#功率读取

standard::phase_oad(oi::active_power, standard::Phase::total, layout); // 2004/2/1
standard::phase_oad(oi::active_power, standard::Phase::a, layout);     // 2004/2/2

#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;
    }

    // 有功功率整体数组：总量 + A/B/C
    auto oad = standard::make_oad(oi::active_power, 2, 0, layout);
    if (!oad) {
        std::cerr << oad.error().context << '\n';
        client.disconnect();
        return 1;
    }

    auto value = client.get(oad.value());
    if (!value) {
        std::cerr << value.error().context << '\n';
        client.disconnect();
        return 1;
    }
    if (const auto dar = std::get_if<std::uint8_t>(&value.value())) {
        std::cerr << "meter does not provide active power, DAR=" << unsigned(*dar) << '\n';
        client.disconnect();
        return 1;
    }

    const auto& data = std::get<model::Data>(value.value());
    auto numbers = standard::engineering_values(oad.value(), data, layout);
    if (!numbers) {
        std::cerr << numbers.error().context << '\n';
        client.disconnect();
        return 1;
    }
    static const char* kLabels[] = {"total", "A", "B", "C"};
    for (std::size_t i = 0; i < numbers.value().size(); ++i)
        std::cout << "active power " << kLabels[i] << " = "
                  << standard::decimal_text(numbers.value()[i]) << ' '
                  << standard::unit_symbol(numbers.value()[i].scaling.unit) << '\n';
    // 输出：
    // active power total = 6000.0 W
    // active power A = 2010.0 W
    // active power B = 1990.0 W
    // active power C = 2000.0 W

    client.disconnect();
    return 0;
}

auto active   = standard::make_oad(oi::active_power, 2, 0, layout);
auto reactive = standard::make_oad(oi::reactive_power, 2, 0, layout);
auto apparent = standard::make_oad(oi::apparent_power, 2, 0, layout);

auto result = client.get_list({active.value(), reactive.value(), apparent.value()});

auto a = standard::phase_oad(oi::reactive_power, standard::Phase::a, layout); // 2005/2/2

// 有功 2010.0 W、视在 6500.0 VA → 2010/6500 ≈ 0.309
// 设备直接读出的 200A 才是权威值，两者不一致说明设备配置或倍率有差异