feat: Add log paginationHEADv0.0.19master

Now it is possible to navigate through all commit from a given repository.
It implements a simple navigation which will plenty for now.

1 files changed, 25 insertions, 12 deletions

diff --git a/pkg/git/git.go b/pkg/git/git.go
index 6221e33..b33afa7 100644
--- a/pkg/git/git.go
+++ b/pkg/git/git.go
@@ -16,8 +16,6 @@ import (
 	"github.com/go-git/go-git/v5/plumbing/object"
 )
 
-var ()
-
 var (
 	MissingRefErr  = errors.New("Reference not found")
 	TreeForFileErr = errors.New("Trying to get tree of a file")
@@ -96,30 +94,46 @@ func (g *GitRepository) LastCommit() (*object.Commit, error) {
 	return c, nil
 }
 
-func (g *GitRepository) Commits(count int) ([]*object.Commit, error) {
+func (g *GitRepository) Commits(count int, from string) ([]*object.Commit, *object.Commit, error) {
 	err := g.validateRef()
 	if err != nil {
-		return nil, err
+		return nil, nil, err
+	}
+
+	opts := &git.LogOptions{Order: git.LogOrderCommitterTime}
+
+	if from != "" {
+		hash, err := g.repository.ResolveRevision(plumbing.Revision(from))
+		if err != nil {
+			return nil, nil, errors.Join(MissingRefErr, err)
+		}
+		opts.From = *hash
 	}
 
-	ci, err := g.repository.Log(&git.LogOptions{From: g.ref})
+	ci, err := g.repository.Log(opts)
 	if err != nil {
-		return nil, fmt.Errorf("commits from ref: %w", err)
+		return nil, nil, fmt.Errorf("commits from ref: %w", err)
 	}
 
 	commits := []*object.Commit{}
-	// TODO: for now only load first 1000
-	for x := 0; x < count; x++ {
+	var next *object.Commit
+
+	// iterate one more item so we can fetch the next commit
+	for x := 0; x < (count + 1); x++ {
 		c, err := ci.Next()
 		if err != nil && errors.Is(err, io.EOF) {
 			break
 		} else if err != nil {
-			return nil, err
+			return nil, nil, err
+		}
+		if x == count {
+			next = c
+		} else {
+			commits = append(commits, c)
 		}
-		commits = append(commits, c)
 	}
 
-	return commits, nil
+	return commits, next, nil
 }
 
 func (g *GitRepository) Head() (*plumbing.Reference, error) {
@@ -438,7 +452,6 @@ func (t *TagReference) Message() string {
 		return t.tag.Message
 	}
 	return ""
-
 }
 
 func (self *tagList) Len() int {