start rmser

internal/infrastructure/repository/invoices/postgres.go

@@ -0,0 +1,52 @@
+package invoices
+
+import (
+	"time"
+
+	"rmser/internal/domain/invoices"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+type pgRepository struct {
+	db *gorm.DB
+}
+
+func NewRepository(db *gorm.DB) invoices.Repository {
+	return &pgRepository{db: db}
+}
+
+func (r *pgRepository) GetLastInvoiceDate() (*time.Time, error) {
+	var inv invoices.Invoice
+	err := r.db.Order("date_incoming DESC").First(&inv).Error
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &inv.DateIncoming, nil
+}
+
+func (r *pgRepository) SaveInvoices(list []invoices.Invoice) error {
+	return r.db.Transaction(func(tx *gorm.DB) error {
+		for _, inv := range list {
+			if err := tx.Omit("Items").Clauses(clause.OnConflict{
+				Columns:   []clause.Column{{Name: "id"}},
+				UpdateAll: true,
+			}).Create(&inv).Error; err != nil {
+				return err
+			}
+			if err := tx.Where("invoice_id = ?", inv.ID).Delete(&invoices.InvoiceItem{}).Error; err != nil {
+				return err
+			}
+			if len(inv.Items) > 0 {
+				if err := tx.Create(&inv.Items).Error; err != nil {
+					return err
+				}
+			}
+		}
+		return nil
+	})
+}