//+------------------------------------------------------------------+
//|                                  FXMacroData_MacroPanel.mq5     |
//|  Displays a live macroeconomic data panel on the MT5 chart.      |
//|  Powered by the FXMacroData API — https://fxmacrodata.com        |
//+------------------------------------------------------------------+
//
//  SETUP
//  1. Copy FXMacroData.mqh  → <terminal>\MQL5\Include\
//  2. Copy this file        → <terminal>\MQL5\Indicators\
//  3. In MT5: Tools > Options > Expert Advisors
//       Check "Allow WebRequest for listed URL" and add:
//       https://fxmacrodata.com
//  4. Attach the indicator to any currency-pair chart.
//  5. Enter your API key in the Inputs tab (leave blank to use the
//     free USD tier for testing).
//
//  The panel refreshes every RefreshMinutes minutes.
//  Indicators shown: Policy Rate, CPI Inflation, Unemployment, GDP.
//
//  DOCUMENTATION  https://fxmacrodata.com/documentation/metatrader
//  GET AN API KEY https://fxmacrodata.com/subscribe
//+------------------------------------------------------------------+
#property copyright "FXMacroData"
#property link      "https://fxmacrodata.com"
#property version   "1.00"
#property indicator_chart_window
#property indicator_plots 0

#include <FXMacroData.mqh>

//--- Inputs -----------------------------------------------------------
input string ApiKey         = "";     // API Key (blank = free USD tier)
input string BaseOverride   = "";     // Override base currency (e.g. EUR)
input string QuoteOverride  = "";     // Override quote currency (e.g. USD)
input int    RefreshMinutes = 5;      // Refresh interval (minutes)
input int    PanelX         = 10;     // Panel X offset from top-left corner
input int    PanelY         = 30;     // Panel Y offset from top-left corner
input int    FontSize       = 9;      // Text size in points
input color  ColorHeader    = C'100,149,237'; // Header colour
input color  ColorLabel     = C'148,163,184'; // Label colour
input color  ColorValue     = clrWhite;       // Value colour

//--- State ------------------------------------------------------------
string   g_base         = "";
string   g_quote        = "";
datetime g_last_refresh = 0;

struct FmdRow { string label; double value; string unit; };
FmdRow g_rows[];

string INDICATORS[] = {"policy_rate","inflation","unemployment","gdp"};
string LABELS[]     = {"Policy Rate","Inflation","Unemployment","GDP Growth"};

//+------------------------------------------------------------------+
int OnInit()
  {
   DetectCurrencies();
   Refresh();
   return INIT_SUCCEEDED;
  }

//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const int begin,
                const double& price[])
  {
   if(TimeCurrent() - g_last_refresh >= (datetime)(RefreshMinutes * 60))
      Refresh();
   DrawPanel();
   return rates_total;
  }

//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   ObjectsDeleteAll(0, "FXMD_");
   ChartRedraw(0);
  }

//+------------------------------------------------------------------+
void DetectCurrencies()
  {
   string sym = _Symbol;
   g_base  = (StringLen(BaseOverride)  > 0) ? BaseOverride  : StringSubstr(sym, 0, 3);
   g_quote = (StringLen(QuoteOverride) > 0) ? QuoteOverride : StringSubstr(sym, 3, 3);
   StringToLower(g_base);
   StringToLower(g_quote);
  }

//+------------------------------------------------------------------+
void Refresh()
  {
   int n = ArraySize(INDICATORS);
   ArrayResize(g_rows, n * 2);
   int idx = 0;
   for(int i = 0; i < n; i++)
     {
      string json_b = FMD_GetIndicator(g_base,  INDICATORS[i], ApiKey);
      string json_q = FMD_GetIndicator(g_quote, INDICATORS[i], ApiKey);

      string base_upper  = g_base;  StringToUpper(base_upper);
      string quote_upper = g_quote; StringToUpper(quote_upper);

      g_rows[idx].label = base_upper  + " " + LABELS[i];
      g_rows[idx].value = FMD_LastValue(json_b);
      g_rows[idx].unit  = "%";
      idx++;
      g_rows[idx].label = quote_upper + " " + LABELS[i];
      g_rows[idx].value = FMD_LastValue(json_q);
      g_rows[idx].unit  = "%";
      idx++;
     }
   g_last_refresh = TimeCurrent();
  }

//+------------------------------------------------------------------+
void DrawPanel()
  {
   int line_h = FontSize + 9;
   int x      = PanelX;
   int y      = PanelY;

   string base_upper  = g_base;  StringToUpper(base_upper);
   string quote_upper = g_quote; StringToUpper(quote_upper);

   // Header
   PutLabel("FXMD_HDR",
            base_upper + "/" + quote_upper + "  Macro Snapshot",
            x, y, ColorHeader, FontSize + 1, true);
   y += line_h + 2;

   PutLabel("FXMD_SUB", "Powered by FXMacroData", x, y, ColorLabel, FontSize - 1, false);
   y += line_h + 4;

   int rows = ArraySize(g_rows);
   for(int i = 0; i < rows; i++)
     {
      string val_str = (g_rows[i].value == EMPTY_VALUE)
         ? "n/a"
         : DoubleToString(g_rows[i].value, 2) + g_rows[i].unit;

      PutLabel("FXMD_L" + IntegerToString(i), g_rows[i].label + ":", x,       y, ColorLabel, FontSize, false);
      PutLabel("FXMD_V" + IntegerToString(i), val_str,              x + 148,  y, ColorValue,  FontSize, false);
      y += line_h;
     }
   ChartRedraw(0);
  }

//+------------------------------------------------------------------+
void PutLabel(const string name, const string text,
              const int x, const int y,
              const color clr, const int size, const bool bold)
  {
   if(ObjectFind(0, name) < 0)
      ObjectCreate(0, name, OBJ_LABEL, 0, 0, 0);
   ObjectSetInteger(0, name, OBJPROP_CORNER,    CORNER_LEFT_UPPER);
   ObjectSetInteger(0, name, OBJPROP_XDISTANCE, x);
   ObjectSetInteger(0, name, OBJPROP_YDISTANCE, y);
   ObjectSetString(0,  name, OBJPROP_TEXT,      text);
   ObjectSetInteger(0, name, OBJPROP_COLOR,     clr);
   ObjectSetInteger(0, name, OBJPROP_FONTSIZE,  size);
   ObjectSetString(0,  name, OBJPROP_FONT,      bold ? "Arial Bold" : "Arial");
   ObjectSetInteger(0, name, OBJPROP_SELECTABLE, false);
   ObjectSetInteger(0, name, OBJPROP_HIDDEN,     true);
  }