Adds shell completion generation.

Cargo.lock

@@ -558,6 +558,15 @@ dependencies = [
  "strsim",
 ]
 
+[[package]]
+name = "clap_complete"
+version = "4.6.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be2ad0423bdbbb0e25bc89add796f3559706d4a95e1bc98e4d9662a957b6a19"
+dependencies = [
+ "clap",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.6.4"
@@ -2492,6 +2501,7 @@ name = "nut"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "clap_complete",
  "indicatif",
  "nextcloud_client",
  "open",

Tasks.md

@@ -71,7 +71,6 @@ This document defines the complete project roadmap and task tracking system for
 | ID | Title | Status | Type |
 |---|---|---|---|
 | [NUT-019](#nut-019) | Implement Homebrew/Winget/Chocolatey Manifests | Triage | Chore |
-| [NUT-022](#nut-022) | Implement CLI Shell Completions Generation | Triage | Feature |
 | [NUT-023](#nut-023) | Write Comprehensive CLI Documentation and Automation Guides | Triage | Chore |
 | [NUT-024](#nut-024) | Create Docker/Podman Nextcloud Integration Test Harness | Triage | Foundation |
 | [NUT-001](#nut-001) | Establish Repository Structure | Fixed | Foundation |
@@ -94,6 +93,7 @@ This document defines the complete project roadmap and task tracking system for
 | [NUT-018](#nut-018) | Implement Packaging for macOS, Windows, Linux | Fixed | Chore |
 | [NUT-020](#nut-020) | Write Documentation + Examples | Fixed | Chore |
 | [NUT-021](#nut-021) | Support Headless & SSH Remote Authentication Modes | Fixed | Feature |
+| [NUT-022](#nut-022) | Implement CLI Shell Completions Generation | Fixed | Feature |
 
 ---
 
@@ -522,20 +522,20 @@ Ensure smooth authentication experiences when running the CLI over SSH or in hea
 - NUT-008
 
 
-<a id="nut-022" class="task" data-status="triage" data-task-type="feature"></a>
+<a id="nut-022" class="task" data-status="done" data-task-type="feature"></a>
 ### Implement CLI Shell Completions Generation  
 **ID:** NUT-022  
-**Status:** Triage  
+**Status:** Fixed  
 **Type:** Feature  
 
 **Description:**  
 Add automated shell completion script generation using `clap_complete` for major shells (`bash`, `zsh`, `fish`, `powershell`, `elvish`).
 
 **Requirements:**  
-- [ ] Add `clap_complete` crate dependency  
-- [ ] Implement `nut completions <SHELL>` subcommand  
-- [ ] Support `bash`, `zsh`, `fish`, `powershell`, and `elvish` output to stdout  
-- [ ] Include quick installation instructions in command help  
+- [x] Add `clap_complete` crate dependency  
+- [x] Implement `nut completions <SHELL>` subcommand  
+- [x] Support `bash`, `zsh`, `fish`, `powershell`, and `elvish` output to stdout  
+- [x] Include quick installation instructions in command help  
 
 **Dependencies:**  
 - NUT-008

cli/Cargo.toml

@@ -6,6 +6,7 @@ edition = "2024"
 [dependencies]
 nextcloud_client = { path = "../nextcloud_client" }
 clap = { version = "4.5", features = ["derive", "cargo"] }
+clap_complete = "4.5"
 tokio = { version = "1", features = ["full"] }
 reqwest = { version = "0.12", default-features = false, features = ["json", "default-tls"] }
 open = "5.3"

cli/src/main.rs

@@ -1,4 +1,5 @@
-use clap::{Args, Parser, Subcommand};
+use clap::{Args, CommandFactory, Parser, Subcommand};
+use clap_complete::{generate, Shell};
 use indicatif::{ProgressBar, ProgressDrawTarget, ProgressStyle};
 use serde::Serialize;
 use std::fs;
@@ -39,6 +40,13 @@ enum Commands {
 
     /// Quick alias to list all configured accounts
     Accounts(AccountListArgs),
+
+    /// Generate shell completion scripts for bash, zsh, fish, powershell, or elvish
+    Completions {
+        /// Target shell to generate completions for
+        #[arg(value_enum)]
+        shell: Shell,
+    },
 }
 
 #[derive(Args, Debug, PartialEq)]
@@ -207,6 +215,10 @@ async fn main() {
             handle_account_set_default(&account)
         }
         Commands::Account(AccountCommands::Delete { account }) => handle_account_delete(&account),
+        Commands::Completions { shell } => {
+            handle_completions(shell);
+            Ok(())
+        }
     };
 
     if let Err(err) = result {
@@ -215,6 +227,12 @@ async fn main() {
     }
 }
 
+/// Generate shell completion scripts for supported shells.
+fn handle_completions(shell: Shell) {
+    let mut cmd = Cli::command();
+    generate(shell, &mut cmd, "nut", &mut io::stdout());
+}
+
 /// Handle interactive or non-interactive login flows.
 async fn handle_login(args: LoginArgs) -> Result<()> {
     let server_url = ClientConfig::normalize_url(&args.server_url)?;
@@ -822,4 +840,35 @@ mod tests {
             _ => panic!("Expected Accounts list command"),
         }
     }
+
+    #[test]
+    fn test_cli_completions_parsing() {
+        let shells = [
+            ("bash", Shell::Bash),
+            ("zsh", Shell::Zsh),
+            ("fish", Shell::Fish),
+            ("powershell", Shell::PowerShell),
+            ("elvish", Shell::Elvish),
+        ];
+
+        for (name, expected_shell) in shells {
+            let parsed = Cli::try_parse_from(&["nut", "completions", name]).unwrap();
+            match parsed.command {
+                Commands::Completions { shell } => {
+                    assert_eq!(shell, expected_shell);
+                }
+                _ => panic!("Expected Completions command for shell {name}"),
+            }
+
+            let mut buf = Vec::new();
+            let mut cmd = Cli::command();
+            generate(expected_shell, &mut cmd, "nut", &mut buf);
+            assert!(!buf.is_empty(), "Generated completion for {name} should not be empty");
+            let output_str = String::from_utf8(buf).expect("Completions should be valid UTF-8");
+            assert!(
+                output_str.contains("nut"),
+                "Completion output should contain 'nut'"
+            );
+        }
+    }
 }