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import * as fs from 'node:fs';
import { fileURLToPath } from 'node:url';
import { dirname } from 'node:path';
import Koa from 'koa';
import send from 'koa-send';
import rename from 'rename';
import * as tmp from 'tmp';
import { serverLogger } from '../index.js';
import { contentDisposition } from '@/misc/content-disposition.js';
import { DriveFiles } from '@/models/index.js';
import { InternalStorage } from '@/services/drive/internal-storage.js';
import { downloadUrl } from '@/misc/download-url.js';
import { detectType } from '@/misc/get-file-info.js';
import { convertToJpeg, convertToPng, convertToPngOrJpeg } from '@/services/drive/image-processor.js';
import { GenerateVideoThumbnail } from '@/services/drive/generate-video-thumbnail.js';
import { StatusError } from '@/misc/fetch.js';
import { FILE_TYPE_BROWSERSAFE } from '@/const.js';
const _filename = fileURLToPath(import.meta.url);
const _dirname = dirname(_filename);
const assets = `${_dirname}/../../server/file/assets/`;
const commonReadableHandlerGenerator = (ctx: Koa.Context) => (e: Error): void => {
serverLogger.error(e);
ctx.status = 500;
ctx.set('Cache-Control', 'max-age=300');
};
// eslint-disable-next-line import/no-default-export
export default async function(ctx: Koa.Context) {
const key = ctx.params.key;
// Fetch drive file
const file = await DriveFiles.createQueryBuilder('file')
.where('file.accessKey = :accessKey', { accessKey: key })
.orWhere('file.thumbnailAccessKey = :thumbnailAccessKey', { thumbnailAccessKey: key })
.orWhere('file.webpublicAccessKey = :webpublicAccessKey', { webpublicAccessKey: key })
.getOne();
if (file == null) {
ctx.status = 404;
ctx.set('Cache-Control', 'max-age=86400');
await send(ctx as any, '/dummy.png', { root: assets });
return;
}
const isThumbnail = file.thumbnailAccessKey === key;
const isWebpublic = file.webpublicAccessKey === key;
if (!file.storedInternal) {
if (file.isLink && file.uri) { // 期限切れリモートファイル
const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
tmp.file((e, path, fd, cleanup) => {
if (e) return rej(e);
res([path, cleanup]);
});
});
try {
await downloadUrl(file.uri, path);
const { mime, ext } = await detectType(path);
const convertFile = async () => {
if (isThumbnail) {
if (['image/jpeg', 'image/webp'].includes(mime)) {
return await convertToJpeg(path, 498, 280);
} else if (['image/png', 'image/svg+xml'].includes(mime)) {
return await convertToPngOrJpeg(path, 498, 280);
} else if (mime.startsWith('video/')) {
return await GenerateVideoThumbnail(path);
}
}
if (isWebpublic) {
if (['image/svg+xml'].includes(mime)) {
return await convertToPng(path, 2048, 2048);
}
}
return {
data: fs.readFileSync(path),
ext,
type: mime,
};
};
const image = await convertFile();
ctx.body = image.data;
ctx.set('Content-Type', FILE_TYPE_BROWSERSAFE.includes(image.type) ? image.type : 'application/octet-stream');
ctx.set('Cache-Control', 'max-age=31536000, immutable');
} catch (e) {
serverLogger.error(`${e}`);
if (e instanceof StatusError && e.isClientError) {
ctx.status = e.statusCode;
ctx.set('Cache-Control', 'max-age=86400');
} else {
ctx.status = 500;
ctx.set('Cache-Control', 'max-age=300');
}
} finally {
cleanup();
}
return;
}
ctx.status = 204;
ctx.set('Cache-Control', 'max-age=86400');
return;
}
if (isThumbnail || isWebpublic) {
const { mime, ext } = await detectType(InternalStorage.resolvePath(key));
const filename = rename(file.name, {
suffix: isThumbnail ? '-thumb' : '-web',
extname: ext ? `.${ext}` : undefined,
}).toString();
ctx.body = InternalStorage.read(key);
ctx.set('Content-Type', FILE_TYPE_BROWSERSAFE.includes(mime) ? mime : 'application/octet-stream');
ctx.set('Cache-Control', 'max-age=31536000, immutable');
ctx.set('Content-Disposition', contentDisposition('inline', filename));
} else {
const readable = InternalStorage.read(file.accessKey!);
readable.on('error', commonReadableHandlerGenerator(ctx));
ctx.body = readable;
ctx.set('Content-Type', FILE_TYPE_BROWSERSAFE.includes(file.type) ? file.type : 'application/octet-stream');
ctx.set('Cache-Control', 'max-age=31536000, immutable');
ctx.set('Content-Disposition', contentDisposition('inline', file.name));
}
}
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