/*
 *
 *    Copyright (c) 2020 Project CHIP Authors
 *
 *    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
 *          Provides an implementation of the ThreadStackManager object.
 *
 */
/* this file behaves like a config.h, comes first */
#include <platform/CHIPDeviceEvent.h>
#include <platform/internal/CHIPDeviceLayerInternal.h>

#include <platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.cpp>

#include <lib/support/CHIPPlatformMemory.h>
#include <openthread-system.h>
#include <wiced_platform.h>

namespace chip {
namespace DeviceLayer {

using namespace ::chip::DeviceLayer::Internal;

ThreadStackManagerImpl ThreadStackManagerImpl::sInstance;

CHIP_ERROR ThreadStackManagerImpl::_InitThreadStack()
{
    CHIP_ERROR err = CHIP_NO_ERROR;
    wiced_result_t result;

    mThread = wiced_rtos_create_thread();
    VerifyOrExit(mThread != nullptr, err = CHIP_ERROR_NO_MEMORY);

    mMutex = wiced_rtos_create_mutex();
    VerifyOrExit(mMutex != nullptr, err = CHIP_ERROR_NO_MEMORY);

    result = wiced_rtos_init_mutex(mMutex);
    VerifyOrExit(result == WICED_SUCCESS, err = CHIP_ERROR_INTERNAL);
    otSysInit(0, NULL);

    err = GenericThreadStackManagerImpl_OpenThread<ThreadStackManagerImpl>::DoInit(NULL);

exit:
    return err;
}

CHIP_ERROR ThreadStackManagerImpl::_StartThreadTask()
{
    CHIP_ERROR err = CHIP_NO_ERROR;
    wiced_result_t result;

    result = wiced_rtos_init_thread(mThread, CHIP_DEVICE_CONFIG_THREAD_TASK_PRIORITY, CHIP_DEVICE_CONFIG_THREAD_TASK_NAME,
                                    ThreadTaskMain, CHIP_DEVICE_CONFIG_THREAD_TASK_STACK_SIZE, this);
    VerifyOrExit(result == WICED_SUCCESS, err = CHIP_ERROR_NO_MEMORY);

exit:
    return err;
}

void ThreadStackManagerImpl::_LockThreadStack()
{
    const wiced_result_t result = wiced_rtos_lock_mutex(mMutex);
    VerifyOrReturn(result == WICED_SUCCESS, ChipLogError(DeviceLayer, "%s %x", __func__, result));
}

void ThreadStackManagerImpl::_UnlockThreadStack()
{
    const wiced_result_t result = wiced_rtos_unlock_mutex(mMutex);
    VerifyOrReturn(result == WICED_SUCCESS || result == WICED_NOT_OWNED, ChipLogError(DeviceLayer, "%s %x", __func__, result));
}

void ThreadStackManagerImpl::ThreadTaskMain(void)
{
    while (true)
    {
        LockThreadStack();
        ProcessThreadActivity();
        UnlockThreadStack();
    }
}

void ThreadStackManagerImpl::ThreadTaskMain(uint32_t arg)
{
    ChipLogDetail(DeviceLayer, "Thread task running");
    reinterpret_cast<ThreadStackManagerImpl *>(arg)->ThreadTaskMain();
}

} // namespace DeviceLayer
} // namespace chip

extern "C" void * otPlatCAlloc(size_t aNum, size_t aSize)
{
    return CHIPPlatformMemoryCalloc(aNum, aSize);
}

extern "C" void otPlatFree(void * aPtr)
{
    CHIPPlatformMemoryFree(aPtr);
}