//+------------------------------------------------------------------+
//|                                              ChartStructure.mqh  |
//|                   Market Structure Analysis: HH, HL, LH, LL      |
//|   STANDALONE VERSION - No external dependencies                  |
//+------------------------------------------------------------------+

#property copyright "QuarterTheory x VIZION"
#property version   "1.00"
#property strict

//================ STRUCTURE ENUMS ==================//
enum ENUM_SWING_TYPE
{
   SWING_HIGH,
   SWING_LOW
};

enum ENUM_MARKET_STRUCTURE
{
   STRUCTURE_UPTREND,
   STRUCTURE_DOWNTREND,
   STRUCTURE_RANGING,
   STRUCTURE_BREAKING
};

//================ STRUCTURE CLASSES ==================//
struct SwingPoint
{
   ENUM_SWING_TYPE type;
   double          price;
   datetime        time;
   int             bar_index;
   bool            is_higher_high;
   bool            is_lower_low;
   bool            is_higher_low;
   bool            is_lower_high;
   bool            is_structure_break;
};

//================ GLOBAL VARIABLES ==================//
SwingPoint g_SwingPoints[];
int g_SwingCount = 0;
const int MAX_SWINGS = 50;

ENUM_MARKET_STRUCTURE g_CurrentStructure = STRUCTURE_RANGING;
double g_LastHighHigh = 0;
double g_LastHighLow = 0;
double g_LastLowHigh = 0;
double g_LastLowLow = 0;

int g_ConsecutiveHH = 0;
int g_ConsecutiveHL = 0;
int g_ConsecutiveLH = 0;
int g_ConsecutiveLL = 0;

bool g_BullishStructureBreak = false;
bool g_BearishStructureBreak = false;

//+------------------------------------------------------------------+
//| Initialize Chart Structure System                                |
//+------------------------------------------------------------------+
bool InitializeChartStructure()
{
   ArrayResize(g_SwingPoints, MAX_SWINGS);
   g_SwingCount = 0;
   
   Print("✅ Chart Structure Analysis Initialized");
   
   return true;
}

//+------------------------------------------------------------------+
//| Main Structure Detection                                         |
//+------------------------------------------------------------------+
void DetectMarketStructure()
{
   MqlRates rates[];
   ArraySetAsSeries(rates, true);
   int copied = CopyRates(_Symbol, _Period, 0, 200, rates);
   
   if(copied < 50) return;
   
   IdentifySwingPoints(rates);
   ClassifySwingRelationships();
   DetermineMarketStructure();
   DetectStructureBreaks(rates);
   UpdateStructureCounters();
}

//+------------------------------------------------------------------+
//| Identify Swing Highs and Lows                                    |
//+------------------------------------------------------------------+
void IdentifySwingPoints(const MqlRates &rates[])
{
   g_SwingCount = 0;
   
   const int swing_bars = 5;
   
   for(int i = swing_bars; i < ArraySize(rates) - swing_bars; i++)
   {
      bool is_swing_high = true;
      bool is_swing_low = true;
      
      for(int j = 1; j <= swing_bars; j++)
      {
         if(rates[i].high <= rates[i-j].high || rates[i].high <= rates[i+j].high)
         {
            is_swing_high = false;
            break;
         }
      }
      
      for(int j = 1; j <= swing_bars; j++)
      {
         if(rates[i].low >= rates[i-j].low || rates[i].low >= rates[i+j].low)
         {
            is_swing_low = false;
            break;
         }
      }
      
      if(is_swing_high && g_SwingCount < MAX_SWINGS)
      {
         SwingPoint swing;
         swing.type = SWING_HIGH;
         swing.price = rates[i].high;
         swing.time = rates[i].time;
         swing.bar_index = i;
         swing.is_higher_high = false;
         swing.is_lower_high = false;
         swing.is_structure_break = false;
         
         g_SwingPoints[g_SwingCount] = swing;
         g_SwingCount++;
      }
      
      if(is_swing_low && g_SwingCount < MAX_SWINGS)
      {
         SwingPoint swing;
         swing.type = SWING_LOW;
         swing.price = rates[i].low;
         swing.time = rates[i].time;
         swing.bar_index = i;
         swing.is_higher_low = false;
         swing.is_lower_low = false;
         swing.is_structure_break = false;
         
         g_SwingPoints[g_SwingCount] = swing;
         g_SwingCount++;
      }
   }
   
   SortSwingsByTime();
}

//+------------------------------------------------------------------+
//| Sort Swings by Time                                              |
//+------------------------------------------------------------------+
void SortSwingsByTime()
{
   for(int i = 0; i < g_SwingCount - 1; i++)
   {
      for(int j = 0; j < g_SwingCount - i - 1; j++)
      {
         if(g_SwingPoints[j].time < g_SwingPoints[j+1].time)
         {
            SwingPoint temp = g_SwingPoints[j];
            g_SwingPoints[j] = g_SwingPoints[j+1];
            g_SwingPoints[j+1] = temp;
         }
      }
   }
}

//+------------------------------------------------------------------+
//| Classify Swing Relationships                                     |
//+------------------------------------------------------------------+
void ClassifySwingRelationships()
{
   if(g_SwingCount < 2) return;
   
   for(int i = 0; i < g_SwingCount; i++)
   {
      SwingPoint curr = g_SwingPoints[i];
      
      for(int j = i + 1; j < g_SwingCount; j++)
      {
         SwingPoint previous = g_SwingPoints[j];
         
         if(curr.type == previous.type)
         {
            if(curr.type == SWING_HIGH)
            {
               if(curr.price > previous.price)
               {
                  g_SwingPoints[i].is_higher_high = true;
                  g_LastHighHigh = curr.price;
               }
               else
               {
                  g_SwingPoints[i].is_lower_high = true;
                  g_LastLowHigh = curr.price;
               }
            }
            else
            {
               if(curr.price > previous.price)
               {
                  g_SwingPoints[i].is_higher_low = true;
                  g_LastHighLow = curr.price;
               }
               else
               {
                  g_SwingPoints[i].is_lower_low = true;
                  g_LastLowLow = curr.price;
               }
            }
            break;
         }
      }
   }
}

//+------------------------------------------------------------------+
//| Determine Overall Market Structure                               |
//+------------------------------------------------------------------+
void DetermineMarketStructure()
{
   int hh_count = 0, hl_count = 0;
   int lh_count = 0, ll_count = 0;
   
   int lookback = MathMin(10, g_SwingCount);
   
   for(int i = 0; i < lookback; i++)
   {
      if(g_SwingPoints[i].is_higher_high) hh_count++;
      if(g_SwingPoints[i].is_higher_low) hl_count++;
      if(g_SwingPoints[i].is_lower_high) lh_count++;
      if(g_SwingPoints[i].is_lower_low) ll_count++;
   }
   
   ENUM_MARKET_STRUCTURE prev_structure = g_CurrentStructure;
   
   if(hh_count >= 2 && hl_count >= 1)
   {
      g_CurrentStructure = STRUCTURE_UPTREND;
   }
   else if(lh_count >= 2 && ll_count >= 1)
   {
      g_CurrentStructure = STRUCTURE_DOWNTREND;
   }
   else
   {
      g_CurrentStructure = STRUCTURE_RANGING;
   }
   
   if(prev_structure != g_CurrentStructure && prev_structure != STRUCTURE_RANGING)
   {
      if(prev_structure == STRUCTURE_UPTREND && g_CurrentStructure == STRUCTURE_DOWNTREND)
      {
         g_BearishStructureBreak = true;
         Print("📉 BEARISH STRUCTURE BREAK");
      }
      else if(prev_structure == STRUCTURE_DOWNTREND && g_CurrentStructure == STRUCTURE_UPTREND)
      {
         g_BullishStructureBreak = true;
         Print("📈 BULLISH STRUCTURE BREAK");
      }
   }
}

//+------------------------------------------------------------------+
//| Detect Structure Breaks                                          |
//+------------------------------------------------------------------+
void DetectStructureBreaks(const MqlRates &rates[])
{
   if(g_SwingCount < 4) return;
   
   double current_price = rates[0].close;
   
   if(g_CurrentStructure == STRUCTURE_UPTREND)
   {
      for(int i = 0; i < g_SwingCount; i++)
      {
         if(g_SwingPoints[i].type == SWING_HIGH)
         {
            if(current_price > g_SwingPoints[i].price)
            {
               Print("⚡ BOS - Bullish structure continues");
               break;
            }
         }
      }
   }
   
   if(g_CurrentStructure == STRUCTURE_DOWNTREND)
   {
      for(int i = 0; i < g_SwingCount; i++)
      {
         if(g_SwingPoints[i].type == SWING_LOW)
         {
            if(current_price < g_SwingPoints[i].price)
            {
               Print("⚡ BOS - Bearish structure continues");
               break;
            }
         }
      }
   }
}

//+------------------------------------------------------------------+
//| Update Structure Counters                                        |
//+------------------------------------------------------------------+
void UpdateStructureCounters()
{
   g_ConsecutiveHH = 0;
   g_ConsecutiveHL = 0;
   g_ConsecutiveLH = 0;
   g_ConsecutiveLL = 0;
   
   int lookback = MathMin(6, g_SwingCount);
   
   for(int i = 0; i < lookback; i++)
   {
      if(g_SwingPoints[i].is_higher_high) g_ConsecutiveHH++;
      if(g_SwingPoints[i].is_higher_low) g_ConsecutiveHL++;
      if(g_SwingPoints[i].is_lower_high) g_ConsecutiveLH++;
      if(g_SwingPoints[i].is_lower_low) g_ConsecutiveLL++;
   }
}

//+------------------------------------------------------------------+
//| Get Structure Information Functions                              |
//+------------------------------------------------------------------+
ENUM_MARKET_STRUCTURE GetCurrentStructure()
{
   return g_CurrentStructure;
}

string GetStructureString()
{
   switch(g_CurrentStructure)
   {
      case STRUCTURE_UPTREND: return "UPTREND (HH+HL)";
      case STRUCTURE_DOWNTREND: return "DOWNTREND (LH+LL)";
      case STRUCTURE_RANGING: return "RANGING";
      case STRUCTURE_BREAKING: return "BREAKING";
      default: return "UNKNOWN";
   }
}

bool IsUptrend()
{
   return g_CurrentStructure == STRUCTURE_UPTREND;
}

bool IsDowntrend()
{
   return g_CurrentStructure == STRUCTURE_DOWNTREND;
}

bool IsRanging()
{
   return g_CurrentStructure == STRUCTURE_RANGING;
}

int GetConsecutiveHH()
{
   return g_ConsecutiveHH;
}

int GetConsecutiveHL()
{
   return g_ConsecutiveHL;
}

int GetConsecutiveLH()
{
   return g_ConsecutiveLH;
}

int GetConsecutiveLL()
{
   return g_ConsecutiveLL;
}

bool IsBullishStructureBreak()
{
   bool result = g_BullishStructureBreak;
   g_BullishStructureBreak = false;
   return result;
}

bool IsBearishStructureBreak()
{
   bool result = g_BearishStructureBreak;
   g_BearishStructureBreak = false;
   return result;
}

double GetNearestSwingHigh()
{
   for(int i = 0; i < g_SwingCount; i++)
   {
      if(g_SwingPoints[i].type == SWING_HIGH)
         return g_SwingPoints[i].price;
   }
   return 0;
}

double GetNearestSwingLow()
{
   for(int i = 0; i < g_SwingCount; i++)
   {
      if(g_SwingPoints[i].type == SWING_LOW)
         return g_SwingPoints[i].price;
   }
   return 0;
}

int GetStructureStrength()
{
   int strength = 0;
   
   if(g_CurrentStructure == STRUCTURE_UPTREND)
   {
      strength = (g_ConsecutiveHH * 20) + (g_ConsecutiveHL * 15);
   }
   else if(g_CurrentStructure == STRUCTURE_DOWNTREND)
   {
      strength = (g_ConsecutiveLH * 20) + (g_ConsecutiveLL * 15);
   }
   
   return MathMin(strength, 100);
}

//+------------------------------------------------------------------+
//| Draw Structure on Chart                                          |
//+------------------------------------------------------------------+
void DrawStructureOnChart()
{
   ObjectsDeleteAll(0, "STRUCTURE_");
   
   for(int i = 0; i < MathMin(20, g_SwingCount); i++)
   {
      string name = "STRUCTURE_SWING_" + IntegerToString(i);
      
      if(g_SwingPoints[i].type == SWING_HIGH)
      {
         if(g_SwingPoints[i].is_higher_high)
         {
            ObjectCreate(0, name, OBJ_ARROW_DOWN, 0, g_SwingPoints[i].time, 
                        g_SwingPoints[i].price);
            ObjectSetInteger(0, name, OBJPROP_COLOR, clrLime);
            ObjectSetString(0, name, OBJPROP_TEXT, "HH");
         }
         else if(g_SwingPoints[i].is_lower_high)
         {
            ObjectCreate(0, name, OBJ_ARROW_DOWN, 0, g_SwingPoints[i].time, 
                        g_SwingPoints[i].price);
            ObjectSetInteger(0, name, OBJPROP_COLOR, clrOrange);
            ObjectSetString(0, name, OBJPROP_TEXT, "LH");
         }
      }
      else
      {
         if(g_SwingPoints[i].is_higher_low)
         {
            ObjectCreate(0, name, OBJ_ARROW_UP, 0, g_SwingPoints[i].time, 
                        g_SwingPoints[i].price);
            ObjectSetInteger(0, name, OBJPROP_COLOR, clrLime);
            ObjectSetString(0, name, OBJPROP_TEXT, "HL");
         }
         else if(g_SwingPoints[i].is_lower_low)
         {
            ObjectCreate(0, name, OBJ_ARROW_UP, 0, g_SwingPoints[i].time, 
                        g_SwingPoints[i].price);
            ObjectSetInteger(0, name, OBJPROP_COLOR, clrRed);
            ObjectSetString(0, name, OBJPROP_TEXT, "LL");
         }
      }
      
      ObjectSetInteger(0, name, OBJPROP_FONTSIZE, 8);
      ObjectSetInteger(0, name, OBJPROP_ANCHOR, ANCHOR_CENTER);
   }
}

void CleanupStructureObjects()
{
   ObjectsDeleteAll(0, "STRUCTURE_");
}