"""Tavily web search class."""

import logging
import os
from dataclasses import dataclass
from modules.interfaces.interface_web_model import (
    WebCrawlBase,
    WebCrawlDocumentData,
    WebCrawlRequest,
    WebScrapeActionDocument,
    WebScrapeActionResult,
    WebScrapeBase,
    WebScrapeDocumentData,
    WebScrapeRequest,
    WebSearchBase,
    WebSearchRequest,
    WebSearchActionResult,
    WebSearchActionDocument,
    WebSearchDocumentData,
    WebCrawlActionDocument,
    WebCrawlActionResult,
)

# from modules.interfaces.interfaceChatModel import ActionResult, ActionDocument
from tavily import AsyncTavilyClient
from modules.shared.timezoneUtils import get_utc_timestamp


logger = logging.getLogger(__name__)


@dataclass
class TavilySearchResult:
    title: str
    url: str


@dataclass
class TavilyCrawlResult:
    url: str
    content: str


@dataclass
class ConnectorTavily(WebSearchBase, WebCrawlBase, WebScrapeBase):
    client: AsyncTavilyClient = None

    @classmethod
    async def create(cls):
        return cls(client=AsyncTavilyClient(api_key=os.getenv("TAVILY_API_KEY")))

    async def search_urls(self, request: WebSearchRequest) -> WebSearchActionResult:
        """Handles the web search request.

        Takes a query and returns a list of URLs.
        """
        # Step 1: Search
        try:
            search_results = await self._search(request.query, request.max_results)
        except Exception as e:
            return WebSearchActionResult(success=False, error=str(e))

        # Step 2: Build ActionResult
        try:
            result = self._build_search_action_result(search_results)
        except Exception as e:
            return WebSearchActionResult(success=False, error=str(e))

        return result

    async def crawl_urls(self, request: WebCrawlRequest) -> WebCrawlActionResult:
        """Crawls the given URLs and returns the extracted text content."""
        # Step 1: Crawl
        try:
            crawl_results = await self._crawl(request.urls)
        except Exception as e:
            return WebCrawlActionResult(success=False, error=str(e))

        # Step 2: Build ActionResult
        try:
            result = self._build_crawl_action_result(crawl_results)
        except Exception as e:
            return WebCrawlActionResult(success=False, error=str(e))

        return result

    async def scrape(self, request: WebScrapeRequest) -> WebScrapeActionResult:
        """Turns a query in a list of urls with extracted content."""
        # Step 1: Search
        try:
            search_results = await self._search(request.query, request.max_results)
        except Exception as e:
            return WebScrapeActionResult(success=False, error=str(e))

        # Step 2: Crawl
        try:
            urls = [result.url for result in search_results]
            crawl_results = await self._crawl(urls)
        except Exception as e:
            return WebScrapeActionResult(success=False, error=str(e))

        # Step 3: Build ActionResult
        try:
            result = self._build_scrape_action_result(crawl_results)
        except Exception as e:
            return WebScrapeActionResult(success=False, error=str(e))

        return result

    async def _search(self, query: str, max_results: int) -> list[TavilySearchResult]:
        """Calls the Tavily API to perform a web search."""
        # Make sure max_results is within the allowed range
        if max_results < 0 or max_results > 20:
            raise ValueError("max_results must be between 0 and 20")

        # Perform actual API call
        response = await self.client.search(query=query, max_results=max_results)

        logger.info(f"Tavily API response:\n{response}")

        return [
            TavilySearchResult(title=result["title"], url=result["url"])
            for result in response["results"]
        ]

    def _build_search_action_result(
        self, search_results: list[TavilySearchResult]
    ) -> WebSearchActionResult:
        """Builds the ActionResult from the search results."""
        documents = []
        for result in search_results:
            document_name = f"web_search_{get_utc_timestamp()}.txt"
            document_data = WebSearchDocumentData(title=result.title, url=result.url)
            mime_type = "application/json"
            doc = WebSearchActionDocument(
                documentName=document_name,
                documentData=document_data,
                mimeType=mime_type,
            )
            documents.append(doc)

        return WebSearchActionResult(
            success=True, documents=documents, resultLabel="web_search_results"
        )

    async def _crawl(self, urls: list) -> list[str]:
        """Calls the Tavily API to extract text content from URLs."""
        response = await self.client.extract(
            urls=urls, extract_depth="advanced", format="text"
        )
        return [
            TavilyCrawlResult(url=result["url"], content=result["raw_content"])
            for result in response["results"]
        ]

    def _build_crawl_action_result(
        self, crawl_results: list[TavilyCrawlResult]
    ) -> WebCrawlActionResult:
        """Builds the ActionResult from the crawl results."""
        documents = []
        for result in crawl_results:
            document_name = f"web_crawl_{get_utc_timestamp()}.txt"
            doc_data = WebCrawlDocumentData(
                url=result["url"], content=result["raw_content"]
            )
            mime_type = "application/json"
            doc = WebCrawlActionDocument(
                documentName=document_name,
                documentData=doc_data,
                mimeType=mime_type,
            )
            documents.append(doc)

        return WebCrawlActionResult(
            success=True, documents=documents, resultLabel="web_crawl_results"
        )

    def _build_scrape_action_result(
        self, crawl_results: list[TavilyCrawlResult]
    ) -> WebScrapeActionResult:
        """Builds the ActionResult from the scrape results."""
        documents = []
        for result in crawl_results:
            document_name = f"web_scrape_{get_utc_timestamp()}.txt"
            doc_data = WebScrapeDocumentData(url=result.url, content=result.content)
            mime_type = "application/json"
            doc = WebScrapeActionDocument(
                documentName=document_name,
                documentData=doc_data,
                mimeType=mime_type,
            )
            documents.append(doc)

        return WebScrapeActionResult(
            success=True, documents=documents, resultLabel="web_scrape_results"
        )