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librodrome/server/api/admin/pdf-outline.get.ts
Yvv f0338cca5e
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Fix déroulant PDF en production : polyfills DOMMatrix + worker pdfjs
pdfjs-dist en Node.js pur (hors Vite) nécessite :
- DOMMatrix, Path2D, ImageData polyfills (pas de DOM en Node)
- pdf.worker.mjs copié dans le build (traceInclude dans nitro config)
Testé : 61 entrées retournées en mode production.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-28 23:24:59 +01:00

87 lines
2.7 KiB
TypeScript

import { join } from 'node:path'
import { readFileSync, existsSync } from 'node:fs'
// Polyfills nécessaires pour pdfjs-dist en Node.js pur (pas de DOM)
// On n'a besoin que du parsing, pas du rendu
if (typeof globalThis.DOMMatrix === 'undefined') {
// @ts-expect-error polyfill minimal pour pdfjs
globalThis.DOMMatrix = class DOMMatrix {
constructor() { return Object.assign(this, { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 }) }
isIdentity = true
translate() { return new DOMMatrix() }
scale() { return new DOMMatrix() }
inverse() { return new DOMMatrix() }
multiply() { return new DOMMatrix() }
}
}
if (typeof globalThis.Path2D === 'undefined') {
// @ts-expect-error polyfill stub
globalThis.Path2D = class Path2D { constructor() {} }
}
if (typeof globalThis.ImageData === 'undefined') {
// @ts-expect-error polyfill stub
globalThis.ImageData = class ImageData { constructor(w: number, h: number) { this.width = w; this.height = h; this.data = new Uint8ClampedArray(w * h * 4) } }
}
export default defineEventHandler(async () => {
const config = await readYaml('bookplayer.config.yml')
const pdfFile = config?.book?.pdfFile || '/pdf/une-economie-du-don.pdf'
// Résolution du chemin PDF : dev (public/) et prod (.output/public/)
const cwd = process.cwd()
const candidates = [
join(cwd, 'public', pdfFile),
join(cwd, '.output', 'public', pdfFile),
]
const pdfPath = candidates.find(p => existsSync(p))
if (!pdfPath) {
console.warn('[pdf-outline] PDF non trouvé. cwd:', cwd, 'candidats:', candidates)
return []
}
let data: Uint8Array
try {
data = new Uint8Array(readFileSync(pdfPath))
} catch (err) {
console.warn('[pdf-outline] Erreur lecture PDF:', err)
return []
}
const pdfjsLib = await import('pdfjs-dist/legacy/build/pdf.mjs')
let doc
try {
doc = await pdfjsLib.getDocument({ data, useSystemFonts: true }).promise
} catch (err) {
console.warn('[pdf-outline] Erreur getDocument:', err)
return []
}
const outline = await doc.getOutline()
if (!outline || outline.length === 0) {
doc.destroy()
return []
}
const entries: Array<{ title: string; page: number; level: number }> = []
async function extract(items: any[], level: number) {
for (const item of items) {
let page: number | null = null
try {
let dest = item.dest
if (typeof dest === 'string') dest = await doc.getDestination(dest)
if (dest) page = (await doc.getPageIndex(dest[0])) + 1
} catch {}
if (page !== null) entries.push({ title: item.title, page, level })
if (item.items?.length) await extract(item.items, level + 1)
}
}
await extract(outline, 0)
doc.destroy()
return entries
})