How to read file names of items in a Zipped Folder? Google App Script

I am attempting to read the names of files within a zipped folder on Google Drive. From there I will create new folders using a trimmed portion of the file name.

My below codes works, however the way I am reading the filename is to unzip it first, copy it to a temp location and read the filename. This function runs pretty slowly, my zipped file has 800+ files. Each one with a unique filename.

The code below first checks in the folder destination if a folder with yesterdays date as the title exists, if not it creates one. Then it checks a set folder for a zip file who's title contains yesterdays date. After finding it, it will loop through the zip file and extract each file within (jpegs) save them to a folder 'Temp' and retrieve a substring of the name. Then it checks the appropriate date folder to see if it has any folders that exist with the filename substring, if not it creates a new folder.

function CreateNewImageFolder() {
  const optionalArgs={supportsAllDrives: true};                                              // enables support for shared drive
  const timezone = Session.getScriptTimeZone();                                              // returns script timezone
  const afId = 'archivefolderID'                                           // Image Drive "Image_Archive" Folder ID
  const aDest = DriveApp.getFolderById(afId);                                                // returns 'Archive source' folder "Image_Archive"
  const op20Id = 'fixedfolderW/allfilenames'                                         // Image Drive "Folder that contains all possible filenames" Folder ID
  const op20 = DriveApp.getFolderById(op20Id);                                               // returns OP20 folder
  const tId = 'tempfolderID'                                            // Image Drive "temp" Folder ID
  const temp = DriveApp.getFolderById(tId);                                                  // returns OP20 folder "temp"
  
  var yday = Utilities.formatDate(GetYesterday(1), timezone, "MM-dd");                       // returns yesterdays date for file name search
  var yyear = Utilities.formatDate(GetYesterday(1), timezone, "yyyy-MM-dd");                     // returns yesterdays date + year for folder name search
    Logger.log("Yesterday: %s", yday);

//// Checks for existing Date Folder and creates a new one if not exist ///
  var datefold = aDest.searchFolders("title contains '"+yyear+"'");                           // search aDest for existing date folder
    if (datefold.hasNext()===true) {                                                        
      while (datefold.hasNext()) {
        var dfolder = datefold.next();
        Logger.log("Folder %s already exists", dfolder.getName());
      }
    } else{
        var dfolder=aDest.createFolder(yyear);                                                // if not exist create new folder in aDest
          Logger.log("New Date Folder Name: %s", dfolder.getName());
      }
    var dfoldId = dfolder.getId();
    var vDest = DriveApp.getFolderById(dfoldId);
      Logger.log("New Folder Destination: %s", vDest.getName());

//// loops through ZIP file iterator ////
  var zfi = op20.searchFiles("title contains '"+yday+"'");                                    // search op20 folder for Yesterdays Zip File 'file iterator'
    while (zfi.hasNext()){                                                                    // loops through ZIP file iterator
      var file = zfi.next();                                                                  // every loop sets active file to next
        Logger.log("Zip Folder: %s", file.getName());
      var fileBlob = file.getBlob();                                                         // get file blob
      fileBlob.setContentType("application/zip");                                             
      var unZippedfile = Utilities.unzip(fileBlob);                                          // unzipped file iterator

  //// loops all blob elements ////
      for (i=0; i<unZippedfile.length; i++) {                                                
        var uzf = temp.createFile(unZippedfile[i]);                                          // creates upzipped file in "temp" folder
        var fileName = uzf.getName().substring(0, 17);                                           // trims Image name string to first 17 characters
          Logger.log("unzipped File Name: %s", fileName);

    //// Checks for existing Folder and creates a new one if not exist ////    
        var vfold = vDest.searchFolders("title contains '"+fileName+"'");                      // search vDest for existing folder
        if (vfold.hasNext()===true) {    
          while (vfold.hasNext()) {
          var vfolder = vfold.next();
          Logger.log("Folder %s already exists", vfolder.getName());
          }
        } else{
          var vfolder=vDest.createFolder(fileName);                                                // if not exist create new folder in aDest
            Logger.log("New Folder Name: %s", vfolder.getName());
          }
        uzf.setTrashed(true);
      }
    }
}

Simple Example Zipped Folder Located at:

Root > Image_Archive > Station > Camera > Date > 'zippedfolderName_2022_10_23'

zipped folder contains several image files all starting with unique 17 character #. ex: 1ABCXXXXXXXXXXXX1

Desired Output

Root > Image_Archive > New_Folder (named with yesterdays date) > New_Folder (named using 17 character # ex: 1ABCXXXXXXXXXXXX1)