I want to convert my indicator from Trading view to MQL5

I need an indicatorv for MQL5, It uses CCi and 2 EMA, the strategy is; Ema 50 and 200, when Above ema 50 we look for buy signal and when below we look for sell, the CCI should be 20 period with 150 and -150 once the price is overbought and oversold and it renter the level 150 and -150 with the confermition of ema we have the signal

I want to add the alert to the signal

#property indicator_chart_mode ANY

#property indicator_separate_window true  // Optional: Separate window for indicator

#include "iCustom\\iCustom.mqh" // Include for custom indicator functions (if needed)

int  ema50Length = 50;
int  ema200Length = 200;
int  cciLength = 20;
double overbought = 150;
double oversold = -150;

double ema50[], ema200[], cci[];

bool trendBullish, trendBearish;
bool buySignal[], sellSignal[]; // Arrays for storing signals

// Function to calculate EMA (replace with custom function if needed)
double iCustom_EMA(double price[], int period) {
  double sum = 0.0;
  for (int i = 0; i < period; i++) {
    sum += price[Close];
  }
  return sum / period * (2.0 / (period + 1.0));
}

int OnInit() {
  ema50 = ArrayDimension(ema50Length);  // Allocate arrays
  ema200 = ArrayDimension(ema200Length);
  cci = ArrayDimension(cciLength);

  buySignal = ArrayDimension(Bars);  // Allocate arrays for signals
  sellSignal = ArrayDimension(Bars);

  return(INIT_SUCCEEDED);
}

int OnCalculate(const int start, const int end) {
  if(start == 0) {
    // Initialize arrays on the first call
    for (int i = 0; i < ArraySize(ema50); i++) {
      ema50[i] = iCustom_EMA(Close, ema50Length);  // Replace with custom EMA function if needed
      ema200[i] = iCustom_EMA(Close, ema200Length);  // Replace with custom EMA function if needed
    }
  }

  for (int i = start; i <= end; i++) {
    // Calculate CCI
    cci[i] = iCustom_CCI(Close, cciLength);  // Replace with custom CCI function if needed

    // Calculate trend and signals
    trendBullish = ema50[i] > ema200[i];
    trendBearish = ema50[i] < ema200[i];

    buySignal[i] = trendBullish && iCustom_CrossOver(cci[i], oversold);  // Replace with custom crossover function if needed
    sellSignal[i] = trendBearish && iCustom_CrossUnder(cci[i], overbought);  // Replace with custom crossunder function if needed
  }

  // Plotting (modify colors, styles, and window as needed)
  PlotLine(ema50, SHIFT, colorBlue, 1, title="EMA 50");
  PlotLine(ema200, SHIFT, colorRed, 1, title="EMA 200");

  PlotIcon(buySignal, SHIFT, STYLE_ARROWUP, colorGreen, 10);  // Consider using labels or different icons
  PlotIcon(sellSignal, SHIFT, STYLE_ARROWDOWN, colorRed, 10);   // Consider using labels or different icons

  return(0);
}