package service

import (
	"context"
	"time"

	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
	"gitlab.com/mbugroup/lti-api.git/internal/utils"
)

const (
	hppV2ComponentPakan      = "PAKAN"
	hppV2ComponentOvk        = "OVK"
	hppV2ComponentBopRegular = "BOP_REGULAR"
	hppV2ComponentBopEksp    = "BOP_EKSPEDISI"
	hppV2PartGrowingNormal   = "growing_normal"
	hppV2PartGrowingCutover  = "growing_cutover"
	hppV2PartLayingNormal    = "laying_normal"
	hppV2PartLayingCutover   = "laying_cutover"
	hppV2PartGrowingDirect   = "growing_direct"
	hppV2PartGrowingFarm     = "growing_farm"
	hppV2PartLayingDirect    = "laying_direct"
	hppV2PartLayingFarm      = "laying_farm"
	hppV2ProrationPopulation = "growing_population_share"
	hppV2ProrationEggWeight  = "laying_egg_weight_share"
	hppV2ProrationEggPiece   = "laying_egg_piece_share"
	hppV2CutoverFlagPakan    = "PAKAN-CUTOVER"
	hppV2CutoverFlagOvk      = "OVK-CUTOVER"
)

type HppV2Service interface {
	CalculateHppCost(projectFlockKandangId uint, date *time.Time) (*HppCostResponse, error)
	CalculateHppBreakdown(projectFlockKandangId uint, date *time.Time) (*HppV2Breakdown, error)
	GetCostPakan(projectFlockKandangId uint, endDate *time.Time) (float64, error)
	GetCostOvk(projectFlockKandangId uint, endDate *time.Time) (float64, error)
	GetCostBopRegular(projectFlockKandangId uint, endDate *time.Time) (float64, error)
	GetCostBopEkspedisi(projectFlockKandangId uint, endDate *time.Time) (float64, error)
	GetPakanBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error)
	GetOvkBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error)
	GetBopRegularBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error)
	GetBopEkspedisiBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error)
	GetHppEstimationDanRealisasi(totalProductionCost float64, projectFlockKandangId uint, startDate *time.Time, endDate *time.Time) (*HppCostResponse, error)
}

type hppV2Service struct {
	hppRepo commonRepo.HppV2CostRepository
}

type hppV2StockComponentConfig struct {
	Code         string
	Title        string
	NormalFlags  []string
	CutoverFlags []string
}

type hppV2ExpenseComponentConfig struct {
	Code      string
	Title     string
	Ekspedisi bool
}

func NewHppV2Service(hppRepo commonRepo.HppV2CostRepository) HppV2Service {
	return &hppV2Service{hppRepo: hppRepo}
}

func (s *hppV2Service) CalculateHppCost(projectFlockKandangId uint, date *time.Time) (*HppCostResponse, error) {
	breakdown, err := s.CalculateHppBreakdown(projectFlockKandangId, date)
	if err != nil {
		return nil, err
	}
	if breakdown == nil {
		return &HppCostResponse{}, nil
	}

	result := breakdown.Hpp
	return &result, nil
}

func (s *hppV2Service) CalculateHppBreakdown(projectFlockKandangId uint, date *time.Time) (*HppV2Breakdown, error) {
	if s.hppRepo == nil {
		return &HppV2Breakdown{
			ProjectFlockKandangID: projectFlockKandangId,
			Hpp:                   HppCostResponse{},
		}, nil
	}

	startOfDay, endOfDay, err := hppV2DayWindow(date)
	if err != nil {
		return nil, err
	}

	contextRow, err := s.hppRepo.GetProjectFlockKandangContext(context.Background(), projectFlockKandangId)
	if err != nil {
		return nil, err
	}

	pakanComponent, err := s.GetPakanBreakdown(projectFlockKandangId, &endOfDay)
	if err != nil {
		return nil, err
	}

	totalProductionCost := 0.0
	components := make([]HppV2Component, 0, 4)
	if pakanComponent != nil && (pakanComponent.Total > 0 || len(pakanComponent.Parts) > 0) {
		totalProductionCost += pakanComponent.Total
		components = append(components, *pakanComponent)
	}

	ovkComponent, err := s.GetOvkBreakdown(projectFlockKandangId, &endOfDay)
	if err != nil {
		return nil, err
	}
	if ovkComponent != nil && (ovkComponent.Total > 0 || len(ovkComponent.Parts) > 0) {
		totalProductionCost += ovkComponent.Total
		components = append(components, *ovkComponent)
	}

	bopRegularComponent, err := s.GetBopRegularBreakdown(projectFlockKandangId, &endOfDay)
	if err != nil {
		return nil, err
	}
	if bopRegularComponent != nil && (bopRegularComponent.Total > 0 || len(bopRegularComponent.Parts) > 0) {
		totalProductionCost += bopRegularComponent.Total
		components = append(components, *bopRegularComponent)
	}

	bopEkspedisiComponent, err := s.GetBopEkspedisiBreakdown(projectFlockKandangId, &endOfDay)
	if err != nil {
		return nil, err
	}
	if bopEkspedisiComponent != nil && (bopEkspedisiComponent.Total > 0 || len(bopEkspedisiComponent.Parts) > 0) {
		totalProductionCost += bopEkspedisiComponent.Total
		components = append(components, *bopEkspedisiComponent)
	}

	hppCost, err := s.GetHppEstimationDanRealisasi(totalProductionCost, projectFlockKandangId, &startOfDay, &endOfDay)
	if err != nil {
		return nil, err
	}
	if hppCost == nil {
		hppCost = &HppCostResponse{}
	}

	return &HppV2Breakdown{
		ProjectFlockKandangID: projectFlockKandangId,
		ProjectFlockID:        contextRow.ProjectFlockID,
		ProjectFlockCategory:  contextRow.ProjectFlockCategory,
		KandangID:             contextRow.KandangID,
		KandangName:           contextRow.KandangName,
		LocationID:            contextRow.LocationID,
		PeriodDate:            startOfDay.Format("2006-01-02"),
		Window: HppV2DateWindow{
			Start: startOfDay.Format(time.RFC3339),
			End:   endOfDay.Format(time.RFC3339),
		},
		TotalProductionCost: totalProductionCost,
		Components:          components,
		Hpp:                 *hppCost,
	}, nil
}

func (s *hppV2Service) GetCostPakan(projectFlockKandangId uint, endDate *time.Time) (float64, error) {
	component, err := s.GetPakanBreakdown(projectFlockKandangId, endDate)
	if err != nil {
		return 0, err
	}
	if component == nil {
		return 0, nil
	}

	return component.Total, nil
}

func (s *hppV2Service) GetPakanBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error) {
	return s.getStockUsageComponent(projectFlockKandangId, endDate, hppV2StockComponentConfig{
		Code:         hppV2ComponentPakan,
		Title:        "Pakan",
		NormalFlags:  []string{string(utils.FlagPakan)},
		CutoverFlags: []string{hppV2CutoverFlagPakan},
	})
}

func (s *hppV2Service) GetCostOvk(projectFlockKandangId uint, endDate *time.Time) (float64, error) {
	component, err := s.GetOvkBreakdown(projectFlockKandangId, endDate)
	if err != nil {
		return 0, err
	}
	if component == nil {
		return 0, nil
	}

	return component.Total, nil
}

func (s *hppV2Service) GetOvkBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error) {
	return s.getStockUsageComponent(projectFlockKandangId, endDate, hppV2StockComponentConfig{
		Code:  hppV2ComponentOvk,
		Title: "OVK",
		NormalFlags: []string{
			string(utils.FlagOVK),
			string(utils.FlagObat),
			string(utils.FlagVitamin),
			string(utils.FlagKimia),
		},
		CutoverFlags: []string{hppV2CutoverFlagOvk},
	})
}

func (s *hppV2Service) GetCostBopRegular(projectFlockKandangId uint, endDate *time.Time) (float64, error) {
	component, err := s.GetBopRegularBreakdown(projectFlockKandangId, endDate)
	if err != nil {
		return 0, err
	}
	if component == nil {
		return 0, nil
	}

	return component.Total, nil
}

func (s *hppV2Service) GetCostBopEkspedisi(projectFlockKandangId uint, endDate *time.Time) (float64, error) {
	component, err := s.GetBopEkspedisiBreakdown(projectFlockKandangId, endDate)
	if err != nil {
		return 0, err
	}
	if component == nil {
		return 0, nil
	}

	return component.Total, nil
}

func (s *hppV2Service) GetBopRegularBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error) {
	return s.getExpenseComponent(projectFlockKandangId, endDate, hppV2ExpenseComponentConfig{
		Code:      hppV2ComponentBopRegular,
		Title:     "BOP Regular",
		Ekspedisi: false,
	})
}

func (s *hppV2Service) GetBopEkspedisiBreakdown(projectFlockKandangId uint, endDate *time.Time) (*HppV2Component, error) {
	return s.getExpenseComponent(projectFlockKandangId, endDate, hppV2ExpenseComponentConfig{
		Code:      hppV2ComponentBopEksp,
		Title:     "BOP Ekspedisi",
		Ekspedisi: true,
	})
}

func (s *hppV2Service) getStockUsageComponent(projectFlockKandangId uint, endDate *time.Time, config hppV2StockComponentConfig) (*HppV2Component, error) {
	if s.hppRepo == nil {
		return &HppV2Component{
			Code:  config.Code,
			Title: config.Title,
			Parts: []HppV2ComponentPart{},
		}, nil
	}

	contextRow, err := s.hppRepo.GetProjectFlockKandangContext(context.Background(), projectFlockKandangId)
	if err != nil {
		return nil, err
	}

	parts := make([]HppV2ComponentPart, 0, 4)
	total := 0.0

	growingPart, err := s.buildGrowingUsagePart(projectFlockKandangId, contextRow, endDate, config, false)
	if err != nil {
		return nil, err
	}
	if growingPart != nil {
		parts = append(parts, *growingPart)
		total += growingPart.Total
	}

	growingCutoverPart, err := s.buildGrowingUsagePart(projectFlockKandangId, contextRow, endDate, config, true)
	if err != nil {
		return nil, err
	}
	if growingCutoverPart != nil {
		parts = append(parts, *growingCutoverPart)
		total += growingCutoverPart.Total
	}

	layingNormalPart, err := s.buildLayingUsagePart(projectFlockKandangId, endDate, config, false)
	if err != nil {
		return nil, err
	}
	if layingNormalPart != nil {
		parts = append(parts, *layingNormalPart)
		total += layingNormalPart.Total
	}

	layingCutoverPart, err := s.buildLayingUsagePart(projectFlockKandangId, endDate, config, true)
	if err != nil {
		return nil, err
	}
	if layingCutoverPart != nil {
		parts = append(parts, *layingCutoverPart)
		total += layingCutoverPart.Total
	}

	return &HppV2Component{
		Code:  config.Code,
		Title: config.Title,
		Total: total,
		Parts: parts,
	}, nil
}

func (s *hppV2Service) getExpenseComponent(projectFlockKandangId uint, endDate *time.Time, config hppV2ExpenseComponentConfig) (*HppV2Component, error) {
	if s.hppRepo == nil {
		return &HppV2Component{
			Code:  config.Code,
			Title: config.Title,
			Parts: []HppV2ComponentPart{},
		}, nil
	}

	contextRow, err := s.hppRepo.GetProjectFlockKandangContext(context.Background(), projectFlockKandangId)
	if err != nil {
		return nil, err
	}

	parts := make([]HppV2ComponentPart, 0, 4)
	total := 0.0

	growingDirect, err := s.buildGrowingExpenseDirectPart(projectFlockKandangId, contextRow, endDate, config)
	if err != nil {
		return nil, err
	}
	if growingDirect != nil {
		parts = append(parts, *growingDirect)
		total += growingDirect.Total
	}

	growingFarm, err := s.buildGrowingExpenseFarmPart(projectFlockKandangId, contextRow, endDate, config)
	if err != nil {
		return nil, err
	}
	if growingFarm != nil {
		parts = append(parts, *growingFarm)
		total += growingFarm.Total
	}

	layingDirect, err := s.buildLayingExpenseDirectPart(projectFlockKandangId, endDate, config)
	if err != nil {
		return nil, err
	}
	if layingDirect != nil {
		parts = append(parts, *layingDirect)
		total += layingDirect.Total
	}

	layingFarm, err := s.buildLayingExpenseFarmPart(projectFlockKandangId, contextRow, endDate, config)
	if err != nil {
		return nil, err
	}
	if layingFarm != nil {
		parts = append(parts, *layingFarm)
		total += layingFarm.Total
	}

	return &HppV2Component{
		Code:  config.Code,
		Title: config.Title,
		Total: total,
		Parts: parts,
	}, nil
}

func (s *hppV2Service) buildGrowingUsagePart(
	projectFlockKandangId uint,
	contextRow *commonRepo.HppV2ProjectFlockKandangContext,
	endDate *time.Time,
	config hppV2StockComponentConfig,
	cutover bool,
) (*HppV2ComponentPart, error) {
	if contextRow == nil {
		return nil, nil
	}

	sourceProjectFlockID, transferTotalQty, err := s.hppRepo.GetTransferSourceSummary(context.Background(), projectFlockKandangId)
	if err != nil {
		return nil, err
	}
	if sourceProjectFlockID == 0 || transferTotalQty <= 0 {
		return nil, nil
	}

	kandangIDsGrowing, err := s.hppRepo.GetProjectFlockKandangIDs(context.Background(), sourceProjectFlockID)
	if err != nil {
		return nil, err
	}
	if len(kandangIDsGrowing) == 0 {
		return nil, nil
	}

	totalPopulationFlockGrowing, err := s.hppRepo.GetTotalPopulation(context.Background(), kandangIDsGrowing)
	if err != nil {
		return nil, err
	}
	if totalPopulationFlockGrowing == 0 {
		return nil, nil
	}

	ratio := transferTotalQty / totalPopulationFlockGrowing
	if ratio <= 0 {
		return nil, nil
	}

	partCode := hppV2PartGrowingNormal
	partTitle := "Growing"
	baseRows := make([]HppV2Reference, 0)
	baseTotal := 0.0

	if cutover {
		partCode = hppV2PartGrowingCutover
		partTitle = "Growing Cut-over"

		rows, err := s.hppRepo.ListAdjustmentCostRowsByProductFlags(context.Background(), kandangIDsGrowing, config.CutoverFlags, endDate)
		if err != nil {
			return nil, err
		}
		for _, row := range rows {
			rowTotal := adjustmentRowTotalCost(row)
			baseTotal += rowTotal
			baseRows = append(baseRows, HppV2Reference{
				Type:                  "adjustment_stock",
				ID:                    row.AdjustmentID,
				ProjectFlockKandangID: row.ProjectFlockKandangID,
				ProductID:             row.ProductID,
				ProductName:           row.ProductName,
				Date:                  row.CreatedAt.Format("2006-01-02"),
				Qty:                   row.Qty,
				UnitPrice:             row.Price,
				Total:                 rowTotal,
				AppliedTotal:          rowTotal * ratio,
			})
		}
	} else {
		rows, err := s.hppRepo.ListUsageCostRowsByProductFlags(context.Background(), kandangIDsGrowing, config.NormalFlags, endDate)
		if err != nil {
			return nil, err
		}
		for _, row := range rows {
			baseTotal += row.TotalCost
			refDate := row.LastUsedAt
			if refDate.IsZero() {
				refDate = row.FirstUsedAt
			}
			baseRows = append(baseRows, HppV2Reference{
				Type:          "stock_allocation",
				ID:            row.StockableID,
				StockableType: row.StockableType,
				ProductID:     row.SourceProductID,
				ProductName:   row.SourceProductName,
				Date:          refDate.Format("2006-01-02"),
				Qty:           row.Qty,
				UnitPrice:     row.UnitPrice,
				Total:         row.TotalCost,
				AppliedTotal:  row.TotalCost * ratio,
			})
		}
	}

	if baseTotal == 0 {
		return nil, nil
	}

	return &HppV2ComponentPart{
		Code:  partCode,
		Title: partTitle,
		Total: baseTotal * ratio,
		Proration: &HppV2Proration{
			Basis:       hppV2ProrationPopulation,
			Numerator:   transferTotalQty,
			Denominator: totalPopulationFlockGrowing,
			Ratio:       ratio,
		},
		References: baseRows,
	}, nil
}

func (s *hppV2Service) buildLayingUsagePart(
	projectFlockKandangId uint,
	endDate *time.Time,
	config hppV2StockComponentConfig,
	cutover bool,
) (*HppV2ComponentPart, error) {
	if cutover {
		rows, err := s.hppRepo.ListAdjustmentCostRowsByProductFlags(context.Background(), []uint{projectFlockKandangId}, config.CutoverFlags, endDate)
		if err != nil {
			return nil, err
		}

		total := 0.0
		references := make([]HppV2Reference, 0, len(rows))
		for _, row := range rows {
			rowTotal := adjustmentRowTotalCost(row)
			total += rowTotal
			references = append(references, HppV2Reference{
				Type:                  "adjustment_stock",
				ID:                    row.AdjustmentID,
				ProjectFlockKandangID: row.ProjectFlockKandangID,
				ProductID:             row.ProductID,
				ProductName:           row.ProductName,
				Date:                  row.CreatedAt.Format("2006-01-02"),
				Qty:                   row.Qty,
				UnitPrice:             row.Price,
				Total:                 rowTotal,
				AppliedTotal:          rowTotal,
			})
		}
		if total == 0 {
			return nil, nil
		}

		return &HppV2ComponentPart{
			Code:       hppV2PartLayingCutover,
			Title:      "Laying Cut-over",
			Total:      total,
			References: references,
		}, nil
	}

	rows, err := s.hppRepo.ListUsageCostRowsByProductFlags(context.Background(), []uint{projectFlockKandangId}, config.NormalFlags, endDate)
	if err != nil {
		return nil, err
	}

	total := 0.0
	references := make([]HppV2Reference, 0, len(rows))
	for _, row := range rows {
		total += row.TotalCost
		refDate := row.LastUsedAt
		if refDate.IsZero() {
			refDate = row.FirstUsedAt
		}
		references = append(references, HppV2Reference{
			Type:          "stock_allocation",
			ID:            row.StockableID,
			StockableType: row.StockableType,
			ProductID:     row.SourceProductID,
			ProductName:   row.SourceProductName,
			Date:          refDate.Format("2006-01-02"),
			Qty:           row.Qty,
			UnitPrice:     row.UnitPrice,
			Total:         row.TotalCost,
			AppliedTotal:  row.TotalCost,
		})
	}
	if total == 0 {
		return nil, nil
	}

	return &HppV2ComponentPart{
		Code:       hppV2PartLayingNormal,
		Title:      "Laying",
		Total:      total,
		References: references,
	}, nil
}

func (s *hppV2Service) buildGrowingExpenseDirectPart(
	projectFlockKandangId uint,
	contextRow *commonRepo.HppV2ProjectFlockKandangContext,
	endDate *time.Time,
	config hppV2ExpenseComponentConfig,
) (*HppV2ComponentPart, error) {
	return s.buildGrowingExpensePart(projectFlockKandangId, contextRow, endDate, config, false)
}

func (s *hppV2Service) buildGrowingExpenseFarmPart(
	projectFlockKandangId uint,
	contextRow *commonRepo.HppV2ProjectFlockKandangContext,
	endDate *time.Time,
	config hppV2ExpenseComponentConfig,
) (*HppV2ComponentPart, error) {
	return s.buildGrowingExpensePart(projectFlockKandangId, contextRow, endDate, config, true)
}

func (s *hppV2Service) buildGrowingExpensePart(
	projectFlockKandangId uint,
	contextRow *commonRepo.HppV2ProjectFlockKandangContext,
	endDate *time.Time,
	config hppV2ExpenseComponentConfig,
	farmLevel bool,
) (*HppV2ComponentPart, error) {
	if contextRow == nil {
		return nil, nil
	}

	sourceProjectFlockID, transferTotalQty, err := s.hppRepo.GetTransferSourceSummary(context.Background(), projectFlockKandangId)
	if err != nil {
		return nil, err
	}
	if sourceProjectFlockID == 0 || transferTotalQty <= 0 {
		return nil, nil
	}

	kandangIDsGrowing, err := s.hppRepo.GetProjectFlockKandangIDs(context.Background(), sourceProjectFlockID)
	if err != nil {
		return nil, err
	}
	if len(kandangIDsGrowing) == 0 {
		return nil, nil
	}

	totalPopulationFlockGrowing, err := s.hppRepo.GetTotalPopulation(context.Background(), kandangIDsGrowing)
	if err != nil {
		return nil, err
	}
	if totalPopulationFlockGrowing <= 0 {
		return nil, nil
	}

	ratio := transferTotalQty / totalPopulationFlockGrowing
	if ratio <= 0 {
		return nil, nil
	}

	var rows []commonRepo.HppV2ExpenseCostRow
	if farmLevel {
		rows, err = s.hppRepo.ListExpenseRealizationRowsByProjectFlockID(context.Background(), sourceProjectFlockID, endDate, config.Ekspedisi)
	} else {
		rows, err = s.hppRepo.ListExpenseRealizationRowsByProjectFlockKandangIDs(context.Background(), kandangIDsGrowing, endDate, config.Ekspedisi)
	}
	if err != nil {
		return nil, err
	}

	return buildExpensePartFromRows(
		rows,
		map[bool]string{false: hppV2PartGrowingDirect, true: hppV2PartGrowingFarm}[farmLevel],
		map[bool]string{false: "Growing Direct", true: "Growing Farm"}[farmLevel],
		&HppV2Proration{
			Basis:       hppV2ProrationPopulation,
			Numerator:   transferTotalQty,
			Denominator: totalPopulationFlockGrowing,
			Ratio:       ratio,
		},
		ratio,
	), nil
}

func (s *hppV2Service) buildLayingExpenseDirectPart(
	projectFlockKandangId uint,
	endDate *time.Time,
	config hppV2ExpenseComponentConfig,
) (*HppV2ComponentPart, error) {
	rows, err := s.hppRepo.ListExpenseRealizationRowsByProjectFlockKandangIDs(context.Background(), []uint{projectFlockKandangId}, endDate, config.Ekspedisi)
	if err != nil {
		return nil, err
	}

	return buildExpensePartFromRows(rows, hppV2PartLayingDirect, "Laying Direct", nil, 1), nil
}

func (s *hppV2Service) buildLayingExpenseFarmPart(
	projectFlockKandangId uint,
	contextRow *commonRepo.HppV2ProjectFlockKandangContext,
	endDate *time.Time,
	config hppV2ExpenseComponentConfig,
) (*HppV2ComponentPart, error) {
	if contextRow == nil {
		return nil, nil
	}

	rows, err := s.hppRepo.ListExpenseRealizationRowsByProjectFlockID(context.Background(), contextRow.ProjectFlockID, endDate, config.Ekspedisi)
	if err != nil {
		return nil, err
	}
	if len(rows) == 0 {
		return nil, nil
	}

	farmPFKIDs, err := s.hppRepo.GetProjectFlockKandangIDs(context.Background(), contextRow.ProjectFlockID)
	if err != nil {
		return nil, err
	}
	targetPieces, targetWeight, err := s.hppRepo.GetEggProduksiPiecesAndWeightKgByProjectFlockKandangIds(context.Background(), []uint{projectFlockKandangId}, endDate)
	if err != nil {
		return nil, err
	}
	farmPieces, farmWeight, err := s.hppRepo.GetEggProduksiPiecesAndWeightKgByProjectFlockKandangIds(context.Background(), farmPFKIDs, endDate)
	if err != nil {
		return nil, err
	}

	basis := hppV2ProrationEggWeight
	numerator := targetWeight
	denominator := farmWeight
	if denominator <= 0 {
		basis = hppV2ProrationEggPiece
		numerator = targetPieces
		denominator = farmPieces
	}
	if denominator <= 0 {
		return nil, nil
	}

	ratio := numerator / denominator
	if ratio <= 0 {
		return nil, nil
	}

	return buildExpensePartFromRows(
		rows,
		hppV2PartLayingFarm,
		"Laying Farm",
		&HppV2Proration{
			Basis:       basis,
			Numerator:   numerator,
			Denominator: denominator,
			Ratio:       ratio,
		},
		ratio,
	), nil
}

func (s *hppV2Service) GetHppEstimationDanRealisasi(totalProductionCost float64, projectFlockKandangId uint, startDate *time.Time, endDate *time.Time) (*HppCostResponse, error) {
	if s.hppRepo == nil {
		return &HppCostResponse{}, nil
	}

	estimPieces, estimWeightKg, err := s.hppRepo.GetEggProduksiPiecesAndWeightKgByProjectFlockKandangIds(context.Background(), []uint{projectFlockKandangId}, endDate)
	if err != nil {
		return nil, err
	}

	realPieces, realWeightKg, err := s.hppRepo.GetEggTerjualPiecesAndWeightKgByProjectFlockKandangIds(context.Background(), []uint{projectFlockKandangId}, startDate, endDate)
	if err != nil {
		return nil, err
	}

	estimation := HppCostDetail{
		Total: totalProductionCost,
		Kg:    estimWeightKg,
		Butir: estimPieces,
	}
	if estimWeightKg > 0 {
		estimation.HargaKg = roundToTwoDecimals(totalProductionCost / estimWeightKg)
	}
	if estimPieces > 0 {
		estimation.HargaButir = roundToTwoDecimals(totalProductionCost / estimPieces)
	}

	real := HppCostDetail{
		Total: totalProductionCost,
		Kg:    realWeightKg,
		Butir: realPieces,
	}
	if realWeightKg > 0 {
		real.HargaKg = roundToTwoDecimals(totalProductionCost / realWeightKg)
	}
	if realPieces > 0 {
		real.HargaButir = roundToTwoDecimals(totalProductionCost / realPieces)
	}

	return &HppCostResponse{
		Estimation: estimation,
		Real:       real,
	}, nil
}

func hppV2DayWindow(date *time.Time) (time.Time, time.Time, error) {
	if date == nil {
		now := time.Now()
		date = &now
	}

	location, err := time.LoadLocation("Asia/Jakarta")
	if err != nil {
		return time.Time{}, time.Time{}, err
	}

	startOfDay := time.Date(date.Year(), date.Month(), date.Day(), 0, 0, 0, 0, location)
	endOfDay := startOfDay.Add(24 * time.Hour)
	return startOfDay, endOfDay, nil
}

func adjustmentRowTotalCost(row commonRepo.HppV2AdjustmentCostRow) float64 {
	if row.GrandTotal > 0 {
		return row.GrandTotal
	}
	return row.Qty * row.Price
}

func buildExpensePartFromRows(
	rows []commonRepo.HppV2ExpenseCostRow,
	code string,
	title string,
	proration *HppV2Proration,
	ratio float64,
) *HppV2ComponentPart {
	if len(rows) == 0 {
		return nil
	}

	total := 0.0
	references := make([]HppV2Reference, 0, len(rows))
	for _, row := range rows {
		total += row.TotalCost * ratio
		references = append(references, HppV2Reference{
			Type:         "expense_realization",
			ID:           row.ExpenseRealizationID,
			ProductID:    row.NonstockID,
			ProductName:  row.NonstockName,
			Date:         row.RealizationDate.Format("2006-01-02"),
			Qty:          row.Qty,
			UnitPrice:    row.Price,
			Total:        row.TotalCost,
			AppliedTotal: row.TotalCost * ratio,
		})
	}
	if total == 0 {
		return nil
	}

	return &HppV2ComponentPart{
		Code:       code,
		Title:      title,
		Total:      total,
		Proration:  proration,
		References: references,
	}
}