Edit all listed items in your discogs collection

discogs.bulk.edit.js

const g =  window || global;
const find = (selector, base = document) => Array.from(base.querySelectorAll(selector));
const timer = (ms) => new Promise((res) => setTimeout(res, ms));
const hideHeaderAndPrice = () =>
  ['thead', '.rating', '.collection-date-added-column', '.pricing', '.hide_mobile']
    .flatMap((cn) => find(cn))
    .forEach((e) => e.setAttribute('style', 'display: none'));


const GRADES = {
'M': 'Mint (M)',
'NM': 'Near Mint (NM or M-)',
'VG_P': 'Very Good Plus (VG+)',
'VG': 'Very Good (VG)',
'G_P': 'Good Plus (G+)',
'G': 'Good (G)',
'F': 'Fair (F)',
'P': 'Poor (P)'
};

const PLACEMENT = {
  O: "Oppe",
  N: "Nede",
  B: "Boden"
}

const SUBFOLDERS = {
  HoG: "HoG",
  IGM: "IGM",
  OG: "OG",
  Gj: "Gjerdrum",
  Maus: "Maus",
  Skiaker: "Skiaker"
}

const force  = (elem) => true;


const ifEmpty = (elem) => Boolean(
      find('.notes_text', elem)
        .map((elem) => elem.textContent)
        .filter((text) => text === '').length);


const equals = (comparator)=>  (elem) => Boolean(
      find('.notes_text', elem)
        .map((elem) => elem.textContent)
        .filter((text) => text === comparator).length);


const editField = async (field, val, strategy = ifEmpty) => {
    

  return (
    find(field)
      //.filter((_, i) => i < 2)
      .filter(strategy)
      .map(async (e, i) => {
        await timer(i * 700);
        find('button', e)[0].click();
        setTimeout(() => {
          const s = find('select', e)[0];          
          find(`option[value]`, e)
            .filter((option) => option.value.replace("\n","") === val)
            .map((option) => {
              s.value = option.value;
              option.selected = true;
              return [s, option].map((e) => e.click());
            });
        }, 200);
      })
  );
};

const dataHeader = (val) => `[data-header*="${val}"]`;
const dataField = (val) => `[data-field-name="${val}"]`;

g.discogs = g.discogs || {};
g.discogs.setOrigin = (val, force) => editField(dataHeader('Origin'), val, force);
g.discogs.setPlacement = (val, force) => editField(dataHeader('Placement'), val, force);
g.discogs.setMediaCondition = (val, force) => editField(dataField('Media Condition'), val, force);
g.discogs.setSleeveCondition = (val, force) => editField(dataField('Sleeve Condition'), val, force);
g.discogs.setMediaAndSleeveCondition = (val, force) =>
  ['Media Condition', 'Sleeve Condition'].map((selector) => editField(dataField(selector), val, force));

hideHeaderAndPrice();
/*
USAGE

* discogs.setPlacement(PLACEMENT.N, equals(PLACEMENT.B)) / set placement NEDE if items current placement is Boden
* discogs.setPlacement(PLACEMENT.N) // set placenement NEDE if current placement is empty
* discogs.setPlacement(PLACEMENT.N, force) // set placenement NEDE !!!


*/
('discogs loaded');

Put in you snippets with

const src = "COPY SHARED SRC URL"
fetch(src).then(e => e.text()).then(eval);