feat: Complete Issue #6 - Generate Markdown Stub from Schema
🎯 Core Implementation: - StubGenerator class with intelligent heading hierarchy generation - CLI command 'generate-stub' with comprehensive options (--output, --style, --title) - Multiple placeholder styles: default, custom, detailed - Full file I/O support and error handling 📊 Features Delivered: - Template generation from JSON schemas with proper heading structure - Intelligent section naming based on document hierarchy - Round-trip validation: generated stubs validate against source schemas - Integration with existing schema generation and validation workflow 🧪 Quality Assurance: - 23 comprehensive tests covering all functionality - Complete TDD8 methodology: RED-GREEN-REFACTOR cycle - CLI integration tests and error handling validation - 417/417 total tests passing - no regressions 🔄 Bidirectional Workflow Complete: Schema Generation (✅ Issue #5) → Schema Validation (✅ Issue #7) → Stub Generation (✅ Issue #6) This completes the critical template-driven document creation workflow essential for arc42 architecture documentation system goals. Usage Examples: markitect generate-stub blog_schema.json --output template.md markitect generate-stub schema.json --style detailed --title "My Document" 🎖️ Strategic Achievement: Template generation foundation complete and production-ready 🧪 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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@@ -1419,6 +1419,72 @@ def schema_delete(config, schema_name, confirm):
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sys.exit(1)
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@cli.command('generate-stub')
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@click.argument('schema_file', type=click.Path(exists=True, path_type=Path))
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@click.option('--output', '-o', type=click.Path(path_type=Path),
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help='Output file path (default: stdout)')
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@click.option('--style', type=click.Choice(['default', 'custom', 'detailed']),
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default='default', help='Placeholder content style')
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@click.option('--title', type=str, help='Custom document title')
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@pass_config
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def generate_stub(config, schema_file, output, style, title):
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"""
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Generate a markdown stub/template from a JSON schema.
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Creates a markdown document with proper heading hierarchy and placeholder
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content based on the structural definitions in the JSON schema.
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SCHEMA_FILE: Path to the JSON schema file
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Examples:
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markitect generate-stub blog_schema.json
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markitect generate-stub schema.json --output template.md
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markitect generate-stub schema.json --style detailed --title "My Document"
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"""
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try:
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if config.get('verbose'):
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click.echo(f"Generating stub from schema: {schema_file}", err=True)
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from .stub_generator import StubGenerator
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generator = StubGenerator()
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# Load schema and generate stub content
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import json
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with open(schema_file, 'r') as f:
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schema = json.load(f)
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stub_content = generator.generate_stub_from_schema(
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schema, placeholder_style=style, title=title
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)
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# Output to file or stdout
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if output:
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generator.generate_stub_to_file(schema, output, style, title)
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click.echo(f"✅ Stub generated: {output}")
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if config.get('verbose'):
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click.echo(f"Generated markdown template saved to: {output}", err=True)
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else:
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click.echo(stub_content)
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if config.get('verbose'):
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click.echo(f"Generated {len(stub_content)} characters of content", err=True)
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except FileNotFoundError as e:
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click.echo(f"Error: {e}", err=True)
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sys.exit(1)
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except json.JSONDecodeError as e:
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click.echo(f"Error: Invalid JSON in schema file - {e}", err=True)
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sys.exit(1)
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except Exception as e:
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click.echo(f"Stub generation error: {e}", err=True)
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if config and config.get('verbose'):
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import traceback
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click.echo(traceback.format_exc(), err=True)
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sys.exit(1)
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def main():
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"""
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Main entry point for the CLI.
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253
markitect/stub_generator.py
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253
markitect/stub_generator.py
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@@ -0,0 +1,253 @@
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"""
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Stub Generator for Issue #6: Generate a Markdown Stub from a Schema.
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This module provides functionality to create markdown template files from JSON schemas
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with appropriate placeholder content and structural elements.
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"""
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import json
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from pathlib import Path
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from typing import Dict, Any, Optional, List, Callable
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# Constants for better maintainability
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DEFAULT_TITLE = "Document Title"
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HEADING_PREFIX_LEVEL_1 = "#"
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LEVEL_KEY_PREFIX = "level_"
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class StubGenerator:
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"""
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Generates markdown stub/template files from JSON schemas.
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Creates markdown documents with proper heading hierarchy and placeholder
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content based on the structural definitions in JSON schemas.
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"""
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def __init__(self):
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"""Initialize the stub generator."""
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self.placeholder_styles: Dict[str, Callable[[str], str]] = {
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'default': self._generate_default_placeholder,
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'custom': self._generate_custom_placeholder,
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'detailed': self._generate_detailed_placeholder
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}
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def generate_stub_from_schema(self, schema: Dict[str, Any],
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placeholder_style: str = 'default',
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title: Optional[str] = None) -> str:
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"""
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Generate a markdown stub from a JSON schema dictionary.
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Args:
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schema: JSON schema as dictionary
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placeholder_style: Style of placeholder content ('default', 'custom', 'detailed')
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title: Custom title for the document (overrides schema title)
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Returns:
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Generated markdown content as string
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"""
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# Extract title
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doc_title = title or schema.get('title', DEFAULT_TITLE)
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# Start building the markdown content
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lines = []
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# Extract heading structure from schema
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headings_schema = schema.get('properties', {}).get('headings', {})
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heading_properties = headings_schema.get('properties', {})
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if not heading_properties:
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# Create a minimal document if no heading structure is defined
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lines.append(f"# {doc_title}")
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lines.append("")
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lines.append(self._get_placeholder_content(placeholder_style, "main"))
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lines.append("")
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else:
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# Generate content based on heading structure
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lines.extend(self._generate_content_from_headings(
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heading_properties, doc_title, placeholder_style
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))
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return '\n'.join(lines)
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def generate_stub_from_file(self, schema_file: Path) -> str:
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"""
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Generate a markdown stub from a JSON schema file.
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Args:
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schema_file: Path to JSON schema file
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Returns:
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Generated markdown content as string
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Raises:
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FileNotFoundError: If schema file doesn't exist
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json.JSONDecodeError: If schema file contains invalid JSON
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"""
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if not schema_file.exists():
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raise FileNotFoundError(f"Schema file not found: {schema_file}")
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with open(schema_file, 'r', encoding='utf-8') as f:
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schema = json.load(f)
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return self.generate_stub_from_schema(schema)
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def generate_stub_to_file(self, schema: Dict[str, Any],
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output_file: Path,
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placeholder_style: str = 'default',
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title: Optional[str] = None) -> None:
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"""
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Generate a markdown stub and save it to a file.
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Args:
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schema: JSON schema as dictionary
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output_file: Path where to save the generated markdown
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placeholder_style: Style of placeholder content
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title: Custom title for the document
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"""
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content = self.generate_stub_from_schema(schema, placeholder_style, title)
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# Ensure parent directory exists
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output_file.parent.mkdir(parents=True, exist_ok=True)
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with open(output_file, 'w', encoding='utf-8') as f:
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f.write(content)
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def _generate_content_from_headings(self, heading_properties: Dict[str, Any],
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doc_title: str, placeholder_style: str) -> List[str]:
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"""Generate markdown content from heading structure."""
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lines = []
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# Sort heading levels to ensure proper hierarchy
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levels = sorted([key for key in heading_properties.keys() if key.startswith(LEVEL_KEY_PREFIX)])
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# Calculate heading counts for each level
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heading_counts = self._calculate_heading_counts(levels, heading_properties)
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# Generate the content with proper hierarchy
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if 1 in heading_counts:
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# Start with H1
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lines.append(f"# {doc_title}")
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lines.append("")
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lines.append(self._get_placeholder_content(placeholder_style, "introduction"))
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lines.append("")
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# Generate H2+ headings
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for level in sorted(heading_counts.keys()):
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if level == 1:
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continue # Already handled
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count = heading_counts[level]
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for i in range(count):
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heading_prefix = '#' * level
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section_name = self._generate_section_name(level, i + 1)
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lines.append(f"{heading_prefix} {section_name}")
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lines.append("")
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lines.append(self._get_placeholder_content(placeholder_style, f"section_level_{level}"))
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lines.append("")
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else:
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# No H1, start with whatever level is available
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for level in sorted(heading_counts.keys()):
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count = heading_counts[level]
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for i in range(count):
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heading_prefix = '#' * level
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if level == min(heading_counts.keys()) and i == 0:
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section_name = doc_title
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else:
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section_name = self._generate_section_name(level, i + 1)
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lines.append(f"{heading_prefix} {section_name}")
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lines.append("")
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lines.append(self._get_placeholder_content(placeholder_style, f"section_level_{level}"))
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lines.append("")
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return lines
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def _calculate_heading_counts(self, levels: List[str], heading_properties: Dict[str, Any]) -> Dict[int, int]:
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"""Calculate the required count for each heading level."""
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heading_counts = {}
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for level_key in levels:
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level_num = int(level_key.split('_')[1])
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level_props = heading_properties[level_key]
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# Get the required count from minItems/maxItems
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min_items = level_props.get('minItems', 1)
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max_items = level_props.get('maxItems', min_items)
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count = min_items # Use minimum required count
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heading_counts[level_num] = count
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return heading_counts
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def _generate_section_name(self, level: int, index: int) -> str:
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"""Generate appropriate section names based on level and index."""
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section_names = {
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2: ['Introduction', 'Main Content', 'Conclusion', 'Summary', 'Overview'],
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3: ['Background', 'Analysis', 'Implementation', 'Results', 'Discussion'],
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4: ['Details', 'Examples', 'Notes', 'Additional Info'],
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5: ['Subsection A', 'Subsection B', 'Subsection C'],
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6: ['Item', 'Point', 'Note']
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}
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if level in section_names and index <= len(section_names[level]):
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return section_names[level][index - 1]
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else:
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return f"Section {index}"
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def _get_placeholder_content(self, style: str, section_type: str) -> str:
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"""Get placeholder content based on style and section type."""
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generator = self.placeholder_styles.get(style, self.placeholder_styles['default'])
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return generator(section_type)
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def _generate_default_placeholder(self, section_type: str) -> str:
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"""Generate default placeholder content."""
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return f"TODO: Add content for {section_type} section."
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def _generate_custom_placeholder(self, section_type: str) -> str:
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"""Generate custom style placeholder content."""
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placeholders = {
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"introduction": "Write an engaging introduction that outlines the main topic. Add your content here.",
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"main": "Add your main content here.",
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"section_level_2": "Describe the key points for this section.",
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"section_level_3": "Provide detailed information and examples.",
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"section_level_4": "Include specific details and supporting information.",
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}
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return placeholders.get(section_type, f"Content for {section_type} goes here.")
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def _generate_detailed_placeholder(self, section_type: str) -> str:
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"""Generate detailed placeholder content with guidance."""
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detailed_placeholders = {
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"introduction": """<!-- Introduction Section -->
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Write an engaging introduction that:
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- Introduces the main topic
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- Provides context and background
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- Outlines what the reader will learn
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TODO: Replace this placeholder with your introduction content.""",
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"main": """<!-- Main Content Section -->
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This is the primary content area. Consider including:
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- Key information and concepts
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- Supporting details and examples
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- Clear explanations and analysis
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TODO: Add your main content here.""",
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"section_level_2": """<!-- Section Content -->
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This section should cover:
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- Main points related to the section topic
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- Supporting information and details
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- Examples or case studies if relevant
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TODO: Add content for this section.""",
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"section_level_3": """<!-- Subsection Content -->
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Provide detailed information including:
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- Specific details and explanations
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- Examples and illustrations
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- References to related concepts
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TODO: Add detailed content for this subsection.""",
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}
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return detailed_placeholders.get(
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section_type,
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f"<!-- {section_type.title()} Section -->\nTODO: Add content for {section_type}."
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)
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