#pragma once

#include <chrono>
#include <ratio>
#include <iostream>
#include <string>
#include <unordered_map>
#include <stack>

namespace ServerProfiler {
    using clock = std::chrono::high_resolution_clock;

    struct Entry {
        std::string name;
        clock::time_point start;
    };

    static std::stack<Entry> stack;
    static std::unordered_map<std::string, double> times;

    inline void push(const std::string& name) {
        stack.push({name, clock::now()});
    }

    inline void pop() {
        auto end = clock::now();
        auto e = stack.top();
        stack.pop();

        double dt = std::chrono::duration<double, std::micro>(end - e.start).count();
        times[e.name] += dt;
    }

    inline void popPush(const std::string& name) {
        pop(); push(name);
    }

    inline void report() {
        for (auto& it : times) {
            std::cout << "[PROFILER] " << it.first << ": " << it.second << std::endl;
        }
    }
};