/*
 *
 *    Copyright (c) 2021 Project CHIP Authors
 *    All rights reserved.
 *
 *    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.
 */

/**
 * @file DeviceCallbacks.cpp
 *
 * Implements all the callbacks to the application from the CHIP Stack
 *
 **/

#include "AppTask.h"

#include "DeviceCallbacks.h"
#include "LEDWidget.h"

#include <app/util/util.h>

#include <app-common/zap-generated/ids/Attributes.h>
#include <app-common/zap-generated/ids/Clusters.h>
#include <app/ConcreteAttributePath.h>
#include <lib/support/logging/CHIPLogging.h>

static const char * TAG = "light-app-callbacks";

extern LEDWidget AppLED;

using namespace chip;
using namespace chip::Inet;
using namespace chip::System;
using namespace chip::app::Clusters;

void AppDeviceCallbacks::PostAttributeChangeCallback(EndpointId endpointId, ClusterId clusterId, AttributeId attributeId,
                                                     uint8_t type, uint16_t size, uint8_t * value)
{
    ESP_LOGI(TAG, "PostAttributeChangeCallback - Cluster ID: '0x%04x', EndPoint ID: '0x%02x', Attribute ID: '0x%04x'", clusterId,
             endpointId, attributeId);

    switch (clusterId)
    {
    case OnOff::Id:
        OnOnOffPostAttributeChangeCallback(endpointId, attributeId, value);
        break;

    case LevelControl::Id:
        OnLevelControlAttributeChangeCallback(endpointId, attributeId, value);
        break;

#if CONFIG_LED_TYPE_RMT
    case ColorControl::Id:
        OnColorControlAttributeChangeCallback(endpointId, attributeId, value);
        break;
#endif

    default:
        ESP_LOGI(TAG, "Unhandled cluster ID: %d", clusterId);
        break;
    }

    ESP_LOGI(TAG, "Current free heap: %u\n", static_cast<unsigned int>(heap_caps_get_free_size(MALLOC_CAP_8BIT)));
}

void AppDeviceCallbacks::OnOnOffPostAttributeChangeCallback(EndpointId endpointId, AttributeId attributeId, uint8_t * value)
{
    VerifyOrExit(attributeId == OnOff::Attributes::OnOff::Id, ESP_LOGI(TAG, "Unhandled Attribute ID: '0x%04x", attributeId));
    VerifyOrExit(endpointId == 1, ESP_LOGE(TAG, "Unexpected EndPoint ID: `0x%02x'", endpointId));

    AppLED.Set(*value);

exit:
    return;
}

void AppDeviceCallbacks::OnLevelControlAttributeChangeCallback(EndpointId endpointId, AttributeId attributeId, uint8_t * value)
{
    VerifyOrExit(attributeId == LevelControl::Attributes::CurrentLevel::Id,
                 ESP_LOGI(TAG, "Unhandled Attribute ID: '0x%04x", attributeId));
    VerifyOrExit(endpointId == 1, ESP_LOGE(TAG, "Unexpected EndPoint ID: `0x%02x'", endpointId));

    AppLED.SetBrightness(*value);

exit:
    return;
}

// Currently ColorControl cluster is supported for ESP32C3_DEVKITM and ESP32S3_DEVKITM which have an on-board RGB-LED
#if CONFIG_LED_TYPE_RMT
void AppDeviceCallbacks::OnColorControlAttributeChangeCallback(EndpointId endpointId, AttributeId attributeId, uint8_t * value)
{
    uint8_t hue, saturation;

    VerifyOrExit(attributeId == ColorControl::Attributes::CurrentHue::Id ||
                     attributeId == ColorControl::Attributes::CurrentSaturation::Id,
                 ESP_LOGI(TAG, "Unhandled AttributeId ID: '0x%04x", attributeId));
    VerifyOrExit(endpointId == 1, ESP_LOGE(TAG, "Unexpected EndPoint ID: `0x%02x'", endpointId));

    if (attributeId == ColorControl::Attributes::CurrentHue::Id)
    {
        hue = *value;
        emberAfReadServerAttribute(endpointId, ColorControl::Id, ColorControl::Attributes::CurrentSaturation::Id, &saturation,
                                   sizeof(uint8_t));
    }
    else
    {
        saturation = *value;
        emberAfReadServerAttribute(endpointId, ColorControl::Id, ColorControl::Attributes::CurrentHue::Id, &hue, sizeof(uint8_t));
    }
    AppLED.SetColor(hue, saturation);

exit:
    return;
}
#endif // CONFIG_LED_TYPE_RMT

/** @brief OnOff Cluster Init
 *
 * This function is called when a specific cluster is initialized. It gives the
 * application an opportunity to take care of cluster initialization procedures.
 * It is called exactly once for each endpoint where cluster is present.
 *
 * @param endpoint   Ver.: always
 *
 * emberAfOnOffClusterInitCallback happens before the stack initialize the cluster
 * attributes to the default value.
 * The logic here expects something similar to the deprecated Plugins callback
 * emberAfPluginOnOffClusterServerPostInitCallback.
 *
 */
void emberAfOnOffClusterInitCallback(EndpointId endpoint)
{
    ESP_LOGI(TAG, "emberAfOnOffClusterInitCallback");
    GetAppTask().UpdateClusterState();
}