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

#pragma once

#include <credentials/DeviceAttestationCredsProvider.h>
#include <crypto/CHIPCryptoPAL.h>
#include <platform/CommissionableDataProvider.h>
#include <platform/DeviceInstanceInfoProvider.h>

namespace chip {
namespace DeviceLayer {

class FactoryDataProvider : public CommissionableDataProvider,
                            public chip::Credentials::DeviceAttestationCredentialsProvider,
                            public DeviceInstanceInfoProvider
{
public:
    CHIP_ERROR Init();

    // ===== Members functions that implement the CommissionableDataProvider
    CHIP_ERROR GetSetupDiscriminator(uint16_t & setupDiscriminator);
    CHIP_ERROR SetSetupDiscriminator(uint16_t setupDiscriminator);
    CHIP_ERROR GetSpake2pIterationCount(uint32_t & iterationCount);
    CHIP_ERROR GetSpake2pSalt(MutableByteSpan & saltBuf);
    CHIP_ERROR GetSpake2pVerifier(MutableByteSpan & verifierBuf, size_t & outVerifierLen);
    CHIP_ERROR GetSetupPasscode(uint32_t & setupPasscode);
    CHIP_ERROR SetSetupPasscode(uint32_t setupPasscode);

    // ===== Members functions that implement the DeviceAttestationCredentialsProvider
    CHIP_ERROR GetCertificationDeclaration(MutableByteSpan & out_cd_buffer) override;
    CHIP_ERROR GetFirmwareInformation(MutableByteSpan & out_firmware_info_buffer) override;
    CHIP_ERROR GetDeviceAttestationCert(MutableByteSpan & out_dac_buffer) override;
    CHIP_ERROR GetProductAttestationIntermediateCert(MutableByteSpan & out_pai_buffer) override;
    CHIP_ERROR SignWithDeviceAttestationKey(const ByteSpan & message_to_sign, MutableByteSpan & out_signature_buffer) override;

    // ===== Members functions that implement the DeviceInstanceInfoProvider
    CHIP_ERROR GetVendorName(char * buf, size_t bufSize) override;
    CHIP_ERROR GetVendorId(uint16_t & vendorId) override;
    CHIP_ERROR GetProductName(char * buf, size_t bufSize) override;
    CHIP_ERROR GetProductId(uint16_t & productId) override;
    CHIP_ERROR GetPartNumber(char * buf, size_t bufSize) override;
    CHIP_ERROR GetProductURL(char * buf, size_t bufSize) override;
    CHIP_ERROR GetProductLabel(char * buf, size_t bufSize) override;
    CHIP_ERROR GetSerialNumber(char * buf, size_t bufSize) override;
    CHIP_ERROR GetManufacturingDate(uint16_t & year, uint8_t & month, uint8_t & day) override;
    CHIP_ERROR GetHardwareVersion(uint16_t & hardwareVersion) override;
    CHIP_ERROR GetHardwareVersionString(char * buf, size_t bufSize) override;
    CHIP_ERROR GetRotatingDeviceIdUniqueId(MutableByteSpan & uniqueIdSpan) override;

private:
    CHIP_ERROR GetDeviceAttestationCertKey(MutableByteSpan & out_key_buffer);
    CHIP_ERROR LoadKeypairFromDer(const ByteSpan & der_buffer, Crypto::P256Keypair & keypair);
};

} // namespace DeviceLayer
} // namespace chip