add migration;add api create employee

internal/modules/master/employees/dto/employees.dto.go

@@ -0,0 +1,70 @@
+package dto
+
+import (
+	"time"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	kandangDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/master/kandangs/dto"
+)
+
+// === DTO Structs ===
+
+type EmployeesRelationDTO struct {
+	Id   uint   `json:"id"`
+	Name string `json:"name"`
+}
+
+type EmployeesListDTO struct {
+	Id        uint                            `json:"id"`
+	Name      string                          `json:"name"`
+	IsActive  bool                            `json:"is_active"`
+	Kandangs  []kandangDTO.KandangRelationDTO `json:"kandangs"`
+	CreatedAt time.Time                       `json:"created_at"`
+	UpdatedAt time.Time                       `json:"updated_at"`
+}
+
+type EmployeesDetailDTO struct {
+	EmployeesListDTO
+}
+
+// === Mapper Functions ===
+
+func ToEmployeesRelationDTO(e entity.Employees) EmployeesRelationDTO {
+	return EmployeesRelationDTO{
+		Id:   e.Id,
+		Name: e.Name,
+	}
+}
+
+func ToEmployeesListDTO(e entity.Employees) EmployeesListDTO {
+	kandangs := make([]kandangDTO.KandangRelationDTO, 0, len(e.EmployeeKandangs))
+	for _, rel := range e.EmployeeKandangs {
+		if rel.Kandang.Id == 0 {
+			continue
+		}
+		kandangs = append(kandangs, kandangDTO.ToKandangRelationDTO(rel.Kandang))
+	}
+
+	return EmployeesListDTO{
+		Id:        e.Id,
+		Name:      e.Name,
+		IsActive:  e.IsActive,
+		Kandangs:  kandangs,
+		CreatedAt: e.CreatedAt,
+		UpdatedAt: e.UpdatedAt,
+	}
+}
+
+func ToEmployeesListDTOs(e []entity.Employees) []EmployeesListDTO {
+	result := make([]EmployeesListDTO, len(e))
+	for i, r := range e {
+		result[i] = ToEmployeesListDTO(r)
+	}
+	return result
+}
+
+func ToEmployeesDetailDTO(e entity.Employees) EmployeesDetailDTO {
+	return EmployeesDetailDTO{
+		EmployeesListDTO: ToEmployeesListDTO(e),
+	}
+}