#include <lauxlib.h>
#include <lua.h>
#include <lualib.h>
#include <stdbool.h>

struct EscConfig {
    int   maxspeed;
    float odometer;
    bool  started;
};

static struct EscConfig esc_config = {
    .maxspeed = 100,
    .odometer = 12.5f,
    .started = false,
};

/* Lua: get_esc_config() -> table */
static int l_get_esc_config(lua_State *L) {
    lua_newtable(L);

    lua_pushstring(L, "maxspeed");
    lua_pushinteger(L, esc_config.maxspeed);
    lua_settable(L, -3);

    lua_pushstring(L, "odometer");
    lua_pushnumber(L, esc_config.odometer);
    lua_settable(L, -3);

    lua_pushstring(L, "started");
    lua_pushboolean(L, esc_config.started);
    lua_settable(L, -3);

    return 1; // return the table
}

/* Lua: set_maxspeed(value) */
static int l_set_maxspeed(lua_State *L) {
    int maxspeed = luaL_checkinteger(L, 1);
    esc_config.maxspeed = maxspeed;
    return 0;
}

/* Lua: set_started(value) */
static int l_set_started(lua_State *L) {
    int started = lua_toboolean(L, 1);
    esc_config.started = started;
    return 0;
}

/* Lua: add_odometer(delta) */
static int l_add_odometer(lua_State *L) {
    float delta = luaL_checknumber(L, 1);
    esc_config.odometer += delta;
    return 0;
}

static const struct luaL_Reg esc_funcs[] = {
    {"get_esc_config", l_get_esc_config},
    {"set_maxspeed", l_set_maxspeed},
    {"set_started", l_set_started},
    {"add_odometer", l_add_odometer},
    {NULL, NULL},
};

/* Register the functions into Lua as global "esc" */
void register_esc(lua_State *L) {
    luaL_newlib(L, esc_funcs); // create table with all funcs
    lua_setglobal(L, "esc");   // set global "esc"
}