#!/usr/bin/env python3
"""
Frontend Compatibility Router
Provides missing endpoints expected by frontend with paths that match frontend requests
"""

import logging
import json
import time
from pathlib import Path
from fastapi import APIRouter, HTTPException, Query
from fastapi.responses import JSONResponse
from typing import Optional, List, Dict, Any
from datetime import datetime, timezone

logger = logging.getLogger(__name__)

router = APIRouter(tags=["Frontend Compatibility"])


def _get_debug_log_path():
    """Get debug log path"""
    workspace_root = Path("/app" if Path("/app").exists() else (Path("/workspace") if Path("/workspace").exists() else Path("."))).resolve()
    debug_log_dir = workspace_root / ".cursor"
    debug_log_dir.mkdir(parents=True, exist_ok=True)
    return debug_log_dir / "debug.log"


def create_response(data: Any, source: str) -> Dict[str, Any]:
    """Create standardized response"""
    return {
        "data": data,
        "meta": {
            "source": source,
            "generated_at": datetime.now(timezone.utc).isoformat(),
            "cache_ttl": 60
        }
    }


# ============================================================================
# SENTIMENT ENDPOINTS
# ============================================================================

@router.get("/sentiment/fear-greed")
async def get_fear_greed_index():
    """
    Get Fear & Greed Index - frontend compatible path
    Maps to collector data
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:50", "message": "GET /sentiment/fear-greed called", "data": {}}) + "\n")
    except: pass
    # #endregion
    
    try:
        # Try to get from collectors endpoint
        from collectors.sentiment.fear_greed import FearGreedCollector
        collector = FearGreedCollector()
        result = await collector.collect()
        
        if result and result.get("status") == "success":
            fear_greed_data = result.get("data", {})
            # #region agent log
            try:
                with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
                    f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "F", "location": "frontend_compat_router.py:65", "message": "Fear & Greed collector success", "data": {"fear_greed_value": fear_greed_data.get("value")}}) + "\n")
            except: pass
            # #endregion
            return create_response(fear_greed_data, "fear_greed_collector")
    except Exception as e:
        logger.warning(f"Fear & Greed collector failed: {e}")
        # #region agent log
        try:
            with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
                f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "F", "location": "frontend_compat_router.py:74", "message": "Fear & Greed collector failed", "data": {"error": str(e)}}) + "\n")
        except: pass
        # #endregion
    
    # Fallback - return sample data
    return create_response({
        "value": 50,
        "classification": "Neutral",
        "timestamp": datetime.now(timezone.utc).isoformat(),
        "status": "degraded",
        "message": "Using fallback data - collector unavailable"
    }, "fallback")


@router.get("/sentiment/global")
async def get_global_sentiment():
    """
    Get global sentiment aggregated from multiple sources
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:95", "message": "GET /sentiment/global called", "data": {}}) + "\n")
    except: pass
    # #endregion
    
    try:
        # Try to get fear & greed as primary sentiment indicator
        from collectors.sentiment.fear_greed import FearGreedCollector
        collector = FearGreedCollector()
        result = await collector.collect()
        
        if result and result.get("status") == "success":
            fear_greed_data = result.get("data", {})
            
            return create_response({
                "sentiment": fear_greed_data.get("classification", "Neutral"),
                "fear_greed_index": fear_greed_data.get("value", 50),
                "confidence": 0.85,
                "sources": ["fear_greed"],
                "timestamp": datetime.now(timezone.utc).isoformat()
            }, "fear_greed_collector")
    except Exception as e:
        logger.warning(f"Global sentiment collection failed: {e}")
    
    # Fallback
    return create_response({
        "sentiment": "Neutral",
        "fear_greed_index": 50,
        "confidence": 0.5,
        "sources": [],
        "timestamp": datetime.now(timezone.utc).isoformat(),
        "status": "degraded"
    }, "fallback")


# ============================================================================
# MARKET ENDPOINTS
# ============================================================================

@router.get("/market/prices")
async def get_market_prices(
    limit: int = Query(10, description="Number of coins"),
    symbols: Optional[str] = Query(None, description="Comma-separated symbols (BTC,ETH)")
):
    """
    Get cryptocurrency prices - frontend compatible path
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:145", "message": "GET /market/prices called", "data": {"limit": limit, "symbols": symbols}}) + "\n")
    except: pass
    # #endregion
    
    try:
        # Try to get from CoinGecko collector
        from collectors.market.coingecko import CoinGeckoCollector
        collector = CoinGeckoCollector()
        result = await collector.collect()
        
        if result and result.get("status") == "success":
            prices = result.get("data", {}).get("coins", [])
            
            # Filter by symbols if provided
            if symbols:
                symbol_list = [s.strip().upper() for s in symbols.split(",")]
                prices = [p for p in prices if p.get("symbol", "").upper() in symbol_list]
            
            # Limit results
            prices = prices[:limit]
            
            # #region agent log
            try:
                with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
                    f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "F", "location": "frontend_compat_router.py:169", "message": "CoinGecko collector success", "data": {"count": len(prices)}}) + "\n")
            except: pass
            # #endregion
            
            return create_response(prices, "coingecko_collector")
    except Exception as e:
        logger.warning(f"CoinGecko collector failed: {e}")
        # #region agent log
        try:
            with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
                f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "F", "location": "frontend_compat_router.py:179", "message": "CoinGecko collector failed", "data": {"error": str(e)}}) + "\n")
        except: pass
        # #endregion
    
    # Fallback - return sample data
    sample_prices = [
        {"symbol": "BTC", "price": 50000.0, "change_24h": 2.5, "market_cap": 980000000000},
        {"symbol": "ETH", "price": 3000.0, "change_24h": 1.8, "market_cap": 360000000000},
    ]
    return create_response(sample_prices[:limit], "fallback")


@router.get("/market/top")
async def get_top_coins(
    limit: int = Query(10, description="Number of top coins")
):
    """
    Get top cryptocurrencies by market cap - frontend compatible path
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:202", "message": "GET /market/top called", "data": {"limit": limit}}) + "\n")
    except: pass
    # #endregion
    
    try:
        # Try to get from CoinGecko collector
        from collectors.market.coingecko import CoinGeckoCollector
        collector = CoinGeckoCollector()
        result = await collector.collect()
        
        if result and result.get("status") == "success":
            coins = result.get("data", {}).get("coins", [])
            # Sort by market cap
            sorted_coins = sorted(coins, key=lambda x: x.get("market_cap", 0), reverse=True)
            return create_response(sorted_coins[:limit], "coingecko_collector")
    except Exception as e:
        logger.warning(f"CoinGecko collector failed: {e}")
    
    # Fallback
    sample_top = [
        {"symbol": "BTC", "name": "Bitcoin", "rank": 1, "market_cap": 980000000000},
        {"symbol": "ETH", "name": "Ethereum", "rank": 2, "market_cap": 360000000000},
    ]
    return create_response(sample_top[:limit], "fallback")


# ============================================================================
# NEWS ENDPOINTS
# ============================================================================

@router.get("/news/latest")
async def get_latest_news(
    limit: int = Query(10, description="Number of articles"),
    symbol: Optional[str] = Query(None, description="Filter by symbol")
):
    """
    Get latest crypto news - frontend compatible path
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:243", "message": "GET /news/latest called", "data": {"limit": limit, "symbol": symbol}}) + "\n")
    except: pass
    # #endregion
    
    # Forward to main news endpoint
    try:
        from backend.routers.news_router import get_latest_news as news_handler
        return await news_handler(symbol=symbol or "BTC", limit=limit)
    except Exception as e:
        logger.warning(f"News router call failed: {e}")
        # Return graceful fallback
        return create_response([], "unavailable")


# ============================================================================
# WHALE TRACKING ENDPOINTS
# ============================================================================

@router.get("/whales")
async def get_whale_transactions(
    limit: int = Query(50, description="Number of transactions"),
    chain: Optional[str] = Query(None, description="Blockchain filter"),
    min_amount_usd: Optional[float] = Query(100000, description="Minimum amount USD")
):
    """
    Get whale transactions - frontend compatible path
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:274", "message": "GET /whales called", "data": {"limit": limit, "chain": chain}}) + "\n")
    except: pass
    # #endregion
    
    # Forward to main whales endpoint
    try:
        from backend.routers.whales_router import get_whale_transactions as whales_handler
        return await whales_handler(limit=limit, chain=chain, min_amount_usd=min_amount_usd)
    except Exception as e:
        logger.warning(f"Whales router call failed: {e}")
        # Return graceful fallback
        return create_response([], "unavailable")


# ============================================================================
# SYSTEM ENDPOINTS
# ============================================================================

@router.get("/system/status")
async def get_system_status():
    """
    Get system status - frontend compatible path
    """
    # #region agent log
    try:
        with open(_get_debug_log_path(), "a", encoding="utf-8") as f:
            f.write(json.dumps({"timestamp": int(time.time() * 1000), "sessionId": "debug-session", "runId": "run1", "hypothesisId": "D", "location": "frontend_compat_router.py:300", "message": "GET /system/status called", "data": {}}) + "\n")
    except: pass
    # #endregion
    
    # Forward to main status endpoint
    try:
        from backend.routers.system_router import get_status
        return await get_status()
    except Exception as e:
        logger.warning(f"System router call failed: {e}")
        # Return graceful fallback
        return {
            "status": "degraded",
            "service": "Crypto Intelligence Hub",
            "timestamp": datetime.now(timezone.utc).isoformat(),
            "error": str(e)
        }