Export HIT Tracker in multiple files instead of one large file

hitTrackerExporter.js

const fileSave = (data, name) => {
  const json = JSON.stringify(data);

  const save = document.createElement('a');
  save.href = window.URL.createObjectURL(new window.Blob([json], { type: 'application/json' }));
  save.download = `${name}.json`;

  document.body.appendChild(save);
  save.click();
  document.body.removeChild(save);
};

const hitTrackerExporter = async (maxHitsPerFile = 100000) => {
  let db;
  let count = 0;
  let index = 0;
  let indexFileSaved = 0;

  const data = {
    hits: [],
    days: [],
  };

  const open = window.indexedDB.open('hitTrackerDB', 1);

  open.onsuccess = (event) => {
    db = event.target.result;

    const transaction = db.transaction(['hit'], 'readonly');
    const objectStore = transaction.objectStore('hit');
    const objectStoreCount = objectStore.count();

    objectStoreCount.onsuccess = (event) => {
      count = event.target.result;
      console.log(db, count);

      const openCursor = objectStore.openCursor();

      openCursor.onsuccess = (event) => {
        const cursor = event.target.result;

        if (cursor) {
          index++;

          data.hits.push(cursor.value);

          if (data.hits.length === maxHitsPerFile) {
            fileSave({ ...data }, `HITs ${index - maxHitsPerFile + 1} to ${index} of ${count}`);
            data.hits = [];
            indexFileSaved = index;
          }

          cursor.continue();
        } else {
          fileSave({ ...data }, `HITs ${indexFileSaved + 1} to ${index} of ${count}`);
        }
      };
    };
  };
};

hitTrackerExporter();

How to use:

1. Open HIT Tracker in MTSv2
2. Open the console in HIT Tracker
3. Paste the code above into the console and press the Enter key
4. Wait while your database is exported