1 files changed, 90 insertions, 0 deletions
diff --git a/src/project/git.rs b/src/project/git.rs
new file mode 100644
index 0000000..f1c4d5a
--- /dev/null
+++ b/src/project/git.rs
@@ -0,0 +1,90 @@
+use crate::{Error, Project};
+use git2::{BranchType, Repository};
+use ignore::DirEntry;
+use std::{cmp::Ordering, path::PathBuf, time::Duration};
+
+#[derive(Debug, Clone)]
+pub struct GitProject {
+    path_buf: PathBuf,
+    latest_commit: Option<Duration>,
+}
+
+impl GitProject {
+    fn new(path_buf: PathBuf) -> Result<Self, Error> {
+        let repository = Repository::open(&path_buf)?;
+        let latest_commit = Self::latest_commit(&repository);
+        Ok(Self {
+            path_buf,
+            latest_commit,
+        })
+    }
+
+    fn latest_commit(repository: &Repository) -> Option<Duration> {
+        let mut branches = repository.branches(Some(BranchType::Local)).ok()?;
+        branches
+            .try_fold(0, |latest, branch| {
+                let branch = branch?.0;
+
+                let name = branch
+                    .name()?
+                    .ok_or_else(|| git2::Error::from_str("Failed to find branch"))?;
+
+                repository
+                    .revparse_single(name)?
+                    .peel_to_commit()
+                    .map(|c| (c.time().seconds() as u64).max(latest))
+            })
+            .map(Duration::from_secs)
+            .ok()
+    }
+}
+
+impl Project for GitProject {
+    fn timestamp(&self) -> Option<Duration> {
+        self.latest_commit
+    }
+
+    fn to_path_buf(&self) -> PathBuf {
+        self.path_buf.to_owned()
+    }
+}
+
+impl PartialEq for GitProject {
+    fn eq(&self, other: &Self) -> bool {
+        match (self.latest_commit, other.latest_commit) {
+            (Some(time), Some(other_time)) => time.eq(&other_time),
+            _ => false,
+        }
+    }
+}
+
+impl PartialOrd for GitProject {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        match (self.latest_commit, other.latest_commit) {
+            (Some(time), Some(other_time)) => time.partial_cmp(&other_time),
+            _ => None,
+        }
+    }
+}
+
+impl TryFrom<PathBuf> for GitProject {
+    type Error = Error;
+
+    fn try_from(value: PathBuf) -> Result<Self, Self::Error> {
+        Self::new(value)
+    }
+}
+
+impl TryFrom<DirEntry> for GitProject {
+    type Error = Error;
+
+    fn try_from(value: DirEntry) -> Result<Self, Self::Error> {
+        Self::new(value.into_path())
+    }
+}
+
+impl From<GitProject> for PathBuf {
+    fn from(value: GitProject) -> Self {
+        value.path_buf
+    }
+}