From e035b808881ef1bd858376ae65ec73e50cbf14b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gon=C3=A7alo=20Val=C3=A9rio?= <gon@ovalerio.net>
Date: Wed, 4 Nov 2020 21:33:11 +0000
Subject: [PATCH] step twenty two: tag, create the tag ref

---
 src/base.rs | 2 +-
 src/data.rs | 9 ++++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/base.rs b/src/base.rs
index 5bbf018..b4aac35 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -116,7 +116,7 @@ pub fn checkout(oid: String) {
 }
 
 pub fn create_tag(name: String, oid: String) {
-    println!("{} - {}", name, oid);
+    data::update_ref(format!("refs/tags/{}", name), oid);
 }
 
 fn is_ignored(path: &String) -> bool {
diff --git a/src/data.rs b/src/data.rs
index a2aba4e..52d8cf2 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -1,5 +1,6 @@
 use sha1::{Digest, Sha1};
 use std::fs;
+use std::path::Path;
 use std::str;
 
 static RGIT_DIR: &'static str = ".rgit";
@@ -43,7 +44,13 @@ pub fn get_object(hash: String, expected: String) -> String {
 }
 
 pub fn update_ref(reference: String, oid: String) {
-    fs::write(format!("{}/{}", RGIT_DIR, reference), oid).expect("Failed to updated HEAD");
+    let path = format!("{}/{}", RGIT_DIR, reference);
+    let mut parents = Path::new(&path).ancestors();
+    parents.next();
+
+    let parent = parents.next().unwrap().to_str().unwrap();
+    fs::create_dir_all(parent).expect("Cannot create required dirs");
+    fs::write(path, oid).expect("Failed to updated HEAD");
 }
 
 pub fn get_ref(reference: String) -> Result<String, Box<dyn std::error::Error + 'static>> {