[FEAT/BE] wiring recording,transfer_stock,transfer_laying,marketing for consumer chick in project flock population

internal/common/service/fifo_stock_v2/population_allocation.go

@@ -0,0 +1,131 @@
+package fifo_stock_v2
+
+import (
+	"context"
+	"errors"
+	"math"
+	"sort"
+
+	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils/fifo"
+
+	"github.com/gofiber/fiber/v2"
+	"gorm.io/gorm"
+)
+
+func ReleasePopulationConsumptionByUsable(
+	ctx context.Context,
+	tx *gorm.DB,
+	usableType string,
+	usableID uint,
+) error {
+	if tx == nil {
+		return errors.New("transaction is required")
+	}
+	if usableType == "" || usableID == 0 {
+		return errors.New("usable type and id are required")
+	}
+
+	stockAllocationRepo := commonRepo.NewStockAllocationRepository(tx)
+	allocations, err := stockAllocationRepo.FindActiveByUsable(ctx, usableType, usableID, nil)
+	if err != nil {
+		return err
+	}
+
+	for _, allocation := range allocations {
+		if allocation.StockableType != fifo.StockableKeyProjectFlockPopulation.String() || allocation.StockableId == 0 || allocation.Qty <= 0 {
+			continue
+		}
+		if err := tx.WithContext(ctx).
+			Model(&entity.ProjectFlockPopulation{}).
+			Where("id = ?", allocation.StockableId).
+			Update("total_used_qty", gorm.Expr("GREATEST(total_used_qty - ?, 0)", allocation.Qty)).Error; err != nil {
+			return err
+		}
+	}
+
+	return stockAllocationRepo.ReleaseByUsable(ctx, usableType, usableID, nil, nil)
+}
+
+func AllocatePopulationConsumption(
+	ctx context.Context,
+	tx *gorm.DB,
+	populations []entity.ProjectFlockPopulation,
+	productWarehouseID uint,
+	usableType string,
+	usableID uint,
+	consumeQty float64,
+) error {
+	if consumeQty <= 0 {
+		return nil
+	}
+	if tx == nil {
+		return errors.New("transaction is required")
+	}
+	if productWarehouseID == 0 {
+		return fiber.NewError(fiber.StatusBadRequest, "Product warehouse tidak valid")
+	}
+	if usableType == "" || usableID == 0 {
+		return errors.New("usable type and id are required")
+	}
+	if len(populations) == 0 {
+		return fiber.NewError(fiber.StatusBadRequest, "Populasi tidak ditemukan")
+	}
+
+	if err := ReleasePopulationConsumptionByUsable(ctx, tx, usableType, usableID); err != nil {
+		return err
+	}
+
+	sort.Slice(populations, func(i, j int) bool {
+		if populations[i].CreatedAt.Equal(populations[j].CreatedAt) {
+			return populations[i].Id < populations[j].Id
+		}
+		return populations[i].CreatedAt.Before(populations[j].CreatedAt)
+	})
+
+	stockAllocationRepo := commonRepo.NewStockAllocationRepository(tx)
+	remaining := consumeQty
+	for _, pop := range populations {
+		available := pop.TotalQty - pop.TotalUsedQty
+		if available <= 0 {
+			continue
+		}
+		portion := math.Min(available, remaining)
+		if portion <= 0 {
+			continue
+		}
+
+		allocation := &entity.StockAllocation{
+			ProductWarehouseId: productWarehouseID,
+			StockableType:      fifo.StockableKeyProjectFlockPopulation.String(),
+			StockableId:        pop.Id,
+			UsableType:         usableType,
+			UsableId:           usableID,
+			Qty:                portion,
+			Status:             entity.StockAllocationStatusActive,
+			AllocationPurpose:  entity.StockAllocationPurposeConsume,
+		}
+		if err := stockAllocationRepo.CreateOne(ctx, allocation, nil); err != nil {
+			return err
+		}
+
+		if err := tx.WithContext(ctx).
+			Model(&entity.ProjectFlockPopulation{}).
+			Where("id = ?", pop.Id).
+			Update("total_used_qty", gorm.Expr("total_used_qty + ?", portion)).Error; err != nil {
+			return err
+		}
+
+		remaining -= portion
+		if remaining <= 1e-6 {
+			break
+		}
+	}
+
+	if remaining > 1e-6 {
+		return fiber.NewError(fiber.StatusBadRequest, "Populasi tidak mencukupi")
+	}
+
+	return nil
+}