#include "config.h"

#include "lauxlib.h"
#include "lualib.h"

int pow_open_config(pow_config *cfg, char *path) {
  int err;

  cfg->L = luaL_newstate();

  if (!cfg->L) {
    return 1;
  }

  lua_State *L = cfg->L; // just easier to access

  luaL_openlibs(L);

  err = luaL_loadfile(L, path);

  if (err) {
    return 1;
  }

  err = lua_pcall(L, 0, 1, 0);

  if (err) {
    printf("%s\n", lua_tostring(L, -1));

    return 1;
  }

  if (!lua_istable(L, -1)) {
    printf("bad config. you must return a table.\n");

    return 1;
  }

  lua_getfield(L, -1, "repos"); // this will push the entire config table to -2
                                // and push repos to -1

  if (lua_istable(L, -1)) {
    size_t repo_count = lua_rawlen(L, -1);

    for (size_t i = 1; i <= repo_count; i++) {
      lua_rawgeti(L, -1, i);

      if (lua_istable(L, -1)) {
        lua_getfield(L, -1, "path");

        if (lua_isstring(L, -1)) {
          const char *path = lua_tostring(L, -1);

          printf("%s\n", path);
        }

        lua_pop(L, 1);
      }

      lua_pop(L, 1);
    }
  }

  return 0;
}