/*
 * SPDX-FileCopyrightText: 2004 Copyright contributors to the cppTango project
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */

#ifndef TANGO_SERVER_DEVICE_3IMPL_H
#define TANGO_SERVER_DEVICE_3IMPL_H

#include <tango/common/tango_const.h>
#include <tango/server/Device_2Impl.h>

#include <memory>
#include <string>

namespace Tango
{

class DeviceClass;
class AttributeValueList_4;

//=============================================================================
//
//            The Device_3Impl class
//
//
// description :    This class is derived directly from the Tango::Device_skel
//            class generated by CORBA. It represents the CORBA
//            servant which will be accessed by the client.
//            It implements all the methods
//            and attributes defined in the IDL interface for Device.
//
//=============================================================================

struct AttIdx
{
    long idx_in_names;
    long idx_in_multi_attr;
    bool failed;
};

/**
 * Base class for all TANGO device since version 3.
 *
 * This class inherits from DeviceImpl class which itself inherits from
 * CORBA classes where all the network layer is implemented.
 * This class has been created since release 3 of Tango library where the IDL
 * Tango module has been modified in order to create a Device_3 interface
 * which inherits from the original Device interface
 *
 *
 * @headerfile tango.h
 * @ingroup Server
 */

// NOLINTNEXTLINE(readability-identifier-naming)
class Device_3Impl : public virtual POA_Tango::Device_3, public Device_2Impl
{
  public:
    /**@name Constructors
     * Miscellaneous constructors */
    //@{
    /**
     * Constructs a newly allocated Device_3Impl object from its name.
     *
     * The device description field is set to <i>A Tango device</i>. The device
     * state is set to unknown and the device status is set to
     * <b>Not Initialised</b>
     *
     * @param     device_class    Pointer to the device class object
     * @param    dev_name    The device name
     *
     */
    Device_3Impl(DeviceClass *device_class, const std::string &dev_name);

    /**
     * Constructs a newly allocated Device_3Impl object from its name and its description.
     *
     * The device
     * state is set to unknown and the device status is set to
     * <i>Not Initialised</i>
     *
     * @param     device_class    Pointer to the device class object
     * @param    dev_name    The device name
     * @param    desc    The device description
     *
     */
    Device_3Impl(DeviceClass *device_class, const std::string &dev_name, const std::string &desc);

    /**
     * Constructs a newly allocated Device_3Impl object from all its creation
     * parameters.
     *
     * The device is constructed from its name, its description, an original state
     * and status
     *
     * @param     device_class    Pointer to the device class object
     * @param    dev_name    The device name
     * @param    desc         The device description
     * @param    dev_state     The device initial state
     * @param    dev_status    The device initial status
     *
     */
    Device_3Impl(DeviceClass *device_class,
                 const std::string &dev_name,
                 const std::string &desc,
                 Tango::DevState dev_state,
                 const std::string &dev_status);

    /**
     * Constructs a newly allocated Device_3Impl object from all its creation
     * parameters with some default values.
     *
     * The device is constructed from its name, its description, an original state
     * and status. This constructor defined default values for the description,
     * state and status parameters. The default device description is <i>A TANGO device</i>.
     * The default device state is <i>UNKNOWN</i> and the default device status
     * is <i>Not initialised</i>.
     *
     * @param     device_class    Pointer to the device class object
     * @param    dev_name    The device name
     * @param    desc    The device desc
     * @param    dev_state     The device initial state
     * @param    dev_status    The device initial status
     *
     */
    Device_3Impl(DeviceClass *device_class,
                 const char *dev_name,
                 const char *desc = "A TANGO device",
                 Tango::DevState dev_state = Tango::UNKNOWN,
                 const char *dev_status = StatusNotSet);

    //@}

    /**@name Destructor
     * Only one desctructor is defined for this class */
    //@{
    /**
     * The device desctructor.
     */
    ~Device_3Impl() override { }

    //@}

    /**@name CORBA operation methods
     * Method defined to implement TANGO device CORBA operation */
    //@{

    /**
     * Read attribute(s) value.
     *
     * Invoked when the client request the read_attributes_2 CORBA operation.
     * It returns to the client one AttributeValue structure for each wanted
     * attribute.
     *
     * @param names The attribute(s) name list
     * @param source The data source. This parameter is new in Tango release 2. It
     * allows a client to choose the data source between the device itself or the
     * data cache for polled attribute.
     * @return A sequence of AttributeValue structure. One structure is initialised
     * for each wanted attribute with the attribute value, the date and the attribute
     * value quality. Click <a
     * href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#structs">here</a> to read
     * <b>AttributeValue_3</b> structure definition.
     * @exception DevFailed Thrown if the attribute does not exist.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#exceptions">here</a>
     * to read <b>DevFailed</b> exception specification
     */
    Tango::AttributeValueList_3 *read_attributes_3(const Tango::DevVarStringArray &names,
                                                   Tango::DevSource source) override;

    /**
     * Write attribute(s) value.
     *
     * Invoked when the client request the write_attributes CORBA operation.
     * It sets the attribute(s) with the new value(s) passed as parameter.
     *
     * @param values The attribute(s) new value(s). One structure is initialised
     * for each wanted attribute with the attribute value. The attribute quality and
     * date are not used by this method.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#structs">here</a>
     * to read <b>AttributeValue</b> structure definition.
     * @exception DevFailed Thrown if the command does not exist.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#exceptions">here</a>
     * to read <b>DevFailed</b> exception specification
     */
    void write_attributes_3(const Tango::AttributeValueList &values) override;

    /**
     * Read attribute value history.
     *
     * Invoked when the client request the read_attribute_history_3 CORBA operation.
     * This operation allows a client to retrieve attribute value history for
     * polled attribute. The depth of the history is limited to the depth of
     * the device server internal polling buffer.
     * It returns to the client one DevAttrHistory structure for each record.
     *
     * @param name The attribute name
     * @param n The record number.
     * @return A sequence of DevAttrHistory structure. One structure is initialised
     * for each record with the attribute value, the date and in case of the attribute
     * returns an error when it was read, the DevErrors data.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#structs">here</a>
     * to read <b>DevAttrHistory_3</b> structure definition.
     * @exception DevFailed Thrown if the attribute does not exist or is not polled.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#exceptions">here</a>
     * to read <b>DevFailed</b> exception specification
     */
    Tango::DevAttrHistoryList_3 *read_attribute_history_3(const char *name, CORBA::Long n) override;

    /**
     * Get device info.
     *
     * Invoked when the client request the info CORBA operation.
     * It updates the black box and returns a DevInfo object
     * with miscellaneous device info
     *
     * @return A DevInfo object
     */
    Tango::DevInfo_3 *info_3() override;

    /**
     * Get attribute(s) configuration.
     *
     * Invoked when the client request the get_attribute_config_3 CORBA operation.
     * It returns to the client one AttributeConfig_3 structure for each wanted
     * attribute. All the attribute properties value are returned in this
     * AttributeConfig_3 structure. Since Tango release 3, the attribute event
     * related, the attribute warning alarm and attribute rds alarm properties
     * have been added to the returned structures.
     *
     * @param names The attribute(s) name list
     * @return A sequence of AttributeConfig_3 structure. One structure is initialised
     * for each wanted attribute. Click <a
     * href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#structs">here</a> to read
     * <b>AttributeConfig_3</b> structure specification.
     *
     * @exception DevFailed Thrown if the attribute does not exist.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#exceptions">here</a>
     * to read <b>DevFailed</b> exception specification
     */
    Tango::AttributeConfigList_3 *get_attribute_config_3(const Tango::DevVarStringArray &names) override;

    /**
     * Set attribute(s) configuration.
     *
     * Invoked when the client request the set_attribute_config_3 CORBA operation.
     * It updates the device attribute configuration actually used by the device but
     * this method also updates the Tango database. One structure of the
     * AttributeConfig_3 type is needed for each attribute to update configuration.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#structs">here</a>
     * to read <b>AttributeConfig_3</b> structure specification.
     *
     * @param new_conf The attribute(s) new configuration structure sequence
     * @exception DevFailed Thrown if the command does not exist.
     * Click <a href="https://tango-controls.readthedocs.io/en/latest/development/advanced/IDL.html#exceptions">here</a>
     * to read <b>DevFailed</b> exception specification
     */
    void set_attribute_config_3(const Tango::AttributeConfigList_3 &new_conf) override;
    //@}

    /// @privatesection
    void write_attributes_in_db(const std::vector<long> &, const std::vector<long> &);
    void add_state_status_attrs();
    void read_attributes_from_cache(const Tango::DevVarStringArray &, Tango::AttributeIdlData &);

    void delete_dev()
    {
        ext_3->delete_dev();
    }

    void get_attr_props(const char *, std::vector<AttrProperty> &);

  protected:
    /// @privatesection
    void read_attributes_no_except(const Tango::DevVarStringArray &,
                                   Tango::AttributeIdlData &,
                                   bool,
                                   std::vector<long> &);
    void write_attributes_in_db(const std::vector<long> &, const std::vector<AttIdx> &);
    void add_alarmed(std::vector<long> &);
    void state2attr(Tango::DevState, Tango::AttributeValue_3 &);
    void state2attr(Tango::DevState, Tango::AttributeValue_4 &);
    void state2attr(Tango::DevState, Tango::AttributeValue_5 &);
    void status2attr(Tango::ConstDevString, Tango::AttributeValue_3 &);
    void status2attr(Tango::ConstDevString, Tango::AttributeValue_4 &);
    void status2attr(Tango::ConstDevString, Tango::AttributeValue_5 &);
    void alarmed_not_read(const std::vector<AttIdx> &);

    void write_attributes_34(const Tango::AttributeValueList *, const Tango::AttributeValueList_4 *);

    void set_attribute_config_3_local(const Tango::AttributeConfigList_3 &, bool, int);
    void set_attribute_config_3_local(const Tango::AttributeConfigList_5 &, bool, int);

  private:
    class Device_3ImplExt
    {
      public:
        Device_3ImplExt() { }

        virtual ~Device_3ImplExt() { }

        virtual void delete_dev() { }
    };

    void real_ctor();

    std::unique_ptr<Device_3ImplExt> ext_3; // Class extension
};

} // namespace Tango

#endif // _DEVICE_H
