#include "dictionary.h"

#include "repl.h"

#include "user.h"

#define UNUSED(x) (void)(x)

#define ALIAS_FILE ".meeshrc"

User *user = NULL;

Dict *aliases;

Repl *repl;

// TODO: recursive alias?

// TODO: Refactor exec external command functions

void sig_handler(int sig) { // walking dead!

if (sig == SIGINT){

printf("\n");

repl->print_prompt(repl);

return;

}

if (sig == SIGCHLD){

int status;

for (int i = 0; i < user->bg_pids_count; i++) {

pid_t pid = waitpid(user->bg_pids[i], &status, WNOHANG);

if (pid > 0) {

user->remove_bg_process(user, pid);

}

}

return;

}

}

void setup() {

// load aliases

aliases = Dict__new();

user = User__new_user();

Dict__load(aliases, ALIAS_FILE);

// catch ctrl-c

signal(SIGINT, sig_handler);

signal(SIGCHLD, sig_handler);

}

void teardown() {

for (int i = 0 ; i< user->bg_pids_count; i++) {

kill(user->bg_pids[i], SIGHUP);

}

printf("\nExiting shell\n");

// save aliases

Dict__dump(aliases, ALIAS_FILE);

// free aliases

Dict__free(aliases);

user->free(user);

repl->free(repl);

}

int main() {

setup();

repl = Repl__new( user, aliases);

repl->main_loop(repl);

teardown();

return 0;

}