import base64, requests

with open("doc.pdf", "rb") as f:
    pdf_b64 = base64.b64encode(f.read()).decode()

r = requests.post(
    "https://signer.ejadtech.sa/sign-base64",
    headers={"X-API-Key": "..."},
    json={
        "pdf_base64": pdf_b64,
        "reason": "Approved",
        "return_format": "base64",
    },
    timeout=30,
)
r.raise_for_status()
data = r.json()
open("signed.pdf", "wb").write(base64.b64decode(data["pdf_base64"]))

import fs from "node:fs";

const pdfB64 = fs.readFileSync("doc.pdf").toString("base64");

const res = await fetch("https://signer.ejadtech.sa/sign-base64", {
  method: "POST",
  headers: {
    "X-API-Key": process.env.SIGNER_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    pdf_base64: pdfB64,
    reason: "Approved",
    return_format: "base64",
  }),
});
const data = await res.json();
fs.writeFileSync("signed.pdf",
  Buffer.from(data.pdf_base64, "base64"));

# داخل Odoo model — التكامل السلس
import requests

class DocumentSigner(models.Model):
    _name = 'document.signer'

    def sign_attachment(self, attachment):
        # attachment.datas في Odoo يكون base64 أصلاً!
        key = self.env['ir.config_parameter'].sudo().get_param('signer.key')
        r = requests.post(
            'https://signer.ejadtech.sa/sign-base64',
            headers={'X-API-Key': key},
            json={
                'pdf_base64': attachment.datas.decode(),
                'reason': f'Signed by {self.env.user.name}',
                'return_format': 'base64',
            }, timeout=30,
        )
        r.raise_for_status()
        return self.env['ir.attachment'].create({
            'name': f'{attachment.name}_signed.pdf',
            'datas': r.json()['pdf_base64'],
            'mimetype': 'application/pdf',
        })