) {
        var evt = document.createEvent('MouseEvents');
        evt.initMouseEvent(type, true, true, window, 1, 1, 1, centerX, centerY, false, false, false, false, 0, elem);
        evt.dataTransfer = {files: [], types: ["text"]}
        elem.dispatchEvent(evt);
      };
    
      // calculate positions
      var pos = elemDrag.getBoundingClientRect();
      var center1X = Math.floor((pos.left + pos.right) / 2);
      var center1Y = Math.floor((pos.top + pos.bottom) / 2);
      pos = elemDrop.getBoundingClientRect();
      var center2X = Math.floor((pos.left + pos.right) / 2);
      var center2Y = Math.floor((pos.top + pos.bottom) / 2);
      
      // mouse over dragged element and mousedown
      fireMouseEvent('mousedown', elemDrag, center1X, center1Y);
      fireMouseEvent('mousemove', elemDrop, center2X, center2Y);
      fireMouseEvent('mouseup', elemDrag, center2X, center2Y);
    };
    var target = $("#finalcanvas")[0]
    if (spells)
        target = $(".sheet-compendium-drop-target")[0]
    
    compendium_items = $(".compendium-item")
    for (let i = 0; i < compendium_items.length; i++) {
        console.log("Importing Compendium item ", i, "/", compendium_items.length);
        triggerDragAndDrop(compendium_items[i], target)
        await new Promise(resolve => setTimeout(resolve, timeout_per_item * 1000));
        if (!spells) {
            $(".ui-dialog-titlebar-close").trigger("click")
            $(".ui-dialog").remove()
        }
    }
}