fsfw/src/fsfw_hal/linux/spi/ManualCsLockGuard.h

#pragma once

#include <fsfw_hal/linux/spi/SpiCookie.h>

#include "fsfw/ipc/MutexIF.h"
#include "fsfw/returnvalues/returnvalue.h"
#include "fsfw_hal/common/gpio/GpioIF.h"

class ManualCsLockWrapper {
 public:
  ManualCsLockWrapper(MutexIF* lock, GpioIF* gpioIF, SpiCookie* cookie,
                      MutexIF::TimeoutType type = MutexIF::TimeoutType::BLOCKING,
                      uint32_t timeoutMs = 0)
      : lock(lock), gpioIF(gpioIF), cookie(cookie), type(type), timeoutMs(timeoutMs) {
    if (cookie == nullptr) {
      // TODO: Error? Or maybe throw exception..
      return;
    }
    cookie->setCsLockManual(true);
    lockResult = lock->lockMutex(type, timeoutMs);
    if (lockResult != returnvalue::OK) {
      return;
    }
    gpioResult = gpioIF->pullLow(cookie->getChipSelectPin());
  }

  ~ManualCsLockWrapper() {
    if (gpioResult == returnvalue::OK) {
      gpioIF->pullHigh(cookie->getChipSelectPin());
    }
    cookie->setCsLockManual(false);
    if (lockResult == returnvalue::OK) {
      lock->unlockMutex();
    }
  }
  ReturnValue_t lockResult;
  ReturnValue_t gpioResult;

 private:
  MutexIF* lock;
  GpioIF* gpioIF;
  SpiCookie* cookie;
  MutexIF::TimeoutType type;
  uint32_t timeoutMs = 0;
};