"""
Text Processing Tools for MCP
"""
import re
from typing import List
from ..core.types import MCPTool


class TextTools:
    """Collection of text processing tools"""

    @staticmethod
    def get_tools() -> List[MCPTool]:
        """Get all text tools"""
        return [
            TextTools._create_word_count_tool(),
            TextTools._create_text_search_tool(),
            TextTools._create_text_replace_tool(),
            TextTools._create_text_uppercase_tool(),
            TextTools._create_text_lowercase_tool(),
            TextTools._create_text_length_tool(),
            TextTools._create_generate_greeting_tool(),
        ]

    @staticmethod
    def _create_word_count_tool() -> MCPTool:
        """Create word count tool"""
        async def count_words(text: str) -> int:
            """Count the number of words in a text"""
            words = text.strip().split()
            return len(words)

        return MCPTool(
            name="count_words",
            description="Count the number of words in a text",
            input_schema={
                "type": "object",
                "properties": {
                    "text": {"type": "string", "description": "Text to count words in"},
                },
                "required": ["text"],
            },
            handler=count_words,
        )

    @staticmethod
    def _create_text_search_tool() -> MCPTool:
        """Create text search tool"""
        async def search_text(text: str, pattern: str, case_sensitive: bool = False) -> List[str]:
            """Search for a pattern in text and return all matches"""
            flags = 0 if case_sensitive else re.IGNORECASE
            matches = re.findall(pattern, text, flags)
            return matches

        return MCPTool(
            name="search_text",
            description="Search for a pattern in text and return all matches",
            input_schema={
                "type": "object",
                "properties": {
                    "text": {"type": "string", "description": "Text to search in"},
                    "pattern": {"type": "string", "description": "Regular expression pattern to search for"},
                    "case_sensitive": {"type": "boolean", "description": "Whether search should be case sensitive", "default": False},
                },
                "required": ["text", "pattern"],
            },
            handler=search_text,
        )

    @staticmethod
    def _create_text_replace_tool() -> MCPTool:
        """Create text replace tool"""
        async def replace_text(text: str, old_pattern: str, new_text: str) -> str:
            """Replace all occurrences of a pattern in text"""
            return text.replace(old_pattern, new_text)

        return MCPTool(
            name="replace_text",
            description="Replace all occurrences of a pattern in text",
            input_schema={
                "type": "object",
                "properties": {
                    "text": {"type": "string", "description": "Original text"},
                    "old_pattern": {"type": "string", "description": "Text to replace"},
                    "new_text": {"type": "string", "description": "Replacement text"},
                },
                "required": ["text", "old_pattern", "new_text"],
            },
            handler=replace_text,
        )

    @staticmethod
    def _create_text_uppercase_tool() -> MCPTool:
        """Create uppercase tool"""
        async def to_uppercase(text: str) -> str:
            """Convert text to uppercase"""
            return text.upper()

        return MCPTool(
            name="to_uppercase",
            description="Convert text to uppercase",
            input_schema={
                "type": "object",
                "properties": {
                    "text": {"type": "string", "description": "Text to convert to uppercase"},
                },
                "required": ["text"],
            },
            handler=to_uppercase,
        )

    @staticmethod
    def _create_text_lowercase_tool() -> MCPTool:
        """Create lowercase tool"""
        async def to_lowercase(text: str) -> str:
            """Convert text to lowercase"""
            return text.lower()

        return MCPTool(
            name="to_lowercase",
            description="Convert text to lowercase",
            input_schema={
                "type": "object",
                "properties": {
                    "text": {"type": "string", "description": "Text to convert to lowercase"},
                },
                "required": ["text"],
            },
            handler=to_lowercase,
        )

    @staticmethod
    def _create_text_length_tool() -> MCPTool:
        """Create text length tool"""
        async def text_length(text: str) -> int:
            """Get the length of text"""
            return len(text)

        return MCPTool(
            name="text_length",
            description="Get the length of text (number of characters)",
            input_schema={
                "type": "object",
                "properties": {
                    "text": {"type": "string", "description": "Text to measure length of"},
                },
                "required": ["text"],
            },
            handler=text_length,
        )

    @staticmethod
    def _create_generate_greeting_tool() -> MCPTool:
        """Create greeting generation tool"""
        async def generate_greeting(name: str, style: str = "casual") -> str:
            """Generate a personalized greeting"""
            name = name.strip()
            if not name:
                raise ValueError("Name cannot be empty")

            if style == "casual":
                return f"Hey {name}! Welcome! 👋"
            elif style == "formal":
                return f"Good day, {name}. Welcome to our platform."
            elif style == "professional":
                return f"Hello, {name}. Thank you for joining us."
            else:
                return f"Hi {name}! Welcome!"

        return MCPTool(
            name="generate_greeting",
            description="Generate a personalized greeting with different styles",
            input_schema={
                "type": "object",
                "properties": {
                    "name": {"type": "string", "description": "Person's name"},
                    "style": {
                        "type": "string",
                        "enum": ["casual", "formal", "professional"],
                        "description": "Greeting style",
                        "default": "casual"
                    },
                },
                "required": ["name"],
            },
            handler=generate_greeting,
        )