Update readme and remove unused cache

README.md

@@ -1,5 +1,7 @@
 # backup_imap
 
+Do a backup of an IMAP account in a folder.
+
 ## Requirements
 
 ## Installation
@@ -29,5 +31,22 @@ Ensure you have "C:\Users\${env:USERNAME}\AppData\Roaming\Python\Python${python_
 ## Usage
 
   ```bash
-backup_imap.sh [--debug-level|-d CRITICAL|ERROR|WARNING|INFO|DEBUG|NOTSET] # Other parameters
+Usage: backup_imap.py [OPTIONS]
+
+Options:
+  -d, --debug-level [CRITICAL|ERROR|WARNING|INFO|DEBUG|NOTSET]
+                                  Set the debug level for the standard output.
+  -l, --log-file TEXT             File to store all debug messages.
+  -s, --imap-server TEXT          Hostname or IP of the IMAP server
+                                  [required]
+  -p, --imap-port INTEGER         IMAP port to contact the server
+  -S, --use-ssl                   Use SSL to contact the IMAP server
+  -u, --imap-user TEXT            User to connect to IMAP server  [required]
+  -P, --imap-password TEXT        User password to conect to IMAP server
+                                  [required]
+  -m, --mailbox TEXT              Mailbox to backup
+  -F, --destination-folder TEXT   Folder to save the messages and folders
+                                  [required]
+  --config FILE                   Read configuration from FILE.
+  --help                          Show this message and exit.
 ```

backup_imap/backup_imap.py

@@ -47,10 +47,6 @@ class BackupImap:
                 'backup_imap.log'
             )
         self._init_log()
-        self._default_data = {
-            "last_update": 0,
-        }
-        self.data = self._read_cached_data()
         if not os.path.exists(self.config['destination_folder']):
             os.mkdir(self.config['destination_folder'])
 
@@ -200,33 +196,7 @@ class BackupImap:
             sys.exit(4)
 
     def close(self):
-        '''Close class and save data'''
-        self._save_cached_data(self.data)
-
-    def _read_cached_data(self):
-        if os.path.exists(self.config['cache_file']):
-            with open(self.config['cache_file'], 'r', encoding='utf-8') as cache_file:
-                try:
-                    cached_data = json.load(cache_file)
-                    if (
-                        'last_update' in cached_data and
-                        cached_data['last_update'] + self.config['max_cache_age'] > time.time()
-                    ):
-                        cached_data = self._default_data
-                except json.decoder.JSONDecodeError:
-                    cached_data = self._default_data
-                return cached_data
-        else:
-            return self._default_data
-
-    def _save_cached_data(self, data):
-        data['last_update'] = time.time()
-        with open(self.config['cache_file'], 'w', encoding='utf-8') as cache_file:
-            json.dump(data, cache_file, indent=2)
-        self._log.debug(
-            "Saved cached data in '%s'",
-            self.config['cache_file']
-        )
+        '''Close class'''
 
     def _init_log(self):
         ''' Initialize log object '''
@@ -285,12 +255,6 @@ class BackupImap:
     default=f"{LOG_FOLDER}/backup_imap.log",
     help="File to store all debug messages."
 )
-@click.option(
-    '--cache-file',
-    '-f',
-    default=f"{CACHE_FOLDER}/backup_imap.json",
-    help='Cache file to store data from each run',
-)
 @click.option(
     '--imap-server',
     '-s',
@@ -334,18 +298,6 @@ class BackupImap:
     required=True,
     help='Folder to save the messages and folders'
 )
-@click.option(
-    '--batch-size',
-    '-b',
-    default=1000,
-    help='Maximun number of messages to fetch per request'
-)
-@click.option(
-    '--max-cache-age',
-    '-a',
-    default=60*60*24*7,
-    help='Max age in seconds for the cache'
-)
 # @click.option("--dummy","-n", is_flag=True,
 # help="Don't do anything, just show what would be done.")
 @click_config_file.configuration_option()