# API Reference

This document provides a comprehensive API reference for the IncrementalTrader framework.

## Module Structure

```
IncrementalTrader/
├── strategies/          # Trading strategies and base classes
│   ├── base.py         # Base strategy framework
│   ├── metatrend.py    # MetaTrend strategy
│   ├── bbrs.py         # BBRS strategy
│   ├── random.py       # Random strategy
│   └── indicators/     # Technical indicators
├── trader/             # Trade execution
│   ├── trader.py       # Main trader implementation
│   └── position.py     # Position management
├── backtester/         # Backtesting framework
│   ├── backtester.py   # Main backtesting engine
│   ├── config.py       # Configuration classes
│   └── utils.py        # Utilities and helpers
└── utils/              # General utilities
```

## Core Classes

### IncStrategySignal

Signal class for strategy outputs.

```python
class IncStrategySignal:
    def __init__(self, signal_type: str, confidence: float = 1.0, metadata: dict = None)
```

**Parameters:**
- `signal_type` (str): Signal type ('BUY', 'SELL', 'HOLD')
- `confidence` (float): Signal confidence (0.0 to 1.0)
- `metadata` (dict): Additional signal information

**Factory Methods:**
```python
@classmethod
def BUY(cls, confidence: float = 1.0, metadata: dict = None) -> 'IncStrategySignal'

@classmethod
def SELL(cls, confidence: float = 1.0, metadata: dict = None) -> 'IncStrategySignal'

@classmethod
def HOLD(cls, metadata: dict = None) -> 'IncStrategySignal'
```

**Properties:**
- `signal_type` (str): The signal type
- `confidence` (float): Signal confidence level
- `metadata` (dict): Additional metadata
- `timestamp` (int): Signal generation timestamp

**Example:**
```python
# Create signals using factory methods
buy_signal = IncStrategySignal.BUY(confidence=0.8, metadata={'reason': 'golden_cross'})
sell_signal = IncStrategySignal.SELL(confidence=0.9)
hold_signal = IncStrategySignal.HOLD()
```

### TimeframeAggregator

Aggregates data points to different timeframes.

```python
class TimeframeAggregator:
    def __init__(self, timeframe: str)
```

**Parameters:**
- `timeframe` (str): Target timeframe ('1min', '5min', '15min', '30min', '1h', '4h', '1d')

**Methods:**
```python
def add_data_point(self, timestamp: int, ohlcv: tuple) -> tuple | None
    """Add data point and return aggregated OHLCV if timeframe complete."""

def get_current_aggregated(self) -> tuple | None
    """Get current aggregated data without completing timeframe."""

def reset(self) -> None
    """Reset aggregator state."""
```

**Example:**
```python
aggregator = TimeframeAggregator("15min")

for timestamp, ohlcv in data_stream:
    aggregated = aggregator.add_data_point(timestamp, ohlcv)
    if aggregated:
        timestamp_agg, ohlcv_agg = aggregated
        # Process aggregated data
```

### IncStrategyBase

Base class for all trading strategies.

```python
class IncStrategyBase:
    def __init__(self, name: str, params: dict = None)
```

**Parameters:**
- `name` (str): Strategy name
- `params` (dict): Strategy parameters

**Abstract Methods:**
```python
def _process_aggregated_data(self, timestamp: int, ohlcv: tuple) -> IncStrategySignal
    """Process aggregated data and return signal. Must be implemented by subclasses."""
```

**Public Methods:**
```python
def process_data_point(self, timestamp: int, ohlcv: tuple) -> IncStrategySignal
    """Process raw data point and return signal."""

def get_current_signal(self) -> IncStrategySignal
    """Get the most recent signal."""

def get_performance_metrics(self) -> dict
    """Get strategy performance metrics."""

def reset(self) -> None
    """Reset strategy state."""
```

**Properties:**
- `name` (str): Strategy name
- `params` (dict): Strategy parameters
- `logger` (Logger): Strategy logger
- `signal_history` (list): History of generated signals

**Example:**
```python
class MyStrategy(IncStrategyBase):
    def __init__(self, name: str, params: dict = None):
        super().__init__(name, params)
        self.sma = MovingAverageState(period=20)
    
    def _process_aggregated_data(self, timestamp: int, ohlcv: tuple) -> IncStrategySignal:
        _, _, _, close, _ = ohlcv
        self.sma.update(close)
        
        if self.sma.is_ready():
            return IncStrategySignal.BUY() if close > self.sma.get_value() else IncStrategySignal.SELL()
        return IncStrategySignal.HOLD()
```

## Strategy Classes

### MetaTrendStrategy

Multi-Supertrend trend-following strategy.

```python
class MetaTrendStrategy(IncStrategyBase):
    def __init__(self, name: str, params: dict = None)
```

**Default Parameters:**
```python
{
    "timeframe": "15min",
    "supertrend_periods": [10, 20, 30],
    "supertrend_multipliers": [2.0, 3.0, 4.0],
    "min_trend_agreement": 0.6
}
```

**Methods:**
- Inherits all methods from `IncStrategyBase`
- Uses `SupertrendCollection` for meta-trend analysis

**Example:**
```python
strategy = MetaTrendStrategy("metatrend", {
    "timeframe": "15min",
    "supertrend_periods": [10, 20, 30],
    "min_trend_agreement": 0.7
})
```

### BBRSStrategy

Bollinger Bands + RSI strategy with market regime detection.

```python
class BBRSStrategy(IncStrategyBase):
    def __init__(self, name: str, params: dict = None)
```

**Default Parameters:**
```python
{
    "timeframe": "15min",
    "bb_period": 20,
    "bb_std": 2.0,
    "rsi_period": 14,
    "rsi_overbought": 70,
    "rsi_oversold": 30,
    "volume_ma_period": 20,
    "volume_spike_threshold": 1.5
}
```

**Methods:**
- Inherits all methods from `IncStrategyBase`
- Implements market regime detection
- Uses volume analysis for signal confirmation

**Example:**
```python
strategy = BBRSStrategy("bbrs", {
    "timeframe": "15min",
    "bb_period": 20,
    "rsi_period": 14
})
```

### RandomStrategy

Random signal generation for testing.

```python
class RandomStrategy(IncStrategyBase):
    def __init__(self, name: str, params: dict = None)
```

**Default Parameters:**
```python
{
    "timeframe": "15min",
    "buy_probability": 0.1,
    "sell_probability": 0.1,
    "seed": None
}
```

**Example:**
```python
strategy = RandomStrategy("random", {
    "buy_probability": 0.05,
    "sell_probability": 0.05,
    "seed": 42
})
```

## Indicator Classes

### Base Indicator Classes

#### IndicatorState

```python
class IndicatorState:
    def __init__(self, period: int)
    
    def update(self, value: float) -> None
    def get_value(self) -> float
    def is_ready(self) -> bool
    def reset(self) -> None
```

#### SimpleIndicatorState

```python
class SimpleIndicatorState(IndicatorState):
    def __init__(self)
```

#### OHLCIndicatorState

```python
class OHLCIndicatorState(IndicatorState):
    def __init__(self, period: int)
    
    def update_ohlc(self, high: float, low: float, close: float) -> None
```

### Moving Average Indicators

#### MovingAverageState

```python
class MovingAverageState(IndicatorState):
    def __init__(self, period: int)
    
    def update(self, value: float) -> None
    def get_value(self) -> float
    def is_ready(self) -> bool
```

#### ExponentialMovingAverageState

```python
class ExponentialMovingAverageState(IndicatorState):
    def __init__(self, period: int, alpha: float = None)
    
    def update(self, value: float) -> None
    def get_value(self) -> float
    def is_ready(self) -> bool
```

### Volatility Indicators

#### ATRState

```python
class ATRState(OHLCIndicatorState):
    def __init__(self, period: int)
    
    def update_ohlc(self, high: float, low: float, close: float) -> None
    def get_value(self) -> float
    def get_true_range(self) -> float
    def is_ready(self) -> bool
```

#### SimpleATRState

```python
class SimpleATRState(IndicatorState):
    def __init__(self, period: int)
    
    def update_range(self, high: float, low: float) -> None
    def get_value(self) -> float
    def is_ready(self) -> bool
```

### Trend Indicators

#### SupertrendState

```python
class SupertrendState(OHLCIndicatorState):
    def __init__(self, period: int, multiplier: float)
    
    def update_ohlc(self, high: float, low: float, close: float) -> None
    def get_value(self) -> float
    def get_signal(self) -> str
    def is_uptrend(self) -> bool
    def get_upper_band(self) -> float
    def get_lower_band(self) -> float
    def is_ready(self) -> bool
```

#### SupertrendCollection

```python
class SupertrendCollection:
    def __init__(self, periods: list, multipliers: list)
    
    def update_ohlc(self, high: float, low: float, close: float) -> None
    def get_signals(self) -> list
    def get_meta_signal(self, min_agreement: float = 0.6) -> str
    def get_agreement_ratio(self) -> float
    def is_ready(self) -> bool
```

### Oscillator Indicators

#### RSIState

```python
class RSIState(IndicatorState):
    def __init__(self, period: int)
    
    def update(self, price: float) -> None
    def get_value(self) -> float
    def is_overbought(self, threshold: float = 70) -> bool
    def is_oversold(self, threshold: float = 30) -> bool
    def is_ready(self) -> bool
```

#### SimpleRSIState

```python
class SimpleRSIState(IndicatorState):
    def __init__(self, period: int)
    
    def update(self, price: float) -> None
    def get_value(self) -> float
    def is_ready(self) -> bool
```

### Bollinger Bands

#### BollingerBandsState

```python
class BollingerBandsState(IndicatorState):
    def __init__(self, period: int, std_dev: float = 2.0)
    
    def update(self, price: float) -> None
    def get_bands(self) -> tuple  # (upper, middle, lower)
    def get_upper_band(self) -> float
    def get_middle_band(self) -> float
    def get_lower_band(self) -> float
    def get_bandwidth(self) -> float
    def get_percent_b(self, price: float) -> float
    def is_squeeze(self, threshold: float = 0.1) -> bool
    def is_ready(self) -> bool
```

#### BollingerBandsOHLCState

```python
class BollingerBandsOHLCState(OHLCIndicatorState):
    def __init__(self, period: int, std_dev: float = 2.0)
    
    def update_ohlc(self, high: float, low: float, close: float) -> None
    def get_bands(self) -> tuple  # (upper, middle, lower)
    # ... same methods as BollingerBandsState
```

## Trading Classes

### IncTrader

Main trader class for executing strategies.

```python
class IncTrader:
    def __init__(self, strategy: IncStrategyBase, initial_usd: float = 10000, 
                 stop_loss_pct: float = None, take_profit_pct: float = None,
                 fee_pct: float = 0.001, slippage_pct: float = 0.0005)
```

**Parameters:**
- `strategy` (IncStrategyBase): Trading strategy instance
- `initial_usd` (float): Starting capital
- `stop_loss_pct` (float): Stop loss percentage
- `take_profit_pct` (float): Take profit percentage
- `fee_pct` (float): Trading fee percentage
- `slippage_pct` (float): Slippage percentage

**Methods:**
```python
def process_data_point(self, timestamp: int, ohlcv: tuple) -> None
    """Process new data point and execute trades."""

def get_results(self) -> dict
    """Get comprehensive trading results."""

def get_portfolio_value(self, current_price: float) -> float
    """Get current portfolio value."""

def get_position_info(self) -> dict
    """Get current position information."""

def reset(self) -> None
    """Reset trader state."""
```

**Example:**
```python
trader = IncTrader(
    strategy=MetaTrendStrategy("metatrend"),
    initial_usd=10000,
    stop_loss_pct=0.03,
    take_profit_pct=0.06
)

for timestamp, ohlcv in data_stream:
    trader.process_data_point(timestamp, ohlcv)

results = trader.get_results()
```

### PositionManager

Manages trading positions and portfolio state.

```python
class PositionManager:
    def __init__(self, initial_usd: float)
```

**Methods:**
```python
def execute_buy(self, price: float, timestamp: int, fee_pct: float = 0.001, 
                slippage_pct: float = 0.0005) -> TradeRecord | None

def execute_sell(self, price: float, timestamp: int, fee_pct: float = 0.001, 
                 slippage_pct: float = 0.0005) -> TradeRecord | None

def get_portfolio_value(self, current_price: float) -> float

def get_position_info(self) -> dict

def reset(self) -> None
```

**Properties:**
- `usd_balance` (float): Current USD balance
- `coin_balance` (float): Current coin balance
- `position_type` (str): Current position ('LONG', 'SHORT', 'NONE')
- `entry_price` (float): Position entry price
- `entry_timestamp` (int): Position entry timestamp

### TradeRecord

Record of individual trades.

```python
class TradeRecord:
    def __init__(self, side: str, price: float, quantity: float, timestamp: int,
                 fee: float = 0.0, slippage: float = 0.0, pnl: float = 0.0)
```

**Properties:**
- `side` (str): Trade side ('BUY', 'SELL')
- `price` (float): Execution price
- `quantity` (float): Trade quantity
- `timestamp` (int): Execution timestamp
- `fee` (float): Trading fee paid
- `slippage` (float): Slippage cost
- `pnl` (float): Profit/loss for the trade

## Backtesting Classes

### IncBacktester

Main backtesting engine.

```python
class IncBacktester:
    def __init__(self)
```

**Methods:**
```python
def run_single_strategy(self, strategy_class: type, strategy_params: dict,
                       config: BacktestConfig, data_file: str) -> dict
    """Run backtest for single strategy."""

def optimize_strategy(self, strategy_class: type, optimization_config: OptimizationConfig,
                     data_file: str) -> dict
    """Optimize strategy parameters."""
```

**Example:**
```python
backtester = IncBacktester()

results = backtester.run_single_strategy(
    strategy_class=MetaTrendStrategy,
    strategy_params={"timeframe": "15min"},
    config=BacktestConfig(initial_usd=10000),
    data_file="data.csv"
)
```

### BacktestConfig

Configuration for backtesting.

```python
class BacktestConfig:
    def __init__(self, initial_usd: float = 10000, stop_loss_pct: float = None,
                 take_profit_pct: float = None, start_date: str = None,
                 end_date: str = None, fee_pct: float = 0.001,
                 slippage_pct: float = 0.0005, output_dir: str = "backtest_results",
                 save_trades: bool = True, save_portfolio_history: bool = True,
                 risk_free_rate: float = 0.02)
```

**Properties:**
- `initial_usd` (float): Starting capital
- `stop_loss_pct` (float): Stop loss percentage
- `take_profit_pct` (float): Take profit percentage
- `start_date` (str): Start date (YYYY-MM-DD)
- `end_date` (str): End date (YYYY-MM-DD)
- `fee_pct` (float): Trading fee percentage
- `slippage_pct` (float): Slippage percentage
- `output_dir` (str): Output directory
- `save_trades` (bool): Save trade records
- `save_portfolio_history` (bool): Save portfolio history
- `risk_free_rate` (float): Risk-free rate for Sharpe ratio

### OptimizationConfig

Configuration for parameter optimization.

```python
class OptimizationConfig:
    def __init__(self, base_config: BacktestConfig, param_ranges: dict,
                 max_workers: int = None, optimization_metric: str | callable = "sharpe_ratio",
                 save_all_results: bool = False)
```

**Properties:**
- `base_config` (BacktestConfig): Base configuration
- `param_ranges` (dict): Parameter ranges to test
- `max_workers` (int): Number of parallel workers
- `optimization_metric` (str | callable): Metric to optimize
- `save_all_results` (bool): Save all parameter combinations

## Utility Classes

### DataLoader

Loads and validates trading data.

```python
class DataLoader:
    @staticmethod
    def load_data(file_path: str, start_date: str = None, end_date: str = None) -> pd.DataFrame
        """Load and validate OHLCV data from CSV file."""

    @staticmethod
    def validate_data(data: pd.DataFrame) -> bool
        """Validate data format and consistency."""
```

### SystemUtils

System resource management utilities.

```python
class SystemUtils:
    @staticmethod
    def get_optimal_workers() -> int
        """Get optimal number of worker processes."""

    @staticmethod
    def get_memory_usage() -> dict
        """Get current memory usage statistics."""
```

### ResultsSaver

Save backtesting results to files.

```python
class ResultsSaver:
    @staticmethod
    def save_results(results: dict, output_dir: str) -> None
        """Save complete results to directory."""

    @staticmethod
    def save_performance_metrics(metrics: dict, file_path: str) -> None
        """Save performance metrics to JSON file."""

    @staticmethod
    def save_trades(trades: list, file_path: str) -> None
        """Save trade records to CSV file."""

    @staticmethod
    def save_portfolio_history(history: list, file_path: str) -> None
        """Save portfolio history to CSV file."""
```

### MarketFees

Trading fee calculation utilities.

```python
class MarketFees:
    @staticmethod
    def calculate_fee(trade_value: float, fee_pct: float) -> float
        """Calculate trading fee."""

    @staticmethod
    def calculate_slippage(trade_value: float, slippage_pct: float) -> float
        """Calculate slippage cost."""

    @staticmethod
    def get_binance_fees() -> dict
        """Get Binance fee structure."""

    @staticmethod
    def get_coinbase_fees() -> dict
        """Get Coinbase fee structure."""
```

## Performance Metrics

The framework calculates comprehensive performance metrics:

```python
performance_metrics = {
    # Return metrics
    'total_return_pct': float,          # Total portfolio return percentage
    'annualized_return_pct': float,     # Annualized return percentage
    'final_portfolio_value': float,     # Final portfolio value
    
    # Risk metrics
    'volatility_pct': float,            # Annualized volatility
    'max_drawdown_pct': float,          # Maximum drawdown percentage
    'sharpe_ratio': float,              # Sharpe ratio
    'sortino_ratio': float,             # Sortino ratio
    'calmar_ratio': float,              # Calmar ratio
    
    # Trading metrics
    'total_trades': int,                # Total number of trades
    'win_rate': float,                  # Percentage of winning trades
    'profit_factor': float,             # Gross profit / gross loss
    'avg_trade_pct': float,             # Average trade return percentage
    'avg_win_pct': float,               # Average winning trade percentage
    'avg_loss_pct': float,              # Average losing trade percentage
    
    # Time metrics
    'total_days': int,                  # Total trading days
    'trades_per_day': float,            # Average trades per day
    
    # Additional metrics
    'var_95': float,                    # Value at Risk (95%)
    'es_95': float,                     # Expected Shortfall (95%)
    'beta': float,                      # Beta vs benchmark
    'alpha': float                      # Alpha vs benchmark
}
```

## Error Handling

The framework uses custom exceptions for better error handling:

```python
class IncrementalTraderError(Exception):
    """Base exception for IncrementalTrader."""

class StrategyError(IncrementalTraderError):
    """Strategy-related errors."""

class IndicatorError(IncrementalTraderError):
    """Indicator-related errors."""

class BacktestError(IncrementalTraderError):
    """Backtesting-related errors."""

class DataError(IncrementalTraderError):
    """Data-related errors."""
```

## Logging

The framework provides comprehensive logging:

```python
import logging

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)

# Strategy logging
strategy = MetaTrendStrategy("metatrend")
strategy.logger.info("Strategy initialized")

# Trader logging
trader = IncTrader(strategy)
trader.logger.info("Trader initialized")
```

## Type Hints

The framework uses comprehensive type hints:

```python
from typing import Dict, List, Tuple, Optional, Union, Callable
from abc import ABC, abstractmethod

# Example type hints used throughout the framework
def process_data_point(self, timestamp: int, ohlcv: Tuple[float, float, float, float, float]) -> IncStrategySignal:
    pass

def get_results(self) -> Dict[str, Union[float, int, List, Dict]]:
    pass
```

This API reference provides comprehensive documentation for all public classes, methods, and functions in the IncrementalTrader framework. For detailed usage examples, see the other documentation files.