Implemented printer status retrieval

src/libusbwrap/interface/IUsbDevice.hpp

@@ -4,6 +4,8 @@
 
 #include <cstdint>
 #include <optional>
+#include <string>
+#include <vector>
 
 #include "libusb.h"
 #include "libusbwrap/LibUsbTypes.hpp"
@@ -22,14 +24,25 @@ enum class Speed {
 
 class IUsbDevice {
    public:
-    virtual Error open() = 0;
+    virtual bool open()  = 0;
     virtual void close() = 0;
 
+    // libusb wrappers
+    virtual bool detachKernelDriver(int interfaceNo) = 0;
+    virtual bool claimInterface(int interfaceNo)     = 0;
+    virtual bool releaseInterface(int interfaceNo)   = 0;
+    virtual bool bulkTransfer(uint8_t endpoint, std::vector<uint8_t>& data, int* tx,
+                              unsigned int timeout)  = 0;
+
     // getters
     virtual const uint16_t getVid()        = 0;
     virtual const uint16_t getPid()        = 0;
     virtual const device::Speed getSpeed() = 0;
     virtual const uint8_t getBusNumber()   = 0;
     virtual const uint8_t getPortNumber()  = 0;
+
+    // errors
+    virtual const Error getLastError()             = 0;
+    virtual const std::string getLastErrorString() = 0;
 };
 }  // namespace libusbwrap