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Export: add /p/<uid>.pdf and /p/<uid>.docx (xhtml2pdf + htmldocx); overlay export buttons for all users; minor HTML wrapping

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This commit is contained in:
RGalyaviev
2025-09-04 08:48:36 +03:00
parent 54833b39f1
commit 2f031591bf
2 changed files with 59 additions and 2 deletions
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58
app.py
View File

@@ -15,6 +15,10 @@ from flask import (
flash, flash,
Response, Response,
) )
from io import BytesIO
from xhtml2pdf import pisa # type: ignore
from docx import Document # type: ignore
from htmldocx import HtmlToDocx # type: ignore
def create_app(): def create_app():
@@ -238,14 +242,64 @@ def create_app():
"Made by Ruslan" "Made by Ruslan"
"</div>" "</div>"
) )
# Export buttons (visible to everyone). If admin overlay exists, offset a bit.
top_offset = "60px" if is_logged_in() else "16px"
pdf_url = url_for("export_pdf", uid=uid)
docx_url = url_for("export_docx", uid=uid)
exports = (
f'<div style="position:fixed;top:{top_offset};right:16px;z-index:2147483647;display:flex;gap:8px;">'
f'<a href="{pdf_url}" style="background:#2b2f3b;color:#fff;padding:8px 10px;border-radius:8px;text-decoration:none;font-weight:600;">PDF</a>'
f'<a href="{docx_url}" style="background:#2b2f3b;color:#fff;padding:8px 10px;border-radius:8px;text-decoration:none;font-weight:600;">Word</a>'
'</div>'
)
overlays = wm + exports
lower_all = html.lower() lower_all = html.lower()
if "</body>" in lower_all: if "</body>" in lower_all:
i2 = lower_all.rfind("</body>") i2 = lower_all.rfind("</body>")
html = html[:i2] + wm + html[i2:] html = html[:i2] + overlays + html[i2:]
else: else:
html = html + wm html = html + overlays
return Response(html, mimetype="text/html; charset=utf-8") return Response(html, mimetype="text/html; charset=utf-8")
def _fetch_page(uid: str):
db = get_db()
row = db.execute("SELECT title, html FROM pages WHERE uuid = ?", (uid,)).fetchone()
if row is None:
abort(404)
return row
def _wrap_html_for_export(title: str, html: str) -> str:
head_title = f"<title>{title}</title>" if title else ""
return (
"<!doctype html><html lang='ru'><head><meta charset='utf-8'>" + head_title +
"<style>body{font-family:Arial,Helvetica,sans-serif;}</style></head><body>" +
html + "</body></html>"
)
@app.route("/p/<string:uid>.pdf")
def export_pdf(uid: str):
row = _fetch_page(uid)
title = row["title"] or f"page-{uid[:8]}"
html_doc = _wrap_html_for_export(title, row["html"])
out = BytesIO()
pisa.CreatePDF(src=html_doc, dest=out)
out.seek(0)
headers = {"Content-Disposition": f"attachment; filename={title}.pdf"}
return Response(out.read(), mimetype="application/pdf", headers=headers)
@app.route("/p/<string:uid>.docx")
def export_docx(uid: str):
row = _fetch_page(uid)
title = row["title"] or f"page-{uid[:8]}"
html_doc = _wrap_html_for_export(title, row["html"])
doc = Document()
HtmlToDocx().add_html_to_document(html_doc, doc)
out = BytesIO()
doc.save(out)
out.seek(0)
headers = {"Content-Disposition": f"attachment; filename={title}.docx"}
return Response(out.read(), mimetype="application/vnd.openxmlformats-officedocument.wordprocessingml.document", headers=headers)
# Optional: simple 404 page to keep things minimal # Optional: simple 404 page to keep things minimal
@app.errorhandler(404) @app.errorhandler(404)
def not_found(_): def not_found(_):

3
requirements.txt
View File

@@ -1,2 +1,5 @@
Flask>=2.3,<3.0 Flask>=2.3,<3.0
gunicorn>=21.2 gunicorn>=21.2
python-docx>=1.1
htmldocx>=0.0.6
xhtml2pdf>=0.2.15