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// ----------------------------------------------------------------------------
// Copyright 2016-2017 ARM Ltd.
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ----------------------------------------------------------------------------

#include "mbed-cloud-client/MbedCloudClientConfig.h"
#include "mbed-cloud-client/MbedCloudClient.h"
#include "mbed-cloud-client/SimpleM2MResource.h"

#include "mbed-trace/mbed_trace.h"
#ifndef MBED_CONF_MBED_CLOUD_CLIENT_DISABLE_CERTIFICATE_ENROLLMENT
#include "CertificateEnrollmentClient.h"
#endif // MBED_CONF_MBED_CLOUD_CLIENT_DISABLE_CERTIFICATE_ENROLLMENT

#include <assert.h>

#define xstr(s) str(s)
#define str(s) #s

#define TRACE_GROUP "mClt"

MbedCloudClient::MbedCloudClient()
:_client(*this),
 _value_callback(NULL),
 _error_description(NULL)
{
}

MbedCloudClient::~MbedCloudClient()
{
    _object_list.clear();
}

void MbedCloudClient::add_objects(const M2MObjectList& object_list)
{
    if(!object_list.empty()) {
        M2MObjectList::const_iterator it;
        it = object_list.begin();
        for (; it!= object_list.end(); it++) {
            _object_list.push_back((M2MBase*)*it);
        }
    }
}

void MbedCloudClient::add_objects(const M2MBaseList& base_list)
{
    if(!base_list.empty()) {
        M2MBaseList::const_iterator it;
        it = base_list.begin();
        for (; it!= base_list.end(); it++) {
            _object_list.push_back(*it);
        }
    }
}

void MbedCloudClient::remove_object(M2MBase *object)
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    M2MBaseList::const_iterator it;
    int found_index = -1;
    int index;
    tr_debug("MbedCloudClient::remove_object %p", object);
    for (it = _object_list.begin(), index = 0; it != _object_list.end(); it++, index++) {
        if(*it == object) {
            found_index = index;
            break;
        }
    }
    if (found_index != -1) {
        tr_debug("  object found at index %d", found_index);
        _object_list.erase(found_index);
        if (success) {
            _client.connector_client().m2m_interface()->remove_object(object);
        }
    }
}

void MbedCloudClient::set_update_callback(MbedCloudClientCallback *callback)
{
    _value_callback = callback;
}

bool MbedCloudClient::setup(void* iface)
{
    tr_debug("MbedCloudClient setup()");

    // Add objects to list
#if MBED_CLOUD_CLIENT_STL_API
    map<string, M2MObject*>::iterator it;
    for (it = _objects.begin(); it != _objects.end(); it++)
    {
        _object_list.push_back((M2MBase*)it->second);
    }
#endif

    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        // set the network interface to M2MInterface
        _client.connector_client().m2m_interface()->set_platform_network_handler(iface);
        _client.initialize_and_register(_object_list);
    }
    return success;
}

void MbedCloudClient::on_registered(void(*fn)(void))
{
    FP0<void> fp(fn);
    _on_registered = fp;
}


void MbedCloudClient::on_error(void(*fn)(int))
{
    _on_error = fn;
}


void MbedCloudClient::on_unregistered(void(*fn)(void))
{
    FP0<void> fp(fn);
    _on_unregistered = fp;
}

void MbedCloudClient::on_registration_updated(void(*fn)(void))
{
    FP0<void> fp(fn);
    _on_registration_updated = fp;
}

void MbedCloudClient::keep_alive()
{
    _client.connector_client().update_registration();
}

void MbedCloudClient::register_update()
{
    _client.connector_client().update_registration();
}

void MbedCloudClient::close()
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->unregister_object(NULL);
    }
}

const ConnectorClientEndpointInfo *MbedCloudClient::endpoint_info() const
{
    return _client.connector_client().endpoint_info();
}

void MbedCloudClient::set_queue_sleep_handler(callback_handler handler)
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->set_queue_sleep_handler(handler);
    }
}

void MbedCloudClient::set_random_number_callback(random_number_cb callback)
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->set_random_number_callback(callback);
    }
}

void MbedCloudClient::set_entropy_callback(entropy_cb callback)
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->set_entropy_callback(callback);
    }
}

#if MBED_CLOUD_CLIENT_STL_API
bool MbedCloudClient::set_device_resource_value(M2MDevice::DeviceResource resource,
                                                const std::string &value)
{
    return _client.set_device_resource_value(resource, value);
}

void MbedCloudClient::register_update_callback(string route,
                                               SimpleM2MResourceBase* resource)
{
    _update_values[route] = resource;
}
#endif // MBED_CLOUD_CLIENT_STL_API

#ifdef MBED_CLOUD_CLIENT_SUPPORT_UPDATE
void MbedCloudClient::set_update_authorize_handler(void (*handler)(int32_t request))
{
    _client.set_update_authorize_handler(handler);
}

void MbedCloudClient::set_update_progress_handler(void (*handler)(uint32_t progress, uint32_t total))
{
    _client.set_update_progress_handler(handler);
}

void MbedCloudClient::update_authorize(int32_t request)
{
    _client.update_authorize(request);
}
#endif

const char *MbedCloudClient::error_description() const
{
    return _error_description;
}


void MbedCloudClient::complete(ServiceClientCallbackStatus status)
{
    tr_info("MbedCloudClient::complete status (%d)", status);
    if (status == Service_Client_Status_Registered) {
        _on_registered.call();
    } else if (status == Service_Client_Status_Unregistered) {
        _object_list.clear();
        _on_unregistered.call();
    } else if (status == Service_Client_Status_Register_Updated) {
        _on_registration_updated.call();
    }
}

void MbedCloudClient::error(int error, const char *reason)
{
    tr_error("MbedCloudClient::error code (%d)", error);
    _error_description = reason;
    _on_error(error);
}

void MbedCloudClient::value_updated(M2MBase *base, M2MBase::BaseType type)
{
    if (base) {
        tr_info("MbedCloudClient::value_updated path %s", base->uri_path());
        if (base->uri_path()) {
#if MBED_CLOUD_CLIENT_STL_API
            if (_update_values.count(base->uri_path()) != 0) {
                tr_debug("MbedCloudClient::value_updated calling update() for %s", base->uri_path());
                _update_values[base->uri_path()]->update();
            } else
#endif
            {
                // way to tell application that there is a value update
                if (_value_callback) {
                    _value_callback->value_updated(base, type);
                }
            }
        }
    }
}

void MbedCloudClient::send_get_request(DownloadType type,
                                       const char *uri,
                                       const size_t offset,
                                       get_data_cb data_cb,
                                       get_data_error_cb error_cb,
                                       void *context)
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->get_data_request(type,
                                                                    uri,
                                                                    offset,
                                                                    true,
                                                                    data_cb,
                                                                    error_cb,
                                                                    context);
    }
}

#ifndef MBED_CONF_MBED_CLOUD_CLIENT_DISABLE_CERTIFICATE_ENROLLMENT
ce_status_e MbedCloudClient::certificate_renew(const char *cert_name)
{
    return CertificateEnrollmentClient::certificate_renew(cert_name);
}

void MbedCloudClient::on_certificate_renewal(cert_renewal_cb_f user_cb)
{
    CertificateEnrollmentClient::on_certificate_renewal(user_cb);
}
#endif // MBED_CONF_MBED_CLOUD_CLIENT_DISABLE_CERTIFICATE_ENROLLMENT

#ifdef MBED_CLOUD_CLIENT_EDGE_EXTENSION
const M2MBaseList* MbedCloudClient::get_object_list() const
{
    return &_object_list;
}
#endif // MBED_CLOUD_CLIENT_EDGE_EXTENSION

void MbedCloudClient::pause()
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->pause();
    }
}

void MbedCloudClient::resume(void *iface)
{
    // finish the ServiceClient's initialization and M2MInterface
    bool success = _client.connector_client().setup();

    if (success) {
        _client.connector_client().m2m_interface()->resume(iface, _object_list);
    }
}