//+------------------------------------------------------------------+
//| MyProEA.mq5 - Professional Expert Advisor                         |
//| Main EA file with clean lifecycle and separation of concerns      |
//+------------------------------------------------------------------+

#property copyright "Educational EA - BackTesting Only"
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
#property description "Professional modular EA with MA crossover strategy"
#property description "For educational and backtesting purposes only"

// Include all class definitions
#include "Include/Config.mqh"
#include "Include/Logger.mqh"
#include "Include/Utilities.mqh"
#include "Include/MarketData.mqh"
#include "Include/Signal.mqh"
#include "Include/Strategy.mqh"
#include "Include/RiskManager.mqh"
#include "Include/PositionManager.mqh"
#include "Include/TradeManager.mqh"
#include "Include/TrailingStop.mqh"

//+------------------------------------------------------------------+
// Global class instances
//+------------------------------------------------------------------+

CLogger *g_logger = NULL;
CMarketData *g_market_data = NULL;
CStrategy *g_strategy = NULL;
CRiskManager *g_risk_manager = NULL;
CPositionManager *g_position_manager = NULL;
CTradeManager *g_trade_manager = NULL;
CTrailingStop *g_trailing_stop = NULL;

// Diagnostics counters for blocked entries
long g_blocked_existing_position = 0;
long g_blocked_spread = 0;
long g_blocked_hours = 0;
long g_blocked_max_positions = 0;

//+------------------------------------------------------------------+
// EA Initialization
//+------------------------------------------------------------------+
int OnInit()
{
   // Create logger instance
   g_logger = new CLogger(g_debug_mode);
   g_logger.Info("===== EA INITIALIZATION START =====");

   // Create market data handler
   g_market_data = new CMarketData(_Symbol, g_logger);
   if(!g_market_data.IsTradingAllowed())
   {
      g_logger.Error("Trading not allowed for this symbol");
      delete g_market_data;
      g_market_data = NULL;
      delete g_logger;
      g_logger = NULL;
      return INIT_FAILED;
   }

   // Create strategy
   g_strategy = new CStrategy(g_market_data, g_logger);
   if(!g_strategy.Init())
   {
      g_logger.Error("Failed to initialize strategy");
      delete g_strategy;
      g_strategy = NULL;
      delete g_market_data;
      g_market_data = NULL;
      delete g_logger;
      g_logger = NULL;
      return INIT_FAILED;
   }

   // Create risk manager
   g_risk_manager = new CRiskManager(g_market_data, g_logger);

   // Create position manager
   g_position_manager = new CPositionManager(g_logger);

   // Create trade manager
   g_trade_manager = new CTradeManager(g_logger, g_risk_manager);

   // Create trailing stop manager
   g_trailing_stop = new CTrailingStop(g_market_data, g_logger, g_trade_manager);

   // Log configuration
   g_logger.Info(StringFormat("Magic Number: %d", g_magic_number));
   g_logger.Info(StringFormat("Symbol: %s", _Symbol));
   g_logger.Info(StringFormat("Chart Timeframe: %s", EnumToString(PERIOD_CURRENT)));
   g_logger.Info(StringFormat("Strategy Evaluation: %s on %s",
                              g_evaluate_every_tick ? "Every tick" : (g_evaluate_on_new_bar ? "New bar" : "Every tick"),
                              EnumToString(g_strategy_entry_timeframe)));
   g_logger.Info(StringFormat("Lot Mode: %s", 
                               g_lot_mode == LOT_MODE_FIXED ? "FIXED" : "RISK"));
   g_logger.Info("Initial SL/TP source: Strategy TradeSetup");
   g_logger.Info(StringFormat("Max Positions: %d, Max Spread: %d points", 
                               g_max_positions, g_max_spread_points));

   g_logger.Info("===== EA INITIALIZATION COMPLETE =====");
   return INIT_SUCCEEDED;
}

//+------------------------------------------------------------------+
// EA Deinitialization
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
   g_logger.Info("===== EA DEINITIALIZATION START =====");
   
   string reason_text = "";
   switch(reason)
   {
      case REASON_ACCOUNT: reason_text = "Account changed"; break;
      case REASON_CHARTCHANGE: reason_text = "Chart changed"; break;
      case REASON_CHARTCLOSE: reason_text = "Chart closed"; break;
      case REASON_PARAMETERS: reason_text = "Parameters changed"; break;
      case REASON_RECOMPILE: reason_text = "EA recompiled"; break;
      case REASON_REMOVE: reason_text = "EA removed"; break;
      default: reason_text = "Unknown reason"; break;
   }
   
   g_logger.Info(StringFormat("Deinit reason: %s (%d)", reason_text, reason));

   // Clean up strategy (release indicator handles)
   if(g_strategy != NULL)
   {
      delete g_strategy;
      g_strategy = NULL;
   }

   // Clean up all other objects
   if(g_trailing_stop != NULL)
   {
      delete g_trailing_stop;
      g_trailing_stop = NULL;
   }

   if(g_trade_manager != NULL)
   {
      delete g_trade_manager;
      g_trade_manager = NULL;
   }

   if(g_position_manager != NULL)
   {
      delete g_position_manager;
      g_position_manager = NULL;
   }

   if(g_risk_manager != NULL)
   {
      delete g_risk_manager;
      g_risk_manager = NULL;
   }

   if(g_market_data != NULL)
   {
      delete g_market_data;
      g_market_data = NULL;
   }

   if(g_logger != NULL)
   {
      g_logger.Info("===== EA DEINITIALIZATION COMPLETE =====");
      delete g_logger;
      g_logger = NULL;
   }
}

//+------------------------------------------------------------------+
// Main EA Logic - OnTick()
//+------------------------------------------------------------------+
void OnTick()
{
   // Step 1: Update market data (always)
   if(!g_market_data.IsTradingAllowed())
   {
      return;
   }

   // Step 2: Check spread - if spread is too wide, don't trade
   if(!g_risk_manager.IsSpreadAcceptable())
   {
      g_blocked_spread++;
      if(g_debug_mode)
         g_logger.Info(StringFormat("Blocked entry due to spread (count=%d)", g_blocked_spread));
      return;
   }

   // Step 3: Check trading hours
   if(!g_risk_manager.IsTradingHourValid())
   {
      g_blocked_hours++;
      if(g_debug_mode)
         g_logger.Info(StringFormat("Blocked entry due to trading hours (count=%d)", g_blocked_hours));
      return;
   }

   // Step 4: Manage existing positions (trailing stop, break-even)
   g_trailing_stop.UpdateAllPositions();

   // Step 5: Evaluate strategy on configured entry timeframe unless every-tick mode is enabled
   bool should_evaluate_strategy = true;
   if(!g_evaluate_every_tick && g_evaluate_on_new_bar)
      should_evaluate_strategy = g_market_data.IsNewBar(g_strategy_entry_timeframe);

   if(!should_evaluate_strategy)
   {
      return;
   }

   // Log diagnostics on each new entry bar
   if(g_strategy != NULL)
      g_strategy.LogDiagnostics();
   if(g_logger != NULL && g_debug_mode)
      g_logger.Info(StringFormat("Blocked totals: existing=%d spread=%d hours=%d maxpos=%d", g_blocked_existing_position, g_blocked_spread, g_blocked_hours, g_blocked_max_positions));

   // Step 6: Get the trade setup from strategy
   TradeSetup setup = g_strategy.GetTradeSetup();

   if(setup.signal == SIGNAL_NONE)
   {
      if(g_debug_mode && g_logger != NULL)
         g_logger.Info(StringFormat("No trade setup: %s", setup.reason));
      return;
   }

   // Step 7: Check if we already have a position
   if(g_position_manager.HasOpenPosition(_Symbol))
   {
      g_blocked_existing_position++;
      if(g_debug_mode)
         g_logger.Info(StringFormat("Already have open position, skipping entry (count=%d)", g_blocked_existing_position));
      return;
   }

   // Step 8: Check if new position is allowed
   if(!g_position_manager.IsNewPositionAllowed(_Symbol))
   {
      g_blocked_max_positions++;
      g_logger.Warning(StringFormat("New position not allowed (max positions reached) (count=%d)", g_blocked_max_positions));
      return;
   }

   double lot = 0.0;
   if(!g_risk_manager.ValidateTradeSetup(setup, lot))
   {
      if(g_logger)
         g_logger.Warning(StringFormat("Trade setup rejected: %s", setup.reason));
      return;
   }

   bool trade_success = false;

   if(setup.signal == SIGNAL_BUY)
   {
      trade_success = g_trade_manager.OpenBuyTrade(_Symbol, lot, setup.stopLoss, setup.takeProfit, setup.entryPrice);
   }
   else if(setup.signal == SIGNAL_SELL)
   {
      trade_success = g_trade_manager.OpenSellTrade(_Symbol, lot, setup.stopLoss, setup.takeProfit, setup.entryPrice);
   }

   if(trade_success)
   {
      if(g_logger)
         g_logger.Info("Trade executed successfully");
   }
   else
   {
      if(g_logger)
         g_logger.Error("Trade execution failed");
   }
}