No commit message

Source/Fn/Summary.rs

@@ -11,10 +11,12 @@
 /// # Example
 ///
 /// ```
-/// let option = Option {
+/// let Option = Option {
 ///     // Fields needed for summary generation
 /// };
-/// let summary = Fn(&option);
+///
+/// let summary = Fn(&Option);
+///
 /// ```
 pub async fn Fn(
 	Entry: &str,
@@ -26,17 +28,63 @@ pub async fn Fn(
 
 			let Tag: Vec<_> = Name.iter().filter_map(|Tag| Tag).collect();
 
-			for (Index, &Current) in Tag.iter().enumerate() {
-				for (_, &Next) in Tag.iter().enumerate().skip(Index + 1) {
+			let Count = Tag.len();
+
+			let Head = Repository.head()?;
+
+			let First = Repository.find_commit(First::Fn(&Repository)?)?.id().to_string();
+
+			let Last = Head.peel_to_commit()?.id().to_string();
+
+			match Count {
+				0 => {
+					println!("Summary from {} to {}:", First, Last);
+
+					println!(
+						"{}",
+						crate::Fn::Summary::Difference::Fn(&Repository, &First, &Last, Option,)?
+					);
+				}
+				1 => {
+					let Latest = Tag.get(0).unwrap();
+
+					println!("Summary from {} to {}:", First, Latest);
+
+					println!(
+						"{}",
+						crate::Fn::Summary::Difference::Fn(&Repository, &First, Latest, Option,)?
+					);
+
+					println!("Summary from {} to {}:", Latest, Last);
+
 					println!(
 						"{}",
-						crate::Fn::Summary::Difference::Fn(&Repository, Current, Next, Option)?
+						crate::Fn::Summary::Difference::Fn(&Repository, Latest, &Last, Option,)?
+					);
+				}
+				_ => {
+					let Latest = Tag.get(Count - 1).unwrap();
+					let Previous = Tag.get(Count - 2).unwrap();
+
+					println!("Summary from {} to {}:", Previous, Latest);
+
+					println!(
+						"{}",
+						crate::Fn::Summary::Difference::Fn(&Repository, Previous, Latest, Option,)?
+					);
+
+					println!("Summary from {} to {}:", Previous, Last);
+
+					println!(
+						"{}",
+						crate::Fn::Summary::Difference::Fn(&Repository, Previous, &Last, Option,)?
 					);
 				}
 			}
 		}
 		Err(_Error) => {
 			println!("Failed to open repository: {}", _Error);
+
 			return Err(_Error.into());
 		}
 	}
@@ -47,3 +95,4 @@ pub async fn Fn(
 use git2::Repository;
 
 pub mod Difference;
+pub mod First;

Source/Fn/Summary/First.rs

@@ -0,0 +1,20 @@
+/// Function to iterate over the commits in a repository in reverse topological order.
+///
+/// # Arguments
+/// * `Repository` - A reference to the repository to iterate over.
+///
+/// # Returns
+/// * Result containing the next commit in the iteration or an error if no commits are found.
+pub fn Fn(Repository: &Repository) -> Result<Oid, git2::Error> {
+	let mut Walk = Repository.revwalk()?;
+	Walk.push_head()?;
+	Walk.set_sorting(Sort::TOPOLOGICAL | Sort::REVERSE)?;
+
+	match Walk.next() {
+		Some(Ok(Identifier)) => Ok(Identifier),
+		Some(Err(_Error)) => Err(_Error),
+		None => Err(git2::Error::from_str("Cannot git2.")),
+	}
+}
+
+use git2::{Oid, Repository, Sort};