pre-dev: initial commit

internal/domain/base-entities/core/entity.go

@@ -0,0 +1,31 @@
+package core
+
+import "gorm.io/gorm"
+
+type Base struct {
+	CreatedAt string         `json:"createdAt"`
+	UpdatedAt string         `json:"updatedAt"`
+	DeteledAt gorm.DeletedAt `json:"deletedAt,omitempty"`
+}
+
+//
+type Main struct {
+	Id uint `json:"id" gorm:"primaryKey"` // depends on the system architecture
+	Base
+}
+
+type TinyMain struct {
+	Id uint8 `json:"id" gorm:"primaryKey"`
+	Base
+}
+
+type SmallMain struct {
+	Id uint16 `json:"id" gorm:"primaryKey"`
+	Base
+}
+
+// Mainly for transaction
+type BigMain struct {
+	Id uint64 `json:"id" gorm:"primaryKey"`
+	Base
+}