feat(login): overhaul login experience

* simplify login menu, making it more accessable to newcomers and
  easier to select remote signer options
* enable `ngit login` to work from anywhere (not just a git repo)
* assume fresh login details saved to global git config but fallback
  to local repository
* maintain local repository login via `ngit login --local`
* maintain login via CLI arguments eg `ngit send --nsec nsec123`
* nudge users to remember nsec when pasting in ncryptsec for a
  better UX, whilst maintaining the option to be prompted for
  password everytime
* create placeholder menu items for help menu and create account

1 files changed, 38 insertions, 0 deletions

diff --git a/src/lib/git/mod.rs b/src/lib/git/mod.rs
index 5d14ce3..45ac58c 100644
--- a/src/lib/git/mod.rs
+++ b/src/lib/git/mod.rs
@@ -860,6 +860,44 @@ fn extract_sig_from_patch_tags<'a>(tags: &'a Tags, tag_name: &str) -> Result<git
     .context("failed to create git signature")
 }
 
+pub fn get_git_config_item(git_repo: &Option<&Repo>, item: &str) -> Result<Option<String>> {
+    if let Some(git_repo) = git_repo {
+        git_repo.get_git_config_item(item, Some(false))
+    } else {
+        Ok(
+            match git2::Config::open_default()?.open_global()?.get_entry(item) {
+                Ok(item) => item.value().map(|v| v.to_string()),
+                Err(_) => None,
+            },
+        )
+    }
+}
+
+pub fn save_git_config_item(git_repo: &Option<&Repo>, item: &str, value: &str) -> Result<()> {
+    if let Some(git_repo) = git_repo {
+        git_repo.save_git_config_item(item, value, false)
+    } else {
+        git2::Config::open_default()?
+            .open_global()?
+            .set_str(item, value)
+            .context(format!("cannot set global git config item {}", item))
+    }
+}
+
+pub fn remove_git_config_item(git_repo: &Option<&Repo>, item: &str) -> Result<bool> {
+    if let Some(git_repo) = git_repo {
+        git_repo.remove_git_config_item(item, false)
+    } else if get_git_config_item(&None, item)?.is_none() {
+        Ok(false)
+    } else {
+        git2::Config::open_default()?
+            .open_global()?
+            .remove(item)
+            .context(format!("cannot remove existing git config item {}", item))?;
+        Ok(true)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use std::fs;