/*
 *
 *    Copyright (c) 2021 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.
 */

#include "LightingManager.h"
#include <lib/support/logging/CHIPLogging.h>

// default initialization value for the light level after start
constexpr uint8_t kDefaultLevel = 64;

LightingManager LightingManager::sLight;

CHIP_ERROR LightingManager::Init()
{
    mState = kState_Off;
    mLevel = kDefaultLevel;

    return CHIP_NO_ERROR;
}

bool LightingManager::IsTurnedOn()
{
    return mState == kState_On;
}

uint8_t LightingManager::GetLevel()
{
    return mLevel;
}

void LightingManager::SetCallbacks(LightingCallback_fn aActionInitiated_CB, LightingCallback_fn aActionCompleted_CB)
{
    mActionInitiated_CB = aActionInitiated_CB;
    mActionCompleted_CB = aActionCompleted_CB;
}

bool LightingManager::InitiateAction(Action_t aAction, int32_t aActor, uint16_t size, uint8_t * value)
{
    bool action_initiated = false;
    State_t new_state     = kState_Off;

    switch (aAction)
    {
    case ON_ACTION:
        ChipLogProgress(NotSpecified, "LightMgr:ON: %s->ON", mState == kState_On ? "ON" : "OFF");
        break;
    case OFF_ACTION:
        ChipLogProgress(NotSpecified, "LightMgr:OFF: %s->OFF", mState == kState_On ? "ON" : "OFF");
        break;
    case LEVEL_ACTION:
        ChipLogProgress(NotSpecified, "LightMgr:LEVEL: lev:%u->%u", mLevel, *value);
        break;
    default:
        ChipLogProgress(NotSpecified, "LightMgr:Unknown");
        break;
    }

    // Initiate On/Off Action only when the previous one is complete.
    if (mState == kState_Off && aAction == ON_ACTION)
    {
        action_initiated = true;
        new_state        = kState_On;
    }
    else if (mState == kState_On && aAction == OFF_ACTION)
    {
        action_initiated = true;
        new_state        = kState_Off;
    }
    else if (aAction == LEVEL_ACTION && *value != mLevel)
    {
        action_initiated = true;
        if (*value == 0)
        {
            new_state = kState_Off;
        }
        else
        {
            new_state = kState_On;
        }
    }
    if (aAction == LEVEL_ACTION)
    {
        SetLevel(*value);
    }
    else
    {
        Set(new_state == kState_On);
    }
    if (action_initiated)
    {
        if (mActionInitiated_CB)
        {
            mActionInitiated_CB(aAction);
        }

        if (mActionCompleted_CB)
        {
            mActionCompleted_CB(aAction);
        }
    }

    return action_initiated;
}

void LightingManager::SetLevel(uint8_t aLevel)
{
    mLevel = aLevel;

    UpdateLight();
}

void LightingManager::Set(bool aOn)
{
    if (aOn)
    {
        mState = kState_On;
    }
    else
    {
        mState = kState_Off;
    }
    UpdateLight();
}

void LightingManager::UpdateLight() {}