"""
Clean Document Manager - Simplified version with only clean editor support
"""
import json
import re
from pathlib import Path
from typing import Dict, Any, Optional


class CleanDocumentManager:
    """
    Simplified document manager that only supports the clean editor implementation.
    All legacy code has been removed for clarity and maintainability.
    """

    def __init__(self, db_manager=None):
        self.db_manager = db_manager

    def store_document(self, file_path: str, content: str, ast: list = None, front_matter: dict = None):
        """Store a document in the database."""
        if self.db_manager:
            from pathlib import Path
            filename = Path(file_path).name
            return self.db_manager.store_markdown_file(filename, content)

    def get_file(self, file_path: str) -> Dict[str, Any]:
        """
        Retrieve a markdown file from the database.

        Args:
            file_path: Path to the markdown file to retrieve

        Returns:
            Dictionary containing file content and metadata

        Raises:
            FileNotFoundError: If file is not found in database
        """
        if not self.db_manager:
            raise ValueError("Database manager not initialized")

        # Get file from database
        file_data = self.db_manager.get_markdown_file(file_path)

        if file_data is None:
            raise FileNotFoundError(f"File '{file_path}' not found in database")

        return {
            'content': file_data.get('content', ''),
            'metadata': {
                'filename': file_data.get('filename', file_path),
                'front_matter': file_data.get('front_matter'),
                'size': len(file_data.get('content', '')),
                'modified': file_data.get('modified')
            }
        }

    def render_file(self, input_file: str, output_file: str, template: str = None, css: str = None,
                   edit_mode: bool = False, insert_mode: bool = False, editor_theme: str = 'github', keyboard_shortcuts: bool = True, nodogtag: bool = False,
                   image_max_width: str = '12cm', image_max_height: str = '20cm') -> Dict[str, Any]:
        """
        Render a markdown file to HTML with optional clean editing capabilities.
        """
        input_path = Path(input_file)
        output_path = Path(output_file)

        if not input_path.exists():
            raise FileNotFoundError(f"Input file not found: {input_file}")

        # Read markdown content
        raw_markdown_content = input_path.read_text(encoding='utf-8')

        # Process base64 images - relocate payloads to document end
        markdown_content, base64_references = self._process_base64_images(raw_markdown_content)

        # Extract title from markdown (first h1 heading)
        title = self._extract_title_from_markdown(markdown_content)

        # Get original filename without extension
        original_filename = input_path.stem

        # Get version information
        version_info = self._get_version_info()

        # Generate HTML content
        html_content = self._generate_html_template(
            markdown_content=markdown_content,
            title=title,
            css=css,
            template=template,
            edit_mode=edit_mode,
            insert_mode=insert_mode,
            editor_theme=editor_theme,
            keyboard_shortcuts=keyboard_shortcuts,
            original_filename=original_filename,
            version_info=version_info,
            nodogtag=nodogtag,
            image_max_width=image_max_width,
            image_max_height=image_max_height,
            base64_references=base64_references
        )

        # Write HTML file
        output_path.parent.mkdir(parents=True, exist_ok=True)
        output_path.write_text(html_content, encoding='utf-8')

        return {
            'success': True,
            'input_file': str(input_path),
            'output_file': str(output_path),
            'edit_mode': edit_mode,
            'editor_theme': editor_theme
        }

    def _extract_title_from_markdown(self, markdown_content: str) -> str:
        """Extract title from first h1 heading in markdown."""
        match = re.search(r'^#\s+(.+)', markdown_content, re.MULTILINE)
        if match:
            return match.group(1).strip()
        return "Markdown Document"

    def _process_base64_images(self, markdown_content: str) -> tuple:
        """
        Process base64 encoded images in markdown content.

        - Extracts base64 image data URLs
        - Replaces them with reference links
        - Returns processed content and reference mapping

        Returns:
            tuple: (processed_markdown, base64_references_dict)
        """
        import re
        import uuid

        # Pattern to match base64 image data URLs
        base64_pattern = r'!\[([^\]]*)\]\(data:image/([^;]+);base64,([^)]+)\)'

        base64_references = {}
        reference_definitions = []
        processed_content = markdown_content

        # Find all base64 images
        matches = list(re.finditer(base64_pattern, markdown_content))

        for i, match in enumerate(matches):
            alt_text = match.group(1)
            image_type = match.group(2)  # png, jpeg, svg+xml, etc.
            base64_data = match.group(3)

            # Generate a unique reference ID
            ref_id = f"base64-image-{i+1}"

            # Store the mapping
            base64_references[ref_id] = {
                'alt': alt_text,
                'type': image_type,
                'data': base64_data,
                'full_data_url': f"data:image/{image_type};base64,{base64_data}"
            }

            # Replace the inline base64 with reference
            original_match = match.group(0)
            reference_link = f"![{alt_text}][{ref_id}]"
            processed_content = processed_content.replace(original_match, reference_link, 1)

            # Create reference definition for the end of document
            reference_definitions.append(f"[{ref_id}]: data:image/{image_type};base64,{base64_data}")

        # Add reference definitions to the end of the document if any base64 images were found
        if reference_definitions:
            # Ensure there's a blank line before the references
            if not processed_content.endswith('\n\n'):
                if processed_content.endswith('\n'):
                    processed_content += '\n'
                else:
                    processed_content += '\n\n'

            # Add a comment to indicate the base64 reference section
            processed_content += "<!-- Base64 Image References -->\n"
            processed_content += '\n'.join(reference_definitions) + '\n'

        return processed_content, base64_references

    def _get_version_info(self) -> dict:
        """Get repository name and version information."""
        from .__version__ import get_version_info

        version_info = get_version_info()

        # Transform to the format expected by the editor
        return {
            'repo_name': 'Markitect',
            'version': version_info['full_version'],
            'git_info': ''  # Already included in full_version
        }

    def _get_template_css(self, template: str = None, image_max_width: str = '12cm', image_max_height: str = '20cm') -> str:
        """Generate layered theme CSS styles."""
        # Import layered theme functions
        from markitect.plugins.builtin.markdown_commands import (
            parse_theme_string, combine_theme_properties, TEMPLATE_STYLES
        )

        # Handle layered themes or fall back to legacy
        if template and ',' in template:
            # New layered theme system
            theme_list = parse_theme_string(template)
            combined_props = combine_theme_properties(theme_list)
            return self._generate_layered_css(combined_props, image_max_width, image_max_height)
        else:
            # Legacy single theme or fallback
            if not template or template not in TEMPLATE_STYLES:
                # Use default layered themes or the specified theme
                theme_list = parse_theme_string(template or 'basic')
                combined_props = combine_theme_properties(theme_list)
                return self._generate_layered_css(combined_props, image_max_width, image_max_height)
            else:
                # Legacy theme - convert to layered
                theme_list = parse_theme_string(template)
                combined_props = combine_theme_properties(theme_list)
                return self._generate_layered_css(combined_props, image_max_width, image_max_height)

    def _generate_layered_css(self, properties: dict, image_max_width: str = '12cm', image_max_height: str = '20cm') -> str:
        """Generate CSS from combined theme properties."""

        # Set defaults for missing properties (properties override defaults)
        defaults = {
            'body_background': '#ffffff',
            'body_color': '#333333',
            'font_family': '-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif',
            'max_width': '800px',
            'heading_color': '#333333',  # Use same as body color by default
            'heading_style': 'simple',
            'text_align': 'left',
            'code_background': '#f6f8fa',
            'code_color': '#333333',
            'border_color': '#d0d7de',
            'blockquote_border': '#dfe2e5',
            'blockquote_color': '#6a737d',
            'table_border': '#d0d7de',
            'table_header_bg': '#f6f8fa',
            'accent_color': None,
            'secondary_color': None
        }

        # Merge defaults first, then override with theme properties
        props = {**defaults, **properties}

        # Base CSS
        base_css = f"""
            body {{
                font-family: {props['font_family']};
                max-width: {props['max_width']};
                margin: 0 auto;
                padding: 2rem;
                line-height: 1.6;
                color: {props['body_color']};
                background-color: {props['body_background']};
            }}
            #markdown-content {{
                min-height: 200px;
            }}"""

        # Heading styles
        heading_css = ""
        if props['heading_style'] == 'underlined':
            heading_css = f"""
            h1, h2, h3, h4, h5, h6 {{
                color: {props['heading_color']};
                border-bottom: 1px solid {props['border_color']};
                padding-bottom: 0.3em;
            }}"""
        elif props['heading_style'] == 'centered':
            heading_css = f"""
            h1, h2, h3, h4, h5, h6 {{
                color: {props['heading_color']};
                margin-top: 2rem;
                margin-bottom: 1rem;
            }}
            h1 {{
                text-align: center;
                font-size: 2.2em;
                border-bottom: 2px solid {props['heading_color']};
                padding-bottom: 0.5rem;
            }}"""
        else:  # simple
            heading_css = f"""
            h1, h2, h3, h4, h5, h6 {{
                color: {props['heading_color']};
            }}"""

        # Text alignment
        text_css = ""
        if props['text_align'] == 'justify':
            text_css = """
            p {
                text-align: justify;
                margin-bottom: 1.2rem;
            }"""

        # Element styling
        element_css = f"""
            pre {{
                background-color: {props['code_background']};
                color: {props['code_color']};
                padding: 1rem;
                border-radius: 6px;
                overflow-x: auto;
                border: 1px solid {props['border_color']};
            }}
            code {{
                background-color: {props['code_background']};
                color: {props['code_color']};
                padding: 0.2em 0.4em;
                border-radius: 3px;
                font-size: 0.9em;
            }}
            pre code {{
                background: none;
                padding: 0;
            }}
            blockquote {{
                border-left: 4px solid {props['blockquote_border']};
                margin: 0;
                padding-left: 1rem;
                color: {props['blockquote_color']};
            }}
            table {{
                font-size: 0.85em;
                border-collapse: collapse;
                margin: 1rem 0;
                width: 100%;
                border: 1px solid {props['table_border']};
            }}
            th, td {{
                font-size: inherit;
                border: 1px solid {props['table_border']};
                padding: 0.5rem;
                text-align: left;
            }}
            th {{
                background-color: {props['table_header_bg']};
                font-weight: 600;
            }}"""

        # Link styling
        link_css = ""
        if props.get('link_color'):
            link_css = f"""
            a {{
                color: {props['link_color']};
                text-decoration: underline;
            }}"""
            if props.get('link_hover_color'):
                link_css += f"""
            a:hover {{
                color: {props['link_hover_color']};
            }}"""
            else:
                link_css += """
            a:hover {
                opacity: 0.8;
            }"""

        # Branding accents (if specified and no link_color already set)
        accent_css = ""
        if props.get('accent_color') and not props.get('link_color'):
            accent_css = f"""
            a {{
                color: {props['accent_color']};
            }}
            a:hover {{
                opacity: 0.8;
            }}"""

        # UI theme styling for editor interface elements
        ui_css = ""
        if props.get('editor_panel_bg'):
            ui_css = f"""
            .markitect-edit-mode .ui-edit-floater-panel {{
                background: {props['editor_panel_bg']};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                box-shadow: 0 4px 12px {props.get('editor_shadow', 'rgba(0,0,0,0.1)')};
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-edit-mode .ui-edit-floater-header {{
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-edit-mode .ui-edit-floater-header h3 {{
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-edit-mode .ui-edit-inline-panel {{
                background: {props['editor_panel_bg']};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                box-shadow: 0 2px 8px {props.get('editor_shadow', 'rgba(0,0,0,0.1)')};
                color: {props.get('editor_text_color', '#212529')};
                border-radius: 8px;
                padding: 12px;
                margin: 8px 0;
            }}
            .markitect-edit-mode .ui-edit-button {{
                background: {props.get('editor_button_bg', '#ffffff')};
                color: {props.get('editor_text_color', '#212529')};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                padding: 8px 12px;
                border-radius: 4px;
                cursor: pointer;
                font-size: 12px;
                min-width: 70px;
                font-weight: 500;
                transition: all 0.2s;
            }}
            .markitect-edit-mode .ui-edit-button:hover {{
                background: {props.get('editor_button_hover', '#e9ecef')};
            }}
            .markitect-edit-mode .ui-edit-button:active,
            .markitect-edit-mode .ui-edit-button.active {{
                background: {props.get('editor_button_active', '#dee2e6')};
            }}
            .markitect-edit-mode .ui-edit-button-accept {{
                background: {props.get('editor_accept_bg', '#4caf50')};
                color: white;
            }}
            .markitect-edit-mode .ui-edit-button-accept:hover {{
                background: {props.get('editor_accept_hover', '#388e3c')};
            }}
            .markitect-edit-mode .ui-edit-button-cancel {{
                background: {props.get('editor_cancel_bg', '#f44336')};
                color: white;
            }}
            .markitect-edit-mode .ui-edit-button-cancel:hover {{
                background: {props.get('editor_cancel_hover', '#d32f2f')};
            }}
            .markitect-edit-mode .ui-edit-button-reset {{
                background: {props.get('editor_reset_bg', '#ff9800')};
                color: white;
            }}
            .markitect-edit-mode .ui-edit-button-reset:hover {{
                background: {props.get('editor_reset_hover', '#f57c00')};
            }}
            .markitect-edit-mode .ui-edit-button-secondary {{
                background: {props.get('editor_secondary_bg', '#6c757d')};
                color: white;
            }}
            .markitect-edit-mode .ui-edit-button-secondary:hover {{
                background: {props.get('editor_secondary_hover', '#545b62')};
            }}
            .markitect-edit-mode .ui-edit-section-frame {{
                border: 2px solid {props.get('editor_focus_color', props.get('editor_panel_border', '#dee2e6'))};
                box-shadow: 0 0 0 3px {props.get('editor_focus_color', props.get('editor_panel_border', '#dee2e6'))}33;
            }}
            .markitect-edit-mode .ui-edit-textarea {{
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                color: {props.get('editor_text_color', '#212529')};
                background: {props.get('editor_button_bg', '#ffffff')};
            }}
            .markitect-edit-mode .ui-edit-textarea:focus {{
                border-color: {props.get('editor_focus_color', props.get('editor_panel_border', '#dee2e6'))};
                box-shadow: 0 0 0 2px {props.get('editor_focus_color', props.get('editor_panel_border', '#dee2e6'))}33;
            }}
            .markitect-edit-mode .ui-edit-modal-overlay {{
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.5);
                z-index: 999;
                display: flex;
                align-items: center;
                justify-content: center;
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.3s, visibility 0.3s;
            }}
            .markitect-edit-mode .ui-edit-modal-overlay.active {{
                opacity: 1;
                visibility: visible;
            }}
            .markitect-edit-mode .ui-edit-modal {{
                background: {props['editor_panel_bg']};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                box-shadow: 0 8px 32px {props.get('editor_shadow', 'rgba(0,0,0,0.2)')};
                color: {props.get('editor_text_color', '#212529')};
                border-radius: 8px;
                max-width: 600px;
                max-height: 80vh;
                width: 90%;
                overflow: hidden;
                transform: scale(0.9) translateY(-20px);
                transition: transform 0.3s;
            }}
            .markitect-edit-mode .ui-edit-modal-overlay.active .ui-edit-modal {{
                transform: scale(1) translateY(0);
            }}
            .markitect-edit-mode .ui-edit-modal-header {{
                padding: 20px 24px 16px;
                border-bottom: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                display: flex;
                justify-content: space-between;
                align-items: center;
            }}
            .markitect-edit-mode .ui-edit-modal-title {{
                margin: 0;
                font-size: 18px;
                font-weight: 600;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-edit-mode .ui-edit-modal-close {{
                background: none;
                border: none;
                font-size: 24px;
                cursor: pointer;
                color: {props.get('editor_text_color', '#212529')};
                padding: 4px;
                border-radius: 4px;
                width: 32px;
                height: 32px;
                display: flex;
                align-items: center;
                justify-content: center;
                transition: background-color 0.2s;
            }}
            .markitect-edit-mode .ui-edit-modal-close:hover {{
                background: {props.get('editor_button_hover', '#e9ecef')};
            }}
            .markitect-edit-mode .ui-edit-modal-body {{
                padding: 20px 24px;
                overflow-y: auto;
                max-height: 60vh;
            }}
            .markitect-edit-mode .ui-edit-modal-content {{
                white-space: pre-line;
                line-height: 1.5;
                font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
                font-size: 14px;
            }}
            .markitect-edit-mode .ui-edit-modal-section {{
                margin-bottom: 16px;
            }}
            .markitect-edit-mode .ui-edit-modal-section:last-child {{
                margin-bottom: 0;
            }}
            .markitect-edit-mode .ui-edit-modal-section-title {{
                font-weight: 600;
                margin-bottom: 8px;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-edit-mode .ui-edit-modal-footer {{
                padding: 16px 24px 20px;
                border-top: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                text-align: right;
            }}

            /* Confirmation Dialog Styles */
            .markitect-edit-mode .ui-edit-confirmation-modal {{
                max-width: 500px;
            }}
            .markitect-edit-mode .ui-edit-confirmation-content {{
                font-size: 16px;
                line-height: 1.5;
                margin-bottom: 24px;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-edit-mode .ui-edit-confirmation-warning {{
                background: {props.get('editor_warning_bg', '#fff3cd')};
                border: 1px solid {props.get('editor_warning_border', '#ffeaa7')};
                color: {props.get('editor_warning_text', '#856404')};
                padding: 12px 16px;
                border-radius: 6px;
                margin: 16px 0;
                font-size: 14px;
            }}
            .markitect-edit-mode .ui-edit-confirmation-buttons {{
                display: flex;
                gap: 12px;
                justify-content: flex-end;
            }}
            .markitect-edit-mode .ui-edit-button-confirm {{
                background: {props.get('editor_danger_button', '#dc3545')};
                color: white;
                border: none;
                padding: 10px 20px;
                border-radius: 6px;
                font-size: 14px;
                font-weight: 500;
                cursor: pointer;
                transition: background-color 0.2s, transform 0.1s;
            }}
            .markitect-edit-mode .ui-edit-button-confirm:hover {{
                background: {props.get('editor_danger_button_hover', '#c82333')};
                transform: translateY(-1px);
            }}
            .markitect-edit-mode .ui-edit-button-confirm:active {{
                transform: translateY(0);
            }}
            .markitect-edit-mode .ui-edit-button-confirm:focus {{
                outline: 2px solid {props.get('editor_focus_color', '#007bff')};
                outline-offset: 2px;
            }}
            .markitect-edit-mode .ui-edit-button-cancel {{
                background: {props.get('editor_secondary_button', '#6c757d')};
                color: white;
                border: none;
                padding: 10px 20px;
                border-radius: 6px;
                font-size: 14px;
                font-weight: 500;
                cursor: pointer;
                transition: background-color 0.2s, transform 0.1s;
            }}
            .markitect-edit-mode .ui-edit-button-cancel:hover {{
                background: {props.get('editor_secondary_button_hover', '#545b62')};
                transform: translateY(-1px);
            }}
            .markitect-edit-mode .ui-edit-button-cancel:active {{
                transform: translateY(0);
            }}
            .markitect-edit-mode .ui-edit-button-cancel:focus {{
                outline: 2px solid {props.get('editor_focus_color', '#007bff')};
                outline-offset: 2px;
            }}

            /* Document Scroll Indicators */
            .ui-scroll-indicator {{
                position: fixed;
                left: 50%;
                transform: translateX(-50%);
                width: 60px;
                height: 30px;
                background: {props.get('editor_panel_bg', '#f8f9fa')};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                border-radius: 15px;
                display: flex;
                align-items: center;
                justify-content: center;
                cursor: pointer;
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease, background-color 0.2s ease;
                z-index: 1000;
                box-shadow: 0 4px 12px {props.get('editor_shadow', 'rgba(0,0,0,0.15)')};
            }}
            .ui-scroll-indicator:hover {{
                transform: translateX(-50%) scale(1.05);
            }}
            .ui-scroll-indicator:not(.disabled):hover {{
                background: {props.get('editor_button_hover', '#e9ecef')};
            }}
            .ui-scroll-indicator.active {{
                opacity: 0.9;
                visibility: visible;
            }}
            .ui-scroll-indicator.disabled {{
                background: {props.get('editor_button_active', '#dee2e6')};
                cursor: not-allowed;
                opacity: 0.6;
            }}
            .ui-scroll-indicator.disabled:hover {{
                transform: translateX(-50%);
                background: {props.get('editor_button_active', '#dee2e6')};
            }}
            .ui-scroll-indicator-up {{
                top: 20px;
            }}
            .ui-scroll-indicator-down {{
                bottom: 20px;
            }}
            .ui-scroll-indicator::before {{
                content: '';
                width: 0;
                height: 0;
                border-style: solid;
                transition: border-color 0.2s ease;
            }}
            .ui-scroll-indicator-up::before {{
                border-left: 8px solid transparent;
                border-right: 8px solid transparent;
                border-bottom: 12px solid {props.get('editor_text_color', '#212529')};
            }}
            .ui-scroll-indicator-down::before {{
                border-left: 8px solid transparent;
                border-right: 8px solid transparent;
                border-top: 12px solid {props.get('editor_text_color', '#212529')};
            }}
            .ui-scroll-indicator.disabled.ui-scroll-indicator-up::before {{
                border-bottom-color: {props.get('editor_secondary_button', '#6c757d')};
            }}
            .ui-scroll-indicator.disabled.ui-scroll-indicator-down::before {{
                border-top-color: {props.get('editor_secondary_button', '#6c757d')};
            }}

            /* Insert Mode Specific Styles */
            .markitect-insert-mode .ui-edit-floater-panel {{
                background: {props['editor_panel_bg']};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                box-shadow: 0 4px 12px {props.get('editor_shadow', 'rgba(0,0,0,0.1)')};
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-floater-header {{
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-floater-header h3 {{
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-inline-panel {{
                background: {props['editor_panel_bg']};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                box-shadow: 0 2px 8px {props.get('editor_shadow', 'rgba(0,0,0,0.1)')};
                color: {props.get('editor_text_color', '#212529')};
                border-radius: 8px;
                padding: 12px;
                margin: 8px 0;
            }}
            .markitect-insert-mode .ui-insert-protected-panel {{
                border-left: 4px solid #ff9800;
            }}
            .markitect-insert-mode .ui-insert-heading-display {{
                font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
                font-size: 14px;
                font-weight: bold;
                padding: 8px 12px;
                background: {props.get('editor_warning_bg', '#fff3cd')};
                border: 1px solid {props.get('editor_warning_border', '#ffeaa7')};
                border-radius: 4px;
                border-left: 4px solid #007bff;
                color: {props.get('editor_warning_text', '#856404')};
                margin-bottom: 8px;
            }}
            .markitect-insert-mode .ui-insert-content-editor {{
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                color: {props.get('editor_text_color', '#212529')};
                background: {props.get('editor_button_bg', '#ffffff')};
            }}
            .markitect-insert-mode .ui-insert-content-editor:focus {{
                border-color: {props.get('editor_focus_color', '#007bff')};
                box-shadow: 0 0 0 2px {props.get('editor_focus_color', '#007bff')}33;
            }}
            .markitect-insert-mode .ui-edit-button {{
                background: {props.get('editor_button_bg', '#ffffff')};
                color: {props.get('editor_text_color', '#212529')};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                padding: 8px 12px;
                border-radius: 4px;
                cursor: pointer;
                font-size: 12px;
                min-width: 70px;
                font-weight: 500;
                transition: all 0.2s;
            }}
            .markitect-insert-mode .ui-edit-button:hover {{
                background: {props.get('editor_button_hover', '#e9ecef')};
            }}
            .markitect-insert-mode .ui-edit-button:active,
            .markitect-insert-mode .ui-edit-button.active {{
                background: {props.get('editor_button_active', '#dee2e6')};
            }}
            .markitect-insert-mode .ui-edit-button-accept {{
                background: #4caf50;
                color: white;
            }}
            .markitect-insert-mode .ui-edit-button-accept:hover {{
                background: #388e3c;
            }}
            .markitect-insert-mode .ui-edit-button-cancel {{
                background: #f44336;
                color: white;
            }}
            .markitect-insert-mode .ui-edit-button-cancel:hover {{
                background: #d32f2f;
            }}
            .markitect-insert-mode .ui-edit-button-reset {{
                background: #ff9800;
                color: white;
            }}
            .markitect-insert-mode .ui-edit-button-reset:hover {{
                background: #f57c00;
            }}
            .markitect-insert-mode .ui-edit-section-frame {{
                border: 2px solid {props.get('editor_focus_color', '#007bff')};
                box-shadow: 0 0 0 3px {props.get('editor_focus_color', '#007bff')}33;
            }}

            /* Modal Overlay and Dialog Styles for Insert Mode */
            .markitect-insert-mode .ui-edit-modal-overlay {{
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.5);
                z-index: 999;
                display: flex;
                align-items: center;
                justify-content: center;
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.3s, visibility 0.3s;
            }}
            .markitect-insert-mode .ui-edit-modal-overlay.active {{
                opacity: 1;
                visibility: visible;
            }}
            .markitect-insert-mode .ui-edit-modal {{
                background: {props['editor_panel_bg']};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                box-shadow: 0 8px 32px {props.get('editor_shadow', 'rgba(0,0,0,0.2)')};
                color: {props.get('editor_text_color', '#212529')};
                border-radius: 8px;
                max-width: 600px;
                max-height: 80vh;
                width: 90%;
                overflow: hidden;
                transform: scale(0.9) translateY(-20px);
                transition: transform 0.3s;
            }}
            .markitect-insert-mode .ui-edit-modal-overlay.active .ui-edit-modal {{
                transform: scale(1) translateY(0);
            }}
            .markitect-insert-mode .ui-edit-modal-header {{
                padding: 20px 24px 16px;
                border-bottom: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                display: flex;
                justify-content: space-between;
                align-items: center;
            }}
            .markitect-insert-mode .ui-edit-modal-title {{
                margin: 0;
                font-size: 18px;
                font-weight: 600;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-modal-close {{
                background: transparent;
                border: none;
                font-size: 24px;
                cursor: pointer;
                color: {props.get('editor_text_color', '#212529')};
                padding: 0;
                width: 32px;
                height: 32px;
                display: flex;
                align-items: center;
                justify-content: center;
                border-radius: 4px;
                transition: background-color 0.2s;
            }}
            .markitect-insert-mode .ui-edit-modal-close:hover {{
                background: {props.get('editor_button_hover', '#e9ecef')};
            }}
            .markitect-insert-mode .ui-edit-modal-body {{
                padding: 20px 24px;
                max-height: 400px;
                overflow-y: auto;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-modal-section {{
                margin-bottom: 8px;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-modal-footer {{
                padding: 16px 24px 20px;
                border-top: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                text-align: right;
            }}

            /* Confirmation Dialog Styles for Insert Mode */
            .markitect-insert-mode .ui-edit-confirmation-modal {{
                max-width: 500px;
            }}
            .markitect-insert-mode .ui-edit-confirmation-content {{
                font-size: 16px;
                line-height: 1.5;
                margin-bottom: 24px;
                color: {props.get('editor_text_color', '#212529')};
            }}
            .markitect-insert-mode .ui-edit-confirmation-warning {{
                background: {props.get('editor_warning_bg', '#fff3cd')};
                color: {props.get('editor_warning_text', '#856404')};
                border: 1px solid {props.get('editor_warning_border', '#ffeaa7')};
                border-radius: 6px;
                padding: 12px 16px;
                margin: 16px 0;
                font-size: 14px;
                line-height: 1.4;
            }}
            .markitect-insert-mode .ui-edit-confirmation-buttons {{
                display: flex;
                gap: 12px;
                justify-content: flex-end;
                margin-top: 24px;
            }}
            .markitect-insert-mode .ui-edit-button-confirm {{
                background: #dc3545;
                color: white;
                border: 1px solid #dc3545;
                padding: 10px 20px;
                border-radius: 6px;
                font-size: 14px;
                font-weight: 500;
                cursor: pointer;
                transition: all 0.2s;
            }}
            .markitect-insert-mode .ui-edit-button-confirm:hover {{
                background: #c82333;
                border-color: #bd2130;
            }}
            .markitect-insert-mode .ui-edit-button-cancel {{
                background: {props.get('editor_button_bg', '#ffffff')};
                color: {props.get('editor_text_color', '#212529')};
                border: 1px solid {props.get('editor_panel_border', '#dee2e6')};
                padding: 10px 20px;
                border-radius: 6px;
                font-size: 14px;
                font-weight: 500;
                cursor: pointer;
                transition: all 0.2s;
            }}
            .markitect-insert-mode .ui-edit-button-cancel:hover {{
                background: {props.get('editor_button_hover', '#e9ecef')};
            }}
            """

        # Image size CSS with configurable limits
        image_css = f"""
            img {{
                max-width: {image_max_width};
                max-height: {image_max_height};
                height: auto;
                display: block;
                margin: 1rem auto;
            }}"""

        return f"<style>{base_css}{heading_css}{text_css}{element_css}{link_css}{accent_css}{ui_css}{image_css}</style>"

    def _get_legacy_template_css(self, template: str, image_max_width: str = '12cm', image_max_height: str = '20cm') -> str:
        """Legacy CSS generation - kept for backward compatibility."""
        # Import template styles
        from markitect.plugins.builtin.markdown_commands import TEMPLATE_STYLES

        # Use basic as default if no template specified
        if not template or template not in TEMPLATE_STYLES:
            template = 'basic'

        style_config = TEMPLATE_STYLES[template]

        # Base CSS that's common to all templates
        base_css = f"""
            body {{
                font-family: {style_config['font_family']};
                max-width: {style_config['max_width']};
                margin: 0 auto;
                padding: 2rem;
                line-height: 1.6;
                color: {style_config['body_color']};
            }}
            #markdown-content {{
                min-height: 200px;
            }}"""

        # Convert legacy template config to layered format
        legacy_config = TEMPLATE_STYLES[template]
        layered_props = {
            'font_family': legacy_config['font_family'],
            'max_width': legacy_config['max_width'],
            'body_color': legacy_config['body_color'],
        }
        return self._generate_layered_css(layered_props, image_max_width, image_max_height)

    def _generate_html_template(self, markdown_content: str, title: str, css: str = None, template: str = None,
                              edit_mode: bool = False, insert_mode: bool = False, editor_theme: str = 'github', keyboard_shortcuts: bool = True, original_filename: str = 'document', version_info: dict = None, nodogtag: bool = False,
                              image_max_width: str = '12cm', image_max_height: str = '20cm', base64_references: dict = None) -> str:
        """Generate clean HTML template."""

        # Add dogtag to markdown content if not disabled
        if not nodogtag:
            import datetime
            import getpass

            now = datetime.datetime.now()
            datetime_str = now.strftime("%Y-%m-%d %H:%M:%S")
            try:
                username = getpass.getuser()
            except:
                username = "user"

            # Create username link only for 'worsch', otherwise just show username
            if username == 'worsch':
                username_link = f'<a href="https://coulomb.social/open/worsch" target="_blank">{username}</a>'
            else:
                username_link = username

            dogtag = f'\n\n---\n*-- html from markdown by <a href="https://coulomb.social/open/MarkiTect" target="_blank">MarkiTect</a> on {datetime_str} by {username_link}*'
            markdown_content_with_dogtag = markdown_content + dogtag
        else:
            markdown_content_with_dogtag = markdown_content
            dogtag = ""

        # Pass original markdown content to editor (without dogtag for editing)
        # But make dogtag available separately for protected display in editor
        js_markdown_content = json.dumps(markdown_content)
        js_markdown_content_with_dogtag = json.dumps(markdown_content_with_dogtag)
        js_dogtag_content = json.dumps(dogtag)
        js_base64_references = json.dumps(base64_references or {})

        # Handle CSS styles
        css_content = ""
        if css:
            try:
                css_path = Path(css)
                if css_path.exists():
                    css_file_content = css_path.read_text(encoding='utf-8')
                    css_content = f"<style>\n{css_file_content}\n</style>"
                else:
                    css_content = f'<link rel="stylesheet" href="{css}">'
            except Exception:
                css_content = f'<link rel="stylesheet" href="{css}">'

        # Generate template-specific CSS
        default_css = self._get_template_css(template, image_max_width, image_max_height)

        # Load clean editor JavaScript files
        editor_scripts = ""
        editor_config = ""
        body_classes = ""

        if edit_mode:
            body_classes = ' class="markitect-edit-mode"'

            # Configuration for clean editor
            version_str = f"{version_info['repo_name']} v{version_info['version']}{version_info['git_info']}" if version_info else "Markitect v0.5.0.dev"
            editor_config = f"""
        const MARKITECT_EDIT_MODE = true;
        const MARKITECT_EDITOR_CONFIG = {{
            mode: 'edit',
            theme: '{editor_theme}',
            keyboardShortcuts: {str(keyboard_shortcuts).lower()},
            autosave: false,
            sections: true,
            originalFilename: '{original_filename}',
            version: '{version_str}',
            repoName: '{version_info['repo_name'] if version_info else 'Markitect'}'
        }};

        // Make config available globally
        window.editorConfig = MARKITECT_EDITOR_CONFIG;"""
        elif insert_mode:
            body_classes = ' class="markitect-insert-mode"'

            # Configuration for insert mode editor
            version_str = f"{version_info['repo_name']} v{version_info['version']}{version_info['git_info']}" if version_info else "Markitect v0.5.0.dev"
            editor_config = f"""
        const MARKITECT_INSERT_MODE = true;
        const MARKITECT_EDITOR_CONFIG = {{
            mode: 'insert',
            restrictedHeadingLevels: [1, 2, 3],
            theme: '{editor_theme}',
            keyboardShortcuts: {str(keyboard_shortcuts).lower()},
            autosave: false,
            sections: true,
            originalFilename: '{original_filename}',
            version: '{version_str}',
            repoName: '{version_info['repo_name'] if version_info else 'Markitect'}'
        }};

        // Make config available globally
        window.editorConfig = MARKITECT_EDITOR_CONFIG;"""

        # Load clean editor architecture for both edit and insert modes
        if edit_mode or insert_mode:
            editor_scripts = self._get_clean_editor_scripts()
        else:
            editor_scripts = ""

        # Generate the complete HTML template
        html_template = f"""<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>{title}</title>
    {css_content}
    {default_css}

    <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"
            onload="window.markitectMarkedLoaded = true"
            onerror="window.markitectMarkedError = true"></script>
</head>
<body{body_classes}>

    <div id="markdown-content"></div>

    <script>
        const markdownContent = {js_markdown_content};
        const markdownContentWithDogtag = {js_markdown_content_with_dogtag};
        const dogtagContent = {js_dogtag_content};
        window.markitectBase64References = {js_base64_references};
        {editor_config}

        {editor_scripts}

        // Always render content first (graceful degradation)
        document.addEventListener('DOMContentLoaded', function() {{
            console.log("Rendering content...");

            // Check if modular components are being used
            if (typeof SectionManager !== 'undefined') {{
                console.log("✓ Modular components detected - skipping direct content rendering");
                console.log("✓ Content will be rendered by modular architecture");
                return;
            }}

            const contentDiv = document.getElementById('markdown-content');

            // Step 1: Ensure content is always displayed (fallback for non-modular mode)
            if (contentDiv) {{
                if (typeof marked !== 'undefined') {{
                    try {{
                        const html = marked.parse(markdownContentWithDogtag);
                        // Add target="_blank" to all links
                        const htmlWithTargetBlank = html.replace(/<a href="([^"]*)"([^>]*)>/g, '<a href="$1" target="_blank"$2>');
                        contentDiv.innerHTML = htmlWithTargetBlank;
                        console.log("✓ Content rendered successfully");
                        console.log('✓ Markdown rendered successfully');
                    }} catch (error) {{
                        contentDiv.innerHTML = '<p>Error rendering markdown: ' + error.message + '</p>';
                        console.error("Content rendered with errors");
                        console.error("Markdown parsing failed:", error.message);
                    }}
                }} else {{
                    // Fallback: display raw markdown with basic formatting
                    const fallbackHtml = markdownContent
                        .replace(/^# (.*$)/gim, '<h1>$1</h1>')
                        .replace(/^## (.*$)/gim, '<h2>$1</h2>')
                        .replace(/^### (.*$)/gim, '<h3>$1</h3>')
                        .replace(/\\*\\*(.*?)\\*\\*/g, '<strong>$1</strong>')
                        .replace(/\\*(.*?)\\*/g, '<em>$1</em>')
                        .replace(/^- (.*$)/gim, '<li>$1</li>')
                        .replace(/\\n\\n/g, '<br><br>')
                        .replace(/\\n/g, '<br>');
                    contentDiv.innerHTML = '<div style="white-space: pre-wrap;">' + fallbackHtml + '</div>';
                    console.warn("Content rendered with fallback parser");
                    console.warn("CDN library failed to load - using basic fallback rendering");
                }}
            }}

            // Step 2: Initialize edit/insert capabilities if enabled
            if ((typeof MARKITECT_EDIT_MODE !== 'undefined' && MARKITECT_EDIT_MODE) ||
                (typeof MARKITECT_INSERT_MODE !== 'undefined' && MARKITECT_INSERT_MODE)) {{
                const mode = (typeof MARKITECT_INSERT_MODE !== 'undefined' && MARKITECT_INSERT_MODE) ? 'insert' : 'edit';
                console.log(`Initializing clean ${{mode}} capabilities...`);
                try {{
                    console.log("Creating clean editor instance...");
                    initializeCleanEditor();
                    if (mode === 'insert') {{
                        console.log("✓ Clean insert mode active - click any section to edit (headings 1-3 protected)");
                    }} else {{
                        console.log("✓ Clean edit mode active - click any section to edit");
                    }}
                }} catch (error) {{
                    console.error(`Clean ${{mode}} mode failed to initialize:`, error);
                }}
            }}

            // Step 3: Initialize document scroll indicators (always available)
            try {{
                initializeScrollIndicators();
            }} catch (error) {{
                console.error("Scroll indicators failed to initialize:", error);
            }}
        }});

        // Handle CDN loading errors
        window.addEventListener('load', function() {{
            if (window.markitectMarkedError) {{
                console.error("CDN library failed to load - network or firewall blocking marked.js");
            }}
        }});
    </script>
</body>
</html>"""

        return html_template

    def _get_clean_editor_scripts(self) -> str:
        """Load the modular editor JavaScript components from external files."""
        from pathlib import Path

        # Define the modular components to load in order
        components = [
            'js/core/section-manager.js',
            'js/components/debug-panel.js',
            'js/components/document-controls.js',
            'js/components/dom-renderer.js'
        ]

        base_path = Path(__file__).parent / 'static'
        combined_script = []

        # Load each component
        for component_path in components:
            script_path = base_path / component_path
            if script_path.exists():
                try:
                    content = script_path.read_text(encoding='utf-8')
                    combined_script.append(f"// === {component_path} ===")
                    combined_script.append(content)
                    combined_script.append("")  # Add blank line between components
                except Exception as e:
                    print(f"Warning: Could not read {component_path}: {e}")
                    combined_script.append(f"console.error('Failed to load {component_path}');")
            else:
                print(f"Warning: {component_path} not found at {script_path}")
                combined_script.append(f"console.error('{component_path} file not found');")

        # Add initialization script to wire up the components
        initialization_script = """
// === Component Initialization ===
document.addEventListener('DOMContentLoaded', function() {
    // Create container for the markdown content
    const container = document.getElementById('markdown-content') || document.body;

    // Initialize components
    const sectionManager = new SectionManager();
    const domRenderer = new DOMRenderer(sectionManager, container);
    const debugPanel = new DebugPanel();
    const documentControls = new DocumentControls();

    // Create document controls
    documentControls.create();

    // Wire up event handlers
    documentControls.setEventHandlers({
        'save-document': () => {
            console.log('Save document clicked');
            try {
                // Get current markdown content from section manager
                const currentMarkdown = sectionManager.getDocumentMarkdown();

                // Create filename with timestamp suffix following the established convention
                const now = new Date();
                const timestamp = now.toISOString().slice(0, 19).replace(/:/g, '-').replace('T', '-');

                // Extract original filename from config or use default
                const originalFilename = window.editorConfig?.originalFilename || 'document';
                const editedFilename = `${originalFilename}-edited-${timestamp}.md`;

                // Create and download the file
                const blob = new Blob([currentMarkdown], { type: 'text/markdown' });
                const url = URL.createObjectURL(blob);
                const a = document.createElement('a');
                a.href = url;
                a.download = editedFilename;
                document.body.appendChild(a);
                a.click();
                document.body.removeChild(a);
                URL.revokeObjectURL(url);

                // Log success to debug panel
                debugPanel.addMessage(`Document saved as: ${editedFilename}`, 'SUCCESS');
                console.log(`Document successfully saved as: ${editedFilename}`);

            } catch (error) {
                debugPanel.addMessage(`Save failed: ${error.message}`, 'ERROR');
                console.error('Save error:', error);
            }
        },
        'reset-all': () => {
            console.log('Reset all clicked');
            // Hide any open editors
            domRenderer.hideCurrentEditor();
            // Reset all sections to original state
            const allSections = Array.from(sectionManager.sections.values());
            allSections.forEach(section => {
                section.resetToOriginal();
            });
            // Re-render all sections
            domRenderer.renderAllSections(allSections);
            debugPanel.addMessage(`Reset all sections to original state`, 'INFO');
        },
        'show-status': () => {
            const status = sectionManager.getDocumentStatus();
            alert(`Document Status:\\nTotal Sections: ${status.totalSections}\\nEditing Sections: ${status.editingSections}`);
        },
        'toggle-debug': () => {
            debugPanel.toggle();
        }
    });

    // Set up debug panel integration
    sectionManager.on('sections-created', (data) => {
        debugPanel.addMessage(`Created ${data.count} sections`, 'INFO');
    });

    sectionManager.on('edit-started', (data) => {
        debugPanel.addMessage(`Edit started for section: ${data.sectionId}`, 'DEBUG');
    });

    sectionManager.on('changes-accepted', (data) => {
        debugPanel.addMessage(`Changes accepted for section: ${data.sectionId}`, 'SUCCESS');
        // Re-render the section to show updated content
        const section = sectionManager.sections.get(data.sectionId);
        if (section) {
            const sectionElement = domRenderer.findSectionElement(data.sectionId);
            if (sectionElement) {
                const newElement = domRenderer.renderSection(section);
                sectionElement.parentNode.replaceChild(newElement, sectionElement);
                debugPanel.addMessage(`DOM updated for section: ${data.sectionId}`, 'INFO');
            }
        }
    });

    sectionManager.on('changes-cancelled', (data) => {
        debugPanel.addMessage(`Changes cancelled for section: ${data.sectionId}`, 'WARNING');
    });

    // Initialize with markdown content
    const markdownToRender = markdownContent || '';
    if (markdownToRender.trim()) {
        const sections = sectionManager.createSectionsFromMarkdown(markdownToRender);
        domRenderer.renderAllSections(sections);
        debugPanel.addMessage(`Initialized with ${sections.length} sections`, 'INFO');
    } else {
        debugPanel.addMessage('No markdown content to initialize', 'WARNING');
    }

    // Make components globally available for debugging
    window.markitectComponents = {
        sectionManager,
        domRenderer,
        debugPanel,
        documentControls
    };

    console.log('Markitect modular editor initialized successfully');
});
"""

        combined_script.append(initialization_script)
        return '\n'.join(combined_script)