#include "Debug/Profiler.h"
#include "Debug/Logger.h"

namespace XCEngine {
namespace Debug {

Profiler& Profiler::Get() {
    static Profiler instance;
    return instance;
}

void Profiler::Initialize() {
    if (m_initialized) {
        return;
    }
    m_initialized = true;
}

void Profiler::Shutdown() {
    m_samples.clear();
    m_profileStack.clear();
    m_initialized = false;
}

void Profiler::BeginProfile(const char* name) {
    ProfileNode node;
    node.name = name;
    node.startTime = std::chrono::duration_cast<std::chrono::microseconds>(
        std::chrono::high_resolution_clock::now().time_since_epoch()).count();
    node.threadId = static_cast<uint32_t>(std::hash<std::thread::id>{}(std::this_thread::get_id()));
    m_profileStack.push_back(node);
}

void Profiler::EndProfile() {
    if (m_profileStack.empty()) {
        return;
    }

    uint64_t endTime = std::chrono::duration_cast<std::chrono::microseconds>(
        std::chrono::high_resolution_clock::now().time_since_epoch()).count();

    ProfileNode node = m_profileStack.back();
    m_profileStack.pop_back();

    node.endTime = endTime;

    ProfileSample sample;
    sample.name = node.name;
    sample.duration = node.endTime - node.startTime;
    sample.threadId = node.threadId;
    m_samples.push_back(sample);
}

void Profiler::BeginFrame() {
    m_frameStartTime = std::chrono::duration_cast<std::chrono::microseconds>(
        std::chrono::high_resolution_clock::now().time_since_epoch()).count();
}

void Profiler::EndFrame() {
    m_samples.clear();
}

void Profiler::MarkEvent(const char* name, uint64_t timestamp, uint32_t threadId) {
}

void Profiler::SetMarker(const char* name, uint32_t color) {
}

void Profiler::ExportChromeTracing(const Containers::String& filePath) {
}

} // namespace Debug
} // namespace XCEngine