migrate from github

internal/repository/document_repo/mget_by_ids.go

@@ -0,0 +1,29 @@
+package document_repo
+
+import (
+	"github.com/XingfenD/yoresee_doc/internal/model"
+)
+
+func (r *DocumentRepository) MGetByIDs(ids []int64) ([]*model.Document, error) {
+	if len(ids) == 0 {
+		return []*model.Document{}, nil
+	}
+
+	var docs []*model.Document
+	if err := r.db.Model(&model.Document{}).Where("id IN ?", ids).Find(&docs).Error; err != nil {
+		return nil, err
+	}
+
+	docMap := make(map[int64]*model.Document, len(docs))
+	for _, doc := range docs {
+		docMap[doc.ID] = doc
+	}
+
+	ordered := make([]*model.Document, 0, len(ids))
+	for _, id := range ids {
+		if doc, ok := docMap[id]; ok {
+			ordered = append(ordered, doc)
+		}
+	}
+	return ordered, nil
+}