cell/source/qjs_actor.c

#include "qjs_actor.h"
#include "jsffi.h"
#include "qjs_macros.h"
#include "qjs_wota.h"
#include "cell.h"

#include <SDL3/SDL.h>
#include <stdlib.h>
#include <string.h>

// External function declarations
JSValue js_actor_delay(JSContext *js, JSValue self, int argc, JSValue *argv);
JSValue js_actor_removetimer(JSContext *js, JSValue self, int argc, JSValue *argv);

cell_rt *js2actor(JSContext *js, JSValue v)
{
  if (!JS_IsObject(v))
    return NULL;
    
  /* Check if it has __ACTORDATA__ property */
  JSValue actor_data = JS_GetPropertyStr(js, v, "__ACTORDATA__");
  if (JS_IsUndefined(actor_data)) {
    JS_FreeValue(js, actor_data);
    return NULL;
  }
  
  /* Get the id from __ACTORDATA__ */
  JSValue id_val = JS_GetPropertyStr(js, actor_data, "id");
  JS_FreeValue(js, actor_data);
  
  if (JS_IsUndefined(id_val)) {
    JS_FreeValue(js, id_val);
    return NULL;
  }
  
  const char *id = JS_ToCString(js, id_val);
  JS_FreeValue(js, id_val);
  
  if (!id)
    return NULL;
    
  /* Look up the actor by ID */
  cell_rt *actor = get_actor((char*)id);
  JS_FreeCString(js, id);
  
  return actor;
}

JSValue actor2js(JSContext *js, cell_rt *actor)
{
  if (!actor)
    return JS_NULL;
    
  /* Create the actor object */
  JSValue actor_obj = JS_NewObject(js);
  if (JS_IsException(actor_obj))
    return actor_obj;
    
  /* Create the __ACTORDATA__ object */
  JSValue actor_data = JS_NewObject(js);
  if (JS_IsException(actor_data)) {
    JS_FreeValue(js, actor_obj);
    return actor_data;
  }
  
  /* Set the id property in __ACTORDATA__ */
  JS_SetPropertyStr(js, actor_data, "id", JS_NewString(js, actor->id));
  
  /* TODO: If the actor has network info, we could add address and port here */
  /* JS_SetPropertyStr(js, actor_data, "address", JS_NewString(js, actor->address)); */
  /* JS_SetPropertyStr(js, actor_data, "port", JS_NewInt32(js, actor->port)); */
  
  /* Set __ACTORDATA__ on the actor object */
  JS_SetPropertyStr(js, actor_obj, "__ACTORDATA__", actor_data);
  
  return actor_obj;
}

JSC_CCALL(os_createactor,
  void *startup = value2wota(js, argv[0], JS_UNDEFINED);
  create_actor(startup, NULL);
)

JSC_CCALL(os_mailbox_push,
  if (argc < 2) return JS_ThrowInternalError(js, "Need an actor and a message");
  if (!JS_IsObject(argv[1])) return JS_ThrowInternalError(js, "Object to push must be an object.");

  const char *id = JS_ToCString(js, argv[0]);
  int exist = actor_exists(id);
  JS_FreeCString(js,id);
  if (!exist)
    return JS_ThrowInternalError(js, "No mailbox found for given ID");

  void *data = value2wota(js, argv[1], JS_UNDEFINED);
  
  const char *err = send_message(id, data);
  if (err) {
    free(data);
    return JS_ThrowInternalError(js, "Could not send message: %s", err);
  }
)

JSC_CCALL(os_register_actor,
  cell_rt *rt = JS_GetContextOpaque(js);
  const char *id = JS_ToCString(js, argv[0]);
  const char *err = register_actor(id, rt, JS_ToBool(js, argv[2]));
  if (err) return JS_ThrowInternalError(js, "Could not register actor: %s", err);
  rt->message_handle = JS_DupValue(js, argv[1]);
  rt->context = js;
  JS_FreeCString(js, id);
)

JSC_CCALL(os_mailbox_exist,
  const char *id = JS_ToCString(js, argv[0]);
  int exist = actor_exists(id);
  JS_FreeCString(js, id);

  return JS_NewBool(js, exist);
)

JSC_CCALL(os_unneeded,
  cell_rt *actor = JS_GetContextOpaque(js);
  SDL_LockMutex(actor->msg_mutex);
  JS_FreeValue(js, actor->unneeded);
  
  if (!JS_IsFunction(js, argv[0])) {
    actor->unneeded = JS_UNDEFINED;
    goto END;
  }
  
  actor->unneeded = JS_DupValue(js, argv[0]);
  JS_ToFloat64(js, &actor->unneeded_secs, argv[1]);

  END:
  if (actor->ar) {
    SDL_RemoveTimer(actor->ar);
    actor->ar = 0;
  }
  set_actor_state(actor);
  SDL_UnlockMutex(actor->msg_mutex);
)

JSC_CCALL(os_destroy,
  cell_rt *rt = JS_GetContextOpaque(js);
  rt->need_stop = 1;
  set_actor_state(rt);
)

JSC_SCALL(actor_setname,
  cell_rt *rt = JS_GetContextOpaque(js);
  rt->name = strdup(str);
)

static const JSCFunctionListEntry js_actor_funcs[] = {
  MIST_FUNC_DEF(os, createactor, 1),
  MIST_FUNC_DEF(os, mailbox_push, 2),
  MIST_FUNC_DEF(os, mailbox_exist, 1),
  MIST_FUNC_DEF(actor, delay, 2),
  MIST_FUNC_DEF(actor, removetimer, 1),
  MIST_FUNC_DEF(os, register_actor, 2),
  MIST_FUNC_DEF(os, unneeded, 2),
  MIST_FUNC_DEF(os, destroy, 0),
  MIST_FUNC_DEF(actor, setname, 1),
};

JSValue js_actor_use(JSContext *js) {
  JSValue mod = JS_NewObject(js);
  JS_SetPropertyFunctionList(js,mod,js_actor_funcs,countof(js_actor_funcs));
  return mod;
}