1 files changed, 22 insertions, 12 deletions

diff --git a/src/project/git.rs b/src/project/git.rs
index f1c4d5a..00cd000 100644
--- a/src/project/git.rs
+++ b/src/project/git.rs
@@ -1,8 +1,11 @@
-use crate::{Error, Project};
 use git2::{BranchType, Repository};
 use ignore::DirEntry;
 use std::{cmp::Ordering, path::PathBuf, time::Duration};
 
+use crate::project::Error;
+use crate::project::Timestamp;
+use crate::Project;
+
 #[derive(Debug, Clone)]
 pub struct GitProject {
     path_buf: PathBuf,
@@ -11,19 +14,19 @@ pub struct GitProject {
 
 impl GitProject {
     fn new(path_buf: PathBuf) -> Result<Self, Error> {
-        let repository = Repository::open(&path_buf)?;
-        let latest_commit = Self::latest_commit(&repository);
+        let latest_commit = Self::latest_commit(&path_buf).ok();
         Ok(Self {
             path_buf,
             latest_commit,
         })
     }
 
-    fn latest_commit(repository: &Repository) -> Option<Duration> {
-        let mut branches = repository.branches(Some(BranchType::Local)).ok()?;
+    fn latest_commit(path_buf: &PathBuf) -> Result<Duration, Error> {
+        let repository = Repository::open(path_buf)?;
+        let mut branches = repository.branches(Some(BranchType::Local))?;
         branches
             .try_fold(0, |latest, branch| {
-                let branch = branch?.0;
+                let (branch, _) = branch?;
 
                 let name = branch
                     .name()?
@@ -35,17 +38,24 @@ impl GitProject {
                     .map(|c| (c.time().seconds() as u64).max(latest))
             })
             .map(Duration::from_secs)
-            .ok()
+            .map_err(Into::into)
     }
 }
 
-impl Project for GitProject {
-    fn timestamp(&self) -> Option<Duration> {
-        self.latest_commit
+impl Timestamp for GitProject {
+    type Error = Error;
+
+    fn timestamp(&self) -> Result<Duration, Self::Error> {
+        match self.latest_commit {
+            Some(t) => Ok(t),
+            None => Self::latest_commit(&self.path_buf),
+        }
     }
+}
 
-    fn to_path_buf(&self) -> PathBuf {
-        self.path_buf.to_owned()
+impl Project for GitProject {
+    fn to_path_buf(&self) -> &PathBuf {
+        &self.path_buf
     }
 }