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- anche la versione file compressa del PDF ora è ok.

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This commit is contained in:
Surya Paolo
2025-05-29 19:19:40 +02:00
parent 40214abe64
commit d2aaf78c0e
4 changed files with 93 additions and 21 deletions
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1
package.json
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@@ -21,6 +21,7 @@
"bluebird": "^3.7.2",
"body-parser": "^1.20.3",
"cheerio": "^1.0.0",
"compress-pdf": "^0.5.3",
"cookie-parser": "^1.4.7",
"cors": "^2.8.5",
"country-codes-list": "^2.0.0",

BIN
prova_generato-stampabile.pdf
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95
src/server/modules/GenPdf.js
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@@ -1,5 +1,7 @@
const puppeteer = require('puppeteer');
const path = require('path');
const { exec } = require('child_process');
const fs = require('fs').promises;
const gs = require('ghostscript4js');
@@ -12,6 +14,8 @@ const { MyPage } = require('../models/mypage');
const tools = require('../tools/general');
const shared_consts = require('../tools/shared_nodejs');
const { compress } = require('compress-pdf');
class GenPdf {
constructor(idapp) {
this.idapp = idapp;
@@ -42,11 +46,11 @@ class GenPdf {
}
async autoScroll(page) {
console.log('inizia a scrollare')
console.log('inizia a scrollare');
await page.evaluate(async () => {
await new Promise((resolve) => {
let totalHeight = 0;
console.log('autoScroll...')
console.log('autoScroll...');
const distance = 100;
const timer = setInterval(() => {
window.scrollBy(0, distance);
@@ -57,11 +61,9 @@ class GenPdf {
resolve();
}
}, 40);
});
});
console.log(' FINE: autoScroll...')
console.log(' FINE: autoScroll...');
}
async generatePdfFromUrl(url, filenameOut, options = {}) {
@@ -70,23 +72,37 @@ class GenPdf {
}
const page = await this.browser.newPage();
const maxTentativi = 3;
try {
console.log(`caricamento pagina: ${url}`);
await page.goto(url, { waitUntil: 'networkidle0' });
await tools.attendiNSecondi(5);
await page.waitForSelector('#q-notify', { timeout: 60000 });
let success = false;
let numTentativi1 = 0;
while (numTentativi1 < maxTentativi) {
try {
await page.waitForSelector('.pdf-section', { timeout: 10000 });
success = true;
break;
} catch (e) {
console.log(`Tentativo ${numTentativi1 + 1}/${maxTentativi} fallito, ASPETTO DI PIU 10 secondi`);
await tools.attendiNSecondi(10);
}
numTentativi1++;
}
await this.autoScroll(page);
await tools.attendiNSecondi(5);
// Seleziona tutte le sezioni da stampare
let sectionHandles = await page.$$('.pdf-section');
let numTentativi = 0;
const maxTentativi = 3;
while (sectionHandles.length === 0 && numTentativi < maxTentativi) {
console.log(`Nessuna sezione .pdf-section trovata nella pagina, quindi ASPETTO DI PIU ${numTentativi + 1}/${maxTentativi}`);
console.log(
`Nessuna sezione .pdf-section trovata nella pagina, quindi ASPETTO DI PIU ${numTentativi + 1}/${maxTentativi}`
);
await tools.attendiNSecondi(5);
sectionHandles = await page.$$('.pdf-section');
numTentativi++;
@@ -113,8 +129,7 @@ class GenPdf {
height: el.scrollHeight, // piccolo padding
}));
console.log(`Larghezza: ${width}px, Altezza: ${height}px`);
// console.log(`Larghezza: ${width}px, Altezza: ${height}px`);
// Imposta viewport dinamico
await page.setViewport({ width, height });
@@ -151,6 +166,9 @@ class GenPdf {
console.log(`PDF finale generato: ${finalFilePath}`);
if (options.compressione) {
}
return finalFilePath;
} catch (error) {
console.error('Errore durante generazione PDF:', error);
@@ -361,6 +379,8 @@ class GenPdf {
}
let filenamerelative = '';
let fullnamepath = '';
let fullnamepath_compr = '';
let filenamerelative_compressed = '';
let stampa = options.stampa;
/*if (stampa) {
@@ -373,29 +393,72 @@ class GenPdf {
const catalog = await Catalog.findById(options.idCatalog);
if (catalog) {
const url = tools.getHostByIdApp(this.idapp) + '/cataloghi?id=' + catalog._id + '&stampa=' + (stampa ? '1' : '0');
const url =
tools.getHostByIdApp(this.idapp) + '/cataloghi?id=' + catalog._id + '&stampa=' + (stampa ? '1' : '0') + '&hideHeader=1';
if (url) {
const myfilenameout = await this.getPathByPage(catalog.idPageAssigned);
let addstr = (stampa) ? '_stampabile' : '';
let addstr = stampa ? '_stampabile' : '';
filenamerelative = options.path + `${myfilenameout}${addstr}_generato.pdf`;
fullnamepath = tools.getdirByIdApp(this.idapp) + '/' + filenamerelative;
await this.generatePdfFromUrl(url, fullnamepath, options);
if (options.comprimi) {
filenamerelative_compressed = options.path + `${myfilenameout}${addstr}_generato_compressed.pdf`;
fullnamepath_compr = tools.getdirByIdApp(this.idapp) + '/' + filenamerelative_compressed;
await this.compressPdf(fullnamepath, fullnamepath_compr, options.compressione);
}
}
}
return {fileout: filenamerelative, filesize: await tools.getSizeFile(fullnamepath)};
return {
fileout: filenamerelative,
fileout_compressed: filenamerelative_compressed,
filesize: await tools.getSizeFile(fullnamepath),
filesize_compressed: await tools.getSizeFile(fullnamepath_compr),
};
} catch (error) {
console.error('Errore durante la generazione del PDF dal catalogo ID:', error);
return {fileout: '', filesize: 0, error: 'Errore durante la generazione del PDF dal catalogo ID:' + error?.message};
return {
fileout: '',
filesize: 0,
error: 'Errore durante la generazione del PDF dal catalogo ID:' + error?.message,
};
}
return { fileout: '', filesize: 0 };
}
async compressPdf(inputPath, outputPath, compressione = 'printer') {
return new Promise((resolve, reject) => {
// Risolvi i percorsi assoluti
const inputFile = path.resolve(inputPath);
const outputFile = path.resolve(outputPath);
const validQualities = ['screen', 'ebook', 'printer', 'prepress', 'default'];
if (!validQualities.includes(compressione)) compressione = 'screen';
// Comando Ghostscript per compressione - impostazione per web (/screen)
const gsCommand = `gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/${compressione} -dNOPAUSE -dBATCH -dQUIET -sOutputFile="${outputFile}" "${inputFile}"`;
console.log('Eseguo comando:', gsCommand);
exec(gsCommand, (error, stdout, stderr) => {
if (error) {
console.error(`Errore compressione PDF: ${error.message}`);
return reject(error);
}
if (stderr) {
console.error(`Ghostscript stderr: ${stderr}`);
}
console.log(`Compressione completata. File salvato in: ${outputFile}`);
resolve(outputFile);
});
});
}
}
module.exports = GenPdf;

12
yarn.lock
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@@ -2363,6 +2363,14 @@ component-emitter@^1.3.0:
resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.1.tgz#ef1d5796f7d93f135ee6fb684340b26403c97d17"
integrity sha512-T0+barUSQRTUQASh8bx02dl+DhF54GtIDY13Y3m9oWTklKbb3Wv974meRpeZ3lp1JpLVECWWNHC4vaG2XHXouQ==
compress-pdf@^0.5.3:
version "0.5.3"
resolved "https://registry.yarnpkg.com/compress-pdf/-/compress-pdf-0.5.3.tgz#15a8c5d43f2241437a1ad42306955ccb9319367e"
integrity sha512-LeDPmE+o0PwxzqLU/uGIsaLxmnzZy4lXaY0tBov03uhNgXV6dZjU3VTBy3LhAhiCV+moXyBBE9kCDOZzZcEobg==
dependencies:
dotenv "16.4.7"
lodash "4.17.21"
concat-map@0.0.1:
version "0.0.1"
resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -3009,7 +3017,7 @@ domutils@^3.0.1, domutils@^3.1.0:
domelementtype "^2.3.0"
domhandler "^5.0.3"
dotenv@^16.4.7:
dotenv@16.4.7, dotenv@^16.4.7:
version "16.4.7"
resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-16.4.7.tgz#0e20c5b82950140aa99be360a8a5f52335f53c26"
integrity sha512-47qPchRCykZC03FhkYAhrvwU4xDBFIj1QPqaarj6mdM/hgUzfPHcpkHJOn3mJAufFeeAxAzeGsr5X0M4k6fLZQ==
@@ -5957,7 +5965,7 @@ lodash.some@^4.4.0:
resolved "https://registry.yarnpkg.com/lodash.some/-/lodash.some-4.6.0.tgz#1bb9f314ef6b8baded13b549169b2a945eb68e4d"
integrity sha512-j7MJE+TuT51q9ggt4fSgVqro163BEFjAt3u97IqU+JA2DkWl80nFTrowzLpZ/BnpN7rrl0JA/593NAdd8p/scQ==
lodash@^4.17.10, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.21:
lodash@4.17.21, lodash@^4.17.10, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.21:
version "4.17.21"
resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==