"""
Web search integration for fetching real-time gold market news.

This module provides functionality to search for recent gold market news
using various search APIs. Currently supports:
- DuckDuckGo search (free, no API key required)
- Extensible for Tavily, SerpAPI, or other providers
"""

import httpx
import json
from typing import List, Dict, Optional
from datetime import datetime, timedelta


class NewsSearchService:
    """Service for fetching recent gold market news from the web."""
    
    def __init__(self):
        self.timeout = 10.0
        
    async def search_gold_news(self, query: str = "gold price XAU/USD", max_results: int = 5) -> List[Dict]:
        """
        Search for recent gold market news.
        
        Args:
            query: Search query (default: "gold price XAU/USD")
            max_results: Maximum number of results to return
            
        Returns:
            List of news articles with title, snippet, url, and date
        """
        try:
            # Use DuckDuckGo Instant Answer API (free, no key required)
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(
                    "https://api.duckduckgo.com/",
                    params={
                        "q": query,
                        "format": "json",
                        "no_html": 1,
                        "skip_disambig": 1,
                    }
                )
                
                if response.status_code == 200:
                    data = response.json()
                    results = []
                    
                    # Extract related topics (news items)
                    related_topics = data.get("RelatedTopics", [])
                    for topic in related_topics[:max_results]:
                        if isinstance(topic, dict) and "Text" in topic:
                            results.append({
                                "title": topic.get("Text", "")[:100],
                                "snippet": topic.get("Text", ""),
                                "url": topic.get("FirstURL", ""),
                                "source": "DuckDuckGo",
                                "date": datetime.now().isoformat()
                            })
                    
                    return results
                    
        except Exception as e:
            print(f"News search error: {e}")
            
        # Return fallback generic news context
        return self._get_fallback_news()
    
    def _get_fallback_news(self) -> List[Dict]:
        """Return generic gold market context when search fails."""
        return [
            {
                "title": "Gold Market Overview",
                "snippet": "Gold prices influenced by USD strength, inflation expectations, and geopolitical events",
                "url": "",
                "source": "General Context",
                "date": datetime.now().isoformat()
            },
            {
                "title": "Key Gold Drivers",
                "snippet": "Federal Reserve policy, US Dollar Index (DXY), real yields, and global risk sentiment",
                "url": "",
                "source": "General Context",
                "date": datetime.now().isoformat()
            }
        ]
    
    async def get_news_summary(self, max_items: int = 3) -> str:
        """
        Get a formatted summary of recent gold news for AI prompts.
        
        Args:
            max_items: Maximum number of news items to include
            
        Returns:
            Formatted string with news headlines and snippets
        """
        news_items = await self.search_gold_news(max_results=max_items)
        
        if not news_items:
            return "📰 Recent News: No recent news available. Analysis based on technical factors only."
        
        summary = "📰 RECENT MARKET NEWS:\n"
        for i, item in enumerate(news_items, 1):
            summary += f"{i}. {item['title']}\n"
            if item['snippet'] and item['snippet'] != item['title']:
                summary += f"   {item['snippet'][:150]}...\n"
        
        return summary


# Global service instance
news_search_service = NewsSearchService()