trying to add get_client function again

fedn/cli/client_cmd.py

@@ -69,6 +69,40 @@ def list_clients(ctx, protocol: str, host: str, port: str, token: str = None, n_
     except requests.exceptions.ConnectionError:
         click.echo(f"Error: Could not connect to {url}")
 
+@click.option("-p", "--protocol", required=False, default=CONTROLLER_DEFAULTS["protocol"], help="Communication protocol of controller (api)")
+@click.option("-H", "--host", required=False, default=CONTROLLER_DEFAULTS["host"], help="Hostname of controller (api)")
+@click.option("-P", "--port", required=False, default=CONTROLLER_DEFAULTS["port"], help="Port of controller (api)")
+@click.option("-t", "--token", required=False, help="Authentication token")
+@click.option("-id", "--id", required=True, help="Client ID")
+@client_cmd.command("get")
+@click.pass_context
+def get_client(ctx, protocol: str, host: str, port: str, token: str = None, id: str = None):
+    """Return:
+    ------
+    - result: client with given id
+
+    """
+    url = get_api_url(protocol=protocol, host=host, port=port, endpoint="clients")
+    headers = {}
+
+
+    _token = get_token(token)
+
+    if _token:
+        headers["Authorization"] = _token
+
+    if id:
+        url = f"{url}{id}"
+
+
+    click.echo(f"\nRetrieving client: {url}\n")
+    click.echo(f"Headers: {headers}")
+    try:
+        response = requests.get(url, headers=headers)
+        print_response(response, "client", id)
+    except requests.exceptions.ConnectionError:
+        click.echo(f"Error: Could not connect to {url}")
+
 
 @client_cmd.command("start-v1")
 @click.option("-d", "--discoverhost", required=False, help="Hostname for discovery services(reducer).")