From da2967c7366ade69f330e897ce763151c6e57301 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gon=C3=A7alo=20Val=C3=A9rio?= <gon@ovalerio.net>
Date: Sat, 7 Nov 2020 23:01:19 +0000
Subject: [PATCH] step thirty one: implement symbolic refs idea

---
 src/data.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/data.rs b/src/data.rs
index f6d2708..85f8141 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -55,8 +55,14 @@ pub fn update_ref(reference: String, oid: String) {
 }
 
 pub fn get_ref(reference: String) -> Result<String, Box<dyn std::error::Error + 'static>> {
-    let oid = fs::read_to_string(format!("{}/{}", RGIT_DIR, reference))?;
-    return Ok(oid);
+    let ref_path = format!("{}/{}", RGIT_DIR, reference);
+    let value = fs::read_to_string(ref_path)?;
+
+    if !value.is_empty() && value.starts_with("ref:") {
+        let new_ref: Vec<&str> = value.splitn(2, ":").collect();
+        return get_ref(new_ref[1].to_owned());
+    }
+    return Ok(value);
 }
 
 pub fn iter_refs() -> Vec<(String, String)> {