feat: creat main products query

app/repos/currencyRepo/currencyRepo.go

@@ -0,0 +1,53 @@
+package currencyRepo
+
+import (
+	"git.ma-al.com/goc_daniel/b2b/app/db"
+	"git.ma-al.com/goc_daniel/b2b/app/model"
+	"git.ma-al.com/goc_daniel/b2b/app/utils/query/filters"
+	"git.ma-al.com/goc_daniel/b2b/app/utils/query/find"
+)
+
+type UICurrencyRepo interface {
+	CreateConversionRate(currencyRate *model.CurrencyRate) error
+	Get(id uint) (*model.Currency, error)
+}
+
+type CurrencyRepo struct{}
+
+func New() UICurrencyRepo {
+	return &CurrencyRepo{}
+}
+
+func (repo *CurrencyRepo) CreateConversionRate(currencyRate *model.CurrencyRate) error {
+	return db.DB.Debug().Create(currencyRate).Error
+}
+
+func (repo *CurrencyRepo) Get(id uint) (*model.Currency, error) {
+	var currency model.Currency
+
+	err := db.DB.Table("b2b_currencies c").
+		Select("c.*, r.conversion_rate").
+		Joins(`
+		LEFT JOIN b2b_currency_rates r 
+		ON r.b2b_id_currency = c.id 
+		AND r.created_at = (
+			SELECT MAX(created_at) 
+			FROM b2b_currency_rates 
+			WHERE b2b_id_currency = c.id
+		)
+	`).
+		Where("c.id = ?", id).
+		Scan(&currency).Error
+
+	return &currency, err
+}
+
+func (repo *CurrencyRepo) Find(langId uint, p find.Paging, filt *filters.FiltersList) (*find.Found[model.Currency], error) {
+
+	found, err := find.Paginate[model.Currency](langId, p, db.DB.
+		Model(&model.Currency{}).
+		Scopes(filt.All()...),
+	)
+
+	return &found, err
+}