import subprocess
import tempfile
import time

import duckduckgo_search
import requests
from markdownify import markdownify as md
from readability.readability import Document


class Tool:
    def __init__(self, name: str, description: str, arguments: dict, returns: str):
        self.name = name
        self.description = description
        self.arguments = arguments
        self.returns = returns

    def execute(self, arguments: dict) -> str:
        pass


class ToolManager:
    def __init__(self):
        self.tools = []

    def add_tool(self, tool: Tool):
        self.tools.append(tool)

    def get_tool(self, name: str) -> Tool:
        for tool in self.tools:
            if tool.name == name:
                return tool
        return None

    def get_tools_and_descriptions_for_prompt(self):
        return "\n".join([f"{tool.name}: {tool.description}" for tool in self.tools])

    def get_tools_for_ollama_dict(self):
        return [
            {
                "type": "function",
                "function": {
                    "name": tool.name,
                    "description": tool.description,
                    "parameters": tool.arguments,
                },
            }
            for tool in self.tools
        ]


class DefaultToolManager(ToolManager):
    def __init__(self):
        super().__init__()
        self.add_tool(SearchTool())
        self.add_tool(GetReadablePageContentsTool())
        self.add_tool(CalculatorTool())
        self.add_tool(PythonCodeTool())


class SearchTool(Tool):
    def __init__(self):
        super().__init__(
            "search_web",
            "Search the internet for information",
            {
                "type": "object",
                "properties": {
                    "query": {"type": "string", "description": "The search query"}
                },
            },
            "results:list[string]",
        )

    def execute(self, arg: dict) -> str:
        res = duckduckgo_search.DDGS().text(arg["query"], max_results=5)
        return "\n\n".join([f"{r['title']}\n{r['body']}\n{r['href']}" for r in res])


def get_readable_page_contents(url: str) -> str:
    try:
        response = requests.get(url)
        response.raise_for_status()
        doc = Document(response.content)
        content = doc.summary()
        return md(content)
    except Exception as e:
        return f"Error fetching readable content: {str(e)}"


class GetReadablePageContentsTool(Tool):
    def __init__(self):
        super().__init__(
            "get_readable_page_contents",
            "Get the contents of a web page in a readable format",
            {
                "type": "object",
                "properties": {
                    "url": {"type": "string", "description": "The url of the web page"}
                },
            },
            "contents:string",
        )

    def execute(self, arg: dict) -> str:
        return get_readable_page_contents(arg["url"])


class CalculatorTool(Tool):
    def __init__(self):
        super().__init__(
            "calculator",
            "Perform a calculation using python's eval function",
            {
                "type": "object",
                "properties": {
                    "expression": {
                        "type": "string",
                        "description": "The mathematical expression to evaluate, should be a python mathematical expression",
                    }
                },
            },
            "result:string",
        )

    def execute(self, arg: dict) -> str:
        try:
            return str(eval(arg["expression"]))
        except Exception as e:
            return f"Error executing code: {str(e)}"


class PythonCodeTool(Tool):
    def __init__(self):
        super().__init__(
            "python_code",
            "Execute python code using a temporary file and a subprocess. You must print results to stdout.",
            {
                "type": "object",
                "properties": {
                    "code": {
                        "type": "string",
                        "description": "The python code to execute, can be multiline",
                    }
                },
            },
            "result:string",
        )

    def execute(self, arg: dict) -> str:
        try:
            with tempfile.NamedTemporaryFile(
                suffix=".py", mode="w", delete=False
            ) as temp_file:
                temp_file.write(arg["code"])
                temp_file.flush()

                start_time = time.time()
                process = subprocess.Popen(
                    ["python", temp_file.name],
                    stdout=subprocess.PIPE,
                    stderr=subprocess.PIPE,
                    text=True,
                )
                stdout, stderr = process.communicate(timeout=10)  # 10 second timeout
                end_time = time.time()
                execution_time = end_time - start_time

                result = {
                    "stdout": stdout,
                    "stderr": stderr,
                    "return_value": process.returncode,
                    "execution_time": execution_time,
                }

        except subprocess.TimeoutExpired:
            process.kill()
            return "Error: Code execution timed out after 10 seconds"
        except Exception as e:
            return f"Error executing code: {str(e)}"

        return "\n".join([f"{k}:\n{v}" for k, v in result.items()])