#include "message_bus/pipeline/derivation/DerivationEngine.h"

#include <QJsonArray>

namespace softbus::message_bus::pipeline::derivation
{

DerivationEngine& DerivationEngine::instance()
{
    static DerivationEngine eng;
    return eng;
}

void DerivationEngine::deriveFromEnriched(const softbus::core::models::EnrichedMessage& in,
                                          std::vector<softbus::core::models::EnrichedMessage>& outAppend) const
{
    if (!m_enabled) {
        return;
    }
    if (!in.attributes.value(QStringLiteral("sb.deriveMirror")).toBool()) {
        return;
    }
    const QString srcPoint = in.attributes.value(QStringLiteral("pointId")).toString();
    if (srcPoint.isEmpty()) {
        return;
    }
    // MVP：若存在派生后缀配置则复制一份工程值到派生点（示例约定：pointId + ".mirror"）
    const QString mirrorId = srcPoint + QStringLiteral(".mirror");
    softbus::core::models::EnrichedMessage derived;
    derived.sourceMessageId = mirrorId;
    derived.logicalName = in.logicalName + QStringLiteral(" (derived)");
    derived.unit = in.unit;
    derived.engineeringValue = in.engineeringValue;
    derived.quality = in.quality;
    derived.attributes = in.attributes;
    derived.traceLog = in.traceLog;
    derived.attributes.insert(QStringLiteral("pointId"), mirrorId);
    derived.attributes.insert(QStringLiteral("derivedFrom"), QJsonArray{srcPoint});
    derived.attributes.insert(QStringLiteral("derivationRuleId"), QStringLiteral("builtin.mirror"));
    derived.attributes.insert(QStringLiteral("derivationVersion"), QStringLiteral("1"));
    outAppend.push_back(std::move(derived));
}

} // namespace softbus::message_bus::pipeline::derivation