// +------------------------------------------------------------------+
// |                                  FXMacroData_MacroPanel.cs      |
// |   Live macro panel indicator for NinjaTrader 8                   |
// |                  https://fxmacrodata.com                        |
// +------------------------------------------------------------------+
//
//  Shows Policy Rate, Inflation, Unemployment and GDP for both
//  currencies of the active chart instrument in a fixed panel.
//
//  INSTALLATION
//  1. Copy FXMacroDataService.cs and this file to:
//       Documents\NinjaTrader 8\bin\Custom\Indicators\
//  2. In NinjaTrader open Tools > New NinjaScript Editor, then
//     File > Compile All.  Both files must compile with 0 errors.
//  3. Add "FXMacroData_MacroPanel" from Indicators to any FX chart.
//  4. In the Inputs tab enter your API key (leave empty for USD free tier).
//
//  DOCUMENTATION  https://fxmacrodata.com/documentation/ninjatrader
//  API KEY        https://fxmacrodata.com/subscribe
// +------------------------------------------------------------------+

#region Using declarations
using System;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Windows.Media;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
#endregion

namespace NinjaTrader.NinjaScript.Indicators
{
    [Description("FXMacroData live macro panel — Policy Rate, Inflation, Unemployment and GDP for the active pair.")]
    public class FXMacroData_MacroPanel : Indicator
    {
        // ── Private state ──────────────────────────────────────────────────────
        private DateTime _lastFetch  = DateTime.MinValue;
        private string   _panelText  = string.Empty;

        // ── NinjaScript lifecycle ──────────────────────────────────────────────
        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description      = "FXMacroData live macro panel — Policy Rate, Inflation, Unemployment, GDP.";
                Name             = "FXMacroData_MacroPanel";
                Calculate        = Calculate.OnBarClose;
                IsOverlay        = true;
                DisplayInDataBox = false;

                // Default input values
                ApiKey         = string.Empty;
                BaseOverride   = string.Empty;
                QuoteOverride  = string.Empty;
                RefreshMinutes = 60;
                FontSize       = 11;
            }
        }

        protected override void OnBarUpdate()
        {
            // Only act on the most recent bar
            if (CurrentBar < 1 || !BarsArray[0].IsFirstBarOfSession && CurrentBar != BarsArray[0].Count - 1)
                return;

            // Throttle API calls to RefreshMinutes interval
            if ((DateTime.UtcNow - _lastFetch).TotalMinutes < RefreshMinutes)
                return;

            _lastFetch = DateTime.UtcNow;
            FetchAndDraw();
        }

        // ── Data fetching and display ──────────────────────────────────────────
        private void FetchAndDraw()
        {
            // Detect currencies from the instrument name (e.g. "EUR/USD", "EURUSD")
            string raw    = Instrument.FullName.Replace("/", "").ToLower();
            string cBase  = !string.IsNullOrEmpty(BaseOverride)
                            ? BaseOverride.ToLower()
                            : (raw.Length >= 3 ? raw.Substring(0, 3) : "usd");
            string cQuote = !string.IsNullOrEmpty(QuoteOverride)
                            ? QuoteOverride.ToLower()
                            : (raw.Length >= 6 ? raw.Substring(3, 3) : "eur");

            string key = ApiKey ?? string.Empty;

            var sb = new System.Text.StringBuilder();
            AppendCurrencyBlock(sb, cBase.ToUpper(),  cBase,  key);
            sb.AppendLine();
            AppendCurrencyBlock(sb, cQuote.ToUpper(), cQuote, key);

            _panelText = sb.ToString();

            Draw.TextFixed(
                this,
                "fmd_panel",
                _panelText,
                TextPosition.TopLeft,
                Brushes.White,
                new SimpleFont("Courier New", FontSize),
                Brushes.Transparent,
                Brushes.Black,
                70);
        }

        private void AppendCurrencyBlock(System.Text.StringBuilder sb, string label, string ccy, string apiKey)
        {
            double rate = NinjaTrader.Custom.FXMacroDataService.LastValue(
                          NinjaTrader.Custom.FXMacroDataService.GetIndicator(ccy, "policy_rate",  apiKey));
            double cpi  = NinjaTrader.Custom.FXMacroDataService.LastValue(
                          NinjaTrader.Custom.FXMacroDataService.GetIndicator(ccy, "inflation",    apiKey));
            double uemp = NinjaTrader.Custom.FXMacroDataService.LastValue(
                          NinjaTrader.Custom.FXMacroDataService.GetIndicator(ccy, "unemployment", apiKey));
            double gdp  = NinjaTrader.Custom.FXMacroDataService.LastValue(
                          NinjaTrader.Custom.FXMacroDataService.GetIndicator(ccy, "gdp",          apiKey));

            sb.AppendLine(string.Format("── {0} ──────────────", label));
            sb.AppendLine(string.Format("  Policy Rate  : {0}", Fmt(rate)));
            sb.AppendLine(string.Format("  Inflation    : {0}", Fmt(cpi)));
            sb.AppendLine(string.Format("  Unemployment : {0}", Fmt(uemp)));
            sb.AppendLine(string.Format("  GDP          : {0}", Fmt(gdp)));
        }

        private static string Fmt(double v)
        {
            return double.IsNaN(v) ? "n/a" : v.ToString("0.##") + "%";
        }

        // ── Input properties ───────────────────────────────────────────────────

        [NinjaScriptProperty]
        [Display(Name = "API Key", Order = 1, GroupName = "FXMacroData",
                 Description = "Your FXMacroData API key. Leave empty to use the free USD tier.")]
        public string ApiKey { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "Base Currency Override", Order = 2, GroupName = "FXMacroData",
                 Description = "Force the base currency code (e.g. 'eur'). Leave empty to auto-detect from the instrument.")]
        public string BaseOverride { get; set; }

        [NinjaScriptProperty]
        [Display(Name = "Quote Currency Override", Order = 3, GroupName = "FXMacroData",
                 Description = "Force the quote currency code (e.g. 'usd'). Leave empty to auto-detect from the instrument.")]
        public string QuoteOverride { get; set; }

        [NinjaScriptProperty]
        [Range(1, 1440)]
        [Display(Name = "Refresh Interval (minutes)", Order = 4, GroupName = "FXMacroData",
                 Description = "How often to call the FXMacroData API. Minimum 1 minute.")]
        public int RefreshMinutes { get; set; }

        [NinjaScriptProperty]
        [Range(6, 24)]
        [Display(Name = "Font Size", Order = 5, GroupName = "FXMacroData",
                 Description = "Panel font size in points.")]
        public int FontSize { get; set; }
    }
}