refactor: pass sha hex string instead of Oid as argument

lib/src/repository.dart

@@ -350,14 +350,17 @@ class Repository {
     }
   }
 
-  /// Returns the list of commits starting from provided [oid].
+  /// Returns the list of commits starting from provided [sha] hex string.
   ///
   /// If [sorting] isn't provided default will be used (reverse chronological order, like in git).
-  List<Commit> log(Oid oid, [List<GitSort>? sorting]) {
+  List<Commit> log(String sha, [List<GitSort>? sorting]) {
+    final oid = Oid.fromSHA(this, sha);
     final walker = RevWalk(this);
+
     walker.sorting(sorting ?? [GitSort.none]);
     walker.push(oid);
     final result = walker.walk();
+
     walker.free();
 
     return result;
@@ -397,11 +400,13 @@ class Repository {
   /// Finds a merge base between two commits.
   ///
   /// Throws a [LibGit2Error] if error occured.
-  Oid mergeBase(Oid one, Oid two) {
+  Oid mergeBase(String one, String two) {
+    final oidOne = Oid.fromSHA(this, one);
+    final oidTwo = Oid.fromSHA(this, two);
     return Oid(merge_bindings.mergeBase(
       _repoPointer,
-      one.pointer,
-      two.pointer,
+      oidOne.pointer,
+      oidTwo.pointer,
     ));
   }
 
@@ -436,7 +441,7 @@ class Repository {
   /// Throws a [LibGit2Error] if error occured.
   Oid createTag({
     required String tagName,
-    required Oid target,
+    required String target,
     required GitObject targetType,
     required Signature tagger,
     required String message,

lib/src/tag.dart

@@ -48,15 +48,16 @@ class Tag {
   static Oid create({
     required Repository repository,
     required String tagName,
-    required Oid target,
+    required String target,
     required GitObject targetType,
     required Signature tagger,
     required String message,
     bool force = false,
   }) {
+    final targetOid = Oid.fromSHA(repository, target);
     final object = object_bindings.lookup(
       repository.pointer,
-      target.pointer,
+      targetOid.pointer,
       targetType.value,
     );
     final result = bindings.create(

test/repository_test.dart

@@ -188,8 +188,7 @@ void main() {
           '6cbc22e509d72758ab4c8d9f287ea846b90c448b',
           'f17d0d48eae3aa08cecf29128a35e310c97b3521',
         ];
-        final start = Oid.fromSHA(repo, lastCommit);
-        final commits = repo.log(start);
+        final commits = repo.log(lastCommit);
 
         for (var i = 0; i < commits.length; i++) {
           expect(commits[i].id.sha, log[i]);
@@ -305,15 +304,14 @@ void main() {
         });
       });
 
-      test('successfully creates tag with provided Oid', () {
+      test('successfully creates tag with provided sha', () {
         final signature = Signature.create(
           name: 'Author',
           email: 'author@email.com',
           time: 1234,
         );
         const tagName = 'tag';
-        final target =
-            Oid.fromSHA(repo, 'f17d0d48eae3aa08cecf29128a35e310c97b3521');
+        const target = 'f17d0d48eae3aa08cecf29128a35e310c97b3521';
         const message = 'init tag\n';
 
         final oid = Tag.create(
@@ -333,7 +331,7 @@ void main() {
         expect(newTag.name, tagName);
         expect(newTag.message, message);
         expect(tagger, signature);
-        expect(newTagTarget.id, target);
+        expect(newTagTarget.id.sha, target);
 
         newTag.free();
         newTagTarget.free();

test/revparse_test.dart

@@ -99,7 +99,10 @@ void main() {
       expect(revspec.from.id.sha, headSHA);
       expect(revspec.to?.id.sha, '5aecfa0fb97eadaac050ccb99f03c3fb65460ad4');
       expect(revspec.flags, GitRevParse.mergeBase);
-      expect(repo.mergeBase(revspec.from.id, revspec.to!.id), isA<Oid>());
+      expect(
+        repo.mergeBase(revspec.from.id.sha, revspec.to!.id.sha),
+        isA<Oid>(),
+      );
 
       revspec.from.free();
       revspec.to?.free();

test/tag_test.dart

@@ -29,7 +29,7 @@ void main() {
   });
 
   group('Tag', () {
-    test('successfully initializes tag from provided Oid', () {
+    test('successfully initializes tag from provided sha', () {
       expect(tag, isA<Tag>());
     });
 
@@ -60,8 +60,7 @@ void main() {
         time: 1234,
       );
       const tagName = 'tag';
-      final target =
-          Oid.fromSHA(repo, 'f17d0d48eae3aa08cecf29128a35e310c97b3521');
+      final target = 'f17d0d48eae3aa08cecf29128a35e310c97b3521';
       const message = 'init tag\n';
 
       final oid = Tag.create(
@@ -81,7 +80,7 @@ void main() {
       expect(newTag.name, tagName);
       expect(newTag.message, message);
       expect(tagger, signature);
-      expect(newTagTarget.id, target);
+      expect(newTagTarget.id.sha, target);
 
       newTag.free();
       newTagTarget.free();