#include "all.h"
#include "str.h"
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

int main(void) {
  str input = {0};
  str_append_fread(&input, stdin);

  // Run the lexer to get tokens (honestly useless considering the simplicity of
  // BF)
  lexer_t lexer = lex_init(&input);
  lex_run(&lexer);

  // Run the parser and turn tokens into an AST representation
  parser_t p = parser_init(&lexer);
  ast_node_t *ast = parse_program(&p);
  str c_code = gen_code(ast);

  // Run gcc
  int fd[2];
  pipe(fd);

  if (fork() == 0) {
    dup2(fd[0], STDIN_FILENO);
    close(fd[0]);
    close(fd[1]);

    char *argv[] = {"gcc",       "-Os",
                    "-flto",     "-fuse-linker-plugin",
                    "-DNDEBUG",  "-fomit-frame-pointer",
                    "-nostdlib", "-nostartfiles",
                    "-no-pie",   "-fno-stack-protector",
                    "-o",        "/proc/self/fd/1",
                    "-x",        "c",
                    "-",         NULL};

    execvp("gcc", argv);
    perror("execvp");
    _exit(1);
  }

  // Cleanup
  close(fd[0]);
  write(fd[1], c_code.data, strlen(c_code.data));
  close(fd[1]);
  wait(NULL);

  ast_free(ast);
  free_str(&input);
  return 0;
}