diff --git a/downloader.py b/downloader.py
index a3e0584..01cab55 100644
--- a/downloader.py
+++ b/downloader.py
@@ -1,5 +1,8 @@
 """ask for an input file (.xlsx) and an output file (.pdf) and downloads and unite every invoice"""
 
+import sys
+import os
+import subprocess
 import shutil
 import tempfile
 import requests
@@ -30,6 +33,13 @@ def get_invoices_info(input_file_path: str) -> dict:
 
     return invoices
 
+def open_file(file_path):
+    """open a file with the default software"""
+    if sys.platform == "win32":
+        os.startfile(file_path) # pylint: disable=maybe-no-member
+    else:
+        opener = "open" if sys.platform == "darwin" else "xdg-open"
+        subprocess.call([opener, file_path])
 
 def download_invoices(input_file_path: str, output_file_path: str, username: str, password: str):
     """download invoices from CCSR"""
@@ -42,11 +52,10 @@ def download_invoices(input_file_path: str, output_file_path: str, username: str
     tmp_dir = tempfile.mkdtemp()
 
     invoices_count = len(invoices)
-    processed_count = 0
+    downloaded_count = 0
 
     for invoice_id, invoice in invoices.items():
         resp = session.get(invoice["url"])
-        processed_count += 1
         if resp.status_code == 200:
             with open(tmp_dir+"/"+invoice_id+".pdf", "wb") as output_file:
                 output_file.write(resp.content)
@@ -55,13 +64,14 @@ def download_invoices(input_file_path: str, output_file_path: str, username: str
                 try:
                     PyPDF2.PdfFileReader(open(invoice["path"], "rb"))
                 except (PyPDF2.utils.PdfReadError, OSError):
-                    logger.downloader_logger.error("%d/%d fattura %s corrotta!", processed_count, invoices_count, invoice_id)
+                    logger.downloader_logger.error("fattura %s corrotta!", invoice_id)
                     invoice["good"] = False
                 else:
-                    logger.downloader_logger.info("%d/%d scaricata fattura %s in %s", processed_count, invoices_count, invoice_id, invoice["path"])
+                    downloaded_count += 1
+                    logger.downloader_logger.info("%d/%d scaricata fattura %s in %s", downloaded_count, invoices_count, invoice_id, invoice["path"])
                     invoice["good"] = True
         else:
-            logger.downloader_logger.error("%d/%d impossibile scaricare fattura %s: %d", processed_count, invoices_count, invoice_id, resp.status_code)
+            logger.downloader_logger.error("impossibile scaricare fattura %s: %d", invoice_id, resp.status_code)
             invoice["good"] = False
 
     merger = PyPDF2.PdfFileMerger()
@@ -69,7 +79,9 @@ def download_invoices(input_file_path: str, output_file_path: str, username: str
         if invoice["good"]:
             merger.append(PyPDF2.PdfFileReader(open(invoice["path"], "rb")))
     merger.write(output_file_path)
-    
+
+    open_file(output_file_path)
+
     shutil.rmtree(tmp_dir, ignore_errors=True)
 
     logger.downloader_logger.info("Download terminato. Il pdf contenente le fatture si trova in %s", output_file_path)
diff --git a/fattureDownloader/fattureSanRossore.go b/fattureDownloader/fattureSanRossore.go
deleted file mode 100644
index a597f30..0000000
--- a/fattureDownloader/fattureSanRossore.go
+++ /dev/null
@@ -1,313 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"io"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"runtime"
-	"sort"
-	"strings"
-	"sync"
-
-	"github.com/extrame/xls"
-	"github.com/pdfcpu/pdfcpu/pkg/api"
-	"github.com/sqweek/dialog"
-	"mvdan.cc/xurls/v2"
-)
-
-var tmpDir string
-var outDir string
-var mw io.Writer
-var logPath string
-var exitWithError bool
-
-func getInvoiceIDs(fileName string) []string {
-	xlFile, err := xls.Open(fileName, "utf-8")
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile aprire il file xls: %v\n", err)
-	}
-
-	sheet := xlFile.GetSheet(0)
-	if sheet == nil {
-		exitWithError = true
-		log.Panicf("Impossibile aprire il foglio nell'xls: %v\n", err)
-	}
-
-	var invoiceIDs []string
-
-	for i := 0; i <= int(sheet.MaxRow); i++ {
-		row := sheet.Row(i)
-		if strings.Contains(row.Col(8), "CCSR") {
-			id := strings.ReplaceAll(row.Col(8), "/", "-")
-			invoiceIDs = append(invoiceIDs, id)
-		}
-	}
-	return invoiceIDs
-}
-
-func convertXLStoFODS(fileName string) string {
-	var sofficePath = "libreoffice"
-	if runtime.GOOS == "windows" {
-		sofficePath = filepath.FromSlash("C:/Program Files/LibreOffice/program/soffice.exe")
-	}
-	cmd := exec.Command(sofficePath, "--convert-to", "fods", "--outdir", outDir, fileName)
-	cmd.Stdout = mw
-	cmd.Stderr = mw
-	err := cmd.Run()
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile convertire l'XLS in FODS: %v\n", err)
-	}
-	return (outDir + "/" + strings.TrimSuffix(filepath.Base(fileName), filepath.Ext(fileName)) + ".fods")
-}
-
-func getInvoiceURLs(fileName string) []string {
-	fods := convertXLStoFODS(fileName)
-	f, err := os.Open(fods)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile aprire il FODS convertito: %v\n", err)
-	}
-	defer func() {
-		err = f.Close()
-		if err != nil {
-			log.Printf("Impossibile chiudere il file %v: %v\n", fods, err)
-		}
-	}()
-	var invoiceURLs []string
-	s := bufio.NewScanner(f)
-	for s.Scan() {
-		line := s.Text()
-		if strings.Contains(line, "http://report.casadicurasanrossore.it:9146/files/get?type=invoice&amp;id=") {
-			url := xurls.Strict().FindString(line)
-			url = strings.ReplaceAll(url, "&amp;", "&")
-			invoiceURLs = append(invoiceURLs, url)
-		}
-	}
-	if err := s.Err(); err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile leggere dal file %v: %v\n", fods, err)
-	}
-	return invoiceURLs
-}
-
-func checkFile(fileName string) string {
-	_, err := os.Stat(fileName)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Errore nell'apertura del file %v: %v\n", fileName, err)
-	}
-	absPath, err := filepath.Abs(fileName)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile recuperare il percorso assoluto del file %v: %v\n", fileName, err)
-	}
-	return absPath
-}
-
-func downloadFile(fileName string, url string) error {
-	resp, err := http.Get(url)
-
-	if err != nil {
-		resp.Body.Close()
-		return err
-	}
-
-	out, err := os.Create(fileName)
-	if err != nil {
-		out.Close()
-		return err
-	}
-
-	_, err = io.Copy(out, resp.Body)
-	out.Close()
-	resp.Body.Close()
-
-	return err
-}
-
-func createTmpDir() string {
-	dir := filepath.FromSlash(tmpDir + "/fattureSanRossore")
-
-	if _, err := os.Stat(dir); err == nil {
-		log.Printf("Pulizia della directory temporanea pre-esistente")
-		err := os.RemoveAll(dir)
-		if err != nil {
-			exitWithError = true
-			log.Panicf("Impossibile eliminare la directory temporanea pre-esistente %v: %v\n", dir, err)
-		}
-	} else if !os.IsNotExist(err) {
-		exitWithError = true
-		log.Panicf("Impossibile eseguire lo stat sulla directory temporanea %v: %v\n", dir, err)
-	}
-	err := os.Mkdir(dir, os.ModePerm)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile creare la directory temporanea di salvataggio %v: %v\n", dir, err)
-	}
-
-	return dir
-}
-
-func downloadInvoices(ids []string, urls []string) []string {
-	if len(ids) != len(urls) {
-		exitWithError = true
-		log.Printf("Il numero di fatture da scaricare non corrisponde al numero di URL individuati nel file. IDs: %d/URLs: %d", len(ids), len(urls))
-	}
-
-	wg := sync.WaitGroup{}
-	sem := make(chan bool, 30)
-	mu := sync.Mutex{}
-	invoiceNum := minOf(len(ids), len(urls))
-	downloadCount := 0
-	downloadedFiles := make([]string, 0)
-
-	log.Printf("Inizio il download di %d fatture\n", invoiceNum)
-	for i := 0; i < invoiceNum; i++ {
-		id := ids[i]
-		url := urls[i]
-		out := filepath.FromSlash(outDir + "/" + id + ".pdf")
-
-		wg.Add(1)
-		go func(i int) {
-			sem <- true
-			log.Printf("Scaricamento di %v\n", id)
-			err := downloadFile(out, url)
-			if err != nil {
-				log.Printf("Impossibile scaricare il file %v: %v\n", url, err)
-			} else if api.ValidateFile(out, nil) != nil {
-				log.Printf("Errore nella validazione del file %v\n", out)
-			} else {
-				mu.Lock()
-				downloadedFiles = append(downloadedFiles, out)
-				downloadCount++
-				mu.Unlock()
-			}
-			<-sem
-			wg.Done()
-		}(i)
-	}
-	wg.Wait()
-	log.Printf("Scaricate %d/%d fatture\n", downloadCount, invoiceNum)
-	sort.Strings(downloadedFiles)
-	return downloadedFiles
-}
-
-func mergeInvoices(files []string) string {
-	out, err := dialog.File().Filter("PDF files", "pdf").Title("Scegli dove salvare le fatture unite").Save()
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile recuperare il file selezionato: %v\n", err)
-	}
-	if filepath.Ext(out) == "" {
-		out += ".pdf"
-	}
-	err = api.MergeFile(files, out, nil)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile unire i pdf: %v\nFatture singole non rimosse\n", err)
-	}
-	return out
-}
-
-func openPDF(fileName string) {
-	var cmd *exec.Cmd
-	if runtime.GOOS == "windows" {
-		cmd = exec.Command("cmd", "/C start "+fileName)
-
-	} else {
-		cmd = exec.Command("xdg-open", fileName)
-	}
-	cmd.Stdout = mw
-	cmd.Stderr = mw
-	err := cmd.Start()
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile aprire il pdf con le fatture unite: %v\n", err)
-	}
-}
-
-func cleanTmpDir() {
-	files, err := ioutil.ReadDir(outDir)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile recuperare la lista di file creati nella directory temporanea: %v\n", err)
-	}
-	for _, file := range files {
-		err = os.Remove(filepath.FromSlash(outDir + "/" + file.Name()))
-		if err != nil {
-			log.Printf("Impossibile eliminare la fattura singola %v: %v\n", file, err)
-		}
-	}
-	err = os.Remove(outDir)
-	if err != nil {
-		log.Printf("Impossibile eliminare la directory temporanea %v: %v\n", outDir, err)
-	}
-}
-
-func minOf(vars ...int) int {
-	min := vars[0]
-
-	for _, i := range vars {
-		if min > i {
-			min = i
-		}
-	}
-
-	return min
-}
-
-func main() {
-	exitWithError = false
-	args := os.Args
-	tmpDir = os.TempDir()
-
-	if runtime.GOOS == "linux" {
-		logPath = tmpDir + "/log_fattureSanRossore.log"
-	} else {
-		logPath = filepath.FromSlash(tmpDir + "/log_fattureSanRossore.txt")
-	}
-	logFile, err := os.OpenFile(filepath.FromSlash(logPath), os.O_CREATE|os.O_TRUNC|os.O_RDWR, 0666)
-	if err != nil {
-		exitWithError = true
-		log.Panicf("Impossibile creare il file di log: %v\n", err)
-	}
-	mw = io.MultiWriter(os.Stderr, logFile)
-	log.SetOutput(mw)
-
-	defer func() {
-		if !exitWithError {
-			cleanTmpDir()
-		} else {
-			log.Println("I file temporanei non sono stati eliminati per poterli riesaminare")
-		}
-		log.Printf("Log file salvato in %v\n", logPath)
-	}()
-
-	outDir = createTmpDir()
-
-	var fileName string
-	if len(args) < 2 {
-		var err error
-		fileName, err = dialog.File().Filter("XLS files", "xls").Load()
-		if err != nil {
-			exitWithError = true
-			log.Panicf("Impossibile recuperare il file selezionato: %v\n", err)
-		}
-	} else {
-		fileName = args[1]
-	}
-
-	filePath := checkFile(fileName)
-	IDs := getInvoiceIDs(filePath)
-	URLs := getInvoiceURLs(filePath)
-	dlFiles := downloadInvoices(IDs, URLs)
-	pdf := mergeInvoices(dlFiles)
-	openPDF(pdf)
-}
diff --git a/fattureDownloader/go.mod b/fattureDownloader/go.mod
deleted file mode 100644
index ae6f420..0000000
--- a/fattureDownloader/go.mod
+++ /dev/null
@@ -1,12 +0,0 @@
-module github.com/Noettore/fattureSanRossore/fattureDownloader
-
-go 1.14
-
-require (
-	github.com/extrame/ole2 v0.0.0-20160812065207-d69429661ad7 // indirect
-	github.com/extrame/xls v0.0.1
-	github.com/gotk3/gotk3 v0.4.0 // indirect
-	github.com/pdfcpu/pdfcpu v0.3.2
-	github.com/sqweek/dialog v0.0.0-20200304031853-0dcd55bfe06a
-	mvdan.cc/xurls/v2 v2.2.0
-)
diff --git a/fattureDownloader/go.sum b/fattureDownloader/go.sum
deleted file mode 100644
index 5143524..0000000
--- a/fattureDownloader/go.sum
+++ /dev/null
@@ -1,45 +0,0 @@
-github.com/BurntSushi/freetype-go v0.0.0-20160129220410-b763ddbfe298/go.mod h1:D+QujdIlUNfa0igpNMk6UIvlb6C252URs4yupRUV4lQ=
-github.com/BurntSushi/graphics-go v0.0.0-20160129215708-b43f31a4a966/go.mod h1:Mid70uvE93zn9wgF92A/r5ixgnvX8Lh68fxp9KQBaI0=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/BurntSushi/xgbutil v0.0.0-20160919175755-f7c97cef3b4e/go.mod h1:uw9h2sd4WWHOPdJ13MQpwK5qYWKYDumDqxWWIknEQ+k=
-github.com/TheTitanrain/w32 v0.0.0-20180517000239-4f5cfb03fabf h1:FPsprx82rdrX2jiKyS17BH6IrTmUBYqZa/CXT4uvb+I=
-github.com/TheTitanrain/w32 v0.0.0-20180517000239-4f5cfb03fabf/go.mod h1:peYoMncQljjNS6tZwI9WVyQB3qZS6u79/N3mBOcnd3I=
-github.com/extrame/ole2 v0.0.0-20160812065207-d69429661ad7 h1:n+nk0bNe2+gVbRI8WRbLFVwwcBQ0rr5p+gzkKb6ol8c=
-github.com/extrame/ole2 v0.0.0-20160812065207-d69429661ad7/go.mod h1:GPpMrAfHdb8IdQ1/R2uIRBsNfnPnwsYE9YYI5WyY1zw=
-github.com/extrame/xls v0.0.1 h1:jI7L/o3z73TyyENPopsLS/Jlekm3nF1a/kF5hKBvy/k=
-github.com/extrame/xls v0.0.1/go.mod h1:iACcgahst7BboCpIMSpnFs4SKyU9ZjsvZBfNbUxZOJI=
-github.com/frankban/quicktest v1.5.0/go.mod h1:jaStnuzAqU1AJdCO0l53JDCJrVDKcS03DbaAcR7Ks/o=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/gotk3/gotk3 v0.4.0 h1:TIuhyQitGeRTxOQIV3AJlYtEWWJpC74JHwAIsxlH8MU=
-github.com/gotk3/gotk3 v0.4.0/go.mod h1:Eew3QBwAOBTrfFFDmsDE5wZWbcagBL1NUslj1GhRveo=
-github.com/hhrutter/lzw v0.0.0-20190827003112-58b82c5a41cc/go.mod h1:yJBvOcu1wLQ9q9XZmfiPfur+3dQJuIhYQsMGLYcItZk=
-github.com/hhrutter/lzw v0.0.0-20190829144645-6f07a24e8650 h1:1yY/RQWNSBjJe2GDCIYoLmpWVidrooriUr4QS/zaATQ=
-github.com/hhrutter/lzw v0.0.0-20190829144645-6f07a24e8650/go.mod h1:yJBvOcu1wLQ9q9XZmfiPfur+3dQJuIhYQsMGLYcItZk=
-github.com/hhrutter/tiff v0.0.0-20190829141212-736cae8d0bc7 h1:o1wMw7uTNyA58IlEdDpxIrtFHTgnvYzA8sCQz8luv94=
-github.com/hhrutter/tiff v0.0.0-20190829141212-736cae8d0bc7/go.mod h1:WkUxfS2JUu3qPo6tRld7ISb8HiC0gVSU91kooBMDVok=
-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/mattn/go-gtk v0.0.0-20180216084204-5a311a1830ab/go.mod h1:PwzwfeB5syFHXORC3MtPylVcjIoTDT/9cvkKpEndGVI=
-github.com/mattn/go-pointer v0.0.0-20171114154726-1d30dc4b6f28/go.mod h1:2zXcozF6qYGgmsG+SeTZz3oAbFLdD3OWqnUbNvJZAlc=
-github.com/pdfcpu/pdfcpu v0.3.2 h1:oHnvW3KUed/jVLnNcN5FyJsmInXAyyfoZ4yG3mxJdk8=
-github.com/pdfcpu/pdfcpu v0.3.2/go.mod h1:/ULj8B76ZnB4445B0yuSASQqlN0kEO+khtEnmPdEoXU=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/rogpeppe/go-internal v1.5.2/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
-github.com/skelterjohn/go.wde v0.0.0-20180104102407-a0324cbf3ffe/go.mod h1:zXxNsJHeUYIqpg890APBNEn9GoCbA4Cdnvuv3mx4fBk=
-github.com/sqweek/dialog v0.0.0-20200304031853-0dcd55bfe06a h1:BHv3lo0aZg2IPfeBfgYFjq48DoKehP+JC9dtACUEmT4=
-github.com/sqweek/dialog v0.0.0-20200304031853-0dcd55bfe06a/go.mod h1:QSrNdZLZB8VoFPGlZ2vDuA2oNaVdhld3g0PZLc7soX8=
-github.com/tealeg/xlsx v1.0.5 h1:+f8oFmvY8Gw1iUXzPk+kz+4GpbDZPK1FhPiQRd+ypgE=
-github.com/tealeg/xlsx/v2 v2.0.1 h1:RP+VEscpPFjH2FnpKh1p9HVLAk1htqb9Urcxi2AU1ns=
-github.com/tealeg/xlsx/v2 v2.0.1/go.mod h1:l9GvhCCjdaIGkAyZcFedDALcYcXUOei55f6umRMOz9c=
-golang.org/x/image v0.0.0-20190823064033-3a9bac650e44/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20191214001246-9130b4cfad52 h1:2fktqPPvDiVEEVT/vSTeoUPXfmRxRaGy6GU8jypvEn0=
-golang.org/x/image v0.0.0-20191214001246-9130b4cfad52/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
-mvdan.cc/xurls v1.1.0 h1:kj0j2lonKseISJCiq1Tfk+iTv65dDGCl0rTbanXJGGc=
-mvdan.cc/xurls/v2 v2.2.0 h1:NSZPykBXJFCetGZykLAxaL6SIpvbVy/UFEniIfHAa8A=
-mvdan.cc/xurls/v2 v2.2.0/go.mod h1:EV1RMtya9D6G5DMYPGD8zTQzaHet6Jh8gFlRgGRJeO8=
diff --git a/fatture_ccsr.py b/fatture_ccsr.py
index 4619110..eae7c33 100644
--- a/fatture_ccsr.py
+++ b/fatture_ccsr.py
@@ -147,6 +147,7 @@ class FattureCCSRFrame(wx.Frame):
     def file_picker_changed(self, event):
         """event raised when the input file path is changed"""
         self.input_file_path = event.GetEventObject().GetPath()
+        #TODO: error frame
         try:
             self.input_file_ext = utils.file_extension(self.input_file_path, (".xml", ".csv", ".xlsx"))
         except exc.NoFileError as handled_exception:
@@ -185,6 +186,7 @@ class FattureCCSRFrame(wx.Frame):
                 return
             self.log_dialog = LogDialog(self, "Conversione delle fatture in TRAF2000", CONVERT_ACTION)
             self.log_dialog.Show()
+            #TODO: error frame
             try:
                 traf2000_converter.convert(self.input_file_path, self.output_file_path)
             except exc.NoFileError as handled_exception: