#include "../api/BehaviorScript.h"
#include "../api/Script.h"
#include "../manager/ComponentManager.h"

#include "ScriptSystem.h"

using namespace std;
using namespace crepe;

void ScriptSystem::fixed_update() {
	LoopTimerManager & timer = this->mediator.loop_timer;
	duration_t delta_time = timer.get_scaled_fixed_delta_time();
	this->update(&Script::fixed_update, delta_time);
}

void ScriptSystem::frame_update() {
	LoopTimerManager & timer = this->mediator.loop_timer;
	duration_t delta_time = timer.get_delta_time();
	this->update(&Script::frame_update, delta_time);
}

void ScriptSystem::update(
	void (Script::*update_function)(duration_t), const duration_t & delta_time
) {
	ComponentManager & mgr = this->mediator.component_manager;
	RefVector<BehaviorScript> behavior_scripts = mgr.get_components_by_type<BehaviorScript>();

	for (BehaviorScript & behavior_script : behavior_scripts) {
		if (!behavior_script.active) continue;

		Script * script = behavior_script.script.get();
		if (script == nullptr) continue;

		if (!script->initialized) {
			try {
				script->init();
				script->initialized = true;
			} catch (const exception & e) {
				Log::logf(
					Log::Level::WARNING,
					"Disabled script \"{}\" due to exception in init function: {}",
					behavior_script.name, e.what()
				);
				behavior_script.active = false;
			}
		}

		try {
			(*script.*update_function)(delta_time);
		} catch (const exception & e) {
			// TODO: discern between fixed/frame update
			Log::logf(
				Log::Level::WARNING,
				"Disabled script \"{}\" due to exception in update function: {}",
				behavior_script.name, e.what()
			);
			behavior_script.active = false;
		}
	}
}