/*
 *
 *    Copyright (c) 2020 Project CHIP Authors
 *    Copyright (c) 2019 Google LLC.
 *    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.
 */

/**********************************************************
 * Includes
 *********************************************************/

#include "AppTask.h"
#include "AppConfig.h"
#include "AppEvent.h"
#include "BindingHandler.h"
#include "LEDWidget.h"
#include "LightSwitchMgr.h"
#ifdef DISPLAY_ENABLED
#include "lcd.h"
#ifdef QR_CODE_ENABLED
#include "qrcodegen.h"
#endif // QR_CODE_ENABLED
#endif // DISPLAY_ENABLED
#include <app/server/OnboardingCodesUtil.h>
#include <app/server/Server.h>
#include <app/util/attribute-storage.h>
#include <assert.h>
#include <lib/support/CodeUtils.h>
#include <platform/CHIPDeviceLayer.h>
#include <platform/silabs/platformAbstraction/SilabsPlatform.h>
#include <setup_payload/QRCodeSetupPayloadGenerator.h>
#include <setup_payload/SetupPayload.h>

/**********************************************************
 * Defines and Constants
 *********************************************************/

#define SYSTEM_STATE_LED &sl_led_led0

#define APP_FUNCTION_BUTTON 0
#define APP_LIGHT_SWITCH 1

namespace {
constexpr chip::EndpointId kLightSwitchEndpoint   = 1;
constexpr chip::EndpointId kGenericSwitchEndpoint = 2;
} // namespace

using namespace chip;
using namespace chip::app;
using namespace ::chip::DeviceLayer;
using namespace ::chip::DeviceLayer::Silabs;

using namespace chip::TLV;
using namespace ::chip::DeviceLayer;

/**********************************************************
 * AppTask Definitions
 *********************************************************/

AppTask AppTask::sAppTask;

CHIP_ERROR AppTask::Init()
{
    CHIP_ERROR err = CHIP_NO_ERROR;
    chip::DeviceLayer::Silabs::GetPlatform().SetButtonsCb(AppTask::ButtonEventHandler);

#ifdef DISPLAY_ENABLED
    GetLCD().Init((uint8_t *) "Light Switch");
#endif

    err = BaseApplication::Init();
    if (err != CHIP_NO_ERROR)
    {
        SILABS_LOG("BaseApplication::Init() failed");
        appError(err);
    }

    err = LightSwitchMgr::GetInstance().Init(kLightSwitchEndpoint, kGenericSwitchEndpoint);
    if (err != CHIP_NO_ERROR)
    {
        SILABS_LOG("LightSwitchMgr Init failed!");
        appError(err);
    }

    return err;
}

CHIP_ERROR AppTask::StartAppTask()
{
    return BaseApplication::StartAppTask(AppTaskMain);
}

void AppTask::AppTaskMain(void * pvParameter)
{
    AppEvent event;
    osMessageQueueId_t sAppEventQueue = *(static_cast<osMessageQueueId_t *>(pvParameter));

    CHIP_ERROR err = sAppTask.Init();
    if (err != CHIP_NO_ERROR)
    {
        SILABS_LOG("AppTask.Init() failed");
        appError(err);
    }

#if !(defined(CHIP_CONFIG_ENABLE_ICD_SERVER) && CHIP_CONFIG_ENABLE_ICD_SERVER)
    sAppTask.StartStatusLEDTimer();
#endif

    SILABS_LOG("App Task started");
    while (true)
    {
        osStatus_t eventReceived = osMessageQueueGet(sAppEventQueue, &event, NULL, osWaitForever);
        while (eventReceived == osOK)
        {
            sAppTask.DispatchEvent(&event);
            eventReceived = osMessageQueueGet(sAppEventQueue, &event, NULL, 0);
        }
    }
}

void AppTask::SwitchActionEventHandler(AppEvent * aEvent)
{
    VerifyOrReturn(aEvent->Type == AppEvent::kEventType_Button);

    static bool mCurrentButtonState = false;

    if (aEvent->ButtonEvent.Action == static_cast<uint8_t>(SilabsPlatform::ButtonAction::ButtonPressed))
    {
        mCurrentButtonState = !mCurrentButtonState;
        LightSwitchMgr::LightSwitchAction action =
            mCurrentButtonState ? LightSwitchMgr::LightSwitchAction::On : LightSwitchMgr::LightSwitchAction::Off;

        LightSwitchMgr::GetInstance().TriggerLightSwitchAction(action);
        LightSwitchMgr::GetInstance().GenericSwitchOnInitialPress();

#ifdef DISPLAY_ENABLED
        sAppTask.GetLCD().WriteDemoUI(mCurrentButtonState);
#endif
    }
    else if (aEvent->ButtonEvent.Action == static_cast<uint8_t>(SilabsPlatform::ButtonAction::ButtonReleased))
    {
        LightSwitchMgr::GetInstance().GenericSwitchOnShortRelease();
    }
}

void AppTask::ButtonEventHandler(uint8_t button, uint8_t btnAction)
{
    AppEvent button_event           = {};
    button_event.Type               = AppEvent::kEventType_Button;
    button_event.ButtonEvent.Action = btnAction;

    if (button == APP_LIGHT_SWITCH)
    {
        button_event.Handler = SwitchActionEventHandler;
        sAppTask.PostEvent(&button_event);
    }
    else if (button == APP_FUNCTION_BUTTON)
    {
        button_event.Handler = BaseApplication::ButtonHandler;
        sAppTask.PostEvent(&button_event);
    }
}