Refactor

s3/client.go

@@ -196,7 +196,15 @@ func (c *Client) ListObjects(ctx context.Context, continuationToken string, maxK
 	}
 	objects := make([]Object, len(result.Contents))
 	for i, obj := range result.Contents {
-		objects[i] = Object(obj)
+		var lastModified time.Time
+		if obj.LastModified != "" {
+			lastModified, _ = time.Parse(time.RFC3339, obj.LastModified)
+		}
+		objects[i] = Object{
+			Key:          obj.Key,
+			Size:         obj.Size,
+			LastModified: lastModified,
+		}
 	}
 	return &ListResult{
 		Objects:               objects,

s3/client_test.go

@@ -13,6 +13,7 @@ import (
 	"strings"
 	"sync"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 )
@@ -243,7 +244,7 @@ func (m *mockS3Server) handleList(w http.ResponseWriter, r *http.Request, bucket
 	var contents []listObject
 	for _, objKey := range allKeys {
 		body := m.objects[bucketPath+"/"+objKey]
-		contents = append(contents, listObject{Key: objKey, Size: int64(len(body))})
+		contents = append(contents, listObject{Key: objKey, Size: int64(len(body)), LastModified: time.Now().Format(time.RFC3339)})
 	}
 	m.mu.RUnlock()
 

s3/types.go

@@ -1,6 +1,9 @@
 package s3
 
-import "fmt"
+import (
+	"fmt"
+	"time"
+)
 
 // Config holds the parsed fields from an S3 URL. Use ParseURL to create one from a URL string.
 type Config struct {
@@ -15,8 +18,9 @@ type Config struct {
 
 // Object represents an S3 object returned by list operations.
 type Object struct {
-	Key  string
-	Size int64
+	Key          string
+	Size         int64
+	LastModified time.Time
 }
 
 // ListResult holds the response from a ListObjectsV2 call.
@@ -49,8 +53,9 @@ type listObjectsV2Response struct {
 }
 
 type listObject struct {
-	Key  string `xml:"Key"`
-	Size int64  `xml:"Size"`
+	Key          string `xml:"Key"`
+	Size         int64  `xml:"Size"`
+	LastModified string `xml:"LastModified"`
 }
 
 // deleteResult is the XML response from S3 DeleteObjects