Feat[BE-261,265]: createing BOP and BOP realization(Unfinished)

internal/modules/expenses/controllers/expense.controller.go

@@ -1,8 +1,11 @@
 package controller
 
 import (
+	"encoding/json"
+	"fmt"
 	"math"
 	"strconv"
+	"strings"
 
 	"gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/dto"
 	service "gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/services"
@@ -29,7 +32,7 @@ func (u *ExpenseController) GetAll(c *fiber.Ctx) error {
 		Search: c.Query("search", ""),
 	}
 
-		if query.Page < 1 || query.Limit < 1 {
+	if query.Page < 1 || query.Limit < 1 {
 		return fiber.NewError(fiber.StatusBadRequest, "page and limit must be greater than 0")
 	}
 
@@ -49,7 +52,7 @@ func (u *ExpenseController) GetAll(c *fiber.Ctx) error {
 				TotalPages:   int64(math.Ceil(float64(totalResults) / float64(query.Limit))),
 				TotalResults: totalResults,
 			},
-			Data: dto.ToExpenseListDTOs(result),
+			Data: result,
 		})
 }
 
@@ -71,15 +74,39 @@ func (u *ExpenseController) GetOne(c *fiber.Ctx) error {
 			Code:    fiber.StatusOK,
 			Status:  "success",
 			Message: "Get expense successfully",
-			Data:    dto.ToExpenseListDTO(*result),
+			Data:    result,
 		})
 }
 
 func (u *ExpenseController) CreateOne(c *fiber.Ctx) error {
 	req := new(validation.Create)
 
-	if err := c.BodyParser(req); err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
+	req.TransactionDate = c.FormValue("transaction_date")
+
+	supplierID, err := strconv.ParseUint(c.FormValue("supplier_id"), 10, 64)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid supplier_id format")
+	}
+	req.SupplierID = supplierID
+
+	form, err := c.MultipartForm()
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid multipart form")
+	}
+	req.Documents = form.File["documents"]
+
+	costPerKandangJSON := c.FormValue("cost_per_kandangs")
+	if costPerKandangJSON != "" {
+
+		if err := json.Unmarshal([]byte(costPerKandangJSON), &req.CostPerKandangs); err != nil {
+
+			var singleCostPerKandang validation.CostPerKandang
+			if err := json.Unmarshal([]byte(costPerKandangJSON), &singleCostPerKandang); err != nil {
+				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Invalid cost_per_kandang JSON: %v", err))
+			}
+
+			req.CostPerKandangs = []validation.CostPerKandang{singleCostPerKandang}
+		}
 	}
 
 	result, err := u.ExpenseService.CreateOne(c, req)
@@ -92,7 +119,7 @@ func (u *ExpenseController) CreateOne(c *fiber.Ctx) error {
 			Code:    fiber.StatusCreated,
 			Status:  "success",
 			Message: "Create expense successfully",
-			Data:    dto.ToExpenseListDTO(*result),
+			Data:    result,
 		})
 }
 
@@ -119,7 +146,7 @@ func (u *ExpenseController) UpdateOne(c *fiber.Ctx) error {
 			Code:    fiber.StatusOK,
 			Status:  "success",
 			Message: "Update expense successfully",
-			Data:    dto.ToExpenseListDTO(*result),
+			Data:    result,
 		})
 }
 
@@ -142,3 +169,126 @@ func (u *ExpenseController) DeleteOne(c *fiber.Ctx) error {
 			Message: "Delete expense successfully",
 		})
 }
+
+func (u *ExpenseController) ApproveExpense(c *fiber.Ctx) error {
+	expenseID := c.Params("id")
+	id, err := strconv.Atoi(expenseID)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid expense ID")
+	}
+
+	// Extract step from URL path (manager or finance)
+	path := c.Path()
+	var step string
+	if strings.Contains(path, "/approvals/manager") {
+		step = "Manager"
+	} else if strings.Contains(path, "/approvals/finance") {
+		step = "Finance"
+	} else {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid approval step")
+	}
+
+	// Parse approval request
+	var req validation.ApprovalRequest
+	if err := c.BodyParser(&req); err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
+	}
+
+	// Approve expense
+	expense, err := u.ExpenseService.ApproveExpense(c, uint(id), step, req.Action, req.Notes)
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusOK).
+		JSON(response.Success{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Approve expense successfully",
+			Data:    expense,
+		})
+}
+
+func (u *ExpenseController) CreateRealization(c *fiber.Ctx) error {
+	expenseID := c.Params("id")
+	id, err := strconv.Atoi(expenseID)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid expense ID")
+	}
+
+	req := new(validation.CreateRealization)
+
+	form, err := c.MultipartForm()
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid multipart form")
+	}
+	req.Documents = form.File["documents"]
+
+	// Parse realizations JSON
+	realizationsJSON := c.FormValue("realizations")
+	if realizationsJSON != "" {
+		if err := json.Unmarshal([]byte(realizationsJSON), &req.Realizations); err != nil {
+			return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Invalid realizations JSON: %v", err))
+		}
+	}
+
+	expense, err := u.ExpenseService.CreateRealization(c, uint(id), req)
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusCreated).
+		JSON(response.Success{
+			Code:    fiber.StatusCreated,
+			Status:  "success",
+			Message: "Create realization successfully",
+			Data:    expense,
+		})
+}
+
+func (u *ExpenseController) UpdateRealization(c *fiber.Ctx) error {
+	expenseID := c.Params("id")
+	id, err := strconv.Atoi(expenseID)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid expense ID")
+	}
+
+	var req validation.UpdateRealization
+	if err := c.BodyParser(&req); err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
+	}
+
+	expense, err := u.ExpenseService.UpdateRealization(c, uint(id), &req)
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusOK).
+		JSON(response.Success{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Update realization successfully",
+			Data:    expense,
+		})
+}
+
+func (u *ExpenseController) CompleteExpense(c *fiber.Ctx) error {
+	expenseID := c.Params("id")
+	id, err := strconv.Atoi(expenseID)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid expense ID")
+	}
+
+	expense, err := u.ExpenseService.CompleteExpense(c, uint(id), nil)
+	if err != nil {
+		return err
+	}
+
+	return c.Status(fiber.StatusOK).
+		JSON(response.Success{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Complete expense successfully",
+			Data:    expense,
+		})
+}

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

@@ -1,68 +1,322 @@
 package dto
 
 import (
+	"fmt"
 	"time"
 
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	approvalDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/approvals/dto"
+	nonstockDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/master/nonstocks/dto"
+	supplierDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/master/suppliers/dto"
 	userDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/users/dto"
 )
 
-// === DTO Structs ===
+// === Base DTO ===
 
 type ExpenseBaseDTO struct {
-	Id          uint64    `json:"id"`
-	PoNumber    string    `json:"po_number"`
-	ExpenseDate time.Time `json:"expense_date"`
-	GrandTotal  float64   `json:"grand_total"`
+	Id              uint64    `json:"id"`
+	ReferenceNumber string    `json:"reference_number"`
+	PoNumber        *string   `json:"po_number,omitempty"`
+	Category        string    `json:"category"`
+	ExpenseDate     time.Time `json:"expense_date"`
+	GrandTotal      float64   `json:"grand_total"`
 }
 
+// === List DTO (untuk GetAll) ===
+
 type ExpenseListDTO struct {
-	Id              uint64               `json:"id"`
-	ReferenceNumber string               `json:"reference_number"`
-	PoNumber        string               `json:"po_number"`
-	Category        string               `json:"category"`
-	ExpenseDate     time.Time            `json:"expense_date"`
-	GrandTotal      float64              `json:"grand_total"`
-	CreatedUser     *userDTO.UserBaseDTO `json:"created_user,omitempty"`
-	CreatedAt       time.Time            `json:"created_at"`
-	UpdatedAt       time.Time            `json:"updated_at"`
+	ExpenseBaseDTO
+	CreatedUser    *userDTO.UserBaseDTO         `json:"created_user,omitempty"`
+	CreatedAt      time.Time                    `json:"created_at"`
+	UpdatedAt      time.Time                    `json:"updated_at"`
+	LatestApproval *approvalDTO.ApprovalBaseDTO `json:"latest_approval,omitempty"`
+}
+
+// === Detail DTO (untuk GetOne) ===
+
+type ExpenseDetailDTO struct {
+	ExpenseBaseDTO
+	Supplier       *supplierDTO.SupplierBaseDTO `json:"supplier,omitempty"`
+	CreatedUser    *userDTO.UserBaseDTO         `json:"created_user,omitempty"`
+	Kandangs       []KandangGroupDTO            `json:"kandangs,omitempty"`
+	TotalPengajuan float64                      `json:"total_pengajuan"`
+	TotalRealisasi float64                      `json:"total_realisasi"`
+	CreatedAt      time.Time                    `json:"created_at"`
+	UpdatedAt      time.Time                    `json:"updated_at"`
+	LatestApproval *approvalDTO.ApprovalBaseDTO `json:"latest_approval,omitempty"`
+}
+
+// === Nested DTO ===
+
+type ExpenseNonstockDTO struct {
+	Id                  uint64                        `json:"id"`
+	Qty                 float64                       `json:"qty"`
+	UnitPrice           float64                       `json:"unit_price"`
+	TotalPrice          float64                       `json:"total_price"`
+	Note                *string                       `json:"note,omitempty"`
+	Nonstock            *nonstockDTO.NonstockBaseDTO  `json:"nonstock,omitempty"`
+	ProjectFlockKandang *ProjectFlockKandangNestedDTO `json:"project_flock_kandang,omitempty"`
+	Realization         *ExpenseRealizationDTO        `json:"realization,omitempty"`
+}
+
+type ProjectFlockKandangNestedDTO struct {
+	Id        uint64 `json:"id"`
+	KandangId uint64 `json:"kandang_id"`
+}
+
+type ExpenseRealizationDTO struct {
+	Id                    uint64    `json:"id"`
+	RealizationQty        float64   `json:"realization_qty"`
+	RealizationUnitPrice  float64   `json:"realization_unit_price"`
+	RealizationTotalPrice float64   `json:"realization_total_price"`
+	RealizationDate       time.Time `json:"realization_date"`
+	Note                  *string   `json:"note,omitempty"`
+}
+
+type RealizationOnlyDTO struct {
+	Id                    uint64                        `json:"id"`
+	RealizationQty        float64                       `json:"realization_qty"`
+	RealizationUnitPrice  float64                       `json:"realization_unit_price"`
+	RealizationTotalPrice float64                       `json:"realization_total_price"`
+	RealizationDate       time.Time                     `json:"realization_date"`
+	Note                  *string                       `json:"note,omitempty"`
+	Nonstock              *nonstockDTO.NonstockBaseDTO  `json:"nonstock,omitempty"`
+	ProjectFlockKandang   *ProjectFlockKandangNestedDTO `json:"project_flock_kandang,omitempty"`
+}
+
+type KandangDTO struct {
+	Id        uint64 `json:"id"`
+	KandangId uint64 `json:"kandang_id"`
+	Name      string `json:"name,omitempty"`
+}
+
+type KandangGroupDTO struct {
+	Id         uint64               `json:"id"`
+	KandangId  uint64               `json:"kandang_id"`
+	Name       string               `json:"name,omitempty"`
+	Pengajuans []ExpenseNonstockDTO `json:"pengajuans,omitempty"`
+	Realisasi  []RealizationOnlyDTO `json:"realisasi,omitempty"`
+}
+
+// === Helper Functions ===
+
+func getStringValue(s *string) string {
+	if s == nil {
+		return ""
+	}
+	return *s
 }
 
 // === Mapper Functions ===
 
-func ToExpenseBaseDTO(e entity.Expense) ExpenseBaseDTO {
+func ToExpenseBaseDTO(e *entity.Expense) ExpenseBaseDTO {
 	return ExpenseBaseDTO{
-		Id:          e.Id,
-		PoNumber:    e.PoNumber,
-		ExpenseDate: e.ExpenseDate,
-		GrandTotal:  e.GrandTotal,
-	}
-}
-
-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,
-		ReferenceNumber: *e.ReferenceNumber,
+		ReferenceNumber: getStringValue(e.ReferenceNumber),
 		PoNumber:        e.PoNumber,
 		Category:        e.Category,
 		ExpenseDate:     e.ExpenseDate,
 		GrandTotal:      e.GrandTotal,
-		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)
+func ToExpenseListDTO(e *entity.Expense) ExpenseListDTO {
+	var createdUser *userDTO.UserBaseDTO
+	if e.CreatedUser != nil && e.CreatedUser.Id != 0 {
+		mapped := userDTO.ToUserBaseDTO(*e.CreatedUser)
+		createdUser = &mapped
+	}
+
+	var latestApproval *approvalDTO.ApprovalBaseDTO
+	if e.LatestApproval != nil {
+		mapped := approvalDTO.ToApprovalDTO(*e.LatestApproval)
+		latestApproval = &mapped
+	}
+
+	return ExpenseListDTO{
+		ExpenseBaseDTO: ToExpenseBaseDTO(e),
+		CreatedUser:    createdUser,
+		CreatedAt:      e.CreatedAt,
+		UpdatedAt:      e.UpdatedAt,
+		LatestApproval: latestApproval,
+	}
+}
+
+func ToExpenseListDTOs(expenses []entity.Expense) []ExpenseListDTO {
+	result := make([]ExpenseListDTO, len(expenses))
+	for i, expense := range expenses {
+		result[i] = ToExpenseListDTO(&expense)
 	}
 	return result
 }
+
+func ToExpenseDetailDTO(e *entity.Expense) ExpenseDetailDTO {
+	var createdUser *userDTO.UserBaseDTO
+	if e.CreatedUser != nil && e.CreatedUser.Id != 0 {
+		mapped := userDTO.ToUserBaseDTO(*e.CreatedUser)
+		createdUser = &mapped
+	}
+
+	var supplier *supplierDTO.SupplierBaseDTO
+	if e.Supplier != nil && e.Supplier.Id != 0 {
+		mapped := supplierDTO.ToSupplierBaseDTO(*e.Supplier)
+		supplier = &mapped
+	}
+
+	var latestApproval *approvalDTO.ApprovalBaseDTO
+	if e.LatestApproval != nil {
+		mapped := approvalDTO.ToApprovalDTO(*e.LatestApproval)
+		latestApproval = &mapped
+	}
+
+	var pengajuans []ExpenseNonstockDTO
+	var realisasi []RealizationOnlyDTO
+
+	if len(e.Nonstocks) > 0 {
+		pengajuans = make([]ExpenseNonstockDTO, 0)
+		realisasi = make([]RealizationOnlyDTO, 0)
+
+		for _, ns := range e.Nonstocks {
+			// Create DTO without realization for pengajuans
+			pengajuanDTO := ToExpenseNonstockDTO(ns)
+			pengajuanDTO.Realization = nil // Remove realization from pengajuan
+			pengajuans = append(pengajuans, pengajuanDTO)
+
+			// Create separate DTO with realization data if it exists
+			if ns.Realization != nil && ns.Realization.Id != 0 {
+				// Create realization DTO with only realization data
+				var nonstock *nonstockDTO.NonstockBaseDTO
+				if ns.Nonstock != nil && ns.Nonstock.Id != 0 {
+					mapped := nonstockDTO.ToNonstockBaseDTO(*ns.Nonstock)
+					nonstock = &mapped
+				}
+
+				var projectFlockKandang *ProjectFlockKandangNestedDTO
+				if ns.ProjectFlockKandang != nil && ns.ProjectFlockKandang.Id != 0 {
+					projectFlockKandang = &ProjectFlockKandangNestedDTO{
+						Id:        uint64(ns.ProjectFlockKandang.Id),
+						KandangId: uint64(ns.ProjectFlockKandang.KandangId),
+					}
+				}
+
+				realisasiDTO := RealizationOnlyDTO{
+					Id:                    ns.Realization.Id,
+					RealizationQty:        ns.Realization.RealizationQty,
+					RealizationUnitPrice:  ns.Realization.RealizationUnitPrice,
+					RealizationTotalPrice: ns.Realization.RealizationTotalPrice,
+					RealizationDate:       ns.Realization.RealizationDate,
+					Note:                  ns.Realization.Note,
+					Nonstock:              nonstock,
+					ProjectFlockKandang:   projectFlockKandang,
+				}
+				realisasi = append(realisasi, realisasiDTO)
+			}
+		}
+	}
+
+	// Calculate total pengajuan and realisasi
+	var totalPengajuan float64
+	for _, p := range pengajuans {
+		totalPengajuan += p.TotalPrice
+	}
+
+	var totalRealisasi float64
+	for _, r := range realisasi {
+		totalRealisasi += r.RealizationTotalPrice
+	}
+
+	// Group pengajuans and realisasi by kandang
+	kandangMap := make(map[uint64]*KandangGroupDTO)
+
+	// Process pengajuans
+	for _, p := range pengajuans {
+		if p.ProjectFlockKandang != nil {
+			kandangId := p.ProjectFlockKandang.KandangId
+			if kandangMap[kandangId] == nil {
+				kandangMap[kandangId] = &KandangGroupDTO{
+					Id:        p.ProjectFlockKandang.Id,
+					KandangId: kandangId,
+					Name:      fmt.Sprintf("Kandang %d", kandangId),
+				}
+			}
+			kandangMap[kandangId].Pengajuans = append(kandangMap[kandangId].Pengajuans, p)
+		}
+	}
+
+	// Process realisasi
+	for _, r := range realisasi {
+		if r.ProjectFlockKandang != nil {
+			kandangId := r.ProjectFlockKandang.KandangId
+			if kandangMap[kandangId] == nil {
+				kandangMap[kandangId] = &KandangGroupDTO{
+					Id:        r.ProjectFlockKandang.Id,
+					KandangId: kandangId,
+					Name:      fmt.Sprintf("Kandang %d", kandangId),
+				}
+			}
+			kandangMap[kandangId].Realisasi = append(kandangMap[kandangId].Realisasi, r)
+		}
+	}
+
+	// Convert map to slice
+	var kandangs []KandangGroupDTO
+	for _, k := range kandangMap {
+		kandangs = append(kandangs, *k)
+	}
+
+	return ExpenseDetailDTO{
+		ExpenseBaseDTO: ToExpenseBaseDTO(e),
+		Supplier:       supplier,
+		CreatedUser:    createdUser,
+		Kandangs:       kandangs,
+		TotalPengajuan: totalPengajuan,
+		TotalRealisasi: totalRealisasi,
+		CreatedAt:      e.CreatedAt,
+		UpdatedAt:      e.UpdatedAt,
+		LatestApproval: latestApproval,
+	}
+}
+
+func ToExpenseNonstockDTO(ns entity.ExpenseNonstock) ExpenseNonstockDTO {
+	var nonstock *nonstockDTO.NonstockBaseDTO
+	if ns.Nonstock != nil && ns.Nonstock.Id != 0 {
+		mapped := nonstockDTO.ToNonstockBaseDTO(*ns.Nonstock)
+		nonstock = &mapped
+	}
+
+	var projectFlockKandang *ProjectFlockKandangNestedDTO
+	if ns.ProjectFlockKandang != nil && ns.ProjectFlockKandang.Id != 0 {
+		projectFlockKandang = &ProjectFlockKandangNestedDTO{
+			Id:        uint64(ns.ProjectFlockKandang.Id),
+			KandangId: uint64(ns.ProjectFlockKandang.KandangId),
+		}
+	}
+
+	var realization *ExpenseRealizationDTO
+	if ns.Realization != nil && ns.Realization.Id != 0 {
+		mapped := ToExpenseRealizationDTO(*ns.Realization)
+		realization = &mapped
+	}
+
+	return ExpenseNonstockDTO{
+		Id:                  ns.Id,
+		Qty:                 ns.Qty,
+		UnitPrice:           ns.UnitPrice,
+		TotalPrice:          ns.TotalPrice,
+		Note:                ns.Note,
+		Nonstock:            nonstock,
+		ProjectFlockKandang: projectFlockKandang,
+		Realization:         realization,
+	}
+}
+
+func ToExpenseRealizationDTO(r entity.ExpenseRealization) ExpenseRealizationDTO {
+	return ExpenseRealizationDTO{
+		Id:                    r.Id,
+		RealizationQty:        r.RealizationQty,
+		RealizationUnitPrice:  r.RealizationUnitPrice,
+		RealizationTotalPrice: r.RealizationTotalPrice,
+		RealizationDate:       r.RealizationDate,
+		Note:                  r.Note,
+	}
+}

internal/modules/expenses/module.go

@@ -1,15 +1,25 @@
 package expenses
 
 import (
+	"fmt"
+
 	"github.com/go-playground/validator/v10"
 	"github.com/gofiber/fiber/v2"
 	"gorm.io/gorm"
 
+	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	commonSvc "gitlab.com/mbugroup/lti-api.git/internal/common/service"
 	rExpense "gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/repositories"
 	sExpense "gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/services"
 
 	rUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/repositories"
 	sUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/services"
+
+	rNonstock "gitlab.com/mbugroup/lti-api.git/internal/modules/master/nonstocks/repositories"
+	rSupplier "gitlab.com/mbugroup/lti-api.git/internal/modules/master/suppliers/repositories"
+	rProjectFlockKandang "gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/repositories"
+
+	"gitlab.com/mbugroup/lti-api.git/internal/utils"
 )
 
 type ExpenseModule struct{}
@@ -17,10 +27,21 @@ type ExpenseModule struct{}
 func (ExpenseModule) RegisterRoutes(router fiber.Router, db *gorm.DB, validate *validator.Validate) {
 	expenseRepo := rExpense.NewExpenseRepository(db)
 	userRepo := rUser.NewUserRepository(db)
+	supplierRepo := rSupplier.NewSupplierRepository(db)
+	nonstockRepo := rNonstock.NewNonstockRepository(db)
+	approvalRepo := commonRepo.NewApprovalRepository(db)
+	realizationRepo := rExpense.NewExpenseRealizationRepository(db)
+	projectFlockKandangRepo := rProjectFlockKandang.NewProjectFlockKandangRepository(db)
 
-	expenseService := sExpense.NewExpenseService(expenseRepo, validate)
+	approvalSvc := commonSvc.NewApprovalService(approvalRepo)
+
+	// Register workflow steps for EXPENSES approval
+	if err := approvalSvc.RegisterWorkflowSteps(utils.ApprovalWorkflowExpense, utils.ExpenseApprovalSteps); err != nil {
+		panic(fmt.Sprintf("failed to register expense approval workflow: %v", err))
+	}
+
+	expenseService := sExpense.NewExpenseService(expenseRepo, supplierRepo, nonstockRepo, approvalSvc, realizationRepo, projectFlockKandangRepo, validate)
 	userService := sUser.NewUserService(userRepo, validate)
 
 	ExpenseRoutes(router, userService, expenseService)
 }
-

internal/modules/expenses/repositories/expense.repository.go

@@ -11,6 +11,8 @@ import (
 type ExpenseRepository interface {
 	repository.BaseRepository[entity.Expense]
 	IdExists(ctx context.Context, id uint64) (bool, error)
+	GetNextSequence(ctx context.Context) (int, error)
+	GetWithSupplier(ctx context.Context, id uint64) (*entity.Expense, error)
 }
 
 type ExpenseRepositoryImpl struct {
@@ -26,3 +28,24 @@ func NewExpenseRepository(db *gorm.DB) ExpenseRepository {
 func (r *ExpenseRepositoryImpl) IdExists(ctx context.Context, id uint64) (bool, error) {
 	return repository.Exists[entity.Expense](ctx, r.DB(), uint(id))
 }
+
+func (r *ExpenseRepositoryImpl) GetNextSequence(ctx context.Context) (int, error) {
+	var sequence int
+	err := r.DB().Raw("SELECT nextval('expenses_ref_seq')").Scan(&sequence).Error
+	if err != nil {
+		return 0, err
+	}
+	return sequence, nil
+}
+
+func (r *ExpenseRepositoryImpl) GetWithSupplier(ctx context.Context, id uint64) (*entity.Expense, error) {
+	var expense entity.Expense
+	err := r.DB().WithContext(ctx).
+		Where("id = ?", id).
+		Preload("Supplier").
+		First(&expense).Error
+	if err != nil {
+		return nil, err
+	}
+	return &expense, nil
+}

internal/modules/expenses/repositories/expense_nonstock.repository.go

@@ -11,6 +11,8 @@ import (
 type ExpenseNonstockRepository interface {
 	repository.BaseRepository[entity.ExpenseNonstock]
 	IdExists(ctx context.Context, id uint64) (bool, error)
+	GetByExpenseID(ctx context.Context, expenseID uint64, id uint64) (bool, error)
+	GetWithRelations(ctx context.Context, id uint64) (*entity.ExpenseNonstock, error)
 }
 
 type ExpenseNonstockRepositoryImpl struct {
@@ -26,3 +28,28 @@ func NewExpenseNonstockRepository(db *gorm.DB) ExpenseNonstockRepository {
 func (r *ExpenseNonstockRepositoryImpl) IdExists(ctx context.Context, id uint64) (bool, error) {
 	return repository.Exists[entity.ExpenseNonstock](ctx, r.DB(), uint(id))
 }
+
+func (r *ExpenseNonstockRepositoryImpl) GetByExpenseID(ctx context.Context, expenseID uint64, id uint64) (bool, error) {
+	var count int64
+	err := r.DB().WithContext(ctx).Model(&entity.ExpenseNonstock{}).
+		Where("id = ? AND expense_id = ?", id, expenseID).
+		Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (r *ExpenseNonstockRepositoryImpl) GetWithRelations(ctx context.Context, id uint64) (*entity.ExpenseNonstock, error) {
+	var expenseNonstock entity.ExpenseNonstock
+	err := r.DB().WithContext(ctx).
+		Where("id = ?", id).
+		Preload("Nonstock", func(db *gorm.DB) *gorm.DB {
+			return db.Preload("Suppliers")
+		}).
+		First(&expenseNonstock).Error
+	if err != nil {
+		return nil, err
+	}
+	return &expenseNonstock, nil
+}

internal/modules/expenses/repositories/expense_realization.repository.go

@@ -11,6 +11,7 @@ import (
 type ExpenseRealizationRepository interface {
 	repository.BaseRepository[entity.ExpenseRealization]
 	IdExists(ctx context.Context, id uint64) (bool, error)
+	GetByExpenseNonstockID(ctx context.Context, expenseNonstockID uint64) (*entity.ExpenseRealization, error)
 }
 
 type ExpenseRealizationRepositoryImpl struct {
@@ -26,3 +27,14 @@ func NewExpenseRealizationRepository(db *gorm.DB) ExpenseRealizationRepository {
 func (r *ExpenseRealizationRepositoryImpl) IdExists(ctx context.Context, id uint64) (bool, error) {
 	return repository.Exists[entity.ExpenseRealization](ctx, r.DB(), uint(id))
 }
+
+func (r *ExpenseRealizationRepositoryImpl) GetByExpenseNonstockID(ctx context.Context, expenseNonstockID uint64) (*entity.ExpenseRealization, error) {
+	var realization entity.ExpenseRealization
+	err := r.DB().WithContext(ctx).
+		Where("expense_nonstock_id = ?", expenseNonstockID).
+		First(&realization).Error
+	if err != nil {
+		return nil, err
+	}
+	return &realization, nil
+}

internal/modules/expenses/route.go

@@ -25,4 +25,9 @@ func ExpenseRoutes(v1 fiber.Router, u user.UserService, s expense.ExpenseService
 	route.Get("/:id", ctrl.GetOne)
 	route.Patch("/:id", ctrl.UpdateOne)
 	route.Delete("/:id", ctrl.DeleteOne)
+	route.Post("/:id/approvals/manager", ctrl.ApproveExpense)
+	route.Post("/:id/approvals/finance", ctrl.ApproveExpense)
+	route.Post("/:id/realizations", ctrl.CreateRealization)
+	route.Patch("/:id/realizations", ctrl.UpdateRealization)
+	route.Post("/:id/complete", ctrl.CompleteExpense)
 }

internal/modules/expenses/services/expense.service.go

@@ -1,12 +1,22 @@
 package service
 
 import (
+	"context"
 	"errors"
+	"fmt"
+	"time"
 
+	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	commonSvc "gitlab.com/mbugroup/lti-api.git/internal/common/service"
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	expenseDto "gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/dto"
 	repository "gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/repositories"
 	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/expenses/validations"
+	nonstockRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/master/nonstocks/repositories"
+	supplierRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/master/suppliers/repositories"
+	projectFlockKandangRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/repositories"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+	approvalutils "gitlab.com/mbugroup/lti-api.git/internal/utils/approvals"
 
 	"github.com/go-playground/validator/v10"
 	"github.com/gofiber/fiber/v2"
@@ -15,33 +25,78 @@ import (
 )
 
 type ExpenseService interface {
-	GetAll(ctx *fiber.Ctx, params *validation.Query) ([]entity.Expense, int64, error)
-	GetOne(ctx *fiber.Ctx, id uint) (*entity.Expense, error)
-	CreateOne(ctx *fiber.Ctx, req *validation.Create) (*entity.Expense, error)
-	UpdateOne(ctx *fiber.Ctx, req *validation.Update, id uint) (*entity.Expense, error)
+	GetAll(ctx *fiber.Ctx, params *validation.Query) ([]expenseDto.ExpenseListDTO, int64, error)
+	GetOne(ctx *fiber.Ctx, id uint) (*expenseDto.ExpenseDetailDTO, error)
+	CreateOne(ctx *fiber.Ctx, req *validation.Create) (*expenseDto.ExpenseDetailDTO, error)
+	UpdateOne(ctx *fiber.Ctx, req *validation.Update, id uint) (*expenseDto.ExpenseDetailDTO, error)
 	DeleteOne(ctx *fiber.Ctx, id uint) error
+	ApproveExpense(ctx *fiber.Ctx, id uint, step string, action string, notes *string) (*expenseDto.ExpenseDetailDTO, error)
+	CreateRealization(ctx *fiber.Ctx, expenseID uint, req *validation.CreateRealization) (*expenseDto.ExpenseDetailDTO, error)
+	CompleteExpense(ctx *fiber.Ctx, id uint, notes *string) (*expenseDto.ExpenseDetailDTO, error)
+	UpdateRealization(ctx *fiber.Ctx, expenseID uint, req *validation.UpdateRealization) (*expenseDto.ExpenseDetailDTO, error)
 }
 
 type expenseService struct {
-	Log        *logrus.Logger
-	Validate   *validator.Validate
-	Repository repository.ExpenseRepository
+	Log                     *logrus.Logger
+	Validate                *validator.Validate
+	Repository              repository.ExpenseRepository
+	SupplierRepo            supplierRepo.SupplierRepository
+	NonstockRepo            nonstockRepo.NonstockRepository
+	ApprovalSvc             commonSvc.ApprovalService
+	RealizationRepository   repository.ExpenseRealizationRepository
+	ProjectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository
 }
 
-func NewExpenseService(repo repository.ExpenseRepository, validate *validator.Validate) ExpenseService {
+func NewExpenseService(repo repository.ExpenseRepository, supplierRepo supplierRepo.SupplierRepository, nonstockRepo nonstockRepo.NonstockRepository, approvalSvc commonSvc.ApprovalService, realizationRepo repository.ExpenseRealizationRepository, projectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository, validate *validator.Validate) ExpenseService {
 	return &expenseService{
-		Log:        utils.Log,
-		Validate:   validate,
-		Repository: repo,
+		Log:                     utils.Log,
+		Validate:                validate,
+		Repository:              repo,
+		SupplierRepo:            supplierRepo,
+		NonstockRepo:            nonstockRepo,
+		ApprovalSvc:             approvalSvc,
+		RealizationRepository:   realizationRepo,
+		ProjectFlockKandangRepo: projectFlockKandangRepo,
 	}
 }
 
 func (s expenseService) withRelations(db *gorm.DB) *gorm.DB {
-	return db.Preload("CreatedUser")
+	return db.
+		Preload("CreatedUser").
+		Preload("Supplier").
+		Preload("Nonstocks", func(db *gorm.DB) *gorm.DB {
+			return db.Preload("Nonstock").Preload("Realization").Preload("ProjectFlockKandang")
+		})
 }
 
-func (s expenseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity.Expense, int64, error) {
+func (s expenseService) getExpenseWithDetails(c *fiber.Ctx, expenseId uint) (*expenseDto.ExpenseDetailDTO, error) {
+	expense, err := s.Repository.GetByID(c.Context(), expenseId, s.withRelations)
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			s.Log.Errorf("Expense not found for ID %d: %+v", expenseId, err)
+			return nil, fiber.NewError(fiber.StatusNotFound, "Expense not found")
+		}
+		s.Log.Errorf("Failed to get expense for ID %d: %+v", expenseId, err)
+		return nil, err
+	}
+
+	// Load latest approval with ActionUser
+	latestApproval, err := s.ApprovalSvc.LatestByTarget(c.Context(), utils.ApprovalWorkflowExpense, expenseId, func(db *gorm.DB) *gorm.DB {
+		return db.Preload("ActionUser")
+	})
+	if err != nil {
+		// Don't fail if approval loading fails, just log
+		s.Log.Warnf("Failed to load approval for expense %d: %+v", expenseId, err)
+	}
+	expense.LatestApproval = latestApproval
+
+	responseDTO := expenseDto.ToExpenseDetailDTO(expense)
+	return &responseDTO, nil
+}
+
+func (s expenseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]expenseDto.ExpenseListDTO, int64, error) {
 	if err := s.Validate.Struct(params); err != nil {
+		s.Log.Errorf("Validation failed for GetAll: %+v", err)
 		return nil, 0, err
 	}
 
@@ -50,7 +105,7 @@ func (s expenseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity
 	expenses, total, err := s.Repository.GetAll(c.Context(), offset, params.Limit, func(db *gorm.DB) *gorm.DB {
 		db = s.withRelations(db)
 		if params.Search != "" {
-			return db.Where("name LIKE ?", "%"+params.Search+"%")
+			return db.Where("category LIKE ?", "%"+params.Search+"%")
 		}
 		return db.Order("created_at DESC").Order("updated_at DESC")
 	})
@@ -59,57 +114,218 @@ func (s expenseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity
 		s.Log.Errorf("Failed to get expenses: %+v", err)
 		return nil, 0, err
 	}
-	return expenses, total, nil
+
+	// Load approvals for each expense
+	for i := range expenses {
+		latestApproval, err := s.ApprovalSvc.LatestByTarget(c.Context(), utils.ApprovalWorkflowExpense, uint(expenses[i].Id), func(db *gorm.DB) *gorm.DB {
+			return db.Preload("ActionUser")
+		})
+		if err != nil {
+			s.Log.Warnf("Failed to load approval for expense %d: %+v", expenses[i].Id, err)
+		}
+		expenses[i].LatestApproval = latestApproval
+	}
+
+	result := expenseDto.ToExpenseListDTOs(expenses)
+	return result, total, nil
 }
 
-func (s expenseService) GetOne(c *fiber.Ctx, id uint) (*entity.Expense, error) {
-	expense, err := s.Repository.GetByID(c.Context(), id, s.withRelations)
-	if errors.Is(err, gorm.ErrRecordNotFound) {
-		return nil, fiber.NewError(fiber.StatusNotFound, "Expense not found")
+func (s expenseService) GetOne(c *fiber.Ctx, id uint) (*expenseDto.ExpenseDetailDTO, error) {
+	return s.getExpenseWithDetails(c, id)
+}
+
+func (s *expenseService) CreateOne(c *fiber.Ctx, req *validation.Create) (*expenseDto.ExpenseDetailDTO, error) {
+	if err := s.Validate.Struct(req); err != nil {
+		return nil, err
 	}
+
+	// Validate supplier exists using common service
+	supplierID := uint(req.SupplierID)
+	supplierExistsFunc := func(ctx context.Context, id uint) (bool, error) {
+		return commonRepo.Exists[entity.Supplier](ctx, s.SupplierRepo.DB(), id)
+	}
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Supplier", ID: &supplierID, Exists: supplierExistsFunc},
+	); err != nil {
+		return nil, err
+	}
+
+	// Get supplier for category
+	supplierEntity, err := s.SupplierRepo.GetByID(c.Context(), uint(req.SupplierID), nil)
 	if err != nil {
-		s.Log.Errorf("Failed get expense by id: %+v", err)
-		return nil, err
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, fiber.NewError(fiber.StatusNotFound, "Supplier not found")
+		}
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get supplier")
 	}
-	return expense, nil
+
+	for _, costPerKandang := range req.CostPerKandangs {
+		for _, costItem := range costPerKandang.CostItems {
+			nonstockId := uint(costItem.NonstockID)
+
+			if err := commonSvc.EnsureRelations(c.Context(),
+				commonSvc.RelationCheck{Name: "Nonstock", ID: &nonstockId, Exists: s.NonstockRepo.IdExists},
+			); err != nil {
+				return nil, err
+			}
+
+			nonstockEntity, err := s.NonstockRepo.GetByID(c.Context(), nonstockId, func(db *gorm.DB) *gorm.DB {
+				return db.Preload("Suppliers")
+			})
+			if err != nil {
+				if errors.Is(err, gorm.ErrRecordNotFound) {
+					return nil, fiber.NewError(fiber.StatusNotFound, "Nonstock not found")
+				}
+				return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get nonstock")
+			}
+
+			supplierFound := false
+			for _, sn := range nonstockEntity.Suppliers {
+				if uint64(sn.Id) == req.SupplierID {
+					supplierFound = true
+					break
+				}
+			}
+			if !supplierFound {
+				return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Nonstock ID %d does not belong to supplier ID %d", nonstockId, req.SupplierID))
+			}
+		}
+	}
+
+	expenseDate, err := utils.ParseDateString(req.TransactionDate)
+	if err != nil {
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid transaction_date format")
+	}
+
+	var expense *entity.Expense
+	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(dbTransaction *gorm.DB) error {
+
+		expenseRepoTx := repository.NewExpenseRepository(dbTransaction)
+		expenseNonstockRepoTx := repository.NewExpenseNonstockRepository(dbTransaction)
+		approvalSvcTx := commonSvc.NewApprovalService(commonRepo.NewApprovalRepository(dbTransaction))
+
+		referenceNumber, err := s.generateReferenceNumber(dbTransaction)
+		if err != nil {
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to generate reference number")
+		}
+
+		var grandTotal float64
+		for _, costPerKandang := range req.CostPerKandangs {
+			for _, costItem := range costPerKandang.CostItems {
+				grandTotal += costItem.TotalCost
+			}
+		}
+
+		createdBy := uint64(1) //todo get from auth
+		expense = &entity.Expense{
+			ReferenceNumber: &referenceNumber,
+			PoNumber:        req.PoNumber,
+			Category:        supplierEntity.Category,
+			SupplierId:      &req.SupplierID,
+			ExpenseDate:     expenseDate,
+			GrandTotal:      grandTotal,
+			CreatedBy:       &createdBy,
+		}
+
+		if err := expenseRepoTx.CreateOne(c.Context(), expense, nil); err != nil {
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create expense")
+		}
+
+		if len(req.CostPerKandangs) > 0 {
+
+			for _, costPerKandang := range req.CostPerKandangs {
+
+				projectFlockKandangRepoTx := projectFlockKandangRepo.NewProjectFlockKandangRepository(dbTransaction)
+				projectFlockKandang, err := projectFlockKandangRepoTx.GetActiveByKandangID(c.Context(), uint(costPerKandang.KandangID))
+				if err != nil {
+					if errors.Is(err, gorm.ErrRecordNotFound) {
+						return fiber.NewError(fiber.StatusNotFound, "No active project flock kandang found for this kandang")
+					}
+
+					return fiber.NewError(fiber.StatusInternalServerError, "Failed to find project flock kandang for this kandang")
+				}
+
+				for _, costItem := range costPerKandang.CostItems {
+
+					projectFlockKandangId := uint64(projectFlockKandang.Id)
+					nonstockId := costItem.NonstockID
+					expenseNonstock := &entity.ExpenseNonstock{
+						ExpenseId:             &expense.Id,
+						ProjectFlockKandangId: &projectFlockKandangId,
+						NonstockId:            &nonstockId,
+						Qty:                   costItem.Quantity,
+						TotalPrice:            costItem.TotalCost,
+						Note:                  &costItem.Notes,
+					}
+
+					if err := expenseNonstockRepoTx.CreateOne(c.Context(), expenseNonstock, nil); err != nil {
+
+						return fiber.NewError(fiber.StatusInternalServerError, "Failed to create expense cost item")
+					}
+				}
+			}
+		}
+
+		approvalAction := entity.ApprovalActionCreated
+		createdByUint := uint(createdBy)
+		if _, err := approvalSvcTx.CreateApproval(
+			c.Context(),
+			utils.ApprovalWorkflowExpense,
+			uint(expense.Id),
+			utils.ExpenseStepPengajuan,
+			&approvalAction,
+			createdByUint,
+			nil); err != nil {
+
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create initial approval")
+		} // TODO: Handle documents (save file references)
+
+		return nil
+	})
+
+	if err != nil {
+		if fiberErr, ok := err.(*fiber.Error); ok {
+			return nil, fiberErr
+		}
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create expense")
+	}
+
+	return s.getExpenseWithDetails(c, uint(expense.Id))
 }
 
-func (s *expenseService) CreateOne(c *fiber.Ctx, req *validation.Create) (*entity.Expense, error) {
+func (s expenseService) UpdateOne(c *fiber.Ctx, req *validation.Update, id uint) (*expenseDto.ExpenseDetailDTO, error) {
 	if err := s.Validate.Struct(req); err != nil {
+		s.Log.Errorf("Validation failed for UpdateOne: %+v", err)
 		return nil, err
 	}
 
-	createdBy := uint64(1)
-	createBody := &entity.Expense{
-		PoNumber:  req.PoNumber,
-		Category:  req.Category,
-		CreatedBy: &createdBy,
-	}
-
-	if err := s.Repository.CreateOne(c.Context(), createBody, nil); err != nil {
-		s.Log.Errorf("Failed to create expense: %+v", err)
-		return nil, err
-	}
-
-	return s.GetOne(c, uint(createBody.Id))
-}
-
-func (s expenseService) UpdateOne(c *fiber.Ctx, req *validation.Update, id uint) (*entity.Expense, error) {
-	if err := s.Validate.Struct(req); err != nil {
+	// Validate expense exists using common service
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Expense", ID: &id, Exists: func(ctx context.Context, id uint) (bool, error) {
+			return s.Repository.IdExists(ctx, uint64(id))
+		}},
+	); err != nil {
 		return nil, err
 	}
 
 	updateBody := make(map[string]any)
 
-	if req.PoNumber != nil {
-		updateBody["po_number"] = *req.PoNumber
-	}
-	if req.Category != nil {
-		updateBody["category"] = *req.Category
+	if req.SupplierID != nil {
+		// Validate supplier exists using common service
+		supplierID := uint(*req.SupplierID)
+		if err := commonSvc.EnsureRelations(c.Context(),
+			commonSvc.RelationCheck{Name: "Supplier", ID: &supplierID, Exists: func(ctx context.Context, id uint) (bool, error) {
+				return commonRepo.Exists[entity.Supplier](ctx, s.SupplierRepo.DB(), id)
+			}},
+		); err != nil {
+			return nil, err
+		}
+
+		updateBody["supplier_id"] = *req.SupplierID
 	}
 
 	if len(updateBody) == 0 {
-		return s.GetOne(c, id)
+		return s.getExpenseWithDetails(c, id)
 	}
 
 	if err := s.Repository.PatchOne(c.Context(), id, updateBody, nil); err != nil {
@@ -120,16 +336,368 @@ func (s expenseService) UpdateOne(c *fiber.Ctx, req *validation.Update, id uint)
 		return nil, err
 	}
 
-	return s.GetOne(c, id)
+	return s.getExpenseWithDetails(c, id)
 }
 
 func (s expenseService) DeleteOne(c *fiber.Ctx, id uint) error {
-	if err := s.Repository.DeleteOne(c.Context(), id); err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return fiber.NewError(fiber.StatusNotFound, "Expense not found")
-		}
-		s.Log.Errorf("Failed to delete expense: %+v", err)
+	// Validate expense exists using common service
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Expense", ID: &id, Exists: func(ctx context.Context, id uint) (bool, error) {
+			return s.Repository.IdExists(ctx, uint64(id))
+		}},
+	); err != nil {
 		return err
 	}
+
+	if err := s.Repository.DeleteOne(c.Context(), id); err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			s.Log.Errorf("Expense not found for ID %d: %+v", id, err)
+			return fiber.NewError(fiber.StatusNotFound, "Expense not found")
+		}
+		s.Log.Errorf("Failed to delete expense for ID %d: %+v", id, err)
+		return err
+	}
+	s.Log.Infof("Successfully deleted expense with ID %d", id)
 	return nil
 }
+
+func (s *expenseService) ApproveExpense(c *fiber.Ctx, id uint, stepName string, action string, notes *string) (*expenseDto.ExpenseDetailDTO, error) {
+
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Expense", ID: &id, Exists: func(ctx context.Context, id uint) (bool, error) {
+			return s.Repository.IdExists(ctx, uint64(id))
+		}},
+	); err != nil {
+		return nil, err
+	}
+
+	actorID := uint(1) // TODO: replace with authenticated user id
+
+	var stepNumber approvalutils.ApprovalStep
+	switch stepName {
+	case "Manager":
+		stepNumber = utils.ExpenseStepManager
+	case "Finance":
+		stepNumber = utils.ExpenseStepFinance
+	default:
+		s.Log.Errorf("Invalid approval step: %s", stepName)
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid approval step")
+	}
+
+	var expectedPreviousStep uint16
+	switch stepName {
+	case "Manager":
+		expectedPreviousStep = uint16(utils.ExpenseStepPengajuan)
+	case "Finance":
+		expectedPreviousStep = uint16(utils.ExpenseStepManager)
+	}
+
+	latestApproval, err := s.ApprovalSvc.LatestByTarget(c.Context(), utils.ApprovalWorkflowExpense, id, nil)
+	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate workflow")
+	}
+
+	if latestApproval == nil {
+		return nil, fiber.NewError(fiber.StatusBadRequest, "No approval found. Please create expense first.")
+	}
+
+	if latestApproval.StepNumber != expectedPreviousStep {
+
+		expectedStepName := utils.ExpenseApprovalSteps[approvalutils.ApprovalStep(expectedPreviousStep)]
+		currentStepName := utils.ExpenseApprovalSteps[approvalutils.ApprovalStep(latestApproval.StepNumber)]
+
+		return nil, fiber.NewError(fiber.StatusBadRequest,
+			fmt.Sprintf("Cannot approve at step %s. Latest approval is at %s step. Expected previous step: %s",
+				stepName, currentStepName, expectedStepName))
+	}
+
+	var approvalAction entity.ApprovalAction
+	switch action {
+	case "APPROVED":
+		approvalAction = entity.ApprovalActionApproved
+	case "REJECTED":
+		approvalAction = entity.ApprovalActionRejected
+	default:
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid approval action")
+	}
+
+	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(tx *gorm.DB) error {
+
+		approvalSvc := commonSvc.NewApprovalService(commonRepo.NewApprovalRepository(tx))
+		expenseRepoTx := repository.NewExpenseRepository(tx)
+
+		if _, err := approvalSvc.CreateApproval(
+			c.Context(),
+			utils.ApprovalWorkflowExpense,
+			id,
+			stepNumber,
+			&approvalAction,
+			actorID,
+			notes); err != nil {
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create approval")
+		}
+
+		if stepName == "Finance" && action == "APPROVED" {
+			poNumber, err := s.generatePoNumber(tx, id)
+			if err != nil {
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to generate PO number")
+			}
+
+			updateData := map[string]interface{}{
+				"po_number": poNumber,
+			}
+			if err := expenseRepoTx.PatchOne(c.Context(), id, updateData, nil); err != nil {
+
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to update PO number")
+			}
+		}
+
+		return nil
+	})
+	if err != nil {
+		if fiberErr, ok := err.(*fiber.Error); ok {
+			return nil, fiberErr
+		}
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to Approve")
+	}
+
+	return s.getExpenseWithDetails(c, id)
+}
+
+func (s *expenseService) CreateRealization(c *fiber.Ctx, expenseID uint, req *validation.CreateRealization) (*expenseDto.ExpenseDetailDTO, error) {
+	if err := s.Validate.Struct(req); err != nil {
+		return nil, err
+	}
+
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Expense", ID: &expenseID, Exists: func(ctx context.Context, id uint) (bool, error) {
+			return s.Repository.IdExists(ctx, uint64(id))
+		}},
+	); err != nil {
+		return nil, err
+	}
+	realizationDate := time.Now()
+	createdBy := uint64(1) // TODO: replace with authenticated user id
+
+	if err := s.Repository.DB().WithContext(c.Context()).Transaction(func(tx *gorm.DB) error {
+
+		approvalSvc := commonSvc.NewApprovalService(commonRepo.NewApprovalRepository(tx))
+		realizationRepoTx := repository.NewExpenseRealizationRepository(tx)
+		expenseNonstockRepoTx := repository.NewExpenseNonstockRepository(tx)
+
+		for _, realizationItem := range req.Realizations {
+
+			expenseNonstockID := realizationItem.ExpenseNonstockID
+
+			belongsToExpense, err := expenseNonstockRepoTx.GetByExpenseID(c.Context(), uint64(expenseID), uint64(expenseNonstockID))
+			if err != nil {
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to validate ExpenseNonstock relation")
+			}
+			if !belongsToExpense {
+				return fiber.NewError(fiber.StatusNotFound, "ExpenseNonstock not found or does not belong to this expense")
+			}
+
+			_, err = realizationRepoTx.GetByExpenseNonstockID(c.Context(), uint64(expenseNonstockID))
+			if err == nil {
+				return fiber.NewError(fiber.StatusBadRequest, "Realization already exists for this expense nonstock")
+			} else if !errors.Is(err, gorm.ErrRecordNotFound) {
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to check existing realization")
+			}
+
+			realization := &entity.ExpenseRealization{
+				ExpenseNonstockId:     &expenseNonstockID,
+				RealizationQty:        realizationItem.Qty,
+				RealizationUnitPrice:  realizationItem.UnitPrice,
+				RealizationTotalPrice: realizationItem.TotalPrice,
+				RealizationDate:       realizationDate,
+				Note:                  realizationItem.Notes,
+				CreatedBy:             &createdBy,
+			}
+
+			if err := realizationRepoTx.CreateOne(c.Context(), realization, nil); err != nil {
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to create realization")
+			}
+		}
+
+		approvalAction := entity.ApprovalActionCreated
+		if _, err := approvalSvc.CreateApproval(
+			c.Context(),
+			utils.ApprovalWorkflowExpense,
+			expenseID,
+			utils.ExpenseStepRealisasi,
+			&approvalAction,
+			uint(createdBy),
+			nil); err != nil {
+
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create realization approval")
+		}
+
+		return nil
+	}); err != nil {
+		return nil, err
+	}
+
+	return s.getExpenseWithDetails(c, expenseID)
+}
+
+func (s *expenseService) CompleteExpense(c *fiber.Ctx, id uint, notes *string) (*expenseDto.ExpenseDetailDTO, error) {
+	// Validate expense exists using common service
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Expense", ID: &id, Exists: func(ctx context.Context, id uint) (bool, error) {
+			return s.Repository.IdExists(ctx, uint64(id))
+		}},
+	); err != nil {
+		return nil, err
+	}
+
+	actorID := uint(1) // TODO: replace with authenticated user id
+
+	// Get latest approval to validate workflow
+	latestApproval, err := s.ApprovalSvc.LatestByTarget(c.Context(), utils.ApprovalWorkflowExpense, id, nil)
+	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		s.Log.Errorf("Failed to get latest approval for expense %d: %+v", id, err)
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate workflow")
+	}
+
+	// Check if expense can be completed (must be at Realisasi step)
+	if latestApproval == nil {
+		s.Log.Errorf("No approval found for expense %d", id)
+		return nil, fiber.NewError(fiber.StatusBadRequest, "No approval found. Please create expense first.")
+	}
+
+	if latestApproval.StepNumber != uint16(utils.ExpenseStepRealisasi) {
+		currentStepName := utils.ExpenseApprovalSteps[approvalutils.ApprovalStep(latestApproval.StepNumber)]
+		s.Log.Errorf("Cannot complete expense at step %s. Must be at Realisasi step", currentStepName)
+		return nil, fiber.NewError(fiber.StatusBadRequest,
+			fmt.Sprintf("Cannot complete expense at %s step. Must be at Realisasi step", currentStepName))
+	}
+
+	// Create approval for Selesai step (step 5) using transaction
+	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(tx *gorm.DB) error {
+		approvalSvc := commonSvc.NewApprovalService(commonRepo.NewApprovalRepository(tx))
+		approvalAction := entity.ApprovalActionApproved
+
+		if _, err := approvalSvc.CreateApproval(
+			c.Context(),
+			utils.ApprovalWorkflowExpense,
+			id,
+			utils.ExpenseStepSelesai,
+			&approvalAction,
+			actorID,
+			notes); err != nil {
+			s.Log.Errorf("Failed to create Selesai approval for expense %d: %+v", id, err)
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to complete expense")
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return s.getExpenseWithDetails(c, id)
+}
+
+func (s *expenseService) UpdateRealization(c *fiber.Ctx, expenseID uint, req *validation.UpdateRealization) (*expenseDto.ExpenseDetailDTO, error) {
+	if err := s.Validate.Struct(req); err != nil {
+		s.Log.Errorf("Validation failed for UpdateRealization: %+v", err)
+		return nil, err
+	}
+
+	// Validate Expense exists using common service
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Expense", ID: &expenseID, Exists: func(ctx context.Context, id uint) (bool, error) {
+			return s.Repository.IdExists(ctx, uint64(id))
+		}},
+	); err != nil {
+		return nil, err
+	}
+
+	// Use current date for realization date
+	realizationDate := time.Now()
+
+	// Update realizations using transaction
+	if err := s.Repository.DB().WithContext(c.Context()).Transaction(func(tx *gorm.DB) error {
+		realizationRepoTx := repository.NewExpenseRealizationRepository(tx)
+		expenseNonstockRepoTx := repository.NewExpenseNonstockRepository(tx)
+
+		// Process each realization item
+		for _, realizationItem := range req.Realizations {
+			// Validate ExpenseNonstock exists and belongs to this expense
+			expenseNonstockID := realizationItem.ExpenseNonstockID
+
+			belongsToExpense, err := expenseNonstockRepoTx.GetByExpenseID(c.Context(), uint64(expenseID), uint64(expenseNonstockID))
+			if err != nil {
+				s.Log.Errorf("Failed to validate ExpenseNonstock relation: %+v", err)
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to validate ExpenseNonstock relation")
+			}
+			if !belongsToExpense {
+				s.Log.Errorf("ExpenseNonstock not found or does not belong to expense %d", expenseID)
+				return fiber.NewError(fiber.StatusNotFound, "ExpenseNonstock not found or does not belong to this expense")
+			}
+
+			// Get existing realization
+			existingRealization, err := realizationRepoTx.GetByExpenseNonstockID(c.Context(), uint64(expenseNonstockID))
+			if err != nil {
+				if errors.Is(err, gorm.ErrRecordNotFound) {
+					s.Log.Errorf("Realization not found for expense nonstock %d", expenseNonstockID)
+					return fiber.NewError(fiber.StatusNotFound, "Realization not found for this expense nonstock")
+				}
+				s.Log.Errorf("Failed to get existing realization: %+v", err)
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get existing realization")
+			}
+
+			// Update realization
+			updateData := map[string]interface{}{
+				"realization_qty":         realizationItem.Qty,
+				"realization_unit_price":  realizationItem.UnitPrice,
+				"realization_total_price": realizationItem.TotalPrice,
+				"realization_date":        realizationDate,
+			}
+
+			if realizationItem.Notes != nil {
+				updateData["note"] = *realizationItem.Notes
+			}
+
+			if err := realizationRepoTx.PatchOne(c.Context(), uint(existingRealization.Id), updateData, nil); err != nil {
+				s.Log.Errorf("Failed to update realization: %+v", err)
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to update realization")
+			}
+		}
+
+		return nil
+	}); err != nil {
+		return nil, err
+	}
+
+	// Return updated expense
+	return s.getExpenseWithDetails(c, expenseID)
+}
+
+func (s *expenseService) generateReferenceNumber(ctx *gorm.DB) (string, error) {
+
+	sequence, err := s.Repository.GetNextSequence(ctx.Statement.Context)
+	if err != nil {
+		return "", err
+	}
+	refNum := fmt.Sprintf("BOP-LTI-%05d", sequence)
+
+	return refNum, nil
+}
+
+func (s *expenseService) generatePoNumber(ctx *gorm.DB, expenseID uint) (string, error) {
+
+	expenseRepoTx := repository.NewExpenseRepository(ctx)
+	expense, err := expenseRepoTx.GetByID(context.Background(), uint(expenseID), nil)
+	if err != nil {
+		return "", err
+	}
+	if expense.ReferenceNumber == nil {
+		return "", errors.New("reference number is required")
+	}
+
+	poNum := fmt.Sprintf("PO-%s", *expense.ReferenceNumber)
+
+	return poNum, nil
+}

internal/modules/expenses/validations/expense.validation.go

@@ -1,13 +1,41 @@
 package validation
 
+import (
+	"mime/multipart"
+)
+
+// ApprovalRequest is used for expense approval endpoints
+type ApprovalRequest struct {
+	Action string  `json:"action" validate:"required,oneof=APPROVED REJECTED"`
+	Notes  *string `json:"notes"`
+}
+
 type Create struct {
-	PoNumber string `json:"po_number" validate:"required,max=50"`
-	Category string `json:"category" validate:"required,max=50"`
+	PoNumber        *string                 `form:"po_number" validate:"omitempty,max=50"`
+	TransactionDate string                  `form:"transaction_date" validate:"required,datetime=2006-01-02"`
+	SupplierID      uint64                  `form:"supplier_id" validate:"required,gt=0"`
+	Documents       []*multipart.FileHeader `form:"documents" validate:"omitempty,dive"`
+	CostPerKandangs []CostPerKandang        `form:"cost_per_kandangs" validate:"required,min=1,dive"`
+}
+
+type CostPerKandang struct {
+	KandangID uint64     `json:"kandang_id" form:"kandang_id" validate:"required,gt=0"`
+	CostItems []CostItem `json:"cost_items" form:"cost_items" validate:"required,min=1,dive"`
+}
+
+type CostItem struct {
+	NonstockID uint64  `json:"nonstock_id" form:"nonstock_id" validate:"required,gt=0"`
+	Quantity   float64 `json:"quantity" form:"quantity" validate:"required,gt=0"`
+	TotalCost  float64 `json:"total_cost" form:"total_cost" validate:"required,gt=0"`
+	Notes      string  `json:"notes" form:"notes" validate:"required,max=500"`
 }
 
 type Update struct {
-	PoNumber *string `json:"po_number,omitempty" validate:"omitempty,max=50"`
-	Category *string `json:"category,omitempty" validate:"omitempty,max=50"`
+	PoNumber        *string           `json:"po_number,omitempty" validate:"omitempty,max=50"`
+	TransactionDate *string           `json:"transaction_date,omitempty" validate:"omitempty,datetime=2006-01-02"`
+	SupplierID      *uint64           `json:"supplier_id,omitempty" validate:"omitempty,gt=0"`
+	Documents       *[]string         `json:"documents,omitempty" validate:"omitempty,dive,max=255"`
+	CostPerKandang  *[]CostPerKandang `json:"cost_per_kandang,omitempty" validate:"omitempty,min=1,dive"`
 }
 
 type Query struct {
@@ -15,3 +43,23 @@ type Query struct {
 	Limit  int    `query:"limit" validate:"omitempty,number,min=1,max=100,gt=0"`
 	Search string `query:"search" validate:"omitempty,max=50"`
 }
+
+type CreateRealization struct {
+	Documents    []*multipart.FileHeader `form:"documents" validate:"omitempty,dive"`
+	Realizations []RealizationItem       `json:"realizations" form:"realizations" validate:"required,min=1,dive"`
+}
+
+type RealizationItem struct {
+	ExpenseNonstockID uint64  `json:"expense_nonstock_id" form:"expense_nonstock_id" validate:"required,gt=0"`
+	Qty               float64 `json:"qty" form:"qty" validate:"required,gt=0"`
+	UnitPrice         float64 `json:"unit_price" form:"unit_price" validate:"required,gt=0"`
+	TotalPrice        float64 `json:"total_price" form:"total_price" validate:"required,gt=0"`
+	Notes             *string `json:"notes" form:"notes" validate:"omitempty,max=500"`
+}
+
+type CompleteExpense struct {
+}
+
+type UpdateRealization struct {
+	Realizations []RealizationItem `json:"realizations" validate:"required,min=1,dive"`
+}

internal/modules/master/nonstocks/repositories/nonstock.repository.go

@@ -18,6 +18,7 @@ type NonstockRepository interface {
 	SyncFlags(ctx context.Context, tx *gorm.DB, nonstockID uint, flags []string) error
 	DeleteFlags(ctx context.Context, tx *gorm.DB, nonstockID uint) error
 	GetFlags(ctx context.Context, nonstockID uint) ([]entity.Flag, error)
+	IdExists(ctx context.Context, id uint) (bool, error)
 }
 
 type NonstockRepositoryImpl struct {
@@ -34,6 +35,10 @@ func (r *NonstockRepositoryImpl) NameExists(ctx context.Context, name string, ex
 	return repository.ExistsByName[entity.Nonstock](ctx, r.DB(), name, excludeID)
 }
 
+func (r *NonstockRepositoryImpl) IdExists(ctx context.Context, id uint) (bool, error) {
+	return repository.Exists[entity.Nonstock](ctx, r.DB(), id)
+}
+
 func (r *NonstockRepositoryImpl) SyncSuppliersDiff(ctx context.Context, tx *gorm.DB, nonstockID uint, supplierIDs []uint) error {
 	db := tx
 	if db == nil {

internal/modules/production/project_flocks/repositories/projectflock_kandang.repository.go

@@ -13,6 +13,7 @@ import (
 type ProjectFlockKandangRepository interface {
 	GetByID(ctx context.Context, id uint) (*entity.ProjectFlockKandang, error)
 	GetByProjectFlockAndKandang(ctx context.Context, projectFlockID uint, kandangID uint) (*entity.ProjectFlockKandang, error)
+	GetActiveByKandangID(ctx context.Context, kandangID uint) (*entity.ProjectFlockKandang, error)
 	CreateMany(ctx context.Context, records []*entity.ProjectFlockKandang) error
 	DeleteMany(ctx context.Context, projectFlockID uint, kandangIDs []uint) error
 	GetAll(ctx context.Context, offset int, limit int, modifier func(*gorm.DB) *gorm.DB) ([]entity.ProjectFlockKandang, int64, error)
@@ -220,6 +221,35 @@ func (r *projectFlockKandangRepositoryImpl) GetByProjectFlockAndKandang(ctx cont
 	return record, nil
 }
 
+func (r *projectFlockKandangRepositoryImpl) GetActiveByKandangID(ctx context.Context, kandangID uint) (*entity.ProjectFlockKandang, error) {
+	record := new(entity.ProjectFlockKandang)
+	if err := r.db.WithContext(ctx).
+		Joins("JOIN project_flocks ON project_flocks.id = project_flock_kandangs.project_flock_id").
+		Joins(`
+			INNER JOIN (
+				SELECT DISTINCT ON (approvable_id) approvable_id, step_name, action_at
+				FROM approvals
+				WHERE approvable_type = 'PROJECT_FLOCKS'
+				ORDER BY approvable_id, action_at DESC
+			) latest_approval ON latest_approval.approvable_id = project_flocks.id
+		`).
+		Where("project_flock_kandangs.kandang_id = ?", kandangID).
+		Where("LOWER(latest_approval.step_name) = LOWER(?)", "Aktif").
+		Order("project_flock_kandangs.id DESC").
+		Preload("ProjectFlock").
+		Preload("ProjectFlock.Fcr").
+		Preload("ProjectFlock.Area").
+		Preload("ProjectFlock.Location").
+		Preload("ProjectFlock.CreatedUser").
+		Preload("ProjectFlock.Kandangs").
+		Preload("ProjectFlock.KandangHistory").
+		Preload("Kandang").
+		First(record).Error; err != nil {
+		return nil, err
+	}
+	return record, nil
+}
+
 func (r *projectFlockKandangRepositoryImpl) ListExistingKandangIDs(ctx context.Context, projectFlockID uint, kandangIDs []uint) ([]uint, error) {
 	if len(kandangIDs) == 0 {
 		return nil, nil