feat: add --bunker-url to account login for non-interactive use

allows non-interactive bunker:// URL login without requiring --nsec,
by connecting to the remote signer and saving credentials to git config

3 files changed, 89 insertions, 12 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 930fe39..607afc8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fetch filters now request kind-5 deletion events for cached state and repo announcement events by `#e` tag (NIP-09), in addition to the existing `#a`-tagged filter; ensures deletions of these events are received even from clients that do not embed a repo coordinate in their deletion event
 - `FetchReport` now tracks and displays a count of kind-5 deletion events received (e.g. `"1 deletion"` in the fetch summary)
 - `ngit account login` nostrconnect flow now shows current signer relays and allows changing them
+- `ngit account login --bunker-url` - specify bunker URL for non-interactive nostrconnect login
 
 ### Fixed
 
diff --git a/src/bin/ngit/sub_commands/login.rs b/src/bin/ngit/sub_commands/login.rs
index 3acfb66..29152ed 100644
--- a/src/bin/ngit/sub_commands/login.rs
+++ b/src/bin/ngit/sub_commands/login.rs
@@ -11,7 +11,7 @@ use crate::{
     cli::{Cli, extract_signer_cli_arguments},
     client::{Client, Connect},
     git::Repo,
-    login::fresh::fresh_login_or_signup,
+    login::fresh::{fresh_login_or_signup, login_with_bunker_url},
 };
 
 #[derive(clap::Args)]
@@ -27,22 +27,31 @@ pub struct SubCommandArgs {
     /// signer relay for nostrconnect (can be used multiple times)
     #[arg(long = "signer-relay")]
     signer_relays: Vec<String>,
+
+    /// bunker:// URL from signer app for non-interactive remote signer login
+    #[arg(long = "bunker-url")]
+    bunker_url: Option<String>,
 }
 
 pub async fn launch(args: &Cli, command_args: &SubCommandArgs) -> Result<()> {
     // Early validation: check if we have required parameters in non-interactive
     // mode
     let signer_info = extract_signer_cli_arguments(args)?;
-    if Interactor::is_non_interactive() && signer_info.is_none() {
+    if Interactor::is_non_interactive()
+        && signer_info.is_none()
+        && command_args.bunker_url.is_none()
+    {
         use ngit::cli_interactor::cli_error;
         return Err(cli_error(
-            "requires --nsec or --interactive",
+            "requires --nsec, --bunker-url, or --interactive",
             &[
                 ("--nsec <key>", "provide secret key (nsec or hex)"),
-                ("--interactive", "for nostr connect or bunker login"),
+                ("--bunker-url <url>", "bunker:// URL from signer app"),
+                ("--interactive", "for interactive nostr connect login"),
             ],
             &[
                 "ngit account login --nsec <your-nsec>",
+                "ngit account login --bunker-url <bunker-url>",
                 "ngit account create",
             ],
         ));
@@ -61,14 +70,25 @@ pub async fn launch(args: &Cli, command_args: &SubCommandArgs) -> Result<()> {
 
     let (logged_out, log_in_locally_only) = logout(git_repo.as_ref(), command_args.local).await?;
     if logged_out || log_in_locally_only {
-        fresh_login_or_signup(
-            &git_repo.as_ref(),
-            client.as_ref(),
-            signer_info,
-            log_in_locally_only || command_args.local,
-            &command_args.signer_relays,
-        )
-        .await?;
+        if let Some(bunker_url) = &command_args.bunker_url {
+            login_with_bunker_url(
+                &git_repo.as_ref(),
+                client.as_ref(),
+                bunker_url,
+                log_in_locally_only || command_args.local,
+                &command_args.signer_relays,
+            )
+            .await?;
+        } else {
+            fresh_login_or_signup(
+                &git_repo.as_ref(),
+                client.as_ref(),
+                signer_info,
+                log_in_locally_only || command_args.local,
+                &command_args.signer_relays,
+            )
+            .await?;
+        }
     }
 
     // If not offline, disconnect the client
diff --git a/src/lib/login/fresh.rs b/src/lib/login/fresh.rs
index 0b5922b..8d3a806 100644
--- a/src/lib/login/fresh.rs
+++ b/src/lib/login/fresh.rs
@@ -112,6 +112,62 @@ pub async fn fresh_login_or_signup(
     Ok((signer, user_ref, source))
 }
 
+/// Non-interactive login using a `bunker://` URL provided directly.
+///
+/// Parses the URL, generates a fresh app key, connects to the remote signer,
+/// and saves the resulting credentials to git config.
+pub async fn login_with_bunker_url(
+    git_repo: &Option<&Repo>,
+    #[cfg(test)] client: Option<&MockConnect>,
+    #[cfg(not(test))] client: Option<&Client>,
+    bunker_url: &str,
+    save_local: bool,
+    signer_relays: &[String],
+) -> Result<(Arc<dyn NostrSigner>, UserRef, SignerInfoSource)> {
+    let url = NostrConnectURI::parse(bunker_url)
+        .context("invalid bunker:// URL - must be a valid bunker:// URI")?;
+
+    let (app_key, _) = generate_nostr_connect_app(client, signer_relays)?;
+
+    let printer = Arc::new(Mutex::new(Printer::default()));
+    {
+        let mut p = printer.lock().await;
+        p.println("connecting to remote signer...".to_string());
+    }
+
+    let (signer, user_public_key, bunker_uri) =
+        listen_for_remote_signer(&app_key, &url, printer).await?;
+
+    let signer_info = SignerInfo::Bunker {
+        bunker_uri: bunker_uri.to_string(),
+        bunker_app_key: app_key.secret_key().to_secret_hex(),
+        npub: Some(user_public_key.to_bech32()?),
+    };
+
+    let _ = save_to_git_config(git_repo, &signer_info, !save_local).await;
+
+    let user_ref = get_user_details(
+        &user_public_key,
+        client,
+        if let Some(git_repo) = git_repo {
+            Some(git_repo.get_path()?)
+        } else {
+            None
+        },
+        false,
+        false,
+    )
+    .await?;
+
+    let source = if save_local {
+        SignerInfoSource::GitLocal
+    } else {
+        SignerInfoSource::GitGlobal
+    };
+    print_logged_in_as(&user_ref, client.is_none(), &source)?;
+    Ok((signer, user_ref, source))
+}
+
 pub async fn get_fresh_nsec_signer() -> Result<
     Option<(
         Arc<dyn NostrSigner>,