fix: serve real thumbnails for local photos instead of full-resolution originals (#822)

Add thumbnailService that lazy-generates a WebP thumbnail (800px max, q80) on
first GET /api/photos/:id/thumbnail request using sharp. The generated file is
stored at uploads/journey/thumbs/<sha1>.webp and the path is persisted to
trek_photos.thumbnail_path so subsequent requests are served directly from disk.
Also populates width/height as a side-effect.

streamPhoto now branches on kind for local file_path rows — thumbnail requests
use the stored/generated thumb path; original requests (and fallback when thumb
generation fails) continue to serve the full file. Remote providers (Immich,
Synology) are unaffected.
This commit is contained in:
jubnl
2026-04-22 15:56:34 +02:00
parent f6b3931bc4
commit 7c9e945b8c
4 changed files with 642 additions and 1 deletions
+575
View File
@@ -25,6 +25,7 @@
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"@img/colour": "^1.0.0",
"detect-libc": "^2.1.2",
"semver": "^7.7.3"
},
"engines": {
"node": "^18.17.0 || ^20.3.0 || >=21.0.0"
},
"funding": {
"url": "https://opencollective.com/libvips"
},
"optionalDependencies": {
"@img/sharp-darwin-arm64": "0.34.5",
"@img/sharp-darwin-x64": "0.34.5",
"@img/sharp-libvips-darwin-arm64": "1.2.4",
"@img/sharp-libvips-darwin-x64": "1.2.4",
"@img/sharp-libvips-linux-arm": "1.2.4",
"@img/sharp-libvips-linux-arm64": "1.2.4",
"@img/sharp-libvips-linux-ppc64": "1.2.4",
"@img/sharp-libvips-linux-riscv64": "1.2.4",
"@img/sharp-libvips-linux-s390x": "1.2.4",
"@img/sharp-libvips-linux-x64": "1.2.4",
"@img/sharp-libvips-linuxmusl-arm64": "1.2.4",
"@img/sharp-libvips-linuxmusl-x64": "1.2.4",
"@img/sharp-linux-arm": "0.34.5",
"@img/sharp-linux-arm64": "0.34.5",
"@img/sharp-linux-ppc64": "0.34.5",
"@img/sharp-linux-riscv64": "0.34.5",
"@img/sharp-linux-s390x": "0.34.5",
"@img/sharp-linux-x64": "0.34.5",
"@img/sharp-linuxmusl-arm64": "0.34.5",
"@img/sharp-linuxmusl-x64": "0.34.5",
"@img/sharp-wasm32": "0.34.5",
"@img/sharp-win32-arm64": "0.34.5",
"@img/sharp-win32-ia32": "0.34.5",
"@img/sharp-win32-x64": "0.34.5"
}
},
"node_modules/shebang-command": { "node_modules/shebang-command": {
"version": "2.0.0", "version": "2.0.0",
"resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz", "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
@@ -5766,6 +6334,13 @@
"nodetouch": "bin/nodetouch.js" "nodetouch": "bin/nodetouch.js"
} }
}, },
"node_modules/tslib": {
"version": "2.8.1",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
"integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
"license": "0BSD",
"optional": true
},
"node_modules/tsx": { "node_modules/tsx": {
"version": "4.21.0", "version": "4.21.0",
"resolved": "https://registry.npmjs.org/tsx/-/tsx-4.21.0.tgz", "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.21.0.tgz",
+1
View File
@@ -30,6 +30,7 @@
"otplib": "^12.0.1", "otplib": "^12.0.1",
"qrcode": "^1.5.4", "qrcode": "^1.5.4",
"semver": "^7.7.4", "semver": "^7.7.4",
"sharp": "^0.34.5",
"tsx": "^4.21.0", "tsx": "^4.21.0",
"typescript": "^6.0.2", "typescript": "^6.0.2",
"undici": "^7.0.0", "undici": "^7.0.0",
@@ -9,6 +9,7 @@ import type { ServiceResult, AssetInfo } from './helpersService';
import { fail, success } from './helpersService'; import { fail, success } from './helpersService';
import { encrypt_api_key, decrypt_api_key } from '../apiKeyCrypto'; import { encrypt_api_key, decrypt_api_key } from '../apiKeyCrypto';
import * as photoCache from './trekPhotoCache'; import * as photoCache from './trekPhotoCache';
import { ensureLocalThumbnail } from './thumbnailService';
// ── Lookup / Register ──────────────────────────────────────────────────── // ── Lookup / Register ────────────────────────────────────────────────────
@@ -101,7 +102,31 @@ export async function streamPhoto(
} }
if (photo.file_path) { if (photo.file_path) {
const localPath = path.join(__dirname, '../../../uploads', photo.file_path); const uploadsRoot = path.join(__dirname, '../../../uploads');
if (kind === 'thumbnail') {
let thumbRel = photo.thumbnail_path ?? null;
if (!thumbRel) {
const result = await ensureLocalThumbnail(uploadsRoot, photo.file_path);
if (result) {
thumbRel = result.thumbnailRelPath;
db.prepare(
'UPDATE trek_photos SET thumbnail_path = ?, width = COALESCE(width, ?), height = COALESCE(height, ?) WHERE id = ?'
).run(thumbRel, result.width, result.height, photo.id);
}
}
if (thumbRel) {
const thumbAbs = path.join(uploadsRoot, thumbRel);
if (fs.existsSync(thumbAbs)) {
res.set('Cache-Control', 'public, max-age=86400, immutable');
res.sendFile(thumbAbs);
return;
}
}
// Fall through to original if thumbnail unavailable.
}
const localPath = path.join(uploadsRoot, photo.file_path);
if (fs.existsSync(localPath)) { if (fs.existsSync(localPath)) {
res.set('Cache-Control', 'public, max-age=86400'); res.set('Cache-Control', 'public, max-age=86400');
res.sendFile(localPath); res.sendFile(localPath);
@@ -0,0 +1,40 @@
import sharp from 'sharp'
import path from 'path'
import fs from 'fs/promises'
import crypto from 'crypto'
const THUMB_MAX = 800
const THUMB_QUALITY = 80
export async function ensureLocalThumbnail(
uploadsRoot: string,
originalRelPath: string,
): Promise<{ thumbnailRelPath: string; width: number; height: number } | null> {
const originalAbs = path.join(uploadsRoot, originalRelPath)
try { await fs.access(originalAbs) } catch { return null }
// Deterministic name so concurrent requests don't race on the same photo.
const hash = crypto.createHash('sha1').update(originalRelPath).digest('hex').slice(0, 16)
const thumbRel = `journey/thumbs/${hash}.webp`
const thumbAbs = path.join(uploadsRoot, thumbRel)
try {
const [srcStat, dstStat] = await Promise.all([
fs.stat(originalAbs),
fs.stat(thumbAbs).catch(() => null),
])
if (dstStat && dstStat.mtimeMs >= srcStat.mtimeMs) {
const meta = await sharp(thumbAbs).metadata()
return { thumbnailRelPath: thumbRel, width: meta.width ?? 0, height: meta.height ?? 0 }
}
} catch { /* regenerate */ }
await fs.mkdir(path.dirname(thumbAbs), { recursive: true })
await sharp(originalAbs)
.rotate()
.resize({ width: THUMB_MAX, height: THUMB_MAX, fit: 'inside', withoutEnlargement: true })
.webp({ quality: THUMB_QUALITY })
.toFile(thumbAbs)
const meta = await sharp(thumbAbs).metadata()
return { thumbnailRelPath: thumbRel, width: meta.width ?? 0, height: meta.height ?? 0 }
}