main : adds subcommands, move to Path and improve

Multiple changes to the main file, after this unisync becomes kind of
usable.
Add subcommands : this uses the 2 previous commits to add the
subcommands to unisync it is now possible to sync, add and mount.
pathlib : move from PosixPath to Path
Remove unused imports
Rename base_namespace to cli_args
Add some comments and TODOs

src/unisync/main.py

@@ -3,24 +3,29 @@
 
 import os
 from argparser import create_argparser
-from config import RootsConfig, ServerConfig, Config, load_config
+from runners import unisync_sync, unisync_add, unisync_mount
+from config import load_config
 from synchroniser import Synchroniser
-from pathlib import Path, PosixPath
+from pathlib import Path
 from paths import *
 
 def main():
-    parser = create_argparser()
-    base_namespace = parser.parse_args()
+    parser = create_argparser(unisync_sync, unisync_add, unisync_mount)
+    cli_args = parser.parse_args()
 
     config_path = os.path.expanduser("~/.config/unisync/config.ini")
-    if base_namespace.config != None and os.path.isfile(base_namespace.config):
-        config = load_config(base_namespace.config)
+    # Check if --config is set
+    if cli_args.config != None and os.path.isfile(cli_args.config):
+        config = load_config(cli_args.config)
     elif os.path.isfile(config_path):
         config = load_config(config_path)
     else:
-        # TODO make the command line arguments work and override the config options
+        # TODO replace the next line with something to do if no config file is found
+        config = load_config(config_path)
         pass
 
+    # TODO make the command line arguments work and override the config options
+
     synchroniser = Synchroniser(
             config.roots.remote,
             config.roots.local,
@@ -33,18 +38,7 @@ def main():
 
     paths_manager = PathsManager(Path(config.roots.local), config.other.cache_dir_path)
 
-    if synchroniser.create_ssh_master_connection() != 0:
-        print("Connection failed quitting")
-        return 1
-    print("Connected to the remote.")
-
-    #synchroniser.sync_files()
-    #synchroniser.update_links(background=False)
-    #synchroniser.mount_remote_dir()
-
-    synchroniser.close_ssh_master_connection()
-    print(paths_manager.get_paths_to_sync())
-
+    cli_args.func(synchroniser, paths_manager)
 
 
 if __name__ == "__main__":