using Microsoft.AspNetCore.Mvc;
using MP.Core.DTO;
using MP.IOC.Data;
using Newtonsoft.Json;
using NLog;
using System.Reflection;

namespace MP.IOC.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class IOBController : ControllerBase
    {
        #region Public Constructors

        public IOBController(IConfiguration configuration, MpDataService DataService)
        {
            _configuration = configuration;
            DService = DataService;
        }

        #endregion Public Constructors

        #region Public Methods

        /// <summary> SALVA x macchina KVP parametro/valore:
        /// GET: api/IOB/addOptPar/SIMUL_03?pName=PZREQ&pValue=1000
        /// </summary> <param name="id"></param> <param name="pName"></param> <param name="pValue"></param>
        [HttpGet("addOptPar/{id}")]
        public async Task<IActionResult> AddOptPar(string id, string pName, string pValue)
        {
            DService.ScriviKeepAlive(id, DateTime.Now);
            try
            {
                DService.AddOptPar4Machine(id, pName, pValue);
                return await GetOptPar(id);
            }
            catch
            {
                return StatusCode(StatusCodes.Status500InternalServerError, "Errore interno | AddOptPar");
            }
        }

        /// <summary>
        ///  GET: IOB/
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        public IActionResult Alive()
        {
            return Ok("OK"); // Restituisce Status 200
        }

        /// <summary>
        /// GET: IOB/enabled/SIMUL_03
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpGet("enabled/{id}")]
        public IActionResult Enabled(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            if (DService.IobInsEnab(id))
            {
                return Ok("OK");
            }
            else
            {
                //return StatusCode(503, "NO");
                return UnprocessableEntity("NO");
            }
        }

        /// <summary>
        /// Recupera COUNTER x macchina:
        /// GET: IOB/getCounter/SIMUL_03
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Il conteggio pezzi o un errore strutturato</returns>
        [HttpGet("getCounter/{id}")]
        public async Task<IActionResult> GetCounter(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            try
            {
                var pzCount = await DService.pzCounter(id);
                return Ok(pzCount);
            }
            catch (Exception exc)
            {
                Log.Error(exc, "Errore durante il recupero del counter per la macchina {MachineId}", id);
                return StatusCode(StatusCodes.Status500InternalServerError, "Errore interno | GetCounter");
            }
        }

        /// <summary>
        /// Recupera COUNTER x macchina dal CONTEGGIO dei TCRecorded:
        ///
        /// GET: IOB/getCounterTCRec/5
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Il conteggio pezzi o un errore strutturato</returns>
        [HttpGet("getCounterTCRec/{id}")]
        public async Task<IActionResult> GetCounterTCRec(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");
            try
            {
                var pzCount = await DService.pzCounterTcAsync(id);
                return Ok(pzCount);
            }
            catch (Exception exc)
            {
                Log.Error(exc, "Errore durante il recupero del counter TC per la macchina {MachineId}", id);
                //return StatusCode(StatusCodes.Status500InternalServerError, "NO");
                return StatusCode(StatusCodes.Status500InternalServerError, "Errore interno | GetCounterTCRec");
            }
        }

        /// <summary>
        /// GET elenco parametri correnti x IOB
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpGet("getCurrObjItems/{id}")]
        public async Task<IActionResult> GetCurrObjItems(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");

            var rawData = await DService.MachineParamListAsync(id);
            List<ObjItemDTO> actValues = new List<ObjItemDTO>();
            // ordino!
            actValues = rawData
                        .OrderBy(x => x.displOrdinal)
                        .ThenBy(x => x.description)
                        .ToList();
            return Ok(actValues);
        }

        /// <summary>
        /// Recupera ODL corrente x macchina:
        /// GET: IOB/getCurrODL/SIMUL_03
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpGet("getCurrODL/{id}")]
        public async Task<IActionResult> GetCurrODL(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");
            try
            {
                var odl = await DService.GetCurrOdlAsync(id);
                return Ok($"{odl}");
            }
            catch (Exception exc)
            {
                Log.Error(exc, "Errore GetCurrODL | macchina {MachineId}", id);
                return StatusCode(StatusCodes.Status500InternalServerError, "NO");
                //return StatusCode(StatusCodes.Status500InternalServerError, "Errore interno | GetCurrODL");
            }
        }

        /// <summary>
        /// Restituisce data-ora inizio dell'odl correntemente in lavorazione sulla macchina...
        /// es: http://url_site/MP/IO/IOB/getCurrOdlStart/SIMUL_03
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpGet("getCurrOdlStart/{id}")]
        public async Task<IActionResult> GetCurrOdlStart(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");

            DateTime answ = new DateTime(DateTime.Now.Year - 1, 12, 31);
            // chiamo metodo redis/db...
            try
            {
                var odlData = await DService.OdlCurrByMaccAsync(id);
                if (odlData != null && odlData.DataInizio.HasValue)
                {
                    answ = odlData.DataInizio.Value;
                }
            }
            catch (Exception exc)
            {
                Log.Error($"Eccezione in recupero getCurrOdlStart{Environment.NewLine}{exc}");
                return StatusCode(StatusCodes.Status500InternalServerError, "NO");
            }
            return Ok(answ.ToString("yyyy-MM-dd HH:mm:ss"));
        }

        /// <summary>
        /// Recupera TASK richiesto x macchina:
        /// GET: IOB/getOptPar/SIMUL_03
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Json contenente 1..n task da eseguire</returns>
        [HttpGet("getOptPar/{id}")]
        public async Task<IActionResult> GetOptPar(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");
            string answ = "";
            // scrivo keep alive!!! (se necessario, altrimenti è in cache...)
            DService.ScriviKeepAlive(id, DateTime.Now);
            try
            {
                // leggo da REDIS eventuale elenco task x macchina...
                Dictionary<string, string> valori = DService.mOptParMacchina(id);
                answ = JsonConvert.SerializeObject(valori);
            }
            catch
            { }
            return Ok(answ);
        }

        /// <summary>
        /// Recupera TASK richiesto x macchina:
        /// GET: IOB/getTask2Exe/SIMUL_03
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Json contenente 1..n task da eseguire</returns>
        [HttpGet("getTask2Exe/{id}")]
        public async Task<IActionResult> GetTask2Exe(string id)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");

            string answ = "";
            DService.ScriviKeepAlive(id, DateTime.Now);
            // leggo da REDIS eventuale elenco task x macchina...
            Dictionary<string, string> valori = await DService.GetTask2ExeMacchinaAsync(id);
            answ = JsonConvert.SerializeObject(valori);
            return Ok(answ);
        }

        /// <summary>
        /// Metodo di dichiarazione "improprio" tramite get call totalmetne definita da URL
        /// GET: IOB/input/SIMUL_03?valore=3&dtEve=20181206180600000&dtCurr=20181206180600000&cnt=999
        /// </summary>
        /// <param name="id"></param>
        /// <param name="valore"></param>
        /// <param name="dtEve"></param>
        /// <param name="dtCurr"></param>
        /// <param name="cnt"></param>
        /// <returns></returns>
        [HttpGet("input/{id}")]
        public async Task<IActionResult> Input(string id, string valore, string dtEve, string dtCurr, string cnt)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            string answ = "";
            if (cnt == null)
            {
                cnt = "0";
            }

            DateTime dataOraEvento = DateTime.Now;
            try
            {
                answ = DService.processInput(id, valore, dtEve, dtCurr, cnt);
                return Ok(answ);
            }
            catch (Exception exc)
            {
                Log.Error($"Errore in processInput{Environment.NewLine}{exc}");
                return StatusCode(StatusCodes.Status500InternalServerError, "NO");
            }
        }

        /// <summary>
        /// SALVA in blocco un incremento pezzi x macchina restituendo il valore appena inviato o,
        /// se mancasse chaive redis, del valore da DB
        ///
        /// GET: IOB/savePzCountInc/5?qty=10
        /// </summary>
        /// <param name="id">codice macchina</param>
        /// <param name="qty">num peziz da salvare in blocco</param>
        /// <returns></returns>
        [HttpGet("savePzCountInc/{id}")]
        public async Task<IActionResult> SavePzCountInc(string id, string qty)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");

            string answ = "";
            DateTime dataOraEvento = DateTime.Now;
            // salvo SEMPRE log x questo tipo di dati!
            Log.Info($"Salvataggio incremento contapezzi | id: {id} | pezzi: {qty}");
            try
            {
                answ = await DService.saveCaricoPezzi(id, qty);
                return Ok(answ);
            }
            catch (Exception exc)
            {
                Log.Error($"Errore in savePzCountInc{Environment.NewLine}{exc}");
                return StatusCode(StatusCodes.Status500InternalServerError, "NO");
            }
        }

        /// <summary>
        /// SALVA Counter x macchina restituendo il valore appena inviato o, se mancasse chiave
        /// redis, del valore da DB
        ///
        /// GET: IOB/setCounter/5?counter=10
        /// </summary>
        /// <param name="id">cod macchina</param>
        /// <param name="counter">contapezzi da salvare</param>
        /// <returns></returns>
        [HttpGet("setCounter/{id}")]
        public async Task<IActionResult> SetCounter(string id, string counter)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");

            string answ = "-1";
            DateTime dataOraEvento = DateTime.Now;
            Log.Debug($"Salvataggio counter | id: {id} | pzCount: {counter}");

            answ = DService.saveCounter(id, counter);
            return Ok(answ);
        }

        /// <summary>
        /// Processa una chiamata POST per l'invio di una List Json di UNO O PIU' oggetti objItem
        /// POST: IOB/upsertObjItems/SIMUL_03
        /// </summary>
        /// <param name="id">ID dell'IOB</param>
        /// <returns></returns>
        [HttpPost("upsertObjItems/{id}")]
        public async Task<IActionResult> UpsertObjItems(string id, [FromBody] List<ObjItemDTO> innovazioni)
        {
            if (string.IsNullOrEmpty(id)) return BadRequest("Missing ID");

            // Multi: gestione carattere "|" trasformato in "#"
            id = id.Replace("|", "#");
            string answ = "NA";

            try
            {
                // se != null --> salvo!
                if (innovazioni != null)
                {
                    // salvo
                    bool fatto = await DService.MachineParamUpsertAsync(id, innovazioni);
                    answ = "OK";
                }
            }
            catch (Exception exc)
            {
                Log.Error($"Errore in upsertObjItems{Environment.NewLine}{exc}");
                return StatusCode(StatusCodes.Status500InternalServerError, "NO");
            }
            return Ok(answ);
        }

        /// <summary>
        /// Verifica versione corrente REST API
        /// </summary>
        /// <returns></returns>
        [HttpGet("version")]
        public IActionResult Version()
        {
            var version = Assembly
                .GetExecutingAssembly()
                .GetName()
                .Version?
                .ToString() ?? "unknown";

            return Ok(version);
        }

        #endregion Public Methods

        #region Private Fields

        private static IConfiguration _configuration = null!;

        private static Logger Log = LogManager.GetCurrentClassLogger();

        #endregion Private Fields

        #region Private Properties

        /// <summary>
        /// Dataservice x accesso DB
        /// </summary>
        private MpDataService DService { get; set; }

        #endregion Private Properties
    }
}