feat: implement md-render command with client-side JavaScript rendering - Issue #132

Add comprehensive client-side markdown rendering functionality with dark theme support:

Core Features:
- md-render command generates self-contained HTML files
- Embedded markdown payload with client-side JavaScript rendering
- marked.js integration from CDN with graceful fallback
- YAML front matter support and title extraction

Template System:
- 4 responsive templates: basic (default), github, academic, dark
- Dark theme with GitHub dark mode inspired colors
- Custom CSS injection capability
- Mobile-responsive design with viewport support

Implementation Details:
- Complete TDD8 workflow: ISSUE→TEST→RED→GREEN→REFACTOR→DOCUMENT→REFINE→PUBLISH
- 11+ comprehensive test scenarios with excellent coverage
- Refactored template system using style dictionaries
- Enhanced CLI help text with usage examples
- Clean code organization and documentation

Usage:
  markitect md-render README.md --template dark
  markitect md-render article.md --template github --css custom.css

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
2025-10-07 00:14:56 +02:00
parent 137e060702
commit 00c4177358
5 changed files with 1164 additions and 2 deletions

View File

@@ -6,6 +6,8 @@ replacing the legacy unprefixed commands for better namespace consistency.
"""
import click
import json
import tempfile
from pathlib import Path
from typing import Dict, Any
@@ -39,7 +41,8 @@ class MarkdownCommandsPlugin(CommandPlugin):
return {
'md-ingest': md_ingest_command,
'md-get': md_get_command,
'md-list': md_list_command
'md-list': md_list_command,
'md-render': md_render_command
}
@@ -237,4 +240,258 @@ def md_list_command(ctx, output_format, names_only):
except Exception as e:
click.echo(f"Error listing files: {e}", err=True)
raise click.Abort()
raise click.Abort()
@click.command()
@click.argument('input_file', type=click.Path(exists=True))
@click.option('--output', '-o', type=click.Path(), help='Output HTML file path (defaults to input filename with .html extension)')
@click.option('--template', type=click.Choice(['basic', 'github', 'academic', 'dark']),
default='basic', help='HTML template: basic (default), github, academic, or dark theme')
@click.option('--css', type=click.Path(exists=True), help='Custom CSS file to inject into the template')
@click.pass_context
def md_render_command(ctx, input_file, output, template, css):
"""
Generate HTML with client-side JavaScript markdown rendering.
Creates a self-contained HTML file that includes the markdown content
as JavaScript data and renders it in the browser using client-side
markdown parsing with marked.js.
The generated HTML includes:
• Embedded markdown content as JavaScript payload
• Client-side rendering with marked.js from CDN
• YAML front matter support and metadata extraction
• Multiple responsive template options
• Custom CSS injection capability
• Graceful fallback if JavaScript fails
INPUT_FILE: Path to the markdown file to render
Available Templates:
• basic (default) - Clean, minimal design with system fonts
• github - GitHub-style appearance with heading underlines
• academic - Academic paper style with serif fonts and justified text
• dark - GitHub dark mode inspired theme with dark background
Examples:
# Basic usage with default template
markitect md-render README.md
# Specify output file and template
markitect md-render README.md --output index.html --template github
# Dark theme for night reading
markitect md-render docs/guide.md --template dark
# Academic paper with custom styling
markitect md-render paper.md --template academic --css custom.css
# Front matter will be parsed and available to JavaScript
# Files with YAML front matter are fully supported
"""
config = ctx.obj or {}
try:
if config.get('verbose', False):
click.echo(f"Rendering file: {input_file}")
# Read markdown file
input_path = Path(input_file)
markdown_content = input_path.read_text(encoding='utf-8')
# Extract front matter if present
front_matter = {}
if markdown_content.startswith('---\n'):
parts = markdown_content.split('---\n', 2)
if len(parts) >= 3:
try:
import yaml
front_matter = yaml.safe_load(parts[1]) or {}
markdown_content = parts[2]
except ImportError:
# Fallback without yaml parsing
pass
# Generate title from first heading or filename
title = front_matter.get('title', input_path.stem)
lines = markdown_content.strip().split('\n')
for line in lines:
if line.startswith('# '):
title = line[2:].strip()
break
# Load custom CSS if provided
css_content = ""
if css:
css_path = Path(css)
css_content = css_path.read_text(encoding='utf-8')
# Generate HTML with embedded markdown
html_content = generate_html_with_embedded_markdown(
markdown_content, title, template, css_content, front_matter
)
# Determine output path
if not output:
output = input_path.with_suffix('.html')
else:
output = Path(output)
# Ensure output directory exists
output.parent.mkdir(parents=True, exist_ok=True)
# Write HTML file
output.write_text(html_content, encoding='utf-8')
click.echo(f"✓ HTML generated: {output}")
if config.get('verbose', False):
click.echo(f" Template: {template}")
click.echo(f" Title: {title}")
if css:
click.echo(f" Custom CSS: {css}")
except Exception as e:
click.echo(f"Error rendering file: {e}", err=True)
raise click.Abort()
# Template definitions for cleaner code organization
TEMPLATE_STYLES = {
'basic': {
'body_color': '#333',
'body_bg': '',
'heading_color': '#2c3e50',
'heading_border': '',
'code_bg': '#f4f4f4',
'code_border': '',
'blockquote_border': '#ddd',
'blockquote_color': '#666',
'font_family': '-apple-system, BlinkMacSystemFont, \'Segoe UI\', \'Roboto\', \'Helvetica\', \'Arial\', sans-serif',
'max_width': '800px',
'text_align': ''
},
'github': {
'body_color': '#24292e',
'body_bg': 'background-color: #ffffff;',
'heading_color': '#1f2328',
'heading_border': 'border-bottom: 1px solid #d0d7de; padding-bottom: 0.3em;',
'code_bg': '#f4f4f4',
'code_border': '',
'blockquote_border': '#ddd',
'blockquote_color': '#666',
'font_family': '-apple-system, BlinkMacSystemFont, \'Segoe UI\', \'Roboto\', \'Helvetica\', \'Arial\', sans-serif',
'max_width': '800px',
'text_align': ''
},
'academic': {
'body_color': '#333',
'body_bg': '',
'heading_color': '#2c3e50',
'heading_border': '',
'code_bg': '#f4f4f4',
'code_border': '',
'blockquote_border': '#ddd',
'blockquote_color': '#666',
'font_family': '"Times New Roman", Times, serif',
'max_width': '900px',
'text_align': 'text-align: justify;'
},
'dark': {
'body_color': '#e1e4e8',
'body_bg': 'background-color: #0d1117;',
'heading_color': '#58a6ff',
'heading_border': 'border-bottom: 1px solid #21262d; padding-bottom: 0.3em;',
'code_bg': '#161b22',
'code_border': 'border: 1px solid #21262d;',
'blockquote_border': '#58a6ff',
'blockquote_color': '#8b949e',
'font_family': '-apple-system, BlinkMacSystemFont, \'Segoe UI\', \'Roboto\', \'Helvetica\', \'Arial\', sans-serif',
'max_width': '800px',
'text_align': ''
}
}
def generate_html_with_embedded_markdown(markdown_content, title, template, css_content, front_matter):
"""Generate HTML with embedded markdown content for client-side rendering."""
# Get template styles or default to basic
styles = TEMPLATE_STYLES.get(template, TEMPLATE_STYLES['basic'])
# HTML template with style variables
html_template = '''<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>{title}</title>
<style>
body {{
font-family: {font_family};
line-height: 1.6;
max-width: {max_width};
margin: 0 auto;
padding: 20px;
color: {body_color};
{body_bg}
{text_align}
}}
#markdown-content {{
margin: 0;
}}
h1, h2, h3, h4, h5, h6 {{
color: {heading_color};
{heading_border}
}}
pre {{
background-color: {code_bg};
{code_border}
padding: 15px;
border-radius: 5px;
overflow-x: auto;
}}
code {{
background-color: {code_bg};
{code_border}
padding: 2px 4px;
border-radius: 3px;
}}
blockquote {{
border-left: 4px solid {blockquote_border};
margin: 0;
padding-left: 20px;
color: {blockquote_color};
}}
{css_content}
</style>
</head>
<body>
<div id="markdown-content"></div>
<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
<script>
// Embedded markdown payload
const markdownContent = {markdown_json};
const frontMatter = {front_matter_json};
// Render markdown on page load
document.addEventListener('DOMContentLoaded', function() {{
if (typeof marked !== 'undefined') {{
document.getElementById('markdown-content').innerHTML = marked.parse(markdownContent);
}} else {{
// Fallback if marked.js fails to load
document.getElementById('markdown-content').innerHTML =
'<pre>' + markdownContent.replace(/</g, '&lt;').replace(/>/g, '&gt;') + '</pre>';
}}
}});
</script>
</body>
</html>'''
# Format template with styles and content
return html_template.format(
title=title,
css_content=css_content,
markdown_json=json.dumps(markdown_content),
front_matter_json=json.dumps(front_matter),
**styles
)