#include <lib94/lib94.hpp>
#include <fstream>
#include <cstdio>
#include <mpi.h>

void head_main(int comm_size, int warrior_count, const lib94::warrior *const *warriors);

void worker_main(const lib94::warrior *const *warriors);

const lib94::warrior *load_warrior(const char *file) {
  std::ifstream stream(file);
  if (!stream) {
    fprintf(stderr, "could not open %s\n", file);
    exit(1);
  }

  std::string source(std::istreambuf_iterator<char>(stream), {});

  auto w = lib94::compile_warrior(source);

  if (std::holds_alternative<std::string>(w)) {
    fprintf(stderr, "error compiling %s: %s\n", file, std::get<std::string>(w).c_str());
    exit(1);
  }

  return std::get<lib94::warrior *>(w);
}

int main(int argc, char **argv) {
  MPI_Init(&argc, &argv);

  int comm_rank, comm_size;
  MPI_Comm_rank(MPI_COMM_WORLD, &comm_rank);
  MPI_Comm_size(MPI_COMM_WORLD, &comm_size);

  const lib94::warrior **warriors = new const lib94::warrior *[argc - 1];
  for (int i = 0; i < argc - 1; ++i)
    warriors[i] = load_warrior(argv[i + 1]);

  if (comm_rank == 0)
    head_main(comm_size, argc - 1, warriors);
  else
    worker_main(warriors);

  MPI_Finalize();
}