Initial blog setup

src/git_tracker.rs

@@ -0,0 +1,61 @@
+use std::fs;
+use std::path::PathBuf;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct GitVersion {
+    pub branch: String,
+    pub commit: String,
+}
+
+pub fn get_git_version(git_path: &PathBuf) -> Result<GitVersion, String> {
+    let head_path = git_path.join(".git/HEAD");
+
+    // Read HEAD file
+    let head_content = fs::read_to_string(&head_path)
+        .map_err(|e| format!("Failed to read .git/HEAD: {}", e))?;
+
+    let head_content = head_content.trim();
+
+    // Check if HEAD points to a ref
+    if head_content.starts_with("ref:") {
+        let ref_path = head_content.strip_prefix("ref:").unwrap().trim();
+        let full_ref_path = git_path.join(".git").join(ref_path);
+
+        // Read the ref file to get the commit hash
+        let commit_hash = fs::read_to_string(&full_ref_path)
+            .map_err(|e| format!("Failed to read ref file: {}", e))?
+            .trim()
+            .to_string();
+
+        // Extract branch name from ref path
+        let branch = ref_path
+            .strip_prefix("refs/heads/")
+            .unwrap_or(ref_path)
+            .to_string();
+
+        Ok(GitVersion {
+            branch,
+            commit: commit_hash,
+        })
+    } else {
+        // Detached HEAD state - just use the commit hash
+        Ok(GitVersion {
+            branch: "detached".to_string(),
+            commit: head_content.to_string(),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_git_version() {
+        // This test will only work if run in a git repository
+        if let Ok(version) = get_git_version(".") {
+            assert!(!version.commit.is_empty());
+            assert!(!version.branch.is_empty());
+        }
+    }
+}