feat(cli): validate AccessKey and display the user info in "gas auth"

tensorbay/cli/auth.py

@@ -5,17 +5,18 @@
 
 """Implementation of gas auth."""
 
-
 from configparser import ConfigParser
 from textwrap import indent
 from typing import Dict, Optional
 from urllib.parse import urljoin
 
 import click
 
+from ..exception import ResponseSystemError
 from .utility import (
     error,
     form_profile_value,
+    get_gas,
     is_accesskey,
     read_config,
     update_config,
@@ -57,8 +58,12 @@ def _implement_auth(  # pylint: disable=too-many-arguments
     else:
         error(f'Invalid argument "{arg1}"')
 
+    if is_accesskey(arg1):
+        _check_auth(arg1, arg2, obj["profile_name"])
+    else:
+        _check_auth(arg2, arg1, obj["profile_name"])
     _update_profile(config_parser, obj["profile_name"], arg1, arg2)
-    write_config(config_parser)
+    write_config(config_parser, show_message=False)
 
 
 def _get_auth(obj: Dict[str, str], config_parser: ConfigParser, is_all: bool) -> None:
@@ -132,3 +137,18 @@ def _check_args_and_options(arg1: str, arg2: str, get: bool, unset: bool, is_all
 def _echo_formatted_profile(name: str, value: str) -> None:
     formatted_value = indent(value, INDENT)
     click.echo(f"{name} = {formatted_value}\n")
+
+
+def _check_auth(access_key: str, url: str, profile_name: str) -> None:
+    gas_client = get_gas(access_key, url, profile_name)
+    try:
+        userinfo = gas_client.get_user()
+    except ResponseSystemError:
+        error(f"{access_key} is not a valid AccessKey")
+    else:
+        message = f"\nSuccessfully set authentication info of {userinfo.name}"
+        if userinfo.team:
+            message += f" in {click.style(userinfo.team.name, bold=True, fg='blue')} team"
+        if profile_name != "default":
+            message += f" into profile {click.style(profile_name, bold=True, fg='blue')}"
+        click.echo(f"{message}\n")