# app.py
import gradio as gr
import markdown
import tempfile
import os
from weasyprint import HTML
from pathlib import Path
def convert_markdown_to_pdf(markdown_file):
"""
Convert uploaded markdown file to PDF and return both preview HTML and PDF path
"""
if markdown_file is None:
return None, None
# Read the markdown content
markdown_content = markdown_file.decode('utf-8')
# Convert markdown to HTML
html_content = markdown.markdown(markdown_content)
# Wrap HTML content with proper HTML structure and CSS
full_html = f"""
{html_content}
"""
# Create temporary file for PDF
with tempfile.NamedTemporaryFile(delete=False, suffix='.pdf') as pdf_file:
pdf_path = pdf_file.name
# Convert HTML to PDF using WeasyPrint
try:
HTML(string=full_html).write_pdf(pdf_path)
return full_html, pdf_path
except Exception as e:
print(f"Error converting to PDF: {e}")
if os.path.exists(pdf_path):
os.unlink(pdf_path)
return None, None
def process_file(file):
"""
Process the uploaded file and return preview and PDF download
"""
if file is None:
return None, None
preview_html, pdf_path = convert_markdown_to_pdf(file)
if preview_html is None or pdf_path is None:
return "Error converting file", None
return preview_html, pdf_path
# Create Gradio interface
with gr.Blocks() as app:
gr.Markdown("# Markdown to PDF Converter")
gr.Markdown("Upload a markdown file to convert it to PDF. You can preview the result and download the PDF.")
with gr.Row():
file_input = gr.File(label="Upload Markdown File", file_types=[".md", ".markdown"])
with gr.Row():
preview = gr.HTML(label="Preview")
pdf_output = gr.File(label="Download PDF")
file_input.upload(
fn=process_file,
inputs=[file_input],
outputs=[preview, pdf_output]
)
if __name__ == "__main__":
app.launch()