using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore.Metadata.Internal;
using Microsoft.Reporting.NETCore;
using NLog;
using System.Data;
using ToDataTable;
using WebDoorCreator.Core.ReportViewer;
using WebDoorCreator.Data.Services;

namespace WebDoorCreator.API.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class ReportController : ControllerBase
    {
        #region Public Constructors

        public ReportController(IConfiguration configuration, WebDoorCreatorService DataService)
        {
            Log.Info("Starting ReportController");
            _configuration = configuration;
            WDCService = DataService;
            Log.Info("Avviato ReportController");
        }

        #endregion Public Constructors

        #region Public Methods

        // GET: api/Alive
        [HttpGet]
        public string Get()
        {
            return "OK";
        }

        /// <summary>
        /// Restituisce report dato ordine e formato
        /// </summary>
        /// <param name="OrderId">ID univoco ordine</param>
        /// <param name="Format">Formato: PDF/HTML/DOCX/XLSX</param>
        /// <returns></returns>
        [HttpGet("GetOrderReport")]
        public async Task<IActionResult> GetOrderReport(int OrderId, string Format)
        {
            // dato il servizio è impostato il file rdlc e la struttura data DS da passare
            await Task.Delay(1);
            // inizializzo parametri report di default
            Core.ReportViewer.Report.RenderParams currParams = new Core.ReportViewer.Report.RenderParams(Format);
            currParams.FileName= $"DCA-Order-{OrderId:00000000}";

            // restituisco oggetto ReportOrder specifico
            return await OrderReportGet(OrderId, currParams);
        }

        #endregion Public Methods

        #region Private Fields

        private static IConfiguration _configuration = null!;

        private static Logger Log = LogManager.GetCurrentClassLogger();

        #endregion Private Fields

        #region Private Properties

        private WebDoorCreatorService WDCService { get; set; } = null!;

        #endregion Private Properties

        #region Private Methods

#if false
        /// <summary>
        /// Restituisce filestream del report DEMO
        /// </summary>
        /// <param name="FileName">Nome file desiderato x download</param>
        /// <param name="RenderFormat"></param>
        /// <param name="FileExt"></param>
        /// <param name="MimeType"></param>
        /// <returns></returns>
        private IActionResult ReportDemoGet(int OrderId, Core.ReportViewer.Report.RenderParams CurrParams) 
        {
            using (var report = new LocalReport())
            {
                // setup parametri
                List<ReportParameter> RepParams = new List<ReportParameter>();
                RepParams.Add(new ReportParameter("Title", "Invoice 4/2020"));
                // setup DsReport
                Dictionary<string, DataTable> DsDict = new Dictionary<string, DataTable>();
                Random rnd = new Random();
                decimal WidgetPrice = 204.99m;
                decimal GizmoPrice = 2.41m;
                var items = new[] {
                    new ReportItem { Description = "Widget 6000", Price = WidgetPrice, Qty = rnd.Next(1,5) },
                    new ReportItem { Description = "Gizmo MAX", Price = GizmoPrice, Qty = rnd.Next(10,50) },
                    new ReportItem { Description = "Pippo", Price = 1.2m, Qty = rnd.Next(3,9) },
                    new ReportItem { Description = "Paperino", Price = 1.74m, Qty = rnd.Next(5,15) }
                }.ToList();
                var totaQty = items.Sum(x => x.Qty);
                var avgPrice = items.Sum(x => x.Qty * x.Price) / totaQty;
                items.Add(new ReportItem() { Description = "Total", Qty = totaQty, Price = Math.Round(avgPrice, 2) });

                DataTable tabDati = items.ToDataTable();
                tabDati.TableName = "Items";
                // aggiungo dizionario
                DsDict.Add("Items", tabDati);

                // carico dati nel report...
                Core.ReportViewer.Report.Load(report, "Report.rdlc", RepParams, DsDict);
                var rawData = report.Render(CurrParams.RenderFormat);
                return File(rawData, CurrParams.MimeType, $"{CurrParams.FileName}.{CurrParams.Extension}");
            }
        } 
#endif
        /// <summary>
        /// Restituisce filestream del report richiesto
        /// </summary>
        /// <param name="OrderId">ID Ordine</param>
        /// <param name="CurrParams">Parametri rendering report</param>
        /// <returns></returns>
        private async Task<IActionResult> OrderReportGet(int OrderId, Core.ReportViewer.Report.RenderParams CurrParams) 
        {
            using (var report = new LocalReport())
            {
                // setup parametri
                List<ReportParameter> RepParams = new List<ReportParameter>();
                RepParams.Add(new ReportParameter("OrderID", $"{OrderId}"));
                // setup DsReport
                Dictionary<string, DataTable> DsDict = new Dictionary<string, DataTable>();
                // recupero tab dati config...
                var confList = await WDCService.ConfigGetAll();
                DataTable tabDatiConf = confList.ToDataTable();
                tabDatiConf.TableName = "DataSetConfig";
                // aggiungo a dizionario
                DsDict.Add("DataSetConfig", tabDatiConf);

                // recupero dati veri del report...
                var repDetailData = await WDCService.PreRepOrderGetByKey(OrderId);
                DataTable tabDati = repDetailData.ToDataTable();
                tabDati.TableName = "DataSetOrderReportExpl";
                // aggiungo dizionario
                DsDict.Add("DataSetOrderReportExpl", tabDati);

                // carico dati nel report...
                Core.ReportViewer.Report.Load(report, "ReportOrder.rdlc", RepParams, DsDict);
                var rawData = report.Render(CurrParams.RenderFormat);
                return File(rawData, CurrParams.MimeType, $"{CurrParams.FileName}.{CurrParams.Extension}");
            }
        }

        #endregion Private Methods
    }
}