Feat[BE-261] : inisiate expense module

internal/modules/expenses/dto/expense.dto.go

@@ -0,0 +1,66 @@
+package dto
+
+import (
+	"time"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	userDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/users/dto"
+)
+
+// === DTO Structs ===
+
+type ExpenseBaseDTO struct {
+	Id   uint   `json:"id"`
+	Name string `json:"name"`
+}
+
+type ExpenseListDTO struct {
+	Id          uint                 `json:"id"`
+	Name        string               `json:"name"`
+	CreatedUser *userDTO.UserBaseDTO `json:"created_user"`
+	CreatedAt   time.Time            `json:"created_at"`
+	UpdatedAt   time.Time            `json:"updated_at"`
+}
+
+type ExpenseDetailDTO struct {
+	ExpenseListDTO
+}
+
+// === Mapper Functions ===
+
+func ToExpenseBaseDTO(e entity.Expense) ExpenseBaseDTO {
+	return ExpenseBaseDTO{
+		Id:    e.Id,
+		Name:  e.Name,
+	}
+}
+
+func ToExpenseListDTO(e entity.Expense) ExpenseListDTO {
+	var createdUser *userDTO.UserBaseDTO
+	if e.CreatedUser.Id != 0 {
+		mapped := userDTO.ToUserBaseDTO(e.CreatedUser)
+		createdUser = &mapped
+	}
+
+	return ExpenseListDTO{
+		Id:          e.Id,
+		Name:        e.Name,
+		CreatedAt:   e.CreatedAt,
+		UpdatedAt:   e.UpdatedAt,
+		CreatedUser: createdUser,
+	}
+}
+
+func ToExpenseListDTOs(e []entity.Expense) []ExpenseListDTO {
+	result := make([]ExpenseListDTO, len(e))
+	for i, r := range e {
+		result[i] = ToExpenseListDTO(r)
+	}
+	return result
+}
+
+func ToExpenseDetailDTO(e entity.Expense) ExpenseDetailDTO {
+	return ExpenseDetailDTO{
+		ExpenseListDTO: ToExpenseListDTO(e),
+	}
+}