//#include<Generic/Queue.mqh>

extern MqlRates rates[];


input group "Orderflow configurations"
input ENUM_TIMEFRAMES inpOrderflowtf=PERIOD_CURRENT;

class COrderflow /*:public CCore*/{
   protected:
      int orderflowCurrent; //latest orderflow flag -1 for BEARISH, 1 for BULLISH
      double latestBullishRoot, latestBearishRoot;
      enum CISDOrderblocks{BEARISHORDERBLOCK=-1, ORDERBLOCKNONE=0, BULLISHORDERBLOCK=1};
      //CQueue<CISDOrderblocks> orderblocks;
      //array
      //latest cisd
      bool isCISD;
      
   public:
   //getters
   int getOrderflow(){return orderflowCurrent;};
   bool whatWasOrderflow(int index, int &orderflowFlag, double &bearishRoot, double &bullishRoot); //asking for orderflow from the history
   bool whenWasCISD(int &index, int &flag, int bias=0); //asking when was the last CISD
   bool isCISDBySwings(int &flag);
   bool isGap();
   bool wasGap(double &range, double &lowerBand, double &upperBand);
   bool initialize();
   void update();




};

bool COrderflow::initialize(void){

    if(latestBearishRoot!=0 && latestBullishRoot!=0){ //already initialized
       Print("roots already loaded!");
       return true;
    }

    int bullishRootIdx=0, bearishRootIdx=0;

    for(int i=1; i<Bars(_Symbol,PERIOD_CURRENT)-1; i++){
       bool currBullish = rates[i].close > rates[i].open;
       bool currBearish = rates[i].close < rates[i].open;
       bool prevBullish = rates[i+1].close > rates[i+1].open;
       bool prevBearish = rates[i+1].close < rates[i+1].open;

       // Bullish candle after bearish → start of bullish move → bullish root
       if(currBullish && prevBearish && latestBullishRoot==0){
          rates[i].open < rates[i+1].close ? latestBullishRoot=rates[i].open : latestBullishRoot=rates[i+1].close; //avoiding the gap trap
          bullishRootIdx=i;
       }

       // Bearish candle after bullish → start of bearish move → bearish root
       if(currBearish && prevBullish && latestBearishRoot==0){
          rates[i].open > rates[i+1].close ? latestBearishRoot=rates[i].open : latestBearishRoot=rates[i+1].close; //avoiding the gap trap
          bearishRootIdx=i;
       }

       if(latestBullishRoot!=0 && latestBearishRoot!=0){
          Print("roots successfully loaded");
          break;
       }
    }

    if(latestBullishRoot==0 || latestBearishRoot==0){
       Print("failed to load one of roots");
       return false;
    }

    if(rates[1].close > latestBearishRoot){
       orderflowCurrent=1;
    }
    else if(rates[1].close < latestBullishRoot){
       orderflowCurrent=-1;
    }
    else{ // closing in between — the most recently formed root decides
       orderflowCurrent = (bullishRootIdx < bearishRootIdx) ? 1 : -1;
    }

    return true;
}

bool COrderflow::whatWasOrderflow(const int index,int &orderflowFlag, double &bearishRoot, double &bullishRoot){
   if(bearishRoot!=0||bullishRoot!=0)
     {
      Print("Reference provided is already loaded, reset it before proceeding");
      Sleep(200);
      bullishRoot=0;
      bearishRoot=0;
     }

    int bullishRootIdx=0, bearishRootIdx=0;

    for(int i=index; i<Bars(_Symbol,PERIOD_CURRENT)-1; i++){
       bool currBullish = rates[i].close > rates[i].open;
       bool currBearish = rates[i].close < rates[i].open;
       bool prevBullish = rates[i+1].close > rates[i+1].open;
       bool prevBearish = rates[i+1].close < rates[i+1].open;

       // Bullish candle after bearish → start of bullish move → bullish root
       if(currBullish && prevBearish && bullishRoot==0){
          rates[i].open < rates[i+1].close ? bullishRoot=rates[i].open : bullishRoot=rates[i+1].close; //avoiding the gap trap
          bullishRootIdx=i;
       }

       // Bearish candle after bullish → start of bearish move → bearish root
       if(currBearish && prevBullish && bearishRoot==0){
          rates[i].open > rates[i+1].close ? bearishRoot=rates[i].open : bearishRoot=rates[i+1].close; //avoiding the gap trap
          bearishRootIdx=i;
       }

       if(bullishRoot!=0 && bearishRoot!=0)
          break;
    }

    if(bullishRoot==0 || bearishRoot==0)
       return false;

    if(rates[index].close > bearishRoot){
       orderflowFlag=1;
    }
    else if(rates[index].close < bullishRoot){
       orderflowFlag=-1;
    }
    else{ // closing in between — the most recently formed root decides
       orderflowFlag = (bullishRootIdx < bearishRootIdx) ? 1 : -1;
    }

    return true;
}

void COrderflow::update(void){
   if(orderflowCurrent==0){
      Print("There was NULL Orderflow, trying to initialize right now.. ");
      COrderflow::initialize();
   }
   
   if(orderflowCurrent==1){ //the current orderflow is bullish
      if(rates[1].close<latestBullishRoot){
         //cisd
         isCISD=true;
         orderflowCurrent=-1;
      }
      
      if(rates[1].close<rates[1].open //
      && rates[2].close>rates[2].open){ //receiving first-time opposing candle
      //
         rates[1].open>rates[2].close ? latestBearishRoot=rates[1].open : latestBearishRoot=rates[2].close;
      }
      
      if(rates[1].close>rates[1].open //
      && rates[2].close<rates[2].open){ //receiving first-time opposing candle
      //
         rates[1].open>rates[2].close ? latestBullishRoot=rates[2].close : latestBullishRoot=rates[1].open;
     }
     
   }

   if(orderflowCurrent==-1){ //the current orderflow is bearish
      if(rates[1].close>latestBearishRoot){
         //cisd
         isCISD=true;
         orderflowCurrent=1;
      }
      
      if(rates[1].close>rates[1].open //
      && rates[2].close<rates[2].open){ //receiving first-time opposing candle
      //
         rates[1].open>rates[2].close ? latestBullishRoot=rates[2].close : latestBullishRoot=rates[1].open;
      }
      
      if(rates[1].close<rates[1].open //
      && rates[2].close>rates[2].open){ //receiving first-time opposing candle
      //
         rates[1].open>rates[2].close ? latestBearishRoot=rates[1].open : latestBearishRoot=rates[2].close;
      }
    }      

}