音楽で楽しみましょう！-Let's have fun with music!-

Signed-off-by: Shin'ya Minazuki <shinyoukai@laidback.moe>

api/funquail_api/cli/base.py

@@ -0,0 +1,66 @@
+import functools
+
+import click
+
+
+@click.group()
+def cli():
+    pass
+
+
+def confirm_action(f, id_var, message_template="Do you want to proceed?"):
+    @functools.wraps(f)
+    def action(*args, **kwargs):
+        if id_var:
+            id_value = kwargs[id_var]
+            message = message_template.format(len(id_value))
+        else:
+            message = message_template
+        if not kwargs.pop("no_input", False) and not click.confirm(message, abort=True):
+            return
+
+        return f(*args, **kwargs)
+
+    return action
+
+
+def delete_command(
+    group,
+    id_var="id",
+    name="rm",
+    message_template="Do you want to delete {} objects? This action is irreversible.",
+):
+    """
+    Wrap a command to ensure it asks for confirmation before deletion, unless the --no-input
+    flag is provided
+    """
+
+    def decorator(f):
+        decorated = click.option("--no-input", is_flag=True)(f)
+        decorated = confirm_action(
+            decorated, id_var=id_var, message_template=message_template
+        )
+        return group.command(name)(decorated)
+
+    return decorator
+
+
+def update_command(
+    group,
+    id_var="id",
+    name="set",
+    message_template="Do you want to update {} objects? This action may have irreversible consequnces.",
+):
+    """
+    Wrap a command to ensure it asks for confirmation before deletion, unless the --no-input
+    flag is provided
+    """
+
+    def decorator(f):
+        decorated = click.option("--no-input", is_flag=True)(f)
+        decorated = confirm_action(
+            decorated, id_var=id_var, message_template=message_template
+        )
+        return group.command(name)(decorated)
+
+    return decorator