"""
System Tools for MCP
"""
import os
import platform
import psutil
from datetime import datetime
from typing import Dict, Any, List
from ..core.types import MCPTool


class SystemTools:
    """Collection of system-related tools"""

    @staticmethod
    def get_tools() -> List[MCPTool]:
        """Get all system tools"""
        return [
            SystemTools._create_get_system_info_tool(),
            SystemTools._create_get_current_time_tool(),
            SystemTools._create_list_directory_tool(),
            SystemTools._create_get_file_info_tool(),
            SystemTools._create_get_environment_variable_tool(),
        ]

    @staticmethod
    def _create_get_system_info_tool() -> MCPTool:
        """Create system info tool"""
        async def get_system_info() -> Dict[str, Any]:
            """Get basic system information"""
            try:
                return {
                    "platform": platform.system(),
                    "platform_version": platform.version(),
                    "architecture": platform.machine(),
                    "processor": platform.processor(),
                    "python_version": platform.python_version(),
                    "cpu_count": os.cpu_count(),
                    "memory_total": psutil.virtual_memory().total if psutil else "psutil not available",
                    "memory_available": psutil.virtual_memory().available if psutil else "psutil not available",
                }
            except Exception as e:
                return {"error": f"Could not retrieve system info: {str(e)}"}

        return MCPTool(
            name="get_system_info",
            description="Get basic system information including OS, CPU, and memory details",
            input_schema={"type": "object", "properties": {}},
            handler=get_system_info,
        )

    @staticmethod
    def _create_get_current_time_tool() -> MCPTool:
        """Create current time tool"""
        async def get_current_time() -> str:
            """Get the current date and time"""
            now = datetime.now()
            return now.strftime("%Y-%m-%d %H:%M:%S")

        return MCPTool(
            name="get_current_time",
            description="Get the current date and time in YYYY-MM-DD HH:MM:SS format",
            input_schema={"type": "object", "properties": {}},
            handler=get_current_time,
        )

    @staticmethod
    def _create_list_directory_tool() -> MCPTool:
        """Create directory listing tool"""
        async def list_directory(path: str = ".") -> List[str]:
            """List contents of a directory"""
            try:
                if not os.path.exists(path):
                    raise ValueError(f"Path does not exist: {path}")

                if not os.path.isdir(path):
                    raise ValueError(f"Path is not a directory: {path}")

                return os.listdir(path)
            except Exception as e:
                raise ValueError(f"Could not list directory: {str(e)}")

        return MCPTool(
            name="list_directory",
            description="List the contents of a directory",
            input_schema={
                "type": "object",
                "properties": {
                    "path": {
                        "type": "string",
                        "description": "Directory path to list",
                        "default": "."
                    },
                },
            },
            handler=list_directory,
        )

    @staticmethod
    def _create_get_file_info_tool() -> MCPTool:
        """Create file info tool"""
        async def get_file_info(file_path: str) -> Dict[str, Any]:
            """Get information about a file"""
            try:
                if not os.path.exists(file_path):
                    raise ValueError(f"File does not exist: {file_path}")

                stat = os.stat(file_path)
                return {
                    "name": os.path.basename(file_path),
                    "path": os.path.abspath(file_path),
                    "size": stat.st_size,
                    "is_file": os.path.isfile(file_path),
                    "is_directory": os.path.isdir(file_path),
                    "modified_time": datetime.fromtimestamp(stat.st_mtime).isoformat(),
                    "created_time": datetime.fromtimestamp(stat.st_ctime).isoformat(),
                }
            except Exception as e:
                raise ValueError(f"Could not get file info: {str(e)}")

        return MCPTool(
            name="get_file_info",
            description="Get detailed information about a file or directory",
            input_schema={
                "type": "object",
                "properties": {
                    "file_path": {"type": "string", "description": "Path to the file or directory"},
                },
                "required": ["file_path"],
            },
            handler=get_file_info,
        )

    @staticmethod
    def _create_get_environment_variable_tool() -> MCPTool:
        """Create environment variable tool"""
        async def get_environment_variable(name: str, default_value: str = "") -> str:
            """Get the value of an environment variable"""
            return os.getenv(name, default_value)

        return MCPTool(
            name="get_environment_variable",
            description="Get the value of an environment variable",
            input_schema={
                "type": "object",
                "properties": {
                    "name": {"type": "string", "description": "Name of the environment variable"},
                    "default_value": {
                        "type": "string",
                        "description": "Default value if variable is not set",
                        "default": ""
                    },
                },
                "required": ["name"],
            },
            handler=get_environment_variable,
        )