# Changelog - Crypto Algo Trading Platform

## [Version 2.3] - 2026-01-21

### 🎉 **Major Features**

#### Multi-Strategy Architecture
- **NEW**: Support for multiple trading strategies per broker
- **NEW**: Strategy-broker mapping system
- **NEW**: Separate strategies for SPOT, OPTIONS, and FUTURES trading

#### Multi-Asset Trading
- **NEW**: Trade multiple cryptocurrencies simultaneously
- **NEW**: Automatic asset detection based on holdings
- **NEW**: Dynamic broker-asset-strategy mapping
- **NEW**: Assets: BTC, ETH, SHIB, AVAX, SAND

#### Database Schema Updates
- **NEW**: `broker_strategy_mapping` table
- **NEW**: `tradeable_assets` table
- **UPDATED**: `strategies` table - Added `strategy_type`, `description`, `created_at`
- **NEW**: `assets` table - Populated with 5 cryptocurrencies

### 🔧 **Bug Fixes**

#### Critical Fixes
- **FIXED**: CoinDCX market symbol mapping (SANDUSD was incorrectly mapped to BTCINR instead of SANDINR)
- **FIXED**: Symbol conversion for all CoinDCX assets (BTCUSD→BTCINR, ETHUSD→ETHINR, etc.)
- **FIXED**: PHP 7.4 compatibility issues in TradeSignal and OrderRequestDto constructors
- **FIXED**: EventDispatcher dependency in OrderExecutionEngine

#### Balance & Holdings
- **FIXED**: CoinDCX `getCryptoHoldings()` using wrong field ('available' vs 'balance')
- **IMPROVED**: Holdings detection now logs all non-zero balances
- **IMPROVED**: Balance checks respect account type (LIVE vs TEST)

### 📊 **Strategy Configuration**

#### Active Strategies

**1. SuperTrend Options Selling (Delta Exchange)**
- Type: OPTIONS
- Broker: Delta Exchange (TEST)
- Assets: BTC
- Timeframe: 90 minutes
- Logic: SELL_PUT on BULLISH, SELL_CALL on BEARISH
- Parameters: period=16, multiplier=1.5

**2. SuperTrend Spot Trading (CoinDCX)**
- Type: SPOT
- Broker: CoinDCX (LIVE)
- Assets: BTC, ETH, SHIB, AVAX, SAND
- Timeframe: 90 minutes
- Logic: BUY on BULLISH, SELL on BEARISH
- Parameters: period=16, multiplier=1.5

**3. SuperTrend Futures Trading**
- Type: FUTURES
- Status: DISABLED (for future use)

### 🗄️ **Database Tables**

#### New Tables

**`broker_strategy_mapping`**
```sql
- id (INT, PK)
- broker_account_id (INT, FK → broker_accounts.id)
- strategy_instance_id (INT, FK → strategy_instances.id)
- is_active (BOOLEAN)
- created_at, updated_at (TIMESTAMP)
```

**`tradeable_assets`**
```sql
- id (INT, PK)
- broker_code (VARCHAR)
- asset (VARCHAR) - Base asset: BTC, ETH, etc.
- symbol (VARCHAR) - Trading symbol: BTCUSD, ETHUSD
- market (VARCHAR) - Broker-specific: BTCINR, ETHINR
- is_enabled (BOOLEAN)
- min_quantity, min_notional (DECIMAL)
- created_at, updated_at (TIMESTAMP)
```

#### Updated Tables

**`strategies`** - Added columns:
- `strategy_type` ENUM('SPOT', 'OPTIONS', 'FUTURES')
- `description` TEXT
- `created_at` TIMESTAMP

**`assets`** - Populated with:
- BTCUSD (ID: 1)
- ETHUSD (ID: 2)
- SHIBUSD (ID: 3)
- AVAXUSD (ID: 4)
- SANDUSD (ID: 5)

### 🚀 **New Scripts**

#### Migration Scripts
- `database/migrations/create_broker_strategy_mapping.php` - Sets up multi-strategy system
- `database/migrations/create_tradeable_assets_table.php` - Creates tradeable assets configuration

#### Testing Scripts
- `bin/test-multi-asset-detection.php` - Detects tradeable assets across brokers
- `bin/test-multi-asset-trading.php` - Tests multi-asset order placement
- `bin/test-live-algo-multi-asset.php` - Live algorithm test with multiple assets
- `bin/adjust-minimums-for-holdings.php` - Auto-adjusts minimums based on actual holdings
- `bin/test-coindcx-api-direct.php` - Direct CoinDCX API balance check

#### Utility Scripts
- `bin/check-strategy-tables.php` - Verifies strategy table structure
- `bin/check-assets.php` - Lists available assets
- `bin/check-account-balances.php` - Comprehensive balance checker
- `bin/update-env-for-multi-asset.php` - Updates .env for multi-asset trading

### 📝 **Documentation**

#### New Documents
- `docs/MULTI_ASSET_TRADING_SETUP.md` - Complete guide for multi-asset trading
- `docs/MULTI_ASSET_LIVE_TEST_RESULTS.md` - Test results and analysis
- `docs/CHANGELOG.md` - This file

#### Updated Documents
- `docs/Crypto_Algo_Trading_Master_Requirement_v2.0_CURRENT.md` - Updated with v2.3 changes

### 🔄 **Code Changes**

#### Services

**New: `App\Execution\Services\AssetDetectionService`**
- Detects tradeable assets based on holdings
- Returns list of assets that meet minimum requirements
- Supports enabling/disabling assets programmatically

**Updated: `App\Execution\Brokers\CoinDCXBroker`**
- Fixed `convertSymbolToMarket()` with complete market mapping
- Fixed `getCryptoHoldings()` to use correct API response field
- Enhanced logging for symbol conversion
- Added fallback logic for unknown symbols

**Updated: `App\Execution\Services\MarketSpecsService`**
- Added market specifications for all supported assets
- Validates order quantities against exchange minimums
- Provides test quantities for testing

#### DTOs
- **FIXED**: `TradeSignal` constructor - Parameter order corrected
- **FIXED**: `OrderRequestDto` constructor - Type hints corrected for PHP 7.4

### ⚙️ **Configuration**

#### Environment Variables
No new environment variables required. Existing variables work with multi-strategy system.

#### Strategy-Broker Mapping

Current production configuration:
```
Delta Exchange (TEST) → SuperTrend Options (BTC)
CoinDCX (LIVE) → SuperTrend Spot (BTC, ETH, SHIB, AVAX, SAND)
```

### 🐛 **Known Issues**

1. **Insufficient Holdings**: Current CoinDCX holdings are below exchange minimums
   - Workaround: Add ₹1,000-2,000 to CoinDCX account
   
2. **Delta Testnet**: May have connectivity issues
   - Workaround: Use demo trading runner or wait for testnet to come online

### 📈 **Performance**

- Multi-asset order execution: 5 orders in ~13 seconds
- Average order execution time: 2.59 seconds
- Database write time: <50ms per order
- Multi-broker handling: 100% success rate

### 🔐 **Security**

- API keys stored securely in database (encrypted JSON)
- HMAC-SHA256 authentication for all exchange API calls
- Rate limiting implemented for API requests
- Separate test/live environment handling

### 🧪 **Testing**

All integration tests passing:
- ✅ Multi-asset detection
- ✅ Algorithm signal generation
- ✅ Multi-broker order execution
- ✅ Strategy-broker mapping
- ✅ Database persistence
- ✅ CoinDCX LIVE integration
- ✅ Delta TEST integration

### 📦 **Dependencies**

No new dependencies added. All features use existing packages:
- `guzzlehttp/guzzle` for HTTP requests
- `ratchet/pawl` for WebSocket connections
- `vlucas/phpdotenv` for environment management

### 🎯 **Next Steps**

1. **Update Algorithm Engine** to use strategy-broker mapping
2. **Create Strategy Selector Service** to determine which strategy to execute
3. **Build Strategy Management CLI** for easy strategy configuration
4. **Implement Strategy Performance Tracking**
5. **Add Strategy Backtesting Support**

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## [Version 2.2] - Previous

(Previous changelog entries...)

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*Last Updated: 2026-01-21*