Improve ripping

ripper/rip_dvd.py

@@ -16,8 +16,8 @@ LOGFILE = "rip.log"
 NOTIFICATION_SOUND = "bell.oga"
 
 SERIES_TITLE_REGEX = r"S\d+[ _]?E(\d+)-(\d+)$"
-MAX_FILENAME_LEN_IN_TMP = 30  # dvdbackup cuts name of output files at 33 chars
-WAIT_FOR_DEVICE_TIME_SECONDS = 1
+MAX_FILENAME_LEN_IN_TMP = 25  # dvdbackup cuts name of output files at 33 chars
+WAIT_FOR_DEVICE_TIME_SECONDS = 3
 
 
 def main():
@@ -38,6 +38,7 @@ def main():
 
     if args.wait:
         wait_for_dev_to_exist(args)
+        wait_for_dev_to_be_readable(args)
 
     success = rip_to_tmp_dir(args)
     program_execution_time_str = get_program_execution_time_str(program_start_time)
@@ -125,17 +126,45 @@ def wait_for_dev_to_exist(args):
         time.sleep(WAIT_FOR_DEVICE_TIME_SECONDS)
 
 
+def wait_for_dev_to_be_readable(args):
+    while not is_dvd_readable(args):
+        print(
+            f"Device {args.dev} found, but not readable. Waiting {WAIT_FOR_DEVICE_TIME_SECONDS} sec..."
+        )
+        time.sleep(WAIT_FOR_DEVICE_TIME_SECONDS)
+
+
+def is_dvd_readable(args):
+    command = create_info_command(args)
+    proc = subprocess.run(command, stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT)
+    return proc.returncode != 255
+
+
 def rip_to_tmp_dir(args) -> bool:
     """Returns: success of command"""
     command = create_rip_command(args, TMP_DIR)
-    proc = subprocess.run(command, shell=True, capture_output=False)
+    proc = subprocess.run(command)
 
     return proc.returncode == 0
 
 
+def create_info_command(args):
+    return ["dvdbackup", "-i", args.dev, "-I"]
+
 def create_rip_command(args, dest):
-    shortened_title = args.title[:MAX_FILENAME_LEN_IN_TMP]
-    return f"dvdbackup -v -p -i '{args.dev}' -o '{dest}' -M -n \"{shortened_title}\""
+    shortened_title = shorten_title(args)
+    return [
+        "dvdbackup",
+        "-v",
+        "-p",
+        "-i",
+        args.dev,
+        "-o",
+        dest,
+        "-M",
+        "-n",
+        shortened_title,
+    ]
 
 
 def get_program_execution_time_str(program_start_time):
@@ -168,13 +197,17 @@ def send_notification(text):
 
 
 def mv_ripped_from_tmp_to_ripped_dir(args):
-    shortened_title = args.title[:MAX_FILENAME_LEN_IN_TMP]
+    shortened_title = shorten_title(args)
     src = os.path.join(TMP_DIR, shortened_title)
     dst = os.path.join(RIPPED_DIR, args.type, args.title)
 
     shutil.move(src, dst)
 
 
+def shorten_title(args):
+    return args.title[-MAX_FILENAME_LEN_IN_TMP:]
+
+
 def delete_tmp_dir():
     try:
         os.rmdir(os.path.join(TMP_DIR))