[App Service] az staticwebapp create: Allow creating Static Web Apps not connected to a github repo

src/azure-cli/azure/cli/command_modules/appservice/_help.py

@@ -2331,14 +2331,16 @@
 
 helps['staticwebapp create'] = """
     type: command
-    short-summary: Create a static app with content from a GitHub repository URL and on the provided branch. If the repo is under a Github organization, please ensure that the Azure CLI Github App has access to the organization. Access can be requested in the browser when using the "--login-with-github" argument. Access must be granted by the organization's admin.
+    short-summary: Create a static app. To provide content to the static web app and integrate with a Github repo, provide the Github repository URL (--source) and a branch (--branch). If the repo is under a Github organization, please ensure that the Azure CLI Github App has access to the organization. Access can be requested in the browser when using the "--login-with-github" argument. Access must be granted by the organization's admin.
     examples:
     - name: Create static app in a subscription.
       text: az staticwebapp create -n MyStaticAppName -g MyExistingRg
        -s https://github.com/JohnDoe/my-first-static-web-app -l WestUs2 -b master -t MyAccessToken
     - name: Create static app in a subscription, retrieving token interactively
       text: az staticwebapp create -n MyStaticAppName -g MyExistingRg
        -s https://github.com/JohnDoe/my-first-static-web-app -l WestUs2 -b master --login-with-github
+    - name: Create a static web app without any content and without a github integration
+      text: az staticwebapp create -n MyStaticAppName -g MyExistingRg
 """
 
 helps['staticwebapp update'] = """

src/azure-cli/azure/cli/command_modules/appservice/_params.py

@@ -986,16 +986,16 @@ def load_arguments(self, _):
         c.argument('hostname', options_list=['--hostname', '-n'], help='Name of the custom domain')
 
     with self.argument_context('staticwebapp', validator=validate_public_cloud) as c:
-        c.ignore('format_output')
-        c.argument('name', options_list=['--name', '-n'], metavar='NAME', help="Name of the static site")
-        c.argument('source', options_list=['--source', '-s'], help="URL for the repository of the static site.")
-        c.argument('token', options_list=['--token', '-t'],
+        c.argument('source', options_list=['--source', '-s'], help="URL for the repository of the static site.", arg_group="Github")
+        c.argument('token', options_list=['--token', '-t'], arg_group="Github",
                    help="A user's github repository token. This is used to setup the Github Actions workflow file and "
                         "API secrets. If you need to create a Github Personal Access Token, "
                         "please run with the '--login-with-github' flag or follow the steps found at the following link:\n"
                         "https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line")
-        c.argument('login_with_github', help="Interactively log in with Github to retrieve the Personal Access Token")
-        c.argument('branch', options_list=['--branch', '-b'], help="The target branch in the repository.")
+        c.argument('login_with_github', help="Interactively log in with Github to retrieve the Personal Access Token", arg_group="Github")
+        c.argument('branch', options_list=['--branch', '-b'], help="The target branch in the repository.", arg_group="Github")
+        c.ignore('format_output')
+        c.argument('name', options_list=['--name', '-n'], metavar='NAME', help="Name of the static site")
     with self.argument_context('staticwebapp environment') as c:
         c.argument('environment_name',
                    options_list=['--environment-name'], help="Name of the environment of static site")

src/azure-cli/azure/cli/command_modules/appservice/static_sites.py

@@ -364,8 +364,8 @@ def update_staticsite_users(cmd, name, roles, authentication_provider=None, user
                                           static_site_user_envelope=user_envelope)
 
 
-def create_staticsites(cmd, resource_group_name, name, location,  # pylint: disable=too-many-locals,
-                       source, branch, token=None,
+def create_staticsites(cmd, resource_group_name, name, location="centralus",  # pylint: disable=too-many-locals,
+                       source=None, branch=None, token=None,
                        app_location="/", api_location=None, output_location=None,
                        tags=None, no_wait=False, sku='Free', login_with_github=False, format_output=True):
     from azure.core.exceptions import ResourceNotFoundError as _ResourceNotFoundError
@@ -377,14 +377,19 @@ def create_staticsites(cmd, resource_group_name, name, location,  # pylint: disa
     except _ResourceNotFoundError:
         pass
 
-    if not token and not login_with_github:
-        raise_missing_token_suggestion()
-    elif not token:
-        from ._github_oauth import get_github_access_token
-        scopes = ["admin:repo_hook", "repo", "workflow"]
-        token = get_github_access_token(cmd, scopes)
-    elif token and login_with_github:
-        logger.warning("Both token and --login-with-github flag are provided. Will use provided token")
+    if source or branch or login_with_github or token:
+        if not source:
+            raise ValidationError("--source is required to make a static web app connected to a github repo")
+        if not branch:
+            raise ValidationError("--branch is required to make a static web app connected to a github repo")
+        if not token and not login_with_github:
+            raise_missing_token_suggestion()
+        elif not token:
+            from ._github_oauth import get_github_access_token
+            scopes = ["admin:repo_hook", "repo", "workflow"]
+            token = get_github_access_token(cmd, scopes)
+        elif token and login_with_github:
+            logger.warning("Both token and --login-with-github flag are provided. Will use provided token")
 
     StaticSiteARMResource, StaticSiteBuildProperties, SkuDescription = cmd.get_models(
         'StaticSiteARMResource', 'StaticSiteBuildProperties', 'SkuDescription')