优化

internal/data/pagination.go

@@ -2,15 +2,29 @@ package data
 
 import "gorm.io/gorm"
 
-func applyPagination(db *gorm.DB, page, size, maxSize int) *gorm.DB {
-	if size <= 0 {
-		return db
-	}
+func paginationLimitOffset(page, size, maxSize int) (limit, offset int) {
+	limit = size
 	if maxSize > 0 && size > maxSize {
-		size = maxSize
+		limit = maxSize
+	}
+	if limit <= 0 {
+		return 0, 0
 	}
 	if page <= 0 {
 		page = 1
 	}
-	return db.Offset((page - 1) * size).Limit(size)
+	return limit, (page - 1) * limit
+}
+
+func applyPagination(db *gorm.DB, page, size, maxSize int) *gorm.DB {
+	limit, offset := paginationLimitOffset(page, size, maxSize)
+	if limit == 0 {
+		return db
+	}
+	return db.Offset(offset).Limit(limit)
+}
+
+func applyRequiredPagination(db *gorm.DB, page, size, maxSize int) *gorm.DB {
+	limit, offset := paginationLimitOffset(page, size, maxSize)
+	return db.Offset(offset).Limit(limit)
 }