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/*******************************************************************************
* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of Maxim Integrated
* Products, Inc. shall not be used except as stated in the Maxim Integrated
* Products, Inc. Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
* trademarks, maskwork rights, or any other form of intellectual
* property whatsoever. Maxim Integrated Products, Inc. retains all
* ownership rights.
*******************************************************************************/

#pragma once

#include <string>
#include <MaximInterface/Devices/DS9400.hpp>
#include <MaximInterface/Links/I2CMasterDecorator.hpp>
#include <MaximInterface/Links/OneWireMasterDecorator.hpp>
#include <MaximInterface/Utilities/Export.h>
#include "MoveOnly.hpp"
#include "OneWireLinkLayerMaster.hpp"
#include "Uart.hpp"

namespace MaximInterface {

/// DS9481P-300 USB to 1-Wire and I2C adapter.
class DS9481P_300 : private MoveOnly {
public:
  enum ErrorValue { ConnectionStateError = 1 };

  MaximInterface_EXPORT DS9481P_300();
  MaximInterface_EXPORT ~DS9481P_300();

  DS9481P_300(DS9481P_300 &&) = default;
  DS9481P_300 & operator=(DS9481P_300 &&) = default;

  /// Access the 1-Wire master when connected to an adapter.
  OneWireMaster & oneWireMaster() { return oneWireMaster_; }
  
  /// Access the I2C master when connected to an adapter.
  I2CMaster & i2cMaster() { return i2cMaster_; }

  /// Connect to an adapter on the specified COM port.
  MaximInterface_EXPORT error_code connect(const std::string & portName);
  
  /// Disconnect from the adapter on the current COM port.
  MaximInterface_EXPORT void disconnect();

  /// Check if currently connected to an adapter.
  /// @returns True if connected.
  bool connected() const { return currentBus != Bus::None; }
  
  /// Get the currently connected COM port name.
  MaximInterface_EXPORT std::string portName() const;

  MaximInterface_EXPORT static const error_category & errorCategory();

private:
  class OneWireMasterImpl : public OneWireMasterDecorator {
  public:
    explicit OneWireMasterImpl(DS9481P_300 & parent)
        : OneWireMasterDecorator(parent.linkLayerMaster), parent(&parent) {}

    virtual error_code reset() override;
    virtual error_code touchBitSetLevel(bool & sendRecvBit,
                                        Level afterLevel) override;
    virtual error_code writeByteSetLevel(uint_least8_t sendByte,
                                         Level afterLevel) override;
    virtual error_code readByteSetLevel(uint_least8_t & recvByte,
                                        Level afterLevel) override;
    virtual error_code writeBlock(const uint_least8_t * sendBuf,
                                  size_t sendLen) override;
    virtual error_code readBlock(uint_least8_t * recvBuf,
                                 size_t recvLen) override;
    virtual error_code setSpeed(Speed newSpeed) override;
    virtual error_code setLevel(Level newLevel) override;
    virtual error_code triplet(TripletData & data) override;

  private:
    DS9481P_300 * parent;

    template <typename Func> error_code selectAndExecute(Func operation);
  };

  class I2CMasterImpl : public I2CMasterDecorator {
  public:
    explicit I2CMasterImpl(DS9481P_300 & parent) noexcept
        : I2CMasterDecorator(parent.ds9400), parent(&parent) {}

    virtual error_code start(uint_least8_t address) override;
    virtual error_code stop() override;
    virtual error_code writeByte(uint_least8_t data) override;
    virtual error_code writeBlock(const uint_least8_t * data,
                                  size_t dataLen) override;
    virtual error_code writePacket(uint_least8_t address,
                                   const uint_least8_t * data, size_t dataLen,
                                   bool sendStop) override;
    virtual error_code readByte(AckStatus status,
                                uint_least8_t & data) override;
    virtual error_code readBlock(AckStatus status, uint_least8_t * data,
                                 size_t dataLen) override;
    virtual error_code readPacket(uint_least8_t address, uint_least8_t * data,
                                  size_t dataLen, bool sendStop) override;

  private:
    DS9481P_300 * parent;

    template <typename Func> error_code selectAndExecute(Func operation);
  };

  enum class Bus { None, OneWire, I2C };

  Bus currentBus;
  OneWireLinkLayerMaster linkLayerMaster;
  OneWireMasterImpl oneWireMaster_;
  dotnet::Uart serial;
  DS9400 ds9400;
  I2CMasterImpl i2cMaster_;

  error_code selectBus(Bus newBus);
  error_code selectBus(Bus newBus, const std::string & portName);
};

inline error_code make_error_code(DS9481P_300::ErrorValue e) {
  return error_code(e, DS9481P_300::errorCategory());
}

} // namespace MaximInterface