#include "exports.hpp"
#include "graph.hpp"
#include "graph_powerlaw.hpp"
#include "graph_spectrum.hpp"
#include "histogram.hpp"
#include "switchchain.hpp"
#include <algorithm>
#include <fstream>
#include <iostream>
#include <numeric>
#include <random>
#include <vector>

int main(int argc, char* argv[]) {
    // Simulation parameters
    const int numVerticesMin = 1000;
    const int numVerticesMax = 1000;
    const int numVerticesStep = 1000;

    float tauValues[] = {2.1f, 2.3f, 2.5f, 2.7f, 2.9f};

    auto getMeasurements = [](int n, float tau) {
        (void)n;
        (void)tau;
        return 50000;
    };

    // Output file
    std::ofstream outfile;
    if (argc >= 2)
        outfile.open(argv[1]);
    else
        outfile.open("graphdata_canonical_timeevol.m");
    if (!outfile.is_open()) {
        std::cout << "ERROR: Could not open output file.\n";
        return 1;
    }

    // Output Mathematica-style comment to indicate file contents
    outfile << "(*\n";
    outfile << "n from " << numVerticesMin << " to " << numVerticesMax
            << " step " << numVerticesStep << std::endl;
    outfile << "tauValues: " << tauValues << std::endl;
    outfile << "Canonical degree sequence.\n";
    outfile << "10 runs per starting point.\n";
    outfile << "Measurements: 50000\n";
    outfile << "data:\n";
    outfile << "1: {n,tau}\n";
    outfile << "2: {triangles}\n";
    outfile << "*)" << std::endl;

    // Mathematica does not accept normal scientific notation
    outfile << std::fixed;
    outfile << '{' << '\n';
    bool outputComma = false;

    SwitchChain chain;
    Graph g;
    for (int numVertices = numVerticesMin; numVertices <= numVerticesMax;
         numVertices += numVerticesStep) {
        for (float tau : tauValues) {
            DegreeSequence ds;
            generateCanonicalPowerlawGraph(numVertices, tau, g, ds);

            std::cout << "Running (n,tau) = (" << numVertices << ',' << tau
                      << "). " << std::flush;

            for (int j = 0; j < 10; ++j) {
                std::vector<int> triangles;
                chain.initialize(g, true);
                int measurements = getMeasurements(numVertices, tau);
                for (int i = 0; i < measurements; ++i) {
                    chain.doMove(true);
                    triangles.push_back(chain.g.getTrackedTriangles());
                }

                if (outputComma)
                    outfile << ',' << '\n';
                outputComma = true;
                outfile << '{' << '{' << numVertices << ',' << tau << '}';
                outfile << ',' << triangles;
                outfile << '}' << std::flush;
            }
            std::cout << std::endl;
        }
    }
    outfile << '\n' << '}';
    return 0;
}