119 lines
3.7 KiB
TypeScript
119 lines
3.7 KiB
TypeScript
import * as Koa from 'koa';
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import * as send from 'koa-send';
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import * as rename from 'rename';
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import * as tmp from 'tmp';
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import * as fs from 'fs';
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import { serverLogger } from '..';
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import { contentDisposition } from '../../misc/content-disposition';
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import { DriveFiles } from '../../models';
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import { InternalStorage } from '../../services/drive/internal-storage';
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import { downloadUrl } from '../../misc/donwload-url';
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import { detectType } from '../../misc/get-file-info';
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import { convertToJpeg, convertToPng } from '../../services/drive/image-processor';
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import { GenerateVideoThumbnail } from '../../services/drive/generate-video-thumbnail';
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const assets = `${__dirname}/../../server/file/assets/`;
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const commonReadableHandlerGenerator = (ctx: Koa.Context) => (e: Error): void => {
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serverLogger.error(e);
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ctx.status = 500;
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ctx.set('Cache-Control', 'max-age=300');
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};
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export default async function(ctx: Koa.Context) {
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const key = ctx.params.key;
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// Fetch drive file
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const file = await DriveFiles.createQueryBuilder('file')
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.where('file.accessKey = :accessKey', { accessKey: key })
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.orWhere('file.thumbnailAccessKey = :thumbnailAccessKey', { thumbnailAccessKey: key })
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.orWhere('file.webpublicAccessKey = :webpublicAccessKey', { webpublicAccessKey: key })
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.getOne();
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if (file == null) {
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ctx.status = 404;
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ctx.set('Cache-Control', 'max-age=86400');
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await send(ctx as any, '/dummy.png', { root: assets });
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return;
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}
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const isThumbnail = file.thumbnailAccessKey === key;
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const isWebpublic = file.webpublicAccessKey === key;
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if (!file.storedInternal) {
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if (file.isLink && file.uri) { // 期限切れリモートファイル
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const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
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tmp.file((e, path, fd, cleanup) => {
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if (e) return rej(e);
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res([path, cleanup]);
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});
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});
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try {
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await downloadUrl(file.uri, path);
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const { mime, ext } = await detectType(path);
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const convertFile = async () => {
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if (isThumbnail) {
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if (['image/jpeg', 'image/webp'].includes(mime)) {
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return await convertToJpeg(path, 498, 280);
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} else if (['image/png'].includes(mime)) {
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return await convertToPng(path, 498, 280);
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} else if (mime.startsWith('video/')) {
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return await GenerateVideoThumbnail(path);
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}
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}
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return {
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data: fs.readFileSync(path),
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ext,
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type: mime,
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};
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};
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const image = await convertFile();
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ctx.body = image.data;
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ctx.set('Content-Type', image.type);
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ctx.set('Cache-Control', 'max-age=31536000, immutable');
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} catch (e) {
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serverLogger.error(e);
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if (typeof e == 'number' && e >= 400 && e < 500) {
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ctx.status = e;
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ctx.set('Cache-Control', 'max-age=86400');
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} else {
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ctx.status = 500;
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ctx.set('Cache-Control', 'max-age=300');
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}
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} finally {
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cleanup();
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}
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return;
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}
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ctx.status = 204;
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ctx.set('Cache-Control', 'max-age=86400');
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return;
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}
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if (isThumbnail || isWebpublic) {
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const { mime, ext } = await detectType(InternalStorage.resolvePath(key));
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const filename = rename(file.name, {
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suffix: isThumbnail ? '-thumb' : '-web',
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extname: ext ? `.${ext}` : undefined
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}).toString();
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ctx.body = InternalStorage.read(key);
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ctx.set('Content-Type', mime);
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ctx.set('Cache-Control', 'max-age=31536000, immutable');
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ctx.set('Content-Disposition', contentDisposition('inline', filename));
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} else {
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const readable = InternalStorage.read(file.accessKey!);
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readable.on('error', commonReadableHandlerGenerator(ctx));
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ctx.body = readable;
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ctx.set('Content-Type', file.type);
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ctx.set('Cache-Control', 'max-age=31536000, immutable');
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ctx.set('Content-Disposition', contentDisposition('inline', file.name));
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}
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}
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