#频率与温度读取

#include <dlt698/app.hpp>
#include <dlt698/standard/catalog.hpp>
#include <iostream>

int main() {
    using namespace dlt698;
    namespace oi = standard::oi;

    const standard::DeviceLayout layout{standard::Wiring::three_phase, 4, 21};

    app::ClientOptions options;
    options.protocol.server.bytes = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
    app::Client client(options);
    auto connected = client.connect_tcp("127.0.0.1", 6980);
    if (!connected) {
        std::cerr << connected.error().context << '\n';
        return 1;
    }

    auto freq = standard::make_oad(oi::frequency, 2, 0, layout);
    auto temp = standard::make_oad(oi::internal_temperature, 2, 0, layout);
    if (!freq || !temp) {
        std::cerr << "bad layout\n";
        client.disconnect();
        return 1;
    }

    auto response = client.get_list({freq.value(), temp.value()});
    if (!response) {
        std::cerr << response.error().context << '\n';
        client.disconnect();
        return 1;
    }

    // get_list 返回完整 GetResponse：外层成功只表示传输成功，
    // 每项仍要单独判断是 DAR 还是 Data —— 这就是"部分成功"。
    const auto& attributes = response.value().attributes;
    static const char* kNames[] = {"frequency", "temperature"};
    for (std::size_t i = 0; i < attributes.size(); ++i) {
        const auto& entry = attributes[i];
        if (const auto dar = std::get_if<std::uint8_t>(&entry.result)) {
            std::cerr << kNames[i] << " unsupported, DAR=" << unsigned(*dar) << '\n';
            continue;
        }
        // 建议按回显的 OAD 决定如何解释，而不是依赖请求顺序。
        const model::Oad& oad = entry.attribute;
        const auto& data = std::get<model::Data>(entry.result);
        auto numbers = standard::engineering_values(oad, data, layout);
        if (numbers && !numbers.value().empty())
            std::cout << (oad.oi == oi::frequency ? "frequency" : "temperature") << " = "
                      << standard::decimal_text(numbers.value()[0]) << ' '
                      << standard::unit_symbol(numbers.value()[0].scaling.unit) << '\n';
    }
    // 输出：
    // frequency = 50.00 Hz
    // temperature = 35.2 ℃

    client.disconnect();
    return 0;
}

auto freq = standard::make_oad(oi::frequency, 2, 0, layout);
auto value = client.get(freq.value());

const std::string text = standard::decimal_text(numbers.value()[0]);
// "50.00" 正常；"49.98" 偏低；"50.02" 偏高

// 高温告警：> 85 ℃
// 低温告警：< -25 ℃
// 门限由应用决定，库不提供默认阈值