repo_commit: Fix format_patch handling of root commits

1 files changed, 2 insertions, 27 deletions

diff --git a/handle_repo_commit.go b/handle_repo_commit.go
index 03a7cd4..aeea380 100644
--- a/handle_repo_commit.go
+++ b/handle_repo_commit.go
@@ -1,14 +1,12 @@
 package main
 
 import (
-	"errors"
 	"net/http"
 	"strings"
 
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/filemode"
 	"github.com/go-git/go-git/v5/plumbing/format/diff"
-	"github.com/go-git/go-git/v5/plumbing/object"
 	"go.lindenii.runxiyu.org/lindenii-common/misc"
 )
 
@@ -53,31 +51,8 @@ func handle_repo_commit(w http.ResponseWriter, r *http.Request) {
 	data["commit_object"] = commit_object
 	data["commit_id"] = commit_id_string
 
-	var patch *object.Patch
-	parent_commit_object, err := commit_object.Parent(0)
-	if errors.Is(err, object.ErrParentNotFound) {
-		commit_tree, err := commit_object.Tree()
-		if err != nil {
-			_, _ = w.Write([]byte("Error getting commit tree (for comparing against an empty tree): " + err.Error()))
-			return
-		}
-		patch, err = (&object.Tree{}).Patch(commit_tree)
-		if err != nil {
-			_, _ = w.Write([]byte("Error getting patch of commit: " + err.Error()))
-			return
-		}
-	} else if err != nil {
-		_, _ = w.Write([]byte("Error getting parent commit object: " + err.Error()))
-		return
-	} else {
-		data["parent_commit_hash"] = parent_commit_object.Hash.String()
-
-		patch, err = parent_commit_object.Patch(commit_object)
-		if err != nil {
-			_, _ = w.Write([]byte("Error getting patch of commit: " + err.Error()))
-			return
-		}
-	}
+	parent_commit_hash, patch, err := get_patch_from_commit(commit_object)
+	data["parent_commit_hash"] = parent_commit_hash.String()
 	data["patch"] = patch
 
 	// TODO: Remove unnecessary context