/*
 *
 *    Copyright (c) 2022 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.
 */

#pragma once

#include <lib/core/CHIPError.h>
#include <lib/core/Optional.h>
#include <platform/CommissionableDataProvider.h>
#include <stdint.h>
#include <vector>

class CommissionableDataProviderImpl : public chip::DeviceLayer::CommissionableDataProvider
{
public:
    CHIP_ERROR Initialize(chip::ByteSpan * spake2pVerifierBase64, chip::ByteSpan * spake2pSaltBase64,
                          uint32_t spake2pIterationCount, uint32_t setupPasscode, uint16_t discriminator);
    CHIP_ERROR GetSetupDiscriminator(uint16_t & setupDiscriminator) override;
    CHIP_ERROR SetSetupDiscriminator(uint16_t setupDiscriminator) override
    {
        // We don't support overriding the discriminator post-init (it is deprecated!)
        return CHIP_ERROR_NOT_IMPLEMENTED;
    }
    CHIP_ERROR GetSpake2pIterationCount(uint32_t & iterationCount) override;
    CHIP_ERROR GetSpake2pSalt(chip::MutableByteSpan & saltBuf) override;
    CHIP_ERROR GetSpake2pVerifier(chip::MutableByteSpan & verifierBuf, size_t & outVerifierLen) override;
    CHIP_ERROR GetSetupPasscode(uint32_t & setupPasscode) override;
    CHIP_ERROR SetSetupPasscode(uint32_t setupPasscode) override
    {
        // We don't support overriding the passcode post-init (it is deprecated!)
        return CHIP_ERROR_NOT_IMPLEMENTED;
    }

private:
    friend CommissionableDataProviderImpl & CommissionableDataProviderMgrImpl();
    static CommissionableDataProviderImpl sInstance;
    bool mFirstUpdated = false;
    std::vector<uint8_t> mSerializedPaseVerifier;
    std::vector<uint8_t> mPaseSalt;
    uint32_t mPaseIterationCount = 0;
    chip::Optional<uint32_t> mSetupPasscode;
    uint16_t mDiscriminator = 0;
};

inline CommissionableDataProviderImpl & CommissionableDataProviderMgrImpl()
{
    return CommissionableDataProviderImpl::sInstance;
}