package cn.iocoder.yudao.module.bpm.service.attach;

import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.module.bpm.controller.admin.attach.vo.attach.BpmBusinessAttachPageReqVO;
import cn.iocoder.yudao.module.bpm.controller.admin.attach.vo.attach.BpmBusinessAttachSaveReqVO;
import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.process.BpmProcessDefinitionRespVO;
import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmBusinessAttachDO;
import cn.iocoder.yudao.module.bpm.dal.mysql.attach.BpmBusinessAttachMapper;
import cn.iocoder.yudao.module.bpm.enums.definition.BpmModelFormTypeEnum;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.validation.annotation.Validated;

import java.util.Objects;

import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.BUSINESS_ATTACH_NOT_EXISTS;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.BUSINESS_ATTACH_PROCESS_DEFINITION_KEY_DUPLICATE;

/**
 * BPM 业务附件配置 Service 实现类
 *
 * @author 超级管理员
 */
@Service
@Validated
public class BpmBusinessAttachServiceImpl implements BpmBusinessAttachService {

    @Resource
    private BpmBusinessAttachMapper businessAttachMapper;

    @Override
    public Long createBusinessAttach(BpmBusinessAttachSaveReqVO createReqVO) {
        // 校验流程定义 Key 唯一
        validateProcessDefinitionKeyUnique(createReqVO);
        // 插入
        BpmBusinessAttachDO attach = BeanUtils.toBean(createReqVO, BpmBusinessAttachDO.class);
        businessAttachMapper.insert(attach);
        return attach.getId();
    }

    @Override
    public void updateBusinessAttach(BpmBusinessAttachSaveReqVO updateReqVO) {
        // 校验存在
        validateBusinessAttachExists(updateReqVO.getId());
        // 校验流程定义 Key 唯一
        validateProcessDefinitionKeyUnique(updateReqVO);
        // 更新
        BpmBusinessAttachDO updateObj = BeanUtils.toBean(updateReqVO, BpmBusinessAttachDO.class);
        businessAttachMapper.updateById(updateObj);
    }

    private void validateProcessDefinitionKeyUnique(BpmBusinessAttachSaveReqVO reqVO) {
        BpmBusinessAttachDO attach = businessAttachMapper.selectByProcessDefinitionKey(reqVO.getProcessDefinitionKey());
        if (attach == null || ObjUtil.equal(attach.getId(), reqVO.getId())) {
            return;
        }
        throw exception(BUSINESS_ATTACH_PROCESS_DEFINITION_KEY_DUPLICATE, reqVO.getProcessDefinitionKey());
    }

    @Override
    public void deleteBusinessAttach(Long id) {
        // 校验存在
        validateBusinessAttachExists(id);
        // 删除
        businessAttachMapper.deleteById(id);
    }

    private BpmBusinessAttachDO validateBusinessAttachExists(Long id) {
        BpmBusinessAttachDO attach = businessAttachMapper.selectById(id);
        if (attach == null) {
            throw exception(BUSINESS_ATTACH_NOT_EXISTS);
        }
        return attach;
    }

    @Override
    public BpmBusinessAttachDO getBusinessAttach(Long id) {
        return businessAttachMapper.selectById(id);
    }

    @Override
    public PageResult<BpmBusinessAttachDO> getBusinessAttachPage(BpmBusinessAttachPageReqVO pageReqVO) {
        return businessAttachMapper.selectPage(pageReqVO);
    }

    @Override
    public BpmBusinessAttachDO getBusinessAttachByProcessDefinitionKey(String processDefinitionKey) {
        return businessAttachMapper.selectByProcessDefinitionKey(processDefinitionKey);
    }

    @Override
    public void fillBusinessForm(BpmProcessDefinitionRespVO definitionResp, String processDefinitionKey, String businessKey) {
        // 未发起 / 无业务主键：不注入
        if (definitionResp == null || StrUtil.isBlank(businessKey)) {
            return;
        }
        // 非 NORMAL 流程表单（已手动配置 CUSTOM）：不覆盖
        if (!Objects.equals(definitionResp.getFormType(), BpmModelFormTypeEnum.NORMAL.getType())) {
            return;
        }
        // 未命中配置 / 配置被禁用：保持原样
        BpmBusinessAttachDO attach = getBusinessAttachByProcessDefinitionKey(processDefinitionKey);
        if (attach == null || !Objects.equals(attach.getStatus(), CommonStatusEnum.ENABLE.getStatus())) {
            return;
        }
        // 覆盖为 CUSTOM，注入业务详情组件路径
        definitionResp.setFormType(BpmModelFormTypeEnum.CUSTOM.getType());
        definitionResp.setFormCustomViewPath(attach.getComponentPath());
        // 清空普通表单字段：详情页 CUSTOM 分支不读；打印页按 formFields.length == 0 判断渲染业务组件
        definitionResp.setFormFields(null);
        definitionResp.setFormConf(null);
    }

}