"""
Modular Chart System for Crypto Trading Bot Dashboard

This package provides a flexible, strategy-driven chart system that supports:
- Technical indicator overlays (SMA, EMA, Bollinger Bands)
- Subplot management (RSI, MACD)
- Strategy-specific configurations
- Future bot signal integration

Main Components:
- ChartBuilder: Main orchestrator for chart creation
- Layer System: Modular rendering components
- Configuration System: Strategy-driven chart configs
"""

from .builder import ChartBuilder
from .utils import (
    validate_market_data,
    prepare_chart_data,
    get_indicator_colors
)

# Version information
__version__ = "0.1.0"
__package_name__ = "charts"

# Public API exports
__all__ = [
    "ChartBuilder",
    "validate_market_data",
    "prepare_chart_data", 
    "get_indicator_colors",
    "create_candlestick_chart",
    "create_strategy_chart",
    "get_supported_symbols", 
    "get_supported_timeframes",
    "get_market_statistics",
    "check_data_availability",
    "create_data_status_indicator",
    "create_error_chart"
]

def create_candlestick_chart(symbol: str, timeframe: str, days_back: int = 7, **kwargs):
    """
    Convenience function to create a basic candlestick chart.
    
    Args:
        symbol: Trading pair (e.g., 'BTC-USDT')
        timeframe: Timeframe (e.g., '1h', '1d')
        days_back: Number of days to look back
        **kwargs: Additional parameters for chart customization
        
    Returns:
        Plotly Figure object
    """
    builder = ChartBuilder()
    return builder.create_candlestick_chart(symbol, timeframe, days_back, **kwargs)

def create_strategy_chart(symbol: str, timeframe: str, strategy_name: str, **kwargs):
    """
    Convenience function to create a strategy-specific chart.
    
    Args:
        symbol: Trading pair
        timeframe: Timeframe  
        strategy_name: Name of the strategy configuration
        **kwargs: Additional parameters
        
    Returns:
        Plotly Figure object with strategy indicators
    """
    builder = ChartBuilder()
    return builder.create_strategy_chart(symbol, timeframe, strategy_name, **kwargs)

def get_supported_symbols():
    """Get list of symbols that have data in the database."""
    builder = ChartBuilder()
    candles = builder.fetch_market_data("BTC-USDT", "1m", days_back=1)  # Test query
    if candles:
        from database.operations import get_database_operations
        from utils.logger import get_logger
        logger = get_logger("charts_symbols")
        
        try:
            db = get_database_operations(logger)
            with db.market_data.get_session() as session:
                from sqlalchemy import text
                result = session.execute(text("SELECT DISTINCT symbol FROM market_data ORDER BY symbol"))
                return [row[0] for row in result]
        except Exception:
            pass
    
    return ['BTC-USDT', 'ETH-USDT']  # Fallback

def get_supported_timeframes():
    """Get list of timeframes that have data in the database.""" 
    builder = ChartBuilder()
    candles = builder.fetch_market_data("BTC-USDT", "1m", days_back=1)  # Test query
    if candles:
        from database.operations import get_database_operations
        from utils.logger import get_logger
        logger = get_logger("charts_timeframes")
        
        try:
            db = get_database_operations(logger)
            with db.market_data.get_session() as session:
                from sqlalchemy import text
                result = session.execute(text("SELECT DISTINCT timeframe FROM market_data ORDER BY timeframe"))
                return [row[0] for row in result]
        except Exception:
            pass
    
    return ['5s', '1m', '15m', '1h']  # Fallback

def get_market_statistics(symbol: str, timeframe: str = "1h"):
    """Calculate market statistics from recent data."""
    builder = ChartBuilder()
    candles = builder.fetch_market_data(symbol, timeframe, days_back=1)
    
    if not candles:
        return {'Price': 'N/A', '24h Change': 'N/A', '24h Volume': 'N/A', 'High 24h': 'N/A', 'Low 24h': 'N/A'}
    
    import pandas as pd
    df = pd.DataFrame(candles)
    latest = df.iloc[-1]
    current_price = float(latest['close'])
    
    # Calculate 24h change
    if len(df) > 1:
        price_24h_ago = float(df.iloc[0]['open'])
        change_percent = ((current_price - price_24h_ago) / price_24h_ago) * 100
    else:
        change_percent = 0
    
    from .utils import format_price, format_volume
    return {
        'Price': format_price(current_price, decimals=2),
        '24h Change': f"{'+' if change_percent >= 0 else ''}{change_percent:.2f}%",
        '24h Volume': format_volume(df['volume'].sum()),
        'High 24h': format_price(df['high'].max(), decimals=2),
        'Low 24h': format_price(df['low'].min(), decimals=2)
    }

def check_data_availability(symbol: str, timeframe: str):
    """Check data availability for a symbol and timeframe."""
    from datetime import datetime, timezone, timedelta
    from database.operations import get_database_operations
    from utils.logger import get_logger
    
    try:
        logger = get_logger("charts_data_check")
        db = get_database_operations(logger)
        latest_candle = db.market_data.get_latest_candle(symbol, timeframe)
        
        if latest_candle:
            latest_time = latest_candle['timestamp']
            time_diff = datetime.now(timezone.utc) - latest_time.replace(tzinfo=timezone.utc)
            
            return {
                'has_data': True,
                'latest_timestamp': latest_time,
                'time_since_last': time_diff,
                'is_recent': time_diff < timedelta(hours=1),
                'message': f"Latest data: {latest_time.strftime('%Y-%m-%d %H:%M:%S UTC')}"
            }
        else:
            return {
                'has_data': False,
                'latest_timestamp': None,
                'time_since_last': None,
                'is_recent': False,
                'message': f"No data available for {symbol} {timeframe}"
            }
    except Exception as e:
        return {
            'has_data': False,
            'latest_timestamp': None, 
            'time_since_last': None,
            'is_recent': False,
            'message': f"Error checking data: {str(e)}"
        }

def create_data_status_indicator(symbol: str, timeframe: str):
    """Create a data status indicator for the dashboard."""
    status = check_data_availability(symbol, timeframe)
    
    if status['has_data']:
        if status['is_recent']:
            icon, color, status_text = "🟢", "#27ae60", "Real-time Data"
        else:
            icon, color, status_text = "🟡", "#f39c12", "Delayed Data"
    else:
        icon, color, status_text = "🔴", "#e74c3c", "No Data"
    
    return f'<span style="color: {color}; font-weight: bold;">{icon} {status_text}</span><br><small>{status["message"]}</small>'

def create_error_chart(error_message: str):
    """Create an error chart with error message."""
    builder = ChartBuilder()
    return builder._create_error_chart(error_message)