feat: add cabinet management functionality

internal/mapper/cabinet_mapper.go

@@ -0,0 +1,43 @@
+package mapper
+
+import (
+	"wm-backend/internal/models"
+	db "wm-backend/sqlc_gen"
+
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+func ToDomainCabinet(r db.Cabinet) *models.Cabinet {
+	return &models.Cabinet{
+		ID:          r.ID,
+		RoomID:      r.RoomID,
+		Name:        r.Name,
+		Description: r.Description.String,
+		CreatedAt:   r.CreatedAt,
+		UpdatedAt:   r.UpdatedAt,
+	}
+}
+
+func ToModelCabinet(r *models.Cabinet) *db.CreateCabinetParams {
+	return &db.CreateCabinetParams{
+		RoomID: r.RoomID,
+		Name:   r.Name,
+		Description: pgtype.Text{
+			String: r.Description,
+			Valid:  r.Description != "",
+		},
+		CreatedAt: r.CreatedAt,
+	}
+}
+
+func ToUpdateModelCabinet(r *models.Cabinet) *db.UpdateCabinetParams {
+	return &db.UpdateCabinetParams{
+		Name: r.Name,
+		Description: pgtype.Text{
+			String: r.Description,
+			Valid:  r.Description != "",
+		},
+		UpdatedAt: r.UpdatedAt,
+		ID:        r.ID,
+	}
+}