91 lines
2.7 KiB
Python
91 lines
2.7 KiB
Python
"""
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PDF export utility using WeasyPrint.
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Generates PDF documents from rendered markdown HTML.
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Used by both the authenticated API and public share views.
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"""
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import logging
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from weasyprint import HTML
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logger = logging.getLogger("obsigate.pdf")
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def generate_pdf(html_content: str, title: str = "document", base_url: str | None = None) -> bytes:
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"""Generate a PDF from HTML content.
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Args:
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html_content: Full HTML document string.
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title: Document title (used for metadata).
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base_url: Base URL for resolving relative URLs in the HTML.
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Returns:
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PDF file as bytes.
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"""
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html = HTML(string=html_content, base_url=base_url or "")
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return html.write_pdf()
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def build_pdf_html(body_html: str, title: str, theme: str = "light") -> str:
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"""Wrap rendered markdown HTML in a complete print-friendly HTML document.
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Args:
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body_html: Rendered markdown HTML (without <html>/<body> wrappers).
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title: Document title.
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theme: 'light' or 'dark' — light is recommended for PDF.
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Returns:
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Complete HTML document string.
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"""
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return f"""<!DOCTYPE html>
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<html lang="fr">
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<head><meta charset="utf-8"><title>{title}</title>
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<style>
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body {{
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font-family: Georgia, "Times New Roman", serif, "Noto Color Emoji";
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max-width: 720px;
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margin: 40px auto;
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padding: 0 20px;
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line-height: 1.7;
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color: #1a1a2e;
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font-size: 13px;
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}}
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h1 {{ font-size: 22px; border-bottom: 2px solid #333; padding-bottom: 6px; margin-top: 0; }}
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h2 {{ font-size: 18px; margin-top: 24px; }}
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h3 {{ font-size: 15px; margin-top: 20px; }}
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h4, h5, h6 {{ font-size: 14px; margin-top: 16px; }}
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p {{ margin: 8px 0; }}
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pre {{
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background: #f5f5f5;
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border: 1px solid #e0e0e0;
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border-radius: 4px;
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padding: 10px 14px;
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font-size: 11px;
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overflow-x: auto;
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white-space: pre-wrap;
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word-wrap: break-word;
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}}
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code {{ font-size: 12px; background: #f5f5f5; padding: 1px 4px; border-radius: 2px; }}
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pre code {{ background: none; padding: 0; }}
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a {{ color: #4f46e5; text-decoration: none; }}
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img {{ max-width: 100%; border-radius: 4px; }}
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blockquote {{
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border-left: 3px solid #ccc;
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padding-left: 14px;
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color: #555;
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margin: 12px 0;
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}}
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table {{ border-collapse: collapse; width: 100%; margin: 12px 0; page-break-inside: avoid; }}
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th, td {{ border: 1px solid #ddd; padding: 6px 10px; text-align: left; font-size: 12px; }}
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th {{ background: #f0f0f0; font-weight: 600; }}
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ul, ol {{ margin: 8px 0; padding-left: 24px; }}
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li {{ margin: 2px 0; }}
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hr {{ border: none; border-top: 1px solid #ddd; margin: 20px 0; }}
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@page {{ margin: 2cm; size: A4; }}
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@media print {{ body {{ margin: 0; }} }}
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</style></head>
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<body><h1>{title}</h1>
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{body_html}
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</body></html>"""
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