[pbs-devel] [PATCH proxmox] router: cli: added `ask_for_confirmation` helper

[Gabriel Goller]

Added `ask_for_confirmation` helper that outputs a prompt and
lets the user confirm or deny it. Implemented to close #4763.

Signed-off-by: Gabriel Goller <g.goller at proxmox.com>
---
 proxmox-router/src/cli/mod.rs | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/proxmox-router/src/cli/mod.rs b/proxmox-router/src/cli/mod.rs
index 208df4a..2366b47 100644
--- a/proxmox-router/src/cli/mod.rs
+++ b/proxmox-router/src/cli/mod.rs
@@ -12,11 +12,15 @@
 //! - Ability to create interactive commands (using ``rustyline``)
 //! - Supports complex/nested commands
 
-use std::collections::HashMap;
+use std::{
+    collections::HashMap,
+    io::{self, Write},
+};
 
 use crate::ApiMethod;
 
 mod environment;
+use anyhow::bail;
 pub use environment::*;
 
 mod shellword;
@@ -62,6 +66,19 @@ pub fn init_cli_logger(env_var_name: &str, default_log_level: &str) {
     .init();
 }
 
+pub fn ask_for_confirmation(query: String) -> Result<(), anyhow::Error> {
+    print!("{} [y/N]: ", query);
+    io::stdout().flush()?;
+    let stdin = io::stdin();
+    let mut line = String::new();
+    stdin.read_line(&mut line)?;
+    if line.trim() == "y" {
+        Ok(())
+    } else {
+        bail!("Aborted");
+    }
+}
+
 /// Define a simple CLI command.
 pub struct CliCommand {
     /// The Schema definition.
-- 
2.39.2