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				|  |  | -from typing import Any, Optional
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				|  |  | -
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				|  |  | -from pydantic import BaseModel, Field
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				|  |  | -
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				|  |  | -from core.tools.entities.tool_entities import ToolInvokeMessage
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				|  |  | -from core.tools.tool.builtin_tool import BuiltinTool
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				|  |  | -
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				|  |  | -
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				|  |  | -class DuckDuckGoSearchAPIWrapper(BaseModel):
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				|  |  | -    """Wrapper for DuckDuckGo Search API.
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				|  |  | -
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				|  |  | -    Free and does not require any setup.
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				|  |  | -    """
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				|  |  | -
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				|  |  | -    region: Optional[str] = "wt-wt"
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				|  |  | -    safesearch: str = "moderate"
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				|  |  | -    time: Optional[str] = "y"
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				|  |  | -    max_results: int = 5
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				|  |  | -
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				|  |  | -    def get_snippets(self, query: str) -> list[str]:
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				|  |  | -        """Run query through DuckDuckGo and return concatenated results."""
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				|  |  | -        from duckduckgo_search import DDGS
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				|  |  | -
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				|  |  | -        with DDGS() as ddgs:
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				|  |  | -            results = ddgs.text(
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				|  |  | -                query,
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				|  |  | -                region=self.region,
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				|  |  | -                safesearch=self.safesearch,
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				|  |  | -                timelimit=self.time,
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				|  |  | -            )
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				|  |  | -            if results is None:
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				|  |  | -                return ["No good DuckDuckGo Search Result was found"]
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				|  |  | -            snippets = []
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				|  |  | -            for i, res in enumerate(results, 1):
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				|  |  | -                if res is not None:
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				|  |  | -                    snippets.append(res["body"])
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				|  |  | -                if len(snippets) == self.max_results:
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				|  |  | -                    break
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				|  |  | -        return snippets
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				|  |  | -
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				|  |  | -    def run(self, query: str) -> str:
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				|  |  | -        snippets = self.get_snippets(query)
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				|  |  | -        return " ".join(snippets)
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				|  |  | -
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				|  |  | -    def results(
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				|  |  | -        self, query: str, num_results: int, backend: str = "api"
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				|  |  | -    ) -> list[dict[str, str]]:
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				|  |  | -        """Run query through DuckDuckGo and return metadata.
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				|  |  | -
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				|  |  | -        Args:
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				|  |  | -            query: The query to search for.
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				|  |  | -            num_results: The number of results to return.
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				|  |  | -
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				|  |  | -        Returns:
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				|  |  | -            A list of dictionaries with the following keys:
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				|  |  | -                snippet - The description of the result.
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				|  |  | -                title - The title of the result.
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				|  |  | -                link - The link to the result.
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				|  |  | -        """
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				|  |  | -        from duckduckgo_search import DDGS
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				|  |  | -
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				|  |  | -        with DDGS() as ddgs:
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				|  |  | -            results = ddgs.text(
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				|  |  | -                query,
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				|  |  | -                region=self.region,
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				|  |  | -                safesearch=self.safesearch,
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				|  |  | -                timelimit=self.time,
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				|  |  | -                backend=backend,
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				|  |  | -            )
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				|  |  | -            if results is None:
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				|  |  | -                return [{"Result": "No good DuckDuckGo Search Result was found"}]
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				|  |  | -
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				|  |  | -            def to_metadata(result: dict) -> dict[str, str]:
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				|  |  | -                if backend == "news":
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				|  |  | -                    return {
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				|  |  | -                        "date": result["date"],
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				|  |  | -                        "title": result["title"],
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				|  |  | -                        "snippet": result["body"],
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				|  |  | -                        "source": result["source"],
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				|  |  | -                        "link": result["url"],
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				|  |  | -                    }
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				|  |  | -                return {
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				|  |  | -                    "snippet": result["body"],
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				|  |  | -                    "title": result["title"],
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				|  |  | -                    "link": result["href"],
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				|  |  | -                }
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				|  |  | -
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				|  |  | -            formatted_results = []
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				|  |  | -            for i, res in enumerate(results, 1):
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				|  |  | -                if res is not None:
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				|  |  | -                    formatted_results.append(to_metadata(res))
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				|  |  | -                if len(formatted_results) == num_results:
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				|  |  | -                    break
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				|  |  | -        return formatted_results
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				|  |  | -
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				|  |  | -
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				|  |  | -class DuckDuckGoSearchRun(BaseModel):
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				|  |  | -    """Tool that queries the DuckDuckGo search API."""
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				|  |  | -
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				|  |  | -    name = "duckduckgo_search"
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				|  |  | -    description = (
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				|  |  | -        "A wrapper around DuckDuckGo Search. "
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				|  |  | -        "Useful for when you need to answer questions about current events. "
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				|  |  | -        "Input should be a search query."
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				|  |  | -    )
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				|  |  | -    api_wrapper: DuckDuckGoSearchAPIWrapper = Field(
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				|  |  | -        default_factory=DuckDuckGoSearchAPIWrapper
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				|  |  | -    )
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				|  |  | -
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				|  |  | -    def _run(
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				|  |  | -        self,
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				|  |  | -        query: str,
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				|  |  | -    ) -> str:
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				|  |  | -        """Use the tool."""
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				|  |  | -        return self.api_wrapper.run(query)
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				|  |  | -
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				|  |  | -
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				|  |  | -class DuckDuckGoSearchResults(BaseModel):
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				|  |  | -    """Tool that queries the DuckDuckGo search API and gets back json."""
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				|  |  | -
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				|  |  | -    name = "DuckDuckGo Results JSON"
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				|  |  | -    description = (
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				|  |  | -        "A wrapper around Duck Duck Go Search. "
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				|  |  | -        "Useful for when you need to answer questions about current events. "
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				|  |  | -        "Input should be a search query. Output is a JSON array of the query results"
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				|  |  | -    )
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				|  |  | -    num_results: int = 4
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				|  |  | -    api_wrapper: DuckDuckGoSearchAPIWrapper = Field(
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				|  |  | -        default_factory=DuckDuckGoSearchAPIWrapper
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				|  |  | -    )
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				|  |  | -    backend: str = "api"
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				|  |  | -
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				|  |  | -    def _run(
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				|  |  | -        self,
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				|  |  | -        query: str,
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				|  |  | -    ) -> str:
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				|  |  | -        """Use the tool."""
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				|  |  | -        res = self.api_wrapper.results(query, self.num_results, backend=self.backend)
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				|  |  | -        res_strs = [", ".join([f"{k}: {v}" for k, v in d.items()]) for d in res]
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				|  |  | -        return ", ".join([f"[{rs}]" for rs in res_strs])
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				|  |  | -
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				|  |  | -class DuckDuckGoInput(BaseModel):
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				|  |  | -    query: str = Field(..., description="Search query.")
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				|  |  | -
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				|  |  | -class DuckDuckGoSearchTool(BuiltinTool):
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				|  |  | -    """
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				|  |  | -    Tool for performing a search using DuckDuckGo search engine.
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				|  |  | -    """
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				|  |  | -
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				|  |  | -    def _invoke(self, user_id: str, tool_parameters: dict[str, Any]) -> ToolInvokeMessage | list[ToolInvokeMessage]:
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				|  |  | -        """
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				|  |  | -        Invoke the DuckDuckGo search tool.
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				|  |  | -
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				|  |  | -        Args:
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				|  |  | -            user_id (str): The ID of the user invoking the tool.
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				|  |  | -            tool_parameters (dict[str, Any]): The parameters for the tool invocation.
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				|  |  | -
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				|  |  | -        Returns:
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				|  |  | -            ToolInvokeMessage | list[ToolInvokeMessage]: The result of the tool invocation.
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				|  |  | -        """
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				|  |  | -        query = tool_parameters.get('query', '')
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				|  |  | -
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				|  |  | -        if not query:
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				|  |  | -            return self.create_text_message('Please input query')
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				|  |  | -
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				|  |  | -        tool = DuckDuckGoSearchRun(args_schema=DuckDuckGoInput)
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				|  |  | -
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				|  |  | -        result = tool._run(query)
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				|  |  | -
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				|  |  | -        return self.create_text_message(self.summary(user_id=user_id, content=result))
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				|  |  | -    
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