package com.chinaztt.mes.warehouse.state;

import com.chinaztt.mes.warehouse.entity.ReserveMain;
import com.chinaztt.mes.warehouse.state.constant.ReserveEvents;
import com.chinaztt.mes.warehouse.state.constant.ReserveStates;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.statemachine.StateMachineContext;
import org.springframework.statemachine.StateMachinePersist;
import org.springframework.statemachine.config.EnableStateMachineFactory;
import org.springframework.statemachine.config.EnumStateMachineConfigurerAdapter;
import org.springframework.statemachine.config.builders.StateMachineConfigurationConfigurer;
import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.statemachine.persist.DefaultStateMachinePersister;
import org.springframework.statemachine.persist.StateMachinePersister;
import org.springframework.statemachine.support.DefaultStateMachineContext;

import java.util.EnumSet;

/**
 * @Author: sunxl
 * @Date: 2020-08-24 17:21
 */
@Configuration
@EnableStateMachineFactory(name = "reserveStateMachineFactory")
public class ReserveStateMachineConfig extends EnumStateMachineConfigurerAdapter<ReserveStates, ReserveEvents> {

	public final static String MACHINE_ID = "reserveStateMachine";

	@Override
	public void configure(StateMachineStateConfigurer<ReserveStates, ReserveEvents> states) throws Exception {
		states.withStates()
				.initial(ReserveStates.CREATE)
				.states(EnumSet.allOf(ReserveStates.class));
	}

	@Override
	public void configure(StateMachineTransitionConfigurer<ReserveStates, ReserveEvents> transitions) throws Exception {
		transitions
				.withExternal()
				.source(ReserveStates.CREATE).target(ReserveStates.PERFORMED)
				.event(ReserveEvents.perform)
				.and()
				.withExternal()
				.source(ReserveStates.PERFORMED).target(ReserveStates.HANDLING)
				.event(ReserveEvents.handle);
	}

	@Override
	public void configure(StateMachineConfigurationConfigurer<ReserveStates, ReserveEvents> config)
			throws Exception {
		config.withConfiguration().machineId(MACHINE_ID);
	}

	/**
	 * 持久化配置
	 *
	 * @return
	 */
	@Bean(name ="reserveMainPersister")
	public StateMachinePersister<ReserveStates, ReserveEvents, ReserveMain> persister() {
		return new DefaultStateMachinePersister<>(new StateMachinePersist<ReserveStates, ReserveEvents, ReserveMain>() {
			@Override
			public void write(StateMachineContext<ReserveStates, ReserveEvents> stateMachineContext, ReserveMain reserveMain) throws Exception {

			}

			@Override
			public StateMachineContext<ReserveStates, ReserveEvents> read(ReserveMain reserveMain) throws Exception {
				StateMachineContext<ReserveStates, ReserveEvents> result = new DefaultStateMachineContext<ReserveStates, ReserveEvents>(ReserveStates.getEnum(reserveMain.getResStatus()),
						null, null, null, null, MACHINE_ID);
				return result;
			}
		});
	}

}