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/**
* MinIO 工具函数使用示例
* 这个文件展示了如何使用 minio.ts 中的各种函数
*/
import {
uploadFile,
getFileUrl,
deleteFile,
listFiles,
generateUniqueFileName,
validateFileType,
validateFileSize,
downloadFile,
fileExists,
getFileInfo,
} from './minio';
// ========================================
// 1. 上传文件示例
// ========================================
/**
* 上传用户头像
*/
async function uploadAvatar(file: File, userId: string) {
// 验证文件类型
const allowedTypes = ['jpg', 'jpeg', 'png', 'gif', 'webp'];
if (!validateFileType(file.name, allowedTypes)) {
throw new Error('不支持的图片格式');
}
// 验证文件大小(5MB)
const maxSize = 5 * 1024 * 1024;
if (!validateFileSize(file.size, maxSize)) {
throw new Error('文件大小超过限制(最大5MB)');
}
// 生成唯一文件名,存储在 avatars 目录下
const path = generateUniqueFileName(file.name, `avatars/${userId}`);
// 上传文件
const url = await uploadFile(file, path, {
'Content-Type': file.type,
'User-Id': userId,
});
return { url, path };
}
/**
* 上传文章封面图
*/
async function uploadPostCover(file: File, postId: string) {
const allowedTypes = ['jpg', 'jpeg', 'png', 'webp'];
if (!validateFileType(file.name, allowedTypes)) {
throw new Error('不支持的图片格式');
}
const maxSize = 10 * 1024 * 1024; // 10MB
if (!validateFileSize(file.size, maxSize)) {
throw new Error('文件大小超过限制(最大10MB)');
}
// 按日期组织文件
const date = new Date();
const year = date.getFullYear();
const month = String(date.getMonth() + 1).padStart(2, '0');
const path = generateUniqueFileName(
file.name,
`posts/${year}/${month}/covers`
);
const url = await uploadFile(file, path);
return { url, path };
}
/**
* 上传文章内容中的图片
*/
async function uploadPostImage(file: File, postId: string) {
const allowedTypes = ['jpg', 'jpeg', 'png', 'gif', 'webp'];
if (!validateFileType(file.name, allowedTypes)) {
throw new Error('不支持的图片格式');
}
const maxSize = 5 * 1024 * 1024; // 5MB
if (!validateFileSize(file.size, maxSize)) {
throw new Error('文件大小超过限制(最大5MB)');
}
const date = new Date();
const year = date.getFullYear();
const month = String(date.getMonth() + 1).padStart(2, '0');
const path = generateUniqueFileName(
file.name,
`posts/${year}/${month}/images`
);
const url = await uploadFile(file, path);
return { url, path };
}
// ========================================
// 2. 获取文件URL示例
// ========================================
/**
* 获取文件的公共访问URL
*/
function getPublicFileUrl(path: string) {
return getFileUrl(path);
}
// ========================================
// 3. 删除文件示例
// ========================================
/**
* 删除用户头像(更换头像时)
*/
async function deleteAvatar(avatarPath: string) {
try {
await deleteFile(avatarPath);
console.log('头像删除成功');
} catch (error) {
console.error('删除头像失败:', error);
throw error;
}
}
/**
* 删除文章时,删除相关的所有图片
*/
async function deletePostImages(postId: string) {
try {
// 列出文章相关的所有图片
const files = await listFiles(`posts/`, true);
// 过滤出该文章的图片(根据实际情况调整逻辑)
const postFiles = files.filter(file =>
file.name?.includes(postId)
);
// 批量删除
const paths = postFiles.map(f => f.name).filter((name): name is string => !!name);
if (paths.length > 0) {
const { deleteFiles } = await import('./minio');
await deleteFiles(paths);
console.log(`删除了 ${paths.length} 个文件`);
}
} catch (error) {
console.error('删除文章图片失败:', error);
throw error;
}
}
// ========================================
// 4. 列出文件示例
// ========================================
/**
* 获取用户的所有头像历史
*/
async function getUserAvatars(userId: string) {
try {
const files = await listFiles(`avatars/${userId}/`, false);
return files.map(file => ({
name: file.name,
size: file.size,
lastModified: file.lastModified,
url: file.name ? getFileUrl(file.name) : null,
}));
} catch (error) {
console.error('获取用户头像列表失败:', error);
throw error;
}
}
/**
* 获取某月的所有文章封面
*/
async function getPostCoversByMonth(year: number, month: number) {
try {
const monthStr = String(month).padStart(2, '0');
const files = await listFiles(`posts/${year}/${monthStr}/covers/`, false);
return files.map(file => ({
name: file.name,
size: file.size,
url: file.name ? getFileUrl(file.name) : null,
}));
} catch (error) {
console.error('获取封面列表失败:', error);
throw error;
}
}
// ========================================
// 5. 检查文件是否存在
// ========================================
/**
* 检查头像是否存在
*/
async function checkAvatarExists(avatarPath: string): Promise<boolean> {
return await fileExists(avatarPath);
}
// ========================================
// 6. 获取文件信息
// ========================================
/**
* 获取文件详细信息
*/
async function getFileDetails(path: string) {
try {
const info = await getFileInfo(path);
return {
size: info.size,
lastModified: info.lastModified,
etag: info.etag,
contentType: info.metaData?.['content-type'],
};
} catch (error) {
console.error('获取文件信息失败:', error);
throw error;
}
}
// ========================================
// 7. 下载文件示例
// ========================================
/**
* 下载文件到本地
*/
async function downloadFileToBuffer(path: string): Promise<Buffer> {
try {
return await downloadFile(path);
} catch (error) {
console.error('下载文件失败:', error);
throw error;
}
}
// ========================================
// 8. 在 API Route 中使用示例
// ========================================
/**
* Next.js API Route 示例:上传文件
*
* 使用方法:
*
* // app/api/upload/route.ts
* import { uploadFile, generateUniqueFileName } from '@/lib/minio';
*
* export async function POST(request: Request) {
* const formData = await request.formData();
* const file = formData.get('file') as File;
*
* if (!file) {
* return Response.json({ error: '没有文件' }, { status: 400 });
* }
*
* const path = generateUniqueFileName(file.name, 'uploads');
* const url = await uploadFile(file, path);
*
* return Response.json({ url, path });
* }
*/
/**
* Next.js API Route 示例:删除文件
*
* // app/api/delete/route.ts
* import { deleteFile } from '@/lib/minio';
*
* export async function DELETE(request: Request) {
* const { path } = await request.json();
*
* if (!path) {
* return Response.json({ error: '缺少文件路径' }, { status: 400 });
* }
*
* await deleteFile(path);
*
* return Response.json({ success: true });
* }
*/
// ========================================
// 导出示例函数
// ========================================
export {
uploadAvatar,
uploadPostCover,
uploadPostImage,
getPublicFileUrl,
deleteAvatar,
deletePostImages,
getUserAvatars,
getPostCoversByMonth,
checkAvatarExists,
getFileDetails,
downloadFileToBuffer,
};