client: error out on non-tty interactivity

src/client/commands/create_user.rs

@@ -1,3 +1,5 @@
+use std::io::IsTerminal;
+
 use clap::Parser;
 use clap_complete::ArgValueCompleter;
 use dialoguer::Confirm;
@@ -78,6 +80,15 @@ pub async fn create_users(
             .filter_map(|(username, result)| result.as_ref().ok().map(|()| username))
             .collect::<Vec<_>>();
 
+        if !std::io::stdin().is_terminal()
+            && !args.no_password
+            && !successfully_created_users.is_empty()
+        {
+            anyhow::bail!(
+                "Cannot prompt for passwords in non-interactive mode. Use --no-password to skip setting passwords."
+            );
+        }
+
         for username in successfully_created_users {
             if !args.no_password
                 && Confirm::new()

src/client/commands/drop_db.rs

@@ -1,3 +1,5 @@
+use std::io::IsTerminal;
+
 use clap::Parser;
 use clap_complete::ArgValueCompleter;
 use dialoguer::Confirm;
@@ -41,6 +43,12 @@ pub async fn drop_databases(
         anyhow::bail!("No database names provided");
     }
 
+    if !std::io::stdin().is_terminal() && !args.yes {
+        anyhow::bail!(
+            "Cannot prompt for confirmation in non-interactive mode. Use --yes to automatically confirm."
+        );
+    }
+
     if !args.yes {
         let confirmation = Confirm::new()
             .with_prompt(format!(
@@ -53,7 +61,6 @@ pub async fn drop_databases(
             ))
             .interact()?;
 
-        //
         if !confirmation {
             // TODO: should we return with an error code here?
             println!("Aborting drop operation.");

src/client/commands/drop_user.rs

@@ -1,3 +1,5 @@
+use std::io::IsTerminal;
+
 use clap::Parser;
 use clap_complete::ArgValueCompleter;
 use dialoguer::Confirm;
@@ -41,6 +43,12 @@ pub async fn drop_users(
         anyhow::bail!("No usernames provided");
     }
 
+    if !std::io::stdin().is_terminal() && !args.yes {
+        anyhow::bail!(
+            "Cannot prompt for confirmation in non-interactive mode. Use --yes to automatically confirm."
+        );
+    }
+
     if !args.yes {
         let confirmation = Confirm::new()
             .with_prompt(format!(

src/client/commands/edit_privs.rs

@@ -1,4 +1,7 @@
-use std::collections::{BTreeMap, BTreeSet};
+use std::{
+    collections::{BTreeMap, BTreeSet},
+    io::IsTerminal,
+};
 
 use anyhow::Context;
 use clap::{Args, Parser};
@@ -213,6 +216,11 @@ pub async fn edit_database_privileges(
     };
 
     let diffs: BTreeSet<DatabasePrivilegesDiff> = if privs.is_empty() {
+        if !std::io::stdin().is_terminal() {
+            anyhow::bail!(
+                "Cannot launch editor in non-interactive mode. Please provide privileges via command line arguments."
+            );
+        }
         let privileges_to_change =
             edit_privileges_with_editor(&existing_privilege_rows, use_database.as_ref())?;
         diff_privileges(&existing_privilege_rows, &privileges_to_change)
@@ -275,7 +283,8 @@ pub async fn edit_database_privileges(
     println!("The following changes will be made:\n");
     println!("{}", display_privilege_diffs(&diffs));
 
-    if !args.yes
+    if std::io::stdin().is_terminal()
+        && !args.yes
         && !Confirm::new()
             .with_prompt("Do you want to apply these changes?")
             .default(false)

src/client/commands/passwd_user.rs

@@ -1,4 +1,4 @@
-use std::path::PathBuf;
+use std::{io::IsTerminal, path::PathBuf};
 
 use anyhow::Context;
 use clap::Parser;
@@ -88,6 +88,11 @@ pub async fn passwd_user(
             .context("Failed to read password from stdin")?;
         buffer.trim().to_string()
     } else {
+        if !std::io::stdin().is_terminal() {
+            anyhow::bail!(
+                "Cannot prompt for password in non-interactive mode. Use --stdin or --password-file to provide the password."
+            );
+        }
         read_password_from_stdin_with_double_check(&args.username)?
     };