//////////////////////////////////////////////////////////////////////
//
// SaherElm IT Center MQL5 XOBD Indicator Helper for Signal Providers
// -------------------------------------------------------------------
//
//
// Maintainer:
// ------------
// Hadi Khazaee Asl (hadi_khazaee_asl@yahoo.com)
//
////////////////////////////////////////////////////////////////////////
//
// Global Properties ...
#property library
#property copyright "Copyright 2023, SaherElm IT Center"
#property link "https://www.saherelm.ir"
#property version "1.00"
#property strict

//
#include "..\Libraries\x-saherelm.log.lib.mq5"
#include "..\Libraries\x-saherelm.common.lib.mq5"
#include "x-saherelm.xmap.provider.inputs.lib.mq5"

//
// START Enum Definitions ...
//
//
// END Enum Definitions ...
//

//
// START Inputs ...
//
input group "XOBD Indicator";
input int xOBDLength = 14;                        // Market Length
input double xOBDArrowDistanceFromPrice = 0;      // Arrow Distrance from Price
input uchar xOBDSwingHighArrowCode = 108;         // Swing High Arrow Code
input color xOBDSwingHighArrowColor = clrMagenta; // Swing High Arrow Color
input uchar xOBDSwingLowArrowCode = 108;          // Swing Low Arrow Code
input color xOBDSwingLowArrowColor = clrAqua;     // Swing Low Arrow Color
//
// END Inputs ...
//

//
// START Definitions ...
//
int xOBDHandler = INVALID_HANDLE;
double xOBDSwingsBuffer[];
//
// END Definitions ...
//

//
// START Handler Functions ...
//
//
// Init Indicators ...
bool XOBDInitHandlers()
{
    //
    bool result = false;

    //
    // Initialize Indicator/Oscillator Handlers ...
    ResetLastError();

    //
    // XOBD Handler ...
    ArraySetAsSeries(xOBDSwingsBuffer, true);
    xOBDHandler = iCustom(
        _Symbol,
        _Period,
        "x-saherelm.xobd.indicator",
        //
        // Inputs ...
        xOBDLength,
        xOBDArrowDistanceFromPrice,
        xOBDSwingHighArrowCode,
        xOBDSwingHighArrowColor,
        xOBDSwingLowArrowCode,
        xOBDSwingLowArrowColor);
    if (xOBDHandler == INVALID_HANDLE)
    {
        //
        LogMessage("failed to Initialize XOBD Indicator: " + (string)GetLastError());
        return result;
    }

    //
    result = true;

    //
    return result;
}

//
// Release Indicators ...
void XOBDReleaseHandlers()
{
    IndicatorRelease(xOBDHandler);
}

//
// Handle Reading Buffers ...
void XOBDReadBuffers()
{
    CopyBuffer(
        xOBDHandler,
        0,
        0,
        xMAPNumberOfItemsPerTick,
        xOBDSwingsBuffer);
}
//
// END Handler Funcions ...
//

//
// START XOBD Custom Functions ...
//
//
// Find Peak based On this Indicator ...
bool XOBDIsPeak(
    int loopback // loopback length
)
{
    //
    bool result = false;

    //
    return result;
}

//
// Find Vale based On this Indicator ...
bool XOBDIsVale(
    int loopback // loopback length
)
{
    //
    bool result = false;

    //
    return result;
}

//
// Find Lesser Swing Low ...
double XOBDGetSmallestSwingLow(
    double price,               // a price which swings compare with it
    int numberOfSwingsCheck = 4 // number of Swing Lows to Check
)
{
    //
    double result = price;

    //
    double swings[];
    ArraySetAsSeries(swings, true);
    XOBDRetrieveSwings(
        numberOfSwingsCheck,
        X_SWING_LOW,
        swings);

    //
    for (int i = 0; i < ArraySize(swings); i++)
    {
        //
        double swingVal = swings[i];

        //
        result = swingVal < result ? swingVal : result;
    }

    //
    return result;
}

//
// Find Bigger Swing High ...
double XOBDGetBiggestSwingHigh(
    double price,               // a price which swings compare with it
    int numberOfSwingsCheck = 4 // number of Swing Lows to Check
)
{
    //
    double result = price;

    //
    double swings[];
    ArraySetAsSeries(swings, true);
    XOBDRetrieveSwings(
        numberOfSwingsCheck,
        X_SWING_HIGH,
        swings);

    //
    for (int i = 0; i < ArraySize(swings); i++)
    {
        //
        double swingVal = swings[i];

        //
        result = swingVal > result ? swingVal : result;
    }

    //
    return result;
}

//
// Reading Special Type of Swings from Buffer until specific count passed ...
void XOBDRetrieveSwings(
    int count,              // Number of Swings to Retrieve
    ENUM_X_SWING_TYPE type, // Which Type of Swing to Retrieve
    double &result[]        // Holds result
)
{
    //
    static int xMAPSwingsBufferReadItems = 50;

    //
    // Clear Result ...
    ArrayFree(result);
    ArrayResize(result, 0);

    //
    // Validate Args ...
    if (count <= 0 || type == X_NO_SWING)
    {
        return;
    }

    //
    double swingsBuffer[];
    ArraySetAsSeries(swingsBuffer, true);
    //
    // TODO:
    // CopyBuffer(xOBDHandler, 0, 0, xMAPSwingsBufferReadItems, swingsBuffer);
    int foundedSwings = ArraySize(swingsBuffer);
    if (foundedSwings <= 0)
    {
        return;
    }

    //
    // Loop through Swings ...
    for (int i = 0; i < foundedSwings; i++)
    {
        //
        double swingValue = swingsBuffer[i];
        if (swingValue != type)
        {
            continue;
        }

        //
        ArrayResize(
            result,
            ArraySize(result) + 1);
        result[ArraySize(result) - 1] = swingValue;
    }

    //
    // Check Result count ...
    if (ArraySize(result) < count)
    {
        //
        xMAPSwingsBufferReadItems *= 2;
        XOBDRetrieveSwings(
            count,
            type,
            result);

        //
        return;
    }

    //
    xMAPSwingsBufferReadItems = 50;
}

//
// END XOBD Custom Functions ...
//