feat(login): `ngit login` prompt to logout

if a local and or global account is already logged in, prompt to
logout before overwriting with new login details

1 files changed, 65 insertions, 8 deletions

diff --git a/src/bin/ngit/sub_commands/login.rs b/src/bin/ngit/sub_commands/login.rs
index 390f431..df45975 100644
--- a/src/bin/ngit/sub_commands/login.rs
+++ b/src/bin/ngit/sub_commands/login.rs
@@ -1,5 +1,10 @@
 use anyhow::{Context, Result};
 use clap;
+use ngit::{
+    cli_interactor::{Interactor, InteractorPrompt, PromptChoiceParms},
+    git::remove_git_config_item,
+    login::{existing::load_existing_login, SignerInfoSource},
+};
 
 use crate::{
     cli::{extract_signer_cli_arguments, Cli},
@@ -29,20 +34,22 @@ pub async fn launch(args: &Cli, command_args: &SubCommandArgs) -> Result<()> {
     };
 
     let git_repo_result = Repo::discover().context("cannot find a git repository");
-    let git_repo_option = {
+    let git_repo = {
         match git_repo_result {
             Ok(git_repo) => Some(git_repo),
             Err(_) => None,
         }
     };
 
-    fresh_login_or_signup(
-        &git_repo_option.as_ref(),
-        client.as_ref(),
-        extract_signer_cli_arguments(args)?,
-        command_args.local,
-    )
-    .await?;
+    if logout(git_repo.as_ref(), command_args.local).await? {
+        fresh_login_or_signup(
+            &git_repo.as_ref(),
+            client.as_ref(),
+            extract_signer_cli_arguments(args)?,
+            command_args.local,
+        )
+        .await?;
+    }
 
     // If not offline, disconnect the client
     if let Some(client) = client {
@@ -50,3 +57,53 @@ pub async fn launch(args: &Cli, command_args: &SubCommandArgs) -> Result<()> {
     }
     Ok(())
 }
+
+async fn logout(git_repo: Option<&Repo>, local_only: bool) -> Result<bool> {
+    for source in if local_only {
+        vec![SignerInfoSource::GitLocal]
+    } else {
+        vec![SignerInfoSource::GitLocal, SignerInfoSource::GitGlobal]
+    } {
+        if let Ok((_, user_ref, source)) =
+            load_existing_login(&git_repo, &None, &None, &Some(source), None, true, false).await
+        {
+            eprintln!(
+                "logged in {}as {}",
+                if source == SignerInfoSource::GitLocal {
+                    "to local git repository "
+                } else {
+                    ""
+                },
+                user_ref.metadata.name
+            );
+            match Interactor::default().choice(
+                PromptChoiceParms::default()
+                    .with_default(0)
+                    .with_choices(vec![
+                        format!("logout as \"{}\"", user_ref.metadata.name),
+                        "remain logged in".to_string(),
+                    ]),
+            )? {
+                0 => {
+                    for item in [
+                        "nostr.nsec",
+                        "nostr.npub",
+                        "nostr.bunker-uri",
+                        "nostr.bunker-app-key",
+                    ] {
+                        remove_git_config_item(
+                            if source == SignerInfoSource::GitLocal {
+                                &git_repo
+                            } else {
+                                &None
+                            },
+                            item,
+                        )?;
+                    }
+                }
+                _ => return Ok(false),
+            }
+        }
+    }
+    Ok(true)
+}