package com.chinaztt.mes.warehouse.state.joinstockorder;

import com.chinaztt.mes.warehouse.entity.JoinStockOrder;
import com.chinaztt.mes.warehouse.state.joinstockorder.constant.JoinStockOrderEvents;
import com.chinaztt.mes.warehouse.state.joinstockorder.constant.JoinStockOrderStates;
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: cxf
 * @Date: 2020-07-24 17:21
 */
@Configuration
@EnableStateMachineFactory(name = "joinStockOrderStateMachineFactory")
public class JoinStockOrderStateMachineConfig extends EnumStateMachineConfigurerAdapter<JoinStockOrderStates, JoinStockOrderEvents> {

	public final static String MACHINE_ID = "joinStockOrderStateMachine";

	@Override
	public void configure(StateMachineStateConfigurer<JoinStockOrderStates, JoinStockOrderEvents> states) throws Exception {
		states.withStates()
				.initial(JoinStockOrderStates.UNCONFIRMED)
				.states(EnumSet.allOf(JoinStockOrderStates.class));
	}

	@Override
	public void configure(StateMachineTransitionConfigurer<JoinStockOrderStates, JoinStockOrderEvents> transitions) throws Exception {
		transitions
				.withExternal()
				.source(JoinStockOrderStates.UNCONFIRMED).target(JoinStockOrderStates.CONFIRMED)
				.event(JoinStockOrderEvents.CONFIRM)
				.and()
				.withExternal()
				.source(JoinStockOrderStates.CONFIRMED).target(JoinStockOrderStates.UNCONFIRMED)
				.event(JoinStockOrderEvents.CANCEL);
	}

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

	/**
	 * 持久化配置
	 *
	 * @return
	 */
	@Bean(name = "joinStockOrderPersister")
	public StateMachinePersister<JoinStockOrderStates, JoinStockOrderEvents, JoinStockOrder> persister() {
		return new DefaultStateMachinePersister<>(new StateMachinePersist<JoinStockOrderStates, JoinStockOrderEvents, JoinStockOrder>() {
			@Override
			public void write(StateMachineContext<JoinStockOrderStates, JoinStockOrderEvents> stateMachineContext, JoinStockOrder joinStockOrder) throws Exception {

			}

			@Override
			public StateMachineContext<JoinStockOrderStates, JoinStockOrderEvents> read(JoinStockOrder joinStockOrder) throws Exception {
				StateMachineContext<JoinStockOrderStates, JoinStockOrderEvents> result =
						new DefaultStateMachineContext<JoinStockOrderStates, JoinStockOrderEvents>(JoinStockOrderStates.getEnum(joinStockOrder.getStatus()),
								null, null, null, null, MACHINE_ID);
				return result;
			}
		});
	}

}