feat: initial commit from workspace-mcp

gdocs/managers/__init__.py

@@ -0,0 +1,18 @@
+"""
+Google Docs Operation Managers
+
+This package provides high-level manager classes for complex Google Docs operations,
+extracting business logic from the main tools module to improve maintainability.
+"""
+
+from .table_operation_manager import TableOperationManager
+from .header_footer_manager import HeaderFooterManager
+from .validation_manager import ValidationManager
+from .batch_operation_manager import BatchOperationManager
+
+__all__ = [
+    "TableOperationManager",
+    "HeaderFooterManager",
+    "ValidationManager",
+    "BatchOperationManager",
+]

gdocs/managers/batch_operation_manager.py

@@ -0,0 +1,534 @@
+"""
+Batch Operation Manager
+
+This module provides high-level batch operation management for Google Docs,
+extracting complex validation and request building logic.
+"""
+
+import logging
+import asyncio
+from typing import Any, Union, Dict, List, Tuple
+
+from gdocs.docs_helpers import (
+    create_insert_text_request,
+    create_delete_range_request,
+    create_format_text_request,
+    create_update_paragraph_style_request,
+    create_find_replace_request,
+    create_insert_table_request,
+    create_insert_page_break_request,
+    create_bullet_list_request,
+    create_delete_bullet_list_request,
+    create_insert_doc_tab_request,
+    create_delete_doc_tab_request,
+    create_update_doc_tab_request,
+    validate_operation,
+)
+
+logger = logging.getLogger(__name__)
+
+
+class BatchOperationManager:
+    """
+    High-level manager for Google Docs batch operations.
+
+    Handles complex multi-operation requests including:
+    - Operation validation and request building
+    - Batch execution with proper error handling
+    - Operation result processing and reporting
+    """
+
+    def __init__(self, service):
+        """
+        Initialize the batch operation manager.
+
+        Args:
+            service: Google Docs API service instance
+        """
+        self.service = service
+
+    async def execute_batch_operations(
+        self, document_id: str, operations: list[dict[str, Any]]
+    ) -> tuple[bool, str, dict[str, Any]]:
+        """
+        Execute multiple document operations in a single atomic batch.
+
+        This method extracts the complex logic from batch_update_doc tool function.
+
+        Args:
+            document_id: ID of the document to update
+            operations: List of operation dictionaries
+
+        Returns:
+            Tuple of (success, message, metadata)
+        """
+        logger.info(f"Executing batch operations on document {document_id}")
+        logger.info(f"Operations count: {len(operations)}")
+
+        if not operations:
+            return (
+                False,
+                "No operations provided. Please provide at least one operation.",
+                {},
+            )
+
+        try:
+            # Validate and build requests
+            requests, operation_descriptions = await self._validate_and_build_requests(
+                operations
+            )
+
+            if not requests:
+                return False, "No valid requests could be built from operations", {}
+
+            # Execute the batch
+            result = await self._execute_batch_requests(document_id, requests)
+
+            # Process results
+            metadata = {
+                "operations_count": len(operations),
+                "requests_count": len(requests),
+                "replies_count": len(result.get("replies", [])),
+                "operation_summary": operation_descriptions[:5],  # First 5 operations
+            }
+
+            # Extract new tab IDs from insert_doc_tab replies
+            created_tabs = self._extract_created_tabs(result)
+            if created_tabs:
+                metadata["created_tabs"] = created_tabs
+
+            summary = self._build_operation_summary(operation_descriptions)
+            msg = f"Successfully executed {len(operations)} operations ({summary})"
+            if created_tabs:
+                tab_info = ", ".join(
+                    f"'{t['title']}' (tab_id: {t['tab_id']})" for t in created_tabs
+                )
+                msg += f". Created tabs: {tab_info}"
+
+            return True, msg, metadata
+
+        except Exception as e:
+            logger.error(f"Failed to execute batch operations: {str(e)}")
+            return False, f"Batch operation failed: {str(e)}", {}
+
+    async def _validate_and_build_requests(
+        self, operations: list[dict[str, Any]]
+    ) -> tuple[list[dict[str, Any]], list[str]]:
+        """
+        Validate operations and build API requests.
+
+        Args:
+            operations: List of operation dictionaries
+
+        Returns:
+            Tuple of (requests, operation_descriptions)
+        """
+        requests = []
+        operation_descriptions = []
+
+        for i, op in enumerate(operations):
+            # Validate operation structure
+            is_valid, error_msg = validate_operation(op)
+            if not is_valid:
+                raise ValueError(f"Operation {i + 1}: {error_msg}")
+
+            op_type = op.get("type")
+
+            try:
+                # Build request based on operation type
+                result = self._build_operation_request(op, op_type)
+
+                # Handle both single request and list of requests
+                if isinstance(result[0], list):
+                    # Multiple requests (e.g., replace_text)
+                    for req in result[0]:
+                        requests.append(req)
+                    operation_descriptions.append(result[1])
+                elif result[0]:
+                    # Single request
+                    requests.append(result[0])
+                    operation_descriptions.append(result[1])
+
+            except KeyError as e:
+                raise ValueError(
+                    f"Operation {i + 1} ({op_type}) missing required field: {e}"
+                )
+            except Exception as e:
+                raise ValueError(
+                    f"Operation {i + 1} ({op_type}) failed validation: {str(e)}"
+                )
+
+        return requests, operation_descriptions
+
+    def _build_operation_request(
+        self, op: dict[str, Any], op_type: str
+    ) -> Tuple[Union[Dict[str, Any], List[Dict[str, Any]]], str]:
+        """
+        Build a single operation request.
+
+        Args:
+            op: Operation dictionary
+            op_type: Operation type
+
+        Returns:
+            Tuple of (request, description)
+        """
+        tab_id = op.get("tab_id")
+
+        if op_type == "insert_text":
+            request = create_insert_text_request(op["index"], op["text"], tab_id)
+            description = f"insert text at {op['index']}"
+
+        elif op_type == "delete_text":
+            request = create_delete_range_request(
+                op["start_index"], op["end_index"], tab_id
+            )
+            description = f"delete text {op['start_index']}-{op['end_index']}"
+
+        elif op_type == "replace_text":
+            # Replace is delete + insert (must be done in this order)
+            delete_request = create_delete_range_request(
+                op["start_index"], op["end_index"], tab_id
+            )
+            insert_request = create_insert_text_request(
+                op["start_index"], op["text"], tab_id
+            )
+            # Return both requests as a list
+            request = [delete_request, insert_request]
+            description = f"replace text {op['start_index']}-{op['end_index']} with '{op['text'][:20]}{'...' if len(op['text']) > 20 else ''}'"
+
+        elif op_type == "format_text":
+            request = create_format_text_request(
+                op["start_index"],
+                op["end_index"],
+                op.get("bold"),
+                op.get("italic"),
+                op.get("underline"),
+                op.get("font_size"),
+                op.get("font_family"),
+                op.get("text_color"),
+                op.get("background_color"),
+                op.get("link_url"),
+                tab_id,
+            )
+
+            if not request:
+                raise ValueError("No formatting options provided")
+
+            # Build format description
+            format_changes = []
+            for param, name in [
+                ("bold", "bold"),
+                ("italic", "italic"),
+                ("underline", "underline"),
+                ("font_size", "font size"),
+                ("font_family", "font family"),
+                ("text_color", "text color"),
+                ("background_color", "background color"),
+                ("link_url", "link"),
+            ]:
+                if op.get(param) is not None:
+                    value = f"{op[param]}pt" if param == "font_size" else op[param]
+                    format_changes.append(f"{name}: {value}")
+
+            description = f"format text {op['start_index']}-{op['end_index']} ({', '.join(format_changes)})"
+
+        elif op_type == "update_paragraph_style":
+            request = create_update_paragraph_style_request(
+                op["start_index"],
+                op["end_index"],
+                op.get("heading_level"),
+                op.get("alignment"),
+                op.get("line_spacing"),
+                op.get("indent_first_line"),
+                op.get("indent_start"),
+                op.get("indent_end"),
+                op.get("space_above"),
+                op.get("space_below"),
+                tab_id,
+                op.get("named_style_type"),
+            )
+
+            if not request:
+                raise ValueError("No paragraph style options provided")
+
+            _PT_PARAMS = {
+                "indent_first_line",
+                "indent_start",
+                "indent_end",
+                "space_above",
+                "space_below",
+            }
+            _SUFFIX = {
+                "heading_level": lambda v: f"H{v}",
+                "line_spacing": lambda v: f"{v}x",
+            }
+
+            style_changes = []
+            for param, name in [
+                ("heading_level", "heading"),
+                ("alignment", "alignment"),
+                ("line_spacing", "line spacing"),
+                ("indent_first_line", "first line indent"),
+                ("indent_start", "start indent"),
+                ("indent_end", "end indent"),
+                ("space_above", "space above"),
+                ("space_below", "space below"),
+            ]:
+                if op.get(param) is not None:
+                    raw = op[param]
+                    fmt = _SUFFIX.get(param)
+                    if fmt:
+                        value = fmt(raw)
+                    elif param in _PT_PARAMS:
+                        value = f"{raw}pt"
+                    else:
+                        value = raw
+                    style_changes.append(f"{name}: {value}")
+
+            description = f"paragraph style {op['start_index']}-{op['end_index']} ({', '.join(style_changes)})"
+
+        elif op_type == "insert_table":
+            request = create_insert_table_request(
+                op["index"], op["rows"], op["columns"], tab_id
+            )
+            description = f"insert {op['rows']}x{op['columns']} table at {op['index']}"
+
+        elif op_type == "insert_page_break":
+            request = create_insert_page_break_request(op["index"], tab_id)
+            description = f"insert page break at {op['index']}"
+
+        elif op_type == "find_replace":
+            request = create_find_replace_request(
+                op["find_text"], op["replace_text"], op.get("match_case", False), tab_id
+            )
+            description = f"find/replace '{op['find_text']}' → '{op['replace_text']}'"
+
+        elif op_type == "create_bullet_list":
+            list_type = op.get("list_type", "UNORDERED")
+            if list_type not in ("UNORDERED", "ORDERED", "NONE"):
+                raise ValueError(
+                    f"Invalid list_type '{list_type}'. Must be 'UNORDERED', 'ORDERED', or 'NONE'"
+                )
+            if list_type == "NONE":
+                request = create_delete_bullet_list_request(
+                    op["start_index"], op["end_index"], tab_id
+                )
+                description = f"remove bullets {op['start_index']}-{op['end_index']}"
+            else:
+                request = create_bullet_list_request(
+                    op["start_index"],
+                    op["end_index"],
+                    list_type,
+                    op.get("nesting_level"),
+                    op.get("paragraph_start_indices"),
+                    tab_id,
+                )
+                style = "bulleted" if list_type == "UNORDERED" else "numbered"
+                description = (
+                    f"create {style} list {op['start_index']}-{op['end_index']}"
+                )
+                if op.get("nesting_level"):
+                    description += f" (nesting level {op['nesting_level']})"
+
+        elif op_type == "insert_doc_tab":
+            request = create_insert_doc_tab_request(
+                op["title"], op["index"], op.get("parent_tab_id")
+            )
+            description = f"insert tab '{op['title']}' at {op['index']}"
+            if op.get("parent_tab_id"):
+                description += f" under parent tab {op['parent_tab_id']}"
+
+        elif op_type == "delete_doc_tab":
+            request = create_delete_doc_tab_request(op["tab_id"])
+            description = f"delete tab '{op['tab_id']}'"
+
+        elif op_type == "update_doc_tab":
+            request = create_update_doc_tab_request(op["tab_id"], op["title"])
+            description = f"rename tab '{op['tab_id']}' to '{op['title']}'"
+
+        else:
+            supported_types = [
+                "insert_text",
+                "delete_text",
+                "replace_text",
+                "format_text",
+                "update_paragraph_style",
+                "insert_table",
+                "insert_page_break",
+                "find_replace",
+                "create_bullet_list",
+                "insert_doc_tab",
+                "delete_doc_tab",
+                "update_doc_tab",
+            ]
+            raise ValueError(
+                f"Unsupported operation type '{op_type}'. Supported: {', '.join(supported_types)}"
+            )
+
+        return request, description
+
+    async def _execute_batch_requests(
+        self, document_id: str, requests: list[dict[str, Any]]
+    ) -> dict[str, Any]:
+        """
+        Execute the batch requests against the Google Docs API.
+
+        Args:
+            document_id: Document ID
+            requests: List of API requests
+
+        Returns:
+            API response
+        """
+        return await asyncio.to_thread(
+            self.service.documents()
+            .batchUpdate(documentId=document_id, body={"requests": requests})
+            .execute
+        )
+
+    def _extract_created_tabs(self, result: dict[str, Any]) -> list[dict[str, str]]:
+        """
+        Extract tab IDs from insert_doc_tab replies in the batchUpdate response.
+
+        Args:
+            result: The batchUpdate API response
+
+        Returns:
+            List of dicts with tab_id and title for each created tab
+        """
+        created_tabs = []
+        for reply in result.get("replies", []):
+            if "createDocumentTab" in reply:
+                props = reply["createDocumentTab"].get("tabProperties", {})
+                tab_id = props.get("tabId")
+                title = props.get("title", "")
+                if tab_id:
+                    created_tabs.append({"tab_id": tab_id, "title": title})
+        return created_tabs
+
+    def _build_operation_summary(self, operation_descriptions: list[str]) -> str:
+        """
+        Build a concise summary of operations performed.
+
+        Args:
+            operation_descriptions: List of operation descriptions
+
+        Returns:
+            Summary string
+        """
+        if not operation_descriptions:
+            return "no operations"
+
+        summary_items = operation_descriptions[:3]  # Show first 3 operations
+        summary = ", ".join(summary_items)
+
+        if len(operation_descriptions) > 3:
+            remaining = len(operation_descriptions) - 3
+            summary += f" and {remaining} more operation{'s' if remaining > 1 else ''}"
+
+        return summary
+
+    def get_supported_operations(self) -> dict[str, Any]:
+        """
+        Get information about supported batch operations.
+
+        Returns:
+            Dictionary with supported operation types and their required parameters
+        """
+        return {
+            "supported_operations": {
+                "insert_text": {
+                    "required": ["index", "text"],
+                    "description": "Insert text at specified index",
+                },
+                "delete_text": {
+                    "required": ["start_index", "end_index"],
+                    "description": "Delete text in specified range",
+                },
+                "replace_text": {
+                    "required": ["start_index", "end_index", "text"],
+                    "description": "Replace text in range with new text",
+                },
+                "format_text": {
+                    "required": ["start_index", "end_index"],
+                    "optional": [
+                        "bold",
+                        "italic",
+                        "underline",
+                        "font_size",
+                        "font_family",
+                        "text_color",
+                        "background_color",
+                        "link_url",
+                    ],
+                    "description": "Apply formatting to text range",
+                },
+                "update_paragraph_style": {
+                    "required": ["start_index", "end_index"],
+                    "optional": [
+                        "heading_level",
+                        "alignment",
+                        "line_spacing",
+                        "indent_first_line",
+                        "indent_start",
+                        "indent_end",
+                        "space_above",
+                        "space_below",
+                        "named_style_type",
+                    ],
+                    "description": "Apply paragraph-level styling (headings, alignment, spacing, indentation)",
+                },
+                "insert_table": {
+                    "required": ["index", "rows", "columns"],
+                    "description": "Insert table at specified index",
+                },
+                "insert_page_break": {
+                    "required": ["index"],
+                    "description": "Insert page break at specified index",
+                },
+                "find_replace": {
+                    "required": ["find_text", "replace_text"],
+                    "optional": ["match_case"],
+                    "description": "Find and replace text throughout document",
+                },
+                "create_bullet_list": {
+                    "required": ["start_index", "end_index"],
+                    "optional": [
+                        "list_type",
+                        "nesting_level",
+                        "paragraph_start_indices",
+                    ],
+                    "description": "Apply or remove native bullet/numbered list formatting (list_type: UNORDERED, ORDERED, or NONE to remove; nesting_level: 0-8)",
+                },
+                "insert_doc_tab": {
+                    "required": ["title", "index"],
+                    "description": "Insert a new document tab with given title at specified index",
+                },
+                "delete_doc_tab": {
+                    "required": ["tab_id"],
+                    "description": "Delete a document tab by its ID",
+                },
+                "update_doc_tab": {
+                    "required": ["tab_id", "title"],
+                    "description": "Rename a document tab",
+                },
+            },
+            "example_operations": [
+                {"type": "insert_text", "index": 1, "text": "Hello World"},
+                {
+                    "type": "format_text",
+                    "start_index": 1,
+                    "end_index": 12,
+                    "bold": True,
+                },
+                {"type": "insert_table", "index": 20, "rows": 2, "columns": 3},
+                {
+                    "type": "update_paragraph_style",
+                    "start_index": 1,
+                    "end_index": 20,
+                    "heading_level": 1,
+                    "alignment": "CENTER",
+                },
+            ],
+        }

gdocs/managers/header_footer_manager.py

@@ -0,0 +1,339 @@
+"""
+Header Footer Manager
+
+This module provides high-level operations for managing headers and footers
+in Google Docs, extracting complex logic from the main tools module.
+"""
+
+import logging
+import asyncio
+from typing import Any, Optional
+
+logger = logging.getLogger(__name__)
+
+
+class HeaderFooterManager:
+    """
+    High-level manager for Google Docs header and footer operations.
+
+    Handles complex header/footer operations including:
+    - Finding and updating existing headers/footers
+    - Content replacement with proper range calculation
+    - Section type management
+    """
+
+    def __init__(self, service):
+        """
+        Initialize the header footer manager.
+
+        Args:
+            service: Google Docs API service instance
+        """
+        self.service = service
+
+    async def update_header_footer_content(
+        self,
+        document_id: str,
+        section_type: str,
+        content: str,
+        header_footer_type: str = "DEFAULT",
+    ) -> tuple[bool, str]:
+        """
+        Updates header or footer content in a document.
+
+        This method extracts the complex logic from update_doc_headers_footers tool function.
+
+        Args:
+            document_id: ID of the document to update
+            section_type: Type of section ("header" or "footer")
+            content: New content for the section
+            header_footer_type: Type of header/footer ("DEFAULT", "FIRST_PAGE_ONLY", "EVEN_PAGE")
+
+        Returns:
+            Tuple of (success, message)
+        """
+        logger.info(f"Updating {section_type} in document {document_id}")
+
+        # Validate section type
+        if section_type not in ["header", "footer"]:
+            return False, "section_type must be 'header' or 'footer'"
+
+        # Validate header/footer type
+        if header_footer_type not in ["DEFAULT", "FIRST_PAGE_ONLY", "EVEN_PAGE"]:
+            return (
+                False,
+                "header_footer_type must be 'DEFAULT', 'FIRST_PAGE_ONLY', or 'EVEN_PAGE'",
+            )
+
+        try:
+            # Get document structure
+            doc = await self._get_document(document_id)
+
+            # Find the target section
+            target_section, section_id = await self._find_target_section(
+                doc, section_type, header_footer_type
+            )
+
+            if not target_section:
+                return (
+                    False,
+                    f"No {section_type} found in document. Please create a {section_type} first in Google Docs.",
+                )
+
+            # Update the content
+            success = await self._replace_section_content(
+                document_id, target_section, content
+            )
+
+            if success:
+                return True, f"Updated {section_type} content in document {document_id}"
+            else:
+                return (
+                    False,
+                    f"Could not find content structure in {section_type} to update",
+                )
+
+        except Exception as e:
+            logger.error(f"Failed to update {section_type}: {str(e)}")
+            return False, f"Failed to update {section_type}: {str(e)}"
+
+    async def _get_document(self, document_id: str) -> dict[str, Any]:
+        """Get the full document data."""
+        return await asyncio.to_thread(
+            self.service.documents().get(documentId=document_id).execute
+        )
+
+    async def _find_target_section(
+        self, doc: dict[str, Any], section_type: str, header_footer_type: str
+    ) -> tuple[Optional[dict[str, Any]], Optional[str]]:
+        """
+        Find the target header or footer section.
+
+        Args:
+            doc: Document data
+            section_type: "header" or "footer"
+            header_footer_type: Type of header/footer
+
+        Returns:
+            Tuple of (section_data, section_id) or (None, None) if not found
+        """
+        if section_type == "header":
+            sections = doc.get("headers", {})
+        else:
+            sections = doc.get("footers", {})
+
+        # Try to match section based on header_footer_type
+        # Google Docs API typically uses section IDs that correspond to types
+
+        # First, try to find an exact match based on common patterns
+        for section_id, section_data in sections.items():
+            # Check if section_data contains type information
+            if "type" in section_data and section_data["type"] == header_footer_type:
+                return section_data, section_id
+
+        # If no exact match, try pattern matching on section ID
+        # Google Docs often uses predictable section ID patterns
+        target_patterns = {
+            "DEFAULT": ["default", "kix"],  # DEFAULT headers often have these patterns
+            "FIRST_PAGE": ["first", "firstpage"],
+            "EVEN_PAGE": ["even", "evenpage"],
+            "FIRST_PAGE_ONLY": ["first", "firstpage"],  # Legacy support
+        }
+
+        patterns = target_patterns.get(header_footer_type, [])
+        for pattern in patterns:
+            for section_id, section_data in sections.items():
+                if pattern.lower() in section_id.lower():
+                    return section_data, section_id
+
+        # If still no match, return the first available section as fallback
+        # This maintains backward compatibility
+        for section_id, section_data in sections.items():
+            return section_data, section_id
+
+        return None, None
+
+    async def _replace_section_content(
+        self, document_id: str, section: dict[str, Any], new_content: str
+    ) -> bool:
+        """
+        Replace the content in a header or footer section.
+
+        Args:
+            document_id: Document ID
+            section: Section data containing content elements
+            new_content: New content to insert
+
+        Returns:
+            True if successful, False otherwise
+        """
+        content_elements = section.get("content", [])
+        if not content_elements:
+            return False
+
+        # Find the first paragraph to replace content
+        first_para = self._find_first_paragraph(content_elements)
+        if not first_para:
+            return False
+
+        # Calculate content range
+        start_index = first_para.get("startIndex", 0)
+        end_index = first_para.get("endIndex", 0)
+
+        # Build requests to replace content
+        requests = []
+
+        # Delete existing content if any (preserve paragraph structure)
+        if end_index > start_index:
+            requests.append(
+                {
+                    "deleteContentRange": {
+                        "range": {
+                            "startIndex": start_index,
+                            "endIndex": end_index - 1,  # Keep the paragraph end marker
+                        }
+                    }
+                }
+            )
+
+        # Insert new content
+        requests.append(
+            {"insertText": {"location": {"index": start_index}, "text": new_content}}
+        )
+
+        try:
+            await asyncio.to_thread(
+                self.service.documents()
+                .batchUpdate(documentId=document_id, body={"requests": requests})
+                .execute
+            )
+            return True
+
+        except Exception as e:
+            logger.error(f"Failed to replace section content: {str(e)}")
+            return False
+
+    def _find_first_paragraph(
+        self, content_elements: list[dict[str, Any]]
+    ) -> Optional[dict[str, Any]]:
+        """Find the first paragraph element in content."""
+        for element in content_elements:
+            if "paragraph" in element:
+                return element
+        return None
+
+    async def get_header_footer_info(self, document_id: str) -> dict[str, Any]:
+        """
+        Get information about all headers and footers in the document.
+
+        Args:
+            document_id: Document ID
+
+        Returns:
+            Dictionary with header and footer information
+        """
+        try:
+            doc = await self._get_document(document_id)
+
+            headers_info = {}
+            for header_id, header_data in doc.get("headers", {}).items():
+                headers_info[header_id] = self._extract_section_info(header_data)
+
+            footers_info = {}
+            for footer_id, footer_data in doc.get("footers", {}).items():
+                footers_info[footer_id] = self._extract_section_info(footer_data)
+
+            return {
+                "headers": headers_info,
+                "footers": footers_info,
+                "has_headers": bool(headers_info),
+                "has_footers": bool(footers_info),
+            }
+
+        except Exception as e:
+            logger.error(f"Failed to get header/footer info: {str(e)}")
+            return {"error": str(e)}
+
+    def _extract_section_info(self, section_data: dict[str, Any]) -> dict[str, Any]:
+        """Extract useful information from a header/footer section."""
+        content_elements = section_data.get("content", [])
+
+        # Extract text content
+        text_content = ""
+        for element in content_elements:
+            if "paragraph" in element:
+                para = element["paragraph"]
+                for para_element in para.get("elements", []):
+                    if "textRun" in para_element:
+                        text_content += para_element["textRun"].get("content", "")
+
+        return {
+            "content_preview": text_content[:100] if text_content else "(empty)",
+            "element_count": len(content_elements),
+            "start_index": content_elements[0].get("startIndex", 0)
+            if content_elements
+            else 0,
+            "end_index": content_elements[-1].get("endIndex", 0)
+            if content_elements
+            else 0,
+        }
+
+    async def create_header_footer(
+        self, document_id: str, section_type: str, header_footer_type: str = "DEFAULT"
+    ) -> tuple[bool, str]:
+        """
+        Create a new header or footer section.
+
+        Args:
+            document_id: Document ID
+            section_type: "header" or "footer"
+            header_footer_type: Type of header/footer ("DEFAULT", "FIRST_PAGE", or "EVEN_PAGE")
+
+        Returns:
+            Tuple of (success, message)
+        """
+        if section_type not in ["header", "footer"]:
+            return False, "section_type must be 'header' or 'footer'"
+
+        # Map our type names to API type names
+        type_mapping = {
+            "DEFAULT": "DEFAULT",
+            "FIRST_PAGE": "FIRST_PAGE",
+            "EVEN_PAGE": "EVEN_PAGE",
+            "FIRST_PAGE_ONLY": "FIRST_PAGE",  # Support legacy name
+        }
+
+        api_type = type_mapping.get(header_footer_type, header_footer_type)
+        if api_type not in ["DEFAULT", "FIRST_PAGE", "EVEN_PAGE"]:
+            return (
+                False,
+                "header_footer_type must be 'DEFAULT', 'FIRST_PAGE', or 'EVEN_PAGE'",
+            )
+
+        try:
+            # Build the request
+            request = {"type": api_type}
+
+            # Create the appropriate request type
+            if section_type == "header":
+                batch_request = {"createHeader": request}
+            else:
+                batch_request = {"createFooter": request}
+
+            # Execute the request
+            await asyncio.to_thread(
+                self.service.documents()
+                .batchUpdate(documentId=document_id, body={"requests": [batch_request]})
+                .execute
+            )
+
+            return True, f"Successfully created {section_type} with type {api_type}"
+
+        except Exception as e:
+            error_msg = str(e)
+            if "already exists" in error_msg.lower():
+                return (
+                    False,
+                    f"A {section_type} of type {api_type} already exists in the document",
+                )
+            return False, f"Failed to create {section_type}: {error_msg}"

gdocs/managers/table_operation_manager.py

@@ -0,0 +1,405 @@
+"""
+Table Operation Manager
+
+This module provides high-level table operations that orchestrate
+multiple Google Docs API calls for complex table manipulations.
+"""
+
+import logging
+import asyncio
+from typing import List, Dict, Any, Tuple
+
+from gdocs.docs_helpers import create_insert_table_request
+from gdocs.docs_structure import find_tables
+from gdocs.docs_tables import validate_table_data
+
+logger = logging.getLogger(__name__)
+
+
+class TableOperationManager:
+    """
+    High-level manager for Google Docs table operations.
+
+    Handles complex multi-step table operations including:
+    - Creating tables with data population
+    - Populating existing tables
+    - Managing cell-by-cell operations with proper index refreshing
+    """
+
+    def __init__(self, service):
+        """
+        Initialize the table operation manager.
+
+        Args:
+            service: Google Docs API service instance
+        """
+        self.service = service
+
+    async def create_and_populate_table(
+        self,
+        document_id: str,
+        table_data: List[List[str]],
+        index: int,
+        bold_headers: bool = True,
+        tab_id: str = None,
+    ) -> Tuple[bool, str, Dict[str, Any]]:
+        """
+        Creates a table and populates it with data in a reliable multi-step process.
+
+        This method extracts the complex logic from create_table_with_data tool function.
+
+        Args:
+            document_id: ID of the document to update
+            table_data: 2D list of strings for table content
+            index: Position to insert the table
+            bold_headers: Whether to make the first row bold
+            tab_id: Optional tab ID for targeting a specific tab
+
+        Returns:
+            Tuple of (success, message, metadata)
+        """
+        logger.debug(
+            f"Creating table at index {index}, dimensions: {len(table_data)}x{len(table_data[0]) if table_data and len(table_data) > 0 else 0}"
+        )
+
+        # Validate input data
+        is_valid, error_msg = validate_table_data(table_data)
+        if not is_valid:
+            return False, f"Invalid table data: {error_msg}", {}
+
+        rows = len(table_data)
+        cols = len(table_data[0])
+
+        try:
+            # Step 1: Create empty table
+            await self._create_empty_table(document_id, index, rows, cols, tab_id)
+
+            # Step 2: Get fresh document structure to find actual cell positions
+            fresh_tables = await self._get_document_tables(document_id, tab_id)
+            if not fresh_tables:
+                return False, "Could not find table after creation", {}
+
+            # Step 3: Populate each cell with proper index refreshing
+            population_count = await self._populate_table_cells(
+                document_id, table_data, bold_headers, tab_id
+            )
+
+            metadata = {
+                "rows": rows,
+                "columns": cols,
+                "populated_cells": population_count,
+                "table_index": len(fresh_tables) - 1,
+            }
+
+            return (
+                True,
+                f"Successfully created {rows}x{cols} table and populated {population_count} cells",
+                metadata,
+            )
+
+        except Exception as e:
+            logger.error(f"Failed to create and populate table: {str(e)}")
+            return False, f"Table creation failed: {str(e)}", {}
+
+    async def _create_empty_table(
+        self, document_id: str, index: int, rows: int, cols: int, tab_id: str = None
+    ) -> None:
+        """Create an empty table at the specified index."""
+        logger.debug(f"Creating {rows}x{cols} table at index {index}")
+
+        await asyncio.to_thread(
+            self.service.documents()
+            .batchUpdate(
+                documentId=document_id,
+                body={
+                    "requests": [create_insert_table_request(index, rows, cols, tab_id)]
+                },
+            )
+            .execute
+        )
+
+    async def _get_document_tables(
+        self, document_id: str, tab_id: str = None
+    ) -> List[Dict[str, Any]]:
+        """Get fresh document structure and extract table information."""
+        doc = await asyncio.to_thread(
+            self.service.documents()
+            .get(documentId=document_id, includeTabsContent=True)
+            .execute
+        )
+
+        if tab_id:
+            tab = self._find_tab(doc.get("tabs", []), tab_id)
+            if tab and "documentTab" in tab:
+                doc = doc.copy()
+                doc["body"] = tab["documentTab"].get("body", {})
+
+        return find_tables(doc)
+
+    @staticmethod
+    def _find_tab(tabs: list, target_id: str):
+        """Recursively find a tab by ID."""
+        for tab in tabs:
+            if tab.get("tabProperties", {}).get("tabId") == target_id:
+                return tab
+            if "childTabs" in tab:
+                found = TableOperationManager._find_tab(tab["childTabs"], target_id)
+                if found:
+                    return found
+        return None
+
+    async def _populate_table_cells(
+        self,
+        document_id: str,
+        table_data: List[List[str]],
+        bold_headers: bool,
+        tab_id: str = None,
+    ) -> int:
+        """
+        Populate table cells with data, refreshing structure after each insertion.
+
+        This prevents index shifting issues by getting fresh cell positions
+        before each insertion.
+        """
+        population_count = 0
+
+        for row_idx, row_data in enumerate(table_data):
+            logger.debug(f"Processing row {row_idx}: {len(row_data)} cells")
+
+            for col_idx, cell_text in enumerate(row_data):
+                if not cell_text:  # Skip empty cells
+                    continue
+
+                try:
+                    # CRITICAL: Refresh document structure before each insertion
+                    success = await self._populate_single_cell(
+                        document_id,
+                        row_idx,
+                        col_idx,
+                        cell_text,
+                        bold_headers and row_idx == 0,
+                        tab_id,
+                    )
+
+                    if success:
+                        population_count += 1
+                        logger.debug(f"Populated cell ({row_idx},{col_idx})")
+                    else:
+                        logger.warning(f"Failed to populate cell ({row_idx},{col_idx})")
+
+                except Exception as e:
+                    logger.error(
+                        f"Error populating cell ({row_idx},{col_idx}): {str(e)}"
+                    )
+
+        return population_count
+
+    async def _populate_single_cell(
+        self,
+        document_id: str,
+        row_idx: int,
+        col_idx: int,
+        cell_text: str,
+        apply_bold: bool = False,
+        tab_id: str = None,
+    ) -> bool:
+        """
+        Populate a single cell with text, with optional bold formatting.
+
+        Returns True if successful, False otherwise.
+        """
+        try:
+            # Get fresh table structure to avoid index shifting issues
+            tables = await self._get_document_tables(document_id, tab_id)
+            if not tables:
+                return False
+
+            table = tables[-1]  # Use the last table (newly created one)
+            cells = table.get("cells", [])
+
+            # Bounds checking
+            if row_idx >= len(cells) or col_idx >= len(cells[row_idx]):
+                logger.error(f"Cell ({row_idx},{col_idx}) out of bounds")
+                return False
+
+            cell = cells[row_idx][col_idx]
+            insertion_index = cell.get("insertion_index")
+
+            if not insertion_index:
+                logger.warning(f"No insertion_index for cell ({row_idx},{col_idx})")
+                return False
+
+            # Insert text
+            await asyncio.to_thread(
+                self.service.documents()
+                .batchUpdate(
+                    documentId=document_id,
+                    body={
+                        "requests": [
+                            {
+                                "insertText": {
+                                    "location": {"index": insertion_index},
+                                    "text": cell_text,
+                                }
+                            }
+                        ]
+                    },
+                )
+                .execute
+            )
+
+            # Apply bold formatting if requested
+            if apply_bold:
+                await self._apply_bold_formatting(
+                    document_id, insertion_index, insertion_index + len(cell_text)
+                )
+
+            return True
+
+        except Exception as e:
+            logger.error(f"Failed to populate single cell: {str(e)}")
+            return False
+
+    async def _apply_bold_formatting(
+        self, document_id: str, start_index: int, end_index: int
+    ) -> None:
+        """Apply bold formatting to a text range."""
+        await asyncio.to_thread(
+            self.service.documents()
+            .batchUpdate(
+                documentId=document_id,
+                body={
+                    "requests": [
+                        {
+                            "updateTextStyle": {
+                                "range": {
+                                    "startIndex": start_index,
+                                    "endIndex": end_index,
+                                },
+                                "textStyle": {"bold": True},
+                                "fields": "bold",
+                            }
+                        }
+                    ]
+                },
+            )
+            .execute
+        )
+
+    async def populate_existing_table(
+        self,
+        document_id: str,
+        table_index: int,
+        table_data: List[List[str]],
+        clear_existing: bool = False,
+    ) -> Tuple[bool, str, Dict[str, Any]]:
+        """
+        Populate an existing table with data.
+
+        Args:
+            document_id: ID of the document
+            table_index: Index of the table to populate (0-based)
+            table_data: 2D list of data to insert
+            clear_existing: Whether to clear existing content first
+
+        Returns:
+            Tuple of (success, message, metadata)
+        """
+        try:
+            tables = await self._get_document_tables(document_id)
+            if table_index >= len(tables):
+                return (
+                    False,
+                    f"Table index {table_index} not found. Document has {len(tables)} tables",
+                    {},
+                )
+
+            table_info = tables[table_index]
+
+            # Validate dimensions
+            table_rows = table_info["rows"]
+            table_cols = table_info["columns"]
+            data_rows = len(table_data)
+            data_cols = len(table_data[0]) if table_data else 0
+
+            if data_rows > table_rows or data_cols > table_cols:
+                return (
+                    False,
+                    f"Data ({data_rows}x{data_cols}) exceeds table dimensions ({table_rows}x{table_cols})",
+                    {},
+                )
+
+            # Populate cells
+            population_count = await self._populate_existing_table_cells(
+                document_id, table_index, table_data
+            )
+
+            metadata = {
+                "table_index": table_index,
+                "populated_cells": population_count,
+                "table_dimensions": f"{table_rows}x{table_cols}",
+                "data_dimensions": f"{data_rows}x{data_cols}",
+            }
+
+            return (
+                True,
+                f"Successfully populated {population_count} cells in existing table",
+                metadata,
+            )
+
+        except Exception as e:
+            return False, f"Failed to populate existing table: {str(e)}", {}
+
+    async def _populate_existing_table_cells(
+        self, document_id: str, table_index: int, table_data: List[List[str]]
+    ) -> int:
+        """Populate cells in an existing table."""
+        population_count = 0
+
+        for row_idx, row_data in enumerate(table_data):
+            for col_idx, cell_text in enumerate(row_data):
+                if not cell_text:
+                    continue
+
+                # Get fresh table structure for each cell
+                tables = await self._get_document_tables(document_id)
+                if table_index >= len(tables):
+                    break
+
+                table = tables[table_index]
+                cells = table.get("cells", [])
+
+                if row_idx >= len(cells) or col_idx >= len(cells[row_idx]):
+                    continue
+
+                cell = cells[row_idx][col_idx]
+
+                # For existing tables, append to existing content
+                cell_end = cell["end_index"] - 1  # Don't include cell end marker
+
+                try:
+                    await asyncio.to_thread(
+                        self.service.documents()
+                        .batchUpdate(
+                            documentId=document_id,
+                            body={
+                                "requests": [
+                                    {
+                                        "insertText": {
+                                            "location": {"index": cell_end},
+                                            "text": cell_text,
+                                        }
+                                    }
+                                ]
+                            },
+                        )
+                        .execute
+                    )
+                    population_count += 1
+
+                except Exception as e:
+                    logger.error(
+                        f"Failed to populate existing cell ({row_idx},{col_idx}): {str(e)}"
+                    )
+
+        return population_count

gdocs/managers/validation_manager.py

@@ -0,0 +1,727 @@
+"""
+Validation Manager
+
+This module provides centralized validation logic for Google Docs operations,
+extracting validation patterns from individual tool functions.
+"""
+
+import logging
+from typing import Dict, Any, List, Tuple, Optional
+from urllib.parse import urlparse
+
+from gdocs.docs_helpers import validate_operation
+
+logger = logging.getLogger(__name__)
+
+
+class ValidationManager:
+    """
+    Centralized validation manager for Google Docs operations.
+
+    Provides consistent validation patterns and error messages across
+    all document operations, reducing code duplication and improving
+    error message quality.
+    """
+
+    def __init__(self):
+        """Initialize the validation manager."""
+        self.validation_rules = self._setup_validation_rules()
+
+    def _setup_validation_rules(self) -> Dict[str, Any]:
+        """Setup validation rules and constraints."""
+        return {
+            "table_max_rows": 1000,
+            "table_max_columns": 20,
+            "document_id_pattern": r"^[a-zA-Z0-9-_]+$",
+            "max_text_length": 1000000,  # 1MB text limit
+            "font_size_range": (1, 400),  # Google Docs font size limits
+            "valid_header_footer_types": ["DEFAULT", "FIRST_PAGE_ONLY", "EVEN_PAGE"],
+            "valid_section_types": ["header", "footer"],
+            "valid_list_types": ["UNORDERED", "ORDERED"],
+            "valid_element_types": ["table", "list", "page_break"],
+            "valid_alignments": ["START", "CENTER", "END", "JUSTIFIED"],
+            "heading_level_range": (0, 6),
+        }
+
+    def validate_document_id(self, document_id: str) -> Tuple[bool, str]:
+        """
+        Validate Google Docs document ID format.
+
+        Args:
+            document_id: Document ID to validate
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        if not document_id:
+            return False, "Document ID cannot be empty"
+
+        if not isinstance(document_id, str):
+            return (
+                False,
+                f"Document ID must be a string, got {type(document_id).__name__}",
+            )
+
+        # Basic length check (Google Docs IDs are typically 40+ characters)
+        if len(document_id) < 20:
+            return False, "Document ID appears too short to be valid"
+
+        return True, ""
+
+    def validate_table_data(self, table_data: List[List[str]]) -> Tuple[bool, str]:
+        """
+        Comprehensive validation for table data format.
+
+        This extracts and centralizes table validation logic from multiple functions.
+
+        Args:
+            table_data: 2D array of data to validate
+
+        Returns:
+            Tuple of (is_valid, detailed_error_message)
+        """
+        if not table_data:
+            return (
+                False,
+                "Table data cannot be empty. Required format: [['col1', 'col2'], ['row1col1', 'row1col2']]",
+            )
+
+        if not isinstance(table_data, list):
+            return (
+                False,
+                f"Table data must be a list, got {type(table_data).__name__}. Required format: [['col1', 'col2'], ['row1col1', 'row1col2']]",
+            )
+
+        # Check if it's a 2D list
+        if not all(isinstance(row, list) for row in table_data):
+            non_list_rows = [
+                i for i, row in enumerate(table_data) if not isinstance(row, list)
+            ]
+            return (
+                False,
+                f"All rows must be lists. Rows {non_list_rows} are not lists. Required format: [['col1', 'col2'], ['row1col1', 'row1col2']]",
+            )
+
+        # Check for empty rows
+        if any(len(row) == 0 for row in table_data):
+            empty_rows = [i for i, row in enumerate(table_data) if len(row) == 0]
+            return (
+                False,
+                f"Rows cannot be empty. Empty rows found at indices: {empty_rows}",
+            )
+
+        # Check column consistency
+        col_counts = [len(row) for row in table_data]
+        if len(set(col_counts)) > 1:
+            return (
+                False,
+                f"All rows must have the same number of columns. Found column counts: {col_counts}. Fix your data structure.",
+            )
+
+        rows = len(table_data)
+        cols = col_counts[0]
+
+        # Check dimension limits
+        if rows > self.validation_rules["table_max_rows"]:
+            return (
+                False,
+                f"Too many rows ({rows}). Maximum allowed: {self.validation_rules['table_max_rows']}",
+            )
+
+        if cols > self.validation_rules["table_max_columns"]:
+            return (
+                False,
+                f"Too many columns ({cols}). Maximum allowed: {self.validation_rules['table_max_columns']}",
+            )
+
+        # Check cell content types
+        for row_idx, row in enumerate(table_data):
+            for col_idx, cell in enumerate(row):
+                if cell is None:
+                    return (
+                        False,
+                        f"Cell ({row_idx},{col_idx}) is None. All cells must be strings, use empty string '' for empty cells.",
+                    )
+
+                if not isinstance(cell, str):
+                    return (
+                        False,
+                        f"Cell ({row_idx},{col_idx}) is {type(cell).__name__}, not string. All cells must be strings. Value: {repr(cell)}",
+                    )
+
+        return True, f"Valid table data: {rows}×{cols} table format"
+
+    def validate_text_formatting_params(
+        self,
+        bold: Optional[bool] = None,
+        italic: Optional[bool] = None,
+        underline: Optional[bool] = None,
+        font_size: Optional[int] = None,
+        font_family: Optional[str] = None,
+        text_color: Optional[str] = None,
+        background_color: Optional[str] = None,
+        link_url: Optional[str] = None,
+    ) -> Tuple[bool, str]:
+        """
+        Validate text formatting parameters.
+
+        Args:
+            bold: Bold setting
+            italic: Italic setting
+            underline: Underline setting
+            font_size: Font size in points
+            font_family: Font family name
+            text_color: Text color in "#RRGGBB" format
+            background_color: Background color in "#RRGGBB" format
+            link_url: Hyperlink URL (http/https)
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        # Check if at least one formatting option is provided
+        formatting_params = [
+            bold,
+            italic,
+            underline,
+            font_size,
+            font_family,
+            text_color,
+            background_color,
+            link_url,
+        ]
+        if all(param is None for param in formatting_params):
+            return (
+                False,
+                "At least one formatting parameter must be provided (bold, italic, underline, font_size, font_family, text_color, background_color, or link_url)",
+            )
+
+        # Validate boolean parameters
+        for param, name in [
+            (bold, "bold"),
+            (italic, "italic"),
+            (underline, "underline"),
+        ]:
+            if param is not None and not isinstance(param, bool):
+                return (
+                    False,
+                    f"{name} parameter must be boolean (True/False), got {type(param).__name__}",
+                )
+
+        # Validate font size
+        if font_size is not None:
+            if not isinstance(font_size, int):
+                return (
+                    False,
+                    f"font_size must be an integer, got {type(font_size).__name__}",
+                )
+
+            min_size, max_size = self.validation_rules["font_size_range"]
+            if not (min_size <= font_size <= max_size):
+                return (
+                    False,
+                    f"font_size must be between {min_size} and {max_size} points, got {font_size}",
+                )
+
+        # Validate font family
+        if font_family is not None:
+            if not isinstance(font_family, str):
+                return (
+                    False,
+                    f"font_family must be a string, got {type(font_family).__name__}",
+                )
+
+            if not font_family.strip():
+                return False, "font_family cannot be empty"
+
+        # Validate colors
+        is_valid, error_msg = self.validate_color_param(text_color, "text_color")
+        if not is_valid:
+            return False, error_msg
+
+        is_valid, error_msg = self.validate_color_param(
+            background_color, "background_color"
+        )
+        if not is_valid:
+            return False, error_msg
+
+        is_valid, error_msg = self.validate_link_url(link_url)
+        if not is_valid:
+            return False, error_msg
+
+        return True, ""
+
+    def validate_link_url(self, link_url: Optional[str]) -> Tuple[bool, str]:
+        """Validate hyperlink URL parameters."""
+        if link_url is None:
+            return True, ""
+
+        if not isinstance(link_url, str):
+            return False, f"link_url must be a string, got {type(link_url).__name__}"
+
+        if not link_url.strip():
+            return False, "link_url cannot be empty"
+
+        parsed = urlparse(link_url)
+        if parsed.scheme not in ("http", "https"):
+            return False, "link_url must start with http:// or https://"
+
+        if not parsed.netloc:
+            return False, "link_url must include a valid host"
+
+        return True, ""
+
+    def validate_paragraph_style_params(
+        self,
+        heading_level: Optional[int] = None,
+        alignment: Optional[str] = None,
+        line_spacing: Optional[float] = None,
+        indent_first_line: Optional[float] = None,
+        indent_start: Optional[float] = None,
+        indent_end: Optional[float] = None,
+        space_above: Optional[float] = None,
+        space_below: Optional[float] = None,
+        named_style_type: Optional[str] = None,
+    ) -> Tuple[bool, str]:
+        """
+        Validate paragraph style parameters.
+
+        Args:
+            heading_level: Heading level 0-6 (0 = NORMAL_TEXT, 1-6 = HEADING_N)
+            alignment: Text alignment - 'START', 'CENTER', 'END', or 'JUSTIFIED'
+            line_spacing: Line spacing multiplier (must be positive)
+            indent_first_line: First line indent in points
+            indent_start: Left/start indent in points
+            indent_end: Right/end indent in points
+            space_above: Space above paragraph in points
+            space_below: Space below paragraph in points
+            named_style_type: Direct named style (TITLE, SUBTITLE, HEADING_1..6, NORMAL_TEXT)
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        style_params = [
+            heading_level,
+            alignment,
+            line_spacing,
+            indent_first_line,
+            indent_start,
+            indent_end,
+            space_above,
+            space_below,
+            named_style_type,
+        ]
+        if all(param is None for param in style_params):
+            return (
+                False,
+                "At least one paragraph style parameter must be provided (heading_level, alignment, line_spacing, indent_first_line, indent_start, indent_end, space_above, space_below, or named_style_type)",
+            )
+
+        if heading_level is not None and named_style_type is not None:
+            return (
+                False,
+                "heading_level and named_style_type are mutually exclusive; provide only one",
+            )
+
+        if named_style_type is not None:
+            valid_styles = [
+                "NORMAL_TEXT",
+                "TITLE",
+                "SUBTITLE",
+                "HEADING_1",
+                "HEADING_2",
+                "HEADING_3",
+                "HEADING_4",
+                "HEADING_5",
+                "HEADING_6",
+            ]
+            if named_style_type not in valid_styles:
+                return (
+                    False,
+                    f"Invalid named_style_type '{named_style_type}'. Must be one of: {', '.join(valid_styles)}",
+                )
+
+        if heading_level is not None:
+            if not isinstance(heading_level, int):
+                return (
+                    False,
+                    f"heading_level must be an integer, got {type(heading_level).__name__}",
+                )
+            min_level, max_level = self.validation_rules["heading_level_range"]
+            if not (min_level <= heading_level <= max_level):
+                return (
+                    False,
+                    f"heading_level must be between {min_level} and {max_level}, got {heading_level}",
+                )
+
+        if alignment is not None:
+            if not isinstance(alignment, str):
+                return (
+                    False,
+                    f"alignment must be a string, got {type(alignment).__name__}",
+                )
+            valid = self.validation_rules["valid_alignments"]
+            if alignment.upper() not in valid:
+                return (
+                    False,
+                    f"alignment must be one of: {', '.join(valid)}, got '{alignment}'",
+                )
+
+        if line_spacing is not None:
+            if not isinstance(line_spacing, (int, float)):
+                return (
+                    False,
+                    f"line_spacing must be a number, got {type(line_spacing).__name__}",
+                )
+            if line_spacing <= 0:
+                return False, "line_spacing must be positive"
+
+        for param, name in [
+            (indent_first_line, "indent_first_line"),
+            (indent_start, "indent_start"),
+            (indent_end, "indent_end"),
+            (space_above, "space_above"),
+            (space_below, "space_below"),
+        ]:
+            if param is not None:
+                if not isinstance(param, (int, float)):
+                    return (
+                        False,
+                        f"{name} must be a number, got {type(param).__name__}",
+                    )
+                # indent_first_line may be negative (hanging indent)
+                if name != "indent_first_line" and param < 0:
+                    return False, f"{name} must be non-negative, got {param}"
+
+        return True, ""
+
+    def validate_color_param(
+        self, color: Optional[str], param_name: str
+    ) -> Tuple[bool, str]:
+        """Validate color parameters (hex string "#RRGGBB")."""
+        if color is None:
+            return True, ""
+
+        if not isinstance(color, str):
+            return False, f"{param_name} must be a hex string like '#RRGGBB'"
+
+        if len(color) != 7 or not color.startswith("#"):
+            return False, f"{param_name} must be a hex string like '#RRGGBB'"
+
+        hex_color = color[1:]
+        if any(c not in "0123456789abcdefABCDEF" for c in hex_color):
+            return False, f"{param_name} must be a hex string like '#RRGGBB'"
+
+        return True, ""
+
+    def validate_index(self, index: int, context: str = "Index") -> Tuple[bool, str]:
+        """
+        Validate a single document index.
+
+        Args:
+            index: Index to validate
+            context: Context description for error messages
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        if not isinstance(index, int):
+            return False, f"{context} must be an integer, got {type(index).__name__}"
+
+        if index < 0:
+            return (
+                False,
+                f"{context} {index} is negative. You MUST call inspect_doc_structure first to get the proper insertion index.",
+            )
+
+        return True, ""
+
+    def validate_index_range(
+        self,
+        start_index: int,
+        end_index: Optional[int] = None,
+        document_length: Optional[int] = None,
+    ) -> Tuple[bool, str]:
+        """
+        Validate document index ranges.
+
+        Args:
+            start_index: Starting index
+            end_index: Ending index (optional)
+            document_length: Total document length for bounds checking
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        # Validate start_index
+        if not isinstance(start_index, int):
+            return (
+                False,
+                f"start_index must be an integer, got {type(start_index).__name__}",
+            )
+
+        if start_index < 0:
+            return False, f"start_index cannot be negative, got {start_index}"
+
+        # Validate end_index if provided
+        if end_index is not None:
+            if not isinstance(end_index, int):
+                return (
+                    False,
+                    f"end_index must be an integer, got {type(end_index).__name__}",
+                )
+
+            if end_index <= start_index:
+                return (
+                    False,
+                    f"end_index ({end_index}) must be greater than start_index ({start_index})",
+                )
+
+        # Validate against document length if provided
+        if document_length is not None:
+            if start_index >= document_length:
+                return (
+                    False,
+                    f"start_index ({start_index}) exceeds document length ({document_length})",
+                )
+
+            if end_index is not None and end_index > document_length:
+                return (
+                    False,
+                    f"end_index ({end_index}) exceeds document length ({document_length})",
+                )
+
+        return True, ""
+
+    def validate_element_insertion_params(
+        self, element_type: str, index: int, **kwargs
+    ) -> Tuple[bool, str]:
+        """
+        Validate parameters for element insertion.
+
+        Args:
+            element_type: Type of element to insert
+            index: Insertion index
+            **kwargs: Additional parameters specific to element type
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        # Validate element type
+        if element_type not in self.validation_rules["valid_element_types"]:
+            valid_types = ", ".join(self.validation_rules["valid_element_types"])
+            return (
+                False,
+                f"Invalid element_type '{element_type}'. Must be one of: {valid_types}",
+            )
+
+        # Validate index
+        if not isinstance(index, int) or index < 0:
+            return False, f"index must be a non-negative integer, got {index}"
+
+        # Validate element-specific parameters
+        if element_type == "table":
+            rows = kwargs.get("rows")
+            columns = kwargs.get("columns")
+
+            if not rows or not columns:
+                return False, "Table insertion requires 'rows' and 'columns' parameters"
+
+            if not isinstance(rows, int) or not isinstance(columns, int):
+                return False, "Table rows and columns must be integers"
+
+            if rows <= 0 or columns <= 0:
+                return False, "Table rows and columns must be positive integers"
+
+            if rows > self.validation_rules["table_max_rows"]:
+                return (
+                    False,
+                    f"Too many rows ({rows}). Maximum: {self.validation_rules['table_max_rows']}",
+                )
+
+            if columns > self.validation_rules["table_max_columns"]:
+                return (
+                    False,
+                    f"Too many columns ({columns}). Maximum: {self.validation_rules['table_max_columns']}",
+                )
+
+        elif element_type == "list":
+            list_type = kwargs.get("list_type")
+
+            if not list_type:
+                return False, "List insertion requires 'list_type' parameter"
+
+            if list_type not in self.validation_rules["valid_list_types"]:
+                valid_types = ", ".join(self.validation_rules["valid_list_types"])
+                return (
+                    False,
+                    f"Invalid list_type '{list_type}'. Must be one of: {valid_types}",
+                )
+
+        return True, ""
+
+    def validate_header_footer_params(
+        self, section_type: str, header_footer_type: str = "DEFAULT"
+    ) -> Tuple[bool, str]:
+        """
+        Validate header/footer operation parameters.
+
+        Args:
+            section_type: Type of section ("header" or "footer")
+            header_footer_type: Specific header/footer type
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        if section_type not in self.validation_rules["valid_section_types"]:
+            valid_types = ", ".join(self.validation_rules["valid_section_types"])
+            return (
+                False,
+                f"section_type must be one of: {valid_types}, got '{section_type}'",
+            )
+
+        if header_footer_type not in self.validation_rules["valid_header_footer_types"]:
+            valid_types = ", ".join(self.validation_rules["valid_header_footer_types"])
+            return (
+                False,
+                f"header_footer_type must be one of: {valid_types}, got '{header_footer_type}'",
+            )
+
+        return True, ""
+
+    def validate_batch_operations(
+        self, operations: List[Dict[str, Any]]
+    ) -> Tuple[bool, str]:
+        """
+        Validate a list of batch operations.
+
+        Args:
+            operations: List of operation dictionaries
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        if not operations:
+            return False, "Operations list cannot be empty"
+
+        if not isinstance(operations, list):
+            return False, f"Operations must be a list, got {type(operations).__name__}"
+
+        # Validate each operation
+        for i, op in enumerate(operations):
+            if not isinstance(op, dict):
+                return (
+                    False,
+                    f"Operation {i + 1} must be a dictionary, got {type(op).__name__}",
+                )
+
+            if "type" not in op:
+                return False, f"Operation {i + 1} missing required 'type' field"
+
+            # Validate required fields for the operation type
+            is_valid, error_msg = validate_operation(op)
+            if not is_valid:
+                return False, f"Operation {i + 1}: {error_msg}"
+
+            op_type = op["type"]
+
+            if op_type == "format_text":
+                is_valid, error_msg = self.validate_text_formatting_params(
+                    op.get("bold"),
+                    op.get("italic"),
+                    op.get("underline"),
+                    op.get("font_size"),
+                    op.get("font_family"),
+                    op.get("text_color"),
+                    op.get("background_color"),
+                    op.get("link_url"),
+                )
+                if not is_valid:
+                    return False, f"Operation {i + 1} (format_text): {error_msg}"
+
+                is_valid, error_msg = self.validate_index_range(
+                    op["start_index"], op["end_index"]
+                )
+                if not is_valid:
+                    return False, f"Operation {i + 1} (format_text): {error_msg}"
+
+            elif op_type == "update_paragraph_style":
+                is_valid, error_msg = self.validate_paragraph_style_params(
+                    op.get("heading_level"),
+                    op.get("alignment"),
+                    op.get("line_spacing"),
+                    op.get("indent_first_line"),
+                    op.get("indent_start"),
+                    op.get("indent_end"),
+                    op.get("space_above"),
+                    op.get("space_below"),
+                    op.get("named_style_type"),
+                )
+                if not is_valid:
+                    return (
+                        False,
+                        f"Operation {i + 1} (update_paragraph_style): {error_msg}",
+                    )
+
+                is_valid, error_msg = self.validate_index_range(
+                    op["start_index"], op["end_index"]
+                )
+                if not is_valid:
+                    return (
+                        False,
+                        f"Operation {i + 1} (update_paragraph_style): {error_msg}",
+                    )
+
+        return True, ""
+
+    def validate_text_content(
+        self, text: str, max_length: Optional[int] = None
+    ) -> Tuple[bool, str]:
+        """
+        Validate text content for insertion.
+
+        Args:
+            text: Text to validate
+            max_length: Maximum allowed length
+
+        Returns:
+            Tuple of (is_valid, error_message)
+        """
+        if not isinstance(text, str):
+            return False, f"Text must be a string, got {type(text).__name__}"
+
+        max_len = max_length or self.validation_rules["max_text_length"]
+        if len(text) > max_len:
+            return False, f"Text too long ({len(text)} characters). Maximum: {max_len}"
+
+        return True, ""
+
+    def get_validation_summary(self) -> Dict[str, Any]:
+        """
+        Get a summary of all validation rules and constraints.
+
+        Returns:
+            Dictionary containing validation rules
+        """
+        return {
+            "constraints": self.validation_rules.copy(),
+            "supported_operations": {
+                "table_operations": ["create_table", "populate_table"],
+                "text_operations": [
+                    "insert_text",
+                    "format_text",
+                    "find_replace",
+                    "update_paragraph_style",
+                ],
+                "element_operations": [
+                    "insert_table",
+                    "insert_list",
+                    "insert_page_break",
+                ],
+                "header_footer_operations": ["update_header", "update_footer"],
+            },
+            "data_formats": {
+                "table_data": "2D list of strings: [['col1', 'col2'], ['row1col1', 'row1col2']]",
+                "text_formatting": "Optional boolean/integer parameters for styling",
+                "document_indices": "Non-negative integers for position specification",
+            },
+        }