From ff2a4b09646a8a5949808bfadf31747751831963 Mon Sep 17 00:00:00 2001
From: Justin Wernick <justin@worthe-it.co.za>
Date: Wed, 29 Mar 2023 14:16:06 +0200
Subject: Function to get the current user's groups

---
 tests/cli.rs         | 34 ++++++++++++++++++++++++++++++++--
 user-info/src/lib.rs | 19 ++++++++++++++++++-
 2 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/tests/cli.rs b/tests/cli.rs
index 1daa850..872c2ce 100644
--- a/tests/cli.rs
+++ b/tests/cli.rs
@@ -2,7 +2,7 @@ use anyhow::Result;
 use assert_cmd::{cargo::cargo_bin, Command};
 use rexpect::session::{spawn_command, PtySession};
 use tempfile::TempDir;
-use user_info::get_username;
+use user_info::{get_user_groups, get_username};
 
 struct TestContext {
     p: PtySession,
@@ -107,7 +107,7 @@ fn can_init_a_new_git_repo() -> Result<()> {
                 .as_ref()
                 .join("git")
                 .join(username)
-                .join("my-new-repo.git"),
+                .join(&format!("{}.git", repo_name)),
         )
         .assert()
         .success()
@@ -115,6 +115,36 @@ fn can_init_a_new_git_repo() -> Result<()> {
     Ok(())
 }
 
+#[test]
+#[ignore]
+fn can_init_a_new_shared_git_repo() -> Result<()> {
+    let mut c = spawn_interactive_process()?;
+    let group = get_user_groups().pop().unwrap();
+    let repo_name = "my-new-shared-repo";
+    c.p.send_line(&format!("git-init --shared {} {}", group, repo_name))?;
+    c.p.exp_string(&format!(
+        "Successfully created \"git/{}/{}.git\"",
+        group, repo_name
+    ))?;
+    expect_prompt(&mut c.p)?;
+
+    Command::new("git")
+        .arg("rev-list")
+        .arg("--all")
+        .current_dir(
+            c.workdir
+                .as_ref()
+                .join("git")
+                .join(&group)
+                .join(&format!("{}.git", repo_name)),
+        )
+        .assert()
+        .success()
+        .stdout("");
+    // TODO: Check file permissions? Shared set in git config?
+    Ok(())
+}
+
 #[test]
 fn runs_a_single_command_and_exit_with_cli_flag() -> Result<()> {
     let username = get_username().unwrap();
diff --git a/user-info/src/lib.rs b/user-info/src/lib.rs
index bd5ff42..7a42db9 100644
--- a/user-info/src/lib.rs
+++ b/user-info/src/lib.rs
@@ -1,10 +1,18 @@
-use nix::unistd::{getuid, User};
+use nix::unistd::{getgroups, getuid, Group, User};
 
 pub fn get_username() -> Option<String> {
     let uid = getuid();
     User::from_uid(uid).ok().flatten().map(|user| user.name)
 }
 
+pub fn get_user_groups() -> Vec<String> {
+    let gids = getgroups().unwrap_or(Vec::default());
+    gids.into_iter()
+        .filter_map(|gid| Group::from_gid(gid).ok().flatten())
+        .map(|group| group.name)
+        .collect()
+}
+
 #[cfg(test)]
 mod test {
     use super::*;
@@ -17,4 +25,13 @@ mod test {
         let username_len = username.unwrap().trim().len();
         assert!(username_len > 0);
     }
+
+    #[test]
+    fn it_returns_some_groups() {
+        let groups = get_user_groups();
+        assert!(groups.len() > 0);
+        for group in groups {
+            assert!(group.trim().len() > 0);
+        }
+    }
 }
-- 
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