package cn.iocoder.yudao.module.system.service.appearance;
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import cn.hutool.core.collection.CollUtil;
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import cn.iocoder.yudao.module.system.controller.admin.appearance.vo.SystemAppearanceRespVO;
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import cn.iocoder.yudao.module.system.controller.admin.appearance.vo.SystemAppearanceSaveReqVO;
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import cn.iocoder.yudao.module.system.controller.admin.storage.vo.SystemStorageAttachmentListReqVO;
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import cn.iocoder.yudao.module.system.controller.admin.storage.vo.SystemStorageAttachmentSaveReqVO;
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import cn.iocoder.yudao.module.system.controller.admin.storage.vo.SystemStorageBlobRespVO;
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import cn.iocoder.yudao.module.system.enums.storage.StorageApplicationTypeEnum;
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import cn.iocoder.yudao.module.system.enums.storage.StorageRecordTypeEnum;
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import cn.iocoder.yudao.module.system.service.storage.SystemStorageAttachmentService;
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import cn.iocoder.yudao.module.system.util.storage.StorageFileUtil;
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import jakarta.annotation.Resource;
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import org.springframework.stereotype.Service;
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import java.math.BigDecimal;
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import java.util.Collections;
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import java.util.List;
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/**
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* 系统外观 Service 实现类
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*
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* @author 超级管理员
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*/
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@Service
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public class SystemAppearanceServiceImpl implements SystemAppearanceService {
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/**
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* 系统外观固定记录编号：外观是全局唯一配置，用一条附件记录承载
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*/
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private static final Long RECORD_ID = 1L;
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@Resource
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private SystemStorageAttachmentService storageAttachmentService;
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@Resource
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private StorageFileUtil storageFileUtil;
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@Override
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public SystemAppearanceRespVO getAppearance() {
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SystemAppearanceRespVO respVO = new SystemAppearanceRespVO();
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SystemStorageBlobRespVO logo = getSingleBlob(StorageApplicationTypeEnum.LOGO);
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if (logo != null) {
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respVO.setLogoBlobId(logo.getId());
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respVO.setLogoUrl(buildPermanentUrl(logo));
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}
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SystemStorageBlobRespVO background = getSingleBlob(StorageApplicationTypeEnum.LOGIN_BACKGROUND);
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if (background != null) {
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respVO.setLoginBackgroundBlobId(background.getId());
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respVO.setLoginBackgroundUrl(buildPermanentUrl(background));
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}
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return respVO;
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}
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@Override
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public void saveAppearance(SystemAppearanceSaveReqVO reqVO) {
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saveBlob(StorageApplicationTypeEnum.LOGO, reqVO.getLogoBlobId());
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saveBlob(StorageApplicationTypeEnum.LOGIN_BACKGROUND, reqVO.getLoginBackgroundBlobId());
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}
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private SystemStorageBlobRespVO getSingleBlob(StorageApplicationTypeEnum application) {
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SystemStorageAttachmentListReqVO reqVO = new SystemStorageAttachmentListReqVO();
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reqVO.setApplication(application.getType());
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reqVO.setRecordType(StorageRecordTypeEnum.SYSTEM_APPEARANCE.getType());
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reqVO.setRecordId(RECORD_ID);
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List<SystemStorageBlobRespVO> blobs = storageAttachmentService.listAttachments(reqVO);
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return CollUtil.isEmpty(blobs) ? null : blobs.get(0);
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}
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/**
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* 外观图需要登录前就能访问，因此使用永久公开地址
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*/
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private String buildPermanentUrl(SystemStorageBlobRespVO blob) {
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return storageFileUtil.buildSignedUrl(blob, "/preview/", BigDecimal.valueOf(-1));
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}
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private void saveBlob(StorageApplicationTypeEnum application, Long blobId) {
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SystemStorageAttachmentSaveReqVO reqVO = new SystemStorageAttachmentSaveReqVO();
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reqVO.setApplication(application.getType());
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reqVO.setRecordType(StorageRecordTypeEnum.SYSTEM_APPEARANCE.getType());
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reqVO.setRecordId(RECORD_ID);
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reqVO.setBlobItems(blobId == null
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? Collections.emptyList()
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: Collections.singletonList(buildBlobItem(blobId, application)));
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storageAttachmentService.bindAttachments(reqVO);
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}
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private SystemStorageAttachmentSaveReqVO.BlobItem buildBlobItem(Long blobId, StorageApplicationTypeEnum application) {
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SystemStorageAttachmentSaveReqVO.BlobItem item = new SystemStorageAttachmentSaveReqVO.BlobItem();
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item.setBlobId(blobId);
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item.setApplication(application.getType());
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return item;
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}
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}
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