/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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 <chrono>
#include <optional>
#include <vector>

#include <aidl/android/hardware/gnss/ElapsedRealtime.h>

#include "IDataSink.h"

namespace aidl {
namespace android {
namespace hardware {
namespace gnss {
namespace implementation {

class GnssHwListener {
public:
    explicit GnssHwListener(IDataSink& sink);
    ~GnssHwListener();

    void consume(const char* buf, size_t sz);

private:
    void consume1(char);

    bool parse(const char* begin, const char* end,
               const int64_t timestampMs,
               const ElapsedRealtime& ert);
    bool parseGPRMC(const char* begin, const char* end,
                    const int64_t timestampMs,
                    const ElapsedRealtime& ert);
    bool parseGPGGA(const char* begin, const char* end,
                    const int64_t timestampMs,
                    const ElapsedRealtime& ert);

    IDataSink&              mSink;
    std::vector<char>       mBuffer;
    std::optional<double>   mAltitude;
};

}  // namespace implementation
}  // namespace gnss
}  // namespace hardware
}  // namespace android
}  // namespace aidl