Inicial

backend/internal/catalog/repository.go

@@ -0,0 +1,67 @@
+package catalog
+
+import (
+	"context"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type CatalogItem struct {
+	ID        string    `json:"id"`
+	Code      string    `json:"code"`
+	Name      string    `json:"name"`
+	Category  string    `json:"category"`
+	Unit      string    `json:"unit"`
+	BasePrice float64   `json:"base_price"`
+	Active    bool      `json:"active"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+func ListItems(ctx context.Context, conn *pgxpool.Conn) ([]*CatalogItem, error) {
+	rows, err := conn.Query(ctx, `
+		SELECT id, code, name, category, unit, base_price, active, created_at, updated_at
+		FROM catalog_items ORDER BY category, name`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var list []*CatalogItem
+	for rows.Next() {
+		var i CatalogItem
+		if err := rows.Scan(&i.ID, &i.Code, &i.Name, &i.Category, &i.Unit,
+			&i.BasePrice, &i.Active, &i.CreatedAt, &i.UpdatedAt); err != nil {
+			return nil, err
+		}
+		list = append(list, &i)
+	}
+	return list, rows.Err()
+}
+
+func CreateItem(ctx context.Context, conn *pgxpool.Conn, code, name, category, unit string, basePrice float64) (*CatalogItem, error) {
+	var i CatalogItem
+	err := conn.QueryRow(ctx, `
+		INSERT INTO catalog_items (code, name, category, unit, base_price)
+		VALUES ($1, $2, $3, $4, $5)
+		RETURNING id, code, name, category, unit, base_price, active, created_at, updated_at`,
+		code, name, category, unit, basePrice).
+		Scan(&i.ID, &i.Code, &i.Name, &i.Category, &i.Unit, &i.BasePrice, &i.Active, &i.CreatedAt, &i.UpdatedAt)
+	return &i, err
+}
+
+func UpdateItem(ctx context.Context, conn *pgxpool.Conn, id, code, name, category, unit string, basePrice float64, active bool) (*CatalogItem, error) {
+	var i CatalogItem
+	err := conn.QueryRow(ctx, `
+		UPDATE catalog_items SET code=$2, name=$3, category=$4, unit=$5, base_price=$6, active=$7, updated_at=NOW()
+		WHERE id=$1
+		RETURNING id, code, name, category, unit, base_price, active, created_at, updated_at`,
+		id, code, name, category, unit, basePrice, active).
+		Scan(&i.ID, &i.Code, &i.Name, &i.Category, &i.Unit, &i.BasePrice, &i.Active, &i.CreatedAt, &i.UpdatedAt)
+	return &i, err
+}
+
+func DeleteItem(ctx context.Context, conn *pgxpool.Conn, id string) error {
+	_, err := conn.Exec(ctx, `DELETE FROM catalog_items WHERE id = $1`, id)
+	return err
+}