"""Tavily web search class."""

import logging
import os
from dataclasses import dataclass
from modules.interfaces.interfaceWebModel import (
    WebCrawlBase,
    WebCrawlDocumentData,
    WebCrawlRequest,
    WebCrawlResultItem,
    WebScrapeActionDocument,
    WebScrapeActionResult,
    WebScrapeBase,
    WebScrapeDocumentData,
    WebScrapeRequest,
    WebScrapeResultItem,
    WebSearchBase,
    WebSearchRequest,
    WebSearchActionResult,
    WebSearchActionDocument,
    WebSearchDocumentData,
    WebSearchResultItem,
    WebCrawlActionDocument,
    WebCrawlActionResult,
    get_web_search_min_results,
    get_web_search_max_results,
)

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


logger = logging.getLogger(__name__)


# Configuration loading functions
def get_web_crawl_timeout() -> int:
    """Get web crawl timeout from configuration"""
    return int(APP_CONFIG.get("Web_Crawl_TIMEOUT", "30"))


def get_web_crawl_max_retries() -> int:
    """Get web crawl max retries from configuration"""
    return int(APP_CONFIG.get("Web_Crawl_MAX_RETRIES", "3"))


def get_web_crawl_retry_delay() -> int:
    """Get web crawl retry delay from configuration"""
    return int(APP_CONFIG.get("Web_Crawl_RETRY_DELAY", "2"))


@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):
        api_key = APP_CONFIG.get("Connector_WebTavily_API_KEY")
        if not api_key:
            raise ValueError("Tavily API key not configured. Please set Connector_WebTavily_API_KEY in config.ini")
        return cls(client=AsyncTavilyClient(api_key=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, request.query)
        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, request.urls)
        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, request.query)
        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
        min_results = get_web_search_min_results()
        max_allowed_results = get_web_search_max_results()
        if max_results < min_results or max_results > max_allowed_results:
            raise ValueError(f"max_results must be between {min_results} and {max_allowed_results}")

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

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

    def _build_search_action_result(
        self, search_results: list[TavilySearchResult], query: str = ""
    ) -> WebSearchActionResult:
        """Builds the ActionResult from the search results."""
        # Convert to result items
        result_items = [
            WebSearchResultItem(title=result.title, url=result.url)
            for result in search_results
        ]

        # Create document data with all results
        document_data = WebSearchDocumentData(
            query=query, results=result_items, total_count=len(result_items)
        )

        # Create single document
        document = WebSearchActionDocument(
            documentName=f"web_search_results_{get_utc_timestamp()}.json",
            documentData=document_data,
            mimeType="application/json",
        )

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

    async def _crawl(self, urls: list) -> list[TavilyCrawlResult]:
        """Calls the Tavily API to extract text content from URLs with retry logic."""
        import asyncio
        
        max_retries = get_web_crawl_max_retries()
        retry_delay = get_web_crawl_retry_delay()
        timeout = get_web_crawl_timeout()
        
        for attempt in range(max_retries + 1):
            try:
                # Use asyncio.wait_for for timeout
                response = await asyncio.wait_for(
                    self.client.extract(urls=urls, extract_depth="advanced", format="text"),
                    timeout=timeout
                )

                return [
                    TavilyCrawlResult(url=result["url"], content=result["raw_content"])
                    for result in response["results"]
                ]
                
            except asyncio.TimeoutError:
                logger.warning(f"Crawl attempt {attempt + 1} timed out after {timeout} seconds")
                if attempt < max_retries:
                    logger.info(f"Retrying in {retry_delay} seconds...")
                    await asyncio.sleep(retry_delay)
                else:
                    raise Exception(f"Crawl failed after {max_retries + 1} attempts due to timeout")
                    
            except Exception as e:
                logger.warning(f"Crawl attempt {attempt + 1} failed: {str(e)}")
                if attempt < max_retries:
                    logger.info(f"Retrying in {retry_delay} seconds...")
                    await asyncio.sleep(retry_delay)
                else:
                    raise Exception(f"Crawl failed after {max_retries + 1} attempts: {str(e)}")

    def _build_crawl_action_result(
        self, crawl_results: list[TavilyCrawlResult], urls: list[str] = None
    ) -> WebCrawlActionResult:
        """Builds the ActionResult from the crawl results."""
        # Convert to result items
        result_items = [
            WebCrawlResultItem(url=result.url, content=result.content)
            for result in crawl_results
        ]

        # Create document data with all results
        document_data = WebCrawlDocumentData(
            urls=urls or [result.url for result in crawl_results],
            results=result_items,
            total_count=len(result_items),
        )

        # Create single document
        document = WebCrawlActionDocument(
            documentName=f"web_crawl_results_{get_utc_timestamp()}.json",
            documentData=document_data,
            mimeType="application/json",
        )

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

    def _build_scrape_action_result(
        self, crawl_results: list[TavilyCrawlResult], query: str = ""
    ) -> WebScrapeActionResult:
        """Builds the ActionResult from the scrape results."""
        # Convert to result items
        result_items = [
            WebScrapeResultItem(url=result.url, content=result.content)
            for result in crawl_results
        ]

        # Create document data with all results
        document_data = WebScrapeDocumentData(
            query=query,
            results=result_items,
            total_count=len(result_items),
        )

        # Create single document
        document = WebScrapeActionDocument(
            documentName=f"web_scrape_results_{get_utc_timestamp()}.json",
            documentData=document_data,
            mimeType="application/json",
        )

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