using MagData;
using Newtonsoft.Json;
//using SteamWare.IO;
//using SteamWare.Reports;
using SteamWare;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Web.Http;

namespace MP_MAG.Controllers
{
  public class PrintQueueController : ApiController
  {
    #region classi gestione PJQ

    /// <summary>
    /// chaive redis x cache conteggio coda PJQ
    /// </summary>
    public static string redQueueCount = "MP-CTRACK:MAG:PJQ";
    /// <summary>
    /// Conteggio elementi in attesa stsampa da DB
    /// </summary>
    protected int countWaitingDb
    {
      get
      {
        int answ = 0;
        // resetto conteggio in redis...
        DS_Report.PrintJobQueueDataTable nextJob = MagDataLayer.man.taPJQ.getWaiting();
        if (nextJob != null)
        {
          answ = nextJob.Count;
        }
        return answ;
      }
    }
    /// <summary>
    /// Carica i dati richiesti dal report dalla StoredProcedure (filtrando quindi...) e restituisce Dictionary [nome RDS / tab RDS]
    /// </summary>
    /// <param name="tipoReport"></param>
    /// <param name="keyParam">cod UDC</param>
    /// <returns>tabella dati</returns>
    private Dictionary<string, DataTable> caricaDati(reportRichiesto tipoReport, string keyParam)
    {
      Dictionary<string, DataTable> answ = new Dictionary<string, DataTable>();
      DataTable tab = new DataTable();
      switch (tipoReport)
      {
        case reportRichiesto.CartellinoFinitiOdette:
          tab = MagDataLayer.man.taCFOdette.GetData(keyParam);
          answ.Add("stp_prt_CartellinoFinitiOdette", tab);
          break;
        case reportRichiesto.CartellinoPedane:
          tab = MagDataLayer.man.taCPed.GetData(keyParam);
          answ.Add("stp_prt_CartellinoPedane", tab);
          break;
        case reportRichiesto.CartellinoSemilavorati:
          tab = MagDataLayer.man.taCSemil.GetData(keyParam);
          answ.Add("stp_prt_CartellinoSemilavorati", tab);
          break;
        default:
          break;
      }
      return answ;
    }

    /// <summary>
    /// Recupera report da CODA report
    /// </summary>
    /// <param name="queueName"></param>
    /// <returns></returns>
    protected reportRichiesto reportByTemplate(string queueName)
    {
      reportRichiesto report = reportRichiesto.ND;
      var qConf = MagDataLayer.man.queueConfRedis.Find(x => x.name == queueName);
      if (qConf != null)
      {
        // decodifico
        try
        {
          report = (reportRichiesto)Enum.Parse(typeof(reportRichiesto), qConf.template.Replace(".rdlc", ""));
        }
        catch
        { }
      }
      return report;
    }

    #endregion

    #region REST api call

    /// <summary>
    /// Restituisce numero jobs aperti (stato = 0...), se 0 = NESSUNO
    /// GET: api/PrintQueue
    /// </summary>
    /// <returns></returns>
    public int Get()
    {
      // restituisco...
      int answ = 0;
      string redVal = memLayer.ML.getRSV(redQueueCount);
      // cerco in redis se ci sia chiave..
      if (!string.IsNullOrEmpty(redVal))
      {
        // recupero
        int.TryParse(redVal, out answ);
      }
      else
      {
        int ttlPrintCount = memLayer.ML.CRI("ttlPrintCount");
        // recupero da dbe e salvo
        answ = countWaitingDb;
        memLayer.ML.setRSV(redQueueCount, $"{answ}", ttlPrintCount);
      }
      return answ;
    }

    /// <summary>
    /// Elenco dei jobs aperti per la coda indicata
    /// GET: api/PrintQueue/queue_01
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    public List<reportData> Get(string id)
    {
      List<reportData> answ = new List<reportData>();
      // recupero da DB...
      DS_Report.PrintJobQueueDataTable tabPJQ = MagDataLayer.man.taPJQ.getByQueue(id);
      if (tabPJQ.Count > 0)
      {
        reportData currReport = new reportData();
        Dictionary<string, DataTable> currRdsData;
        // ciclo!
        foreach (var pjReq in tabPJQ)
        {
          currRdsData = caricaDati(reportByTemplate(pjReq.printerQueue), pjReq.keyParam);
          // in base alla coda --> recupero i dati
          currReport = new reportData()
          {
            ticketNum = pjReq.IdxPrintJob.ToString(),
            rdsData = currRdsData
          };
          answ.Add(currReport);
        }
      }
      // compongo risposta...
      return answ;
    }

    /// <summary>
    /// Processa una chiamata POST per l'invio in blocco del risultato dell'elaborazione
    /// POST: api/PrintQueue
    /// </summary>
    /// <returns></returns>
    [HttpPost]
    public string Post()
    {
      string answ = "UNKN";
      // questa classe è derivata da Controller.Response... x cui recupero lo stream in altro modo...
      string content = "";
      System.Web.HttpContext.Current.Request.InputStream.Position = 0;
      using (var reader = new StreamReader(System.Web.HttpContext.Current.Request.InputStream, System.Text.Encoding.UTF8, true, 4096, true))
      {
        content = reader.ReadToEnd();
      }
      //Rest
      System.Web.HttpContext.Current.Request.InputStream.Position = 0;
      // procedo a deserializzare in blocco l'oggetto...
      try
      {
        // deserializzo.
        printTask printAnsw = JsonConvert.DeserializeObject<printTask>(content);
        // verifico se mi abbia dato esito 1 --> aggiorno DB!
        if (printAnsw != null)
        {
          int idxPJQ = 0;
          int.TryParse(printAnsw.ticketNum, out idxPJQ);
          MagDataLayer.man.taPJQ.updateStato(idxPJQ, printAnsw.newStatus);
          // resetto conteggio in redis...
          memLayer.ML.setRSV(redQueueCount, countWaitingDb.ToString(), 30);
          answ = "OK";
        }
      }
      catch
      { }
      // restituisco esito!
      return answ;
    }

    #endregion

  }
}