From 17c20d77600407209908de5541415f2c4a85f5e3 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sat, 7 Aug 2021 19:16:01 +0200
Subject: Implemented tree entry commit history

---
 packages/server/src/git/tree_entry.ts | 24 +++++++++++++++++++++---
 test/unit/tree_entry.unit.test.ts     | 28 ++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/packages/server/src/git/tree_entry.ts b/packages/server/src/git/tree_entry.ts
index 22de716..182543e 100644
--- a/packages/server/src/git/tree_entry.ts
+++ b/packages/server/src/git/tree_entry.ts
@@ -1,11 +1,8 @@
 import { Commit } from "./commit";
 import { Revwalk as NodeGitRevwalk, TreeEntry as NodeGitTreeEntry } from "nodegit";
 import { Repository } from "./repository";
-import { dirname } from "path";
-import { findAsync } from "./misc";
 import { Tree } from "./tree";
 import { Blob } from "./blob";
-import { createError, TreeError } from "./error";
 
 /**
  * The core structure of a tree entry
@@ -43,6 +40,27 @@ export abstract class BaseTreeEntry {
 
 		return new Commit(this._owner, file_hist[0].commit);
 	}
+
+	/**
+	 * Returns the tree entry's commit history
+	 *
+	 * @returns An array of commit instances
+	 */
+	public async history(count?: number): Promise<Commit[]> {
+		const rev_walk = NodeGitRevwalk.create(this._owner.ng_repository);
+		rev_walk.pushRef(`refs/heads/${this._owner.branch_name}`);
+
+		const commit_cnt = (await rev_walk.getCommitsUntil(() => true)).length;
+
+		rev_walk.pushRef(`refs/heads/${this._owner.branch_name}`);
+		const file_hist = await rev_walk.fileHistoryWalk(this.path, commit_cnt);
+
+		const commit_history = file_hist.map(hist_entry => new Commit(this._owner, hist_entry.commit));
+
+		return count
+			? commit_history.slice(0, count)
+			: commit_history;
+	}
 }
 
 /**
diff --git a/test/unit/tree_entry.unit.test.ts b/test/unit/tree_entry.unit.test.ts
index 570ba0f..de270c5 100644
--- a/test/unit/tree_entry.unit.test.ts
+++ b/test/unit/tree_entry.unit.test.ts
@@ -26,6 +26,34 @@ describe("Tree entry", () => {
 				expect(latest_commit).toBeDefined();
 				expect(latest_commit).toBeInstanceOf(Commit);
 			});
+
+			it("Should get whole commit history", async() => {
+				expect.hasAssertions();
+
+				const history = await tree_entry.history();
+
+				expect(history).toBeDefined();
+				expect(history.length).toBeGreaterThanOrEqual(1);
+
+				for(const hist_entry of history) {
+					expect(hist_entry).toBeDefined();
+					expect(hist_entry).toBeInstanceOf(Commit);
+				}
+			});
+
+			it("Should get 5 entries of the commit history", async() => {
+				expect.hasAssertions();
+
+				const history = await tree_entry.history(5);
+
+				expect(history).toBeDefined();
+				expect(history).toHaveLength(5);
+
+				for(const hist_entry of history) {
+					expect(hist_entry).toBeDefined();
+					expect(hist_entry).toBeInstanceOf(Commit);
+				}
+			});
 		});
 
 	});
-- 
cgit v1.2.3-18-g5258