<?php

namespace app\flow\nodes;

use app\flow\DbOperationType;
use app\flow\ProcessContext;
use app\flow\VoiceMessage;

/**
 * 结束节点
 * 处理流程结束步骤
 */
class EndNode extends AbstractProcessNode
{
    /**
     * 获取节点名称
     */
    public static function getName(): string
    {
        return '结束';
    }

    /**
     * 获取节点编码
     */
    public function getCode(): string
    {
        return '结束';
    }

    /**
     * 判断当前节点是否能处理该步骤
     */
    public function canHandle(ProcessContext $context): bool
    {
        // 如果内镜未取出
        if ($context->isInStorage) {
            $context->expectedNextStep = VoiceMessage::PLEASE_SWIPE_STORAGE_OUT;
            return false;
        }

        if (!$this->isMatchReaderType($context)) {
            if ($context->currentStep === DryNode::getName() && $context->currentStep === FinalRinseNode::getName()) {
                $context->expectedNextStep = VoiceMessage::PLEASE_SWIPE_END;
            }
            return false;
        }

        // 上一个步骤必须是干燥、终末漂洗或机洗
        $validSteps = ['干燥', '终末漂洗', '机洗'];
        if ($this->isRequiredNode($context->currentStep, ['干燥', '终末漂洗', '机洗'])) {
            if ($context->currentStep === FinalRinseNode::getName()) {
                $context->expectedNextStep = VoiceMessage::PLEASE_SWIPE_WASH;
            }
            return false;
        }

        return true;
    }

    /**
     * 具体处理逻辑
     */
    protected function doHandle(ProcessContext $context): ProcessContext
    {
        // 更新步骤
        $context->currentStep = '结束';

        $context->needDatabaseOperation = true;
        $context->dbOperation = DbOperationType::INSERT;
        $context->needWebSocketNotify = true;

        return $context;
    }
}