using CMS_CORE_Library.Models;
using System.Collections.Generic;
using System.Linq;
using System.Web.Http;
using Thermo.Active.Model.DTOModels.Scada;
using Thermo.Active.NC;
using Thermo.Active.Utils;
using static CMS_CORE_Library.Models.DataStructures;
using static Thermo.Active.Config.ServerConfig;
using static Thermo.Active.Model.Constants;

namespace Thermo.Active.Controllers.WebApi
{

    [RoutePrefix("api/scada")]
    public class ScadaController : ApiController
    {
        /// <summary>
        /// Oggetto adapter condiviso da WebAPI
        /// </summary>
        protected static NcAdapter ncAdapter = new NcAdapter();

        [Route("list"), HttpGet]
        public IHttpActionResult GetScadaList()
        {
            using (NcAdapter ncAdapter = new NcAdapter())
            {
                return Ok(ConfiguredScadaSchema);
            }
        }

        [Route("subscribe/{scadaId:int}"), HttpGet]
        public IHttpActionResult SubscribeScada(int scadaId)
        {
            // Find schema
            ScadaSchemaModel selectedScadaSchema = ConfiguredScadaSchema
                .Where(x => x.Id == scadaId)
                .FirstOrDefault();

            if (selectedScadaSchema == null)
                return BadRequest();

            ncAdapter.Connect();
            // Read the selected scada data
            CmsError libraryError = ncAdapter.ReadScadaData(selectedScadaSchema, out DTOScadaModel values);
            if (libraryError.IsError())
                return BadRequest(libraryError.localizationKey);

            // Add to the subscriber list
            SubscribedScada.Add(selectedScadaSchema);

            return Ok(values);
        }

        [Route("unsubscribe/{scadaId:int}"), HttpGet]
        public IHttpActionResult UnsubscribeScada(int scadaId)
        {
            // Find scada by id
            ScadaSchemaModel scadaToRemove = SubscribedScada
                .Where(x => x.Id == scadaId)
                .FirstOrDefault();

            if (scadaToRemove == null)
                return BadRequest();
            // Remove from the subiscriber list
            SubscribedScada.Remove(scadaToRemove);

            return Ok();
        }

        [Route("production"), HttpGet]
        public IHttpActionResult GetProductionPageList()
        {
            ncAdapter.Connect();
            CmsError libraryError = ncAdapter.ReadScadasData(ProductionScadaSchema, out List<DTOScadaModel> values);
            if (libraryError.IsError())
                return BadRequest(libraryError.localizationKey);


            ScadaDataAndSchema data = new ScadaDataAndSchema()
            {
                schemes = ProductionScadaSchema,
                values = values
            };

            return Ok(data);
        }

        [Route("write"), HttpPost]
        public IHttpActionResult WriteScadaValue(int scadaId, SCADA_ELEMENT_TYPE elementType, int elementId, object value)
        {

            // Find scada in productions schemas
            ScadaSchemaModel scada = ProductionScadaSchema.Where(x => x.Id == scadaId).FirstOrDefault();
            if (scada == null)
            {
                // Find scada in configured schemas
                scada = ConfiguredScadaSchema.Where(x => x.Id == scadaId).FirstOrDefault();
                if (scada == null)
                    return NotFound();
            }

            string memIndex = "";
            SCADA_MEM_TYPE memType = SCADA_MEM_TYPE.BOOL;

            foreach (var layer in scada.Layers)
            {
                switch (elementType)
                {
                    case SCADA_ELEMENT_TYPE.BUTTON:
                        {
                            // Find button
                            var button = layer.Buttons.Where(x => x.Id == elementId).FirstOrDefault();
                            if (button != null)
                                // Set index 
                                memIndex = button.Status.MemClickIndex;
                        }
                        break;
                    case SCADA_ELEMENT_TYPE.IMAGE:
                        {
                            // Find button
                            var image = layer.Images.Where(x => x.Id == elementId).FirstOrDefault();
                            if (image != null)
                                memIndex = image.Status.MemClickIndex;
                        }
                        break;
                    case SCADA_ELEMENT_TYPE.INPUT:
                        {
                            // Find button
                            var input = layer.Inputs.Where(x => x.Id == elementId).FirstOrDefault();
                            if (input != null)
                            {
                                memIndex = input.Status.MemValueIndex;
                                memType = SupportFunctions.GetMemTypeFromString(input.Status.Type);
                            }
                        }
                        break;
                }
            }

            ncAdapter.Connect();
            if (memIndex == "")
                return BadRequest(INCORRECT_PARAMETERS_ERROR.localizationKey);

            CmsError libraryError = ncAdapter.WriteScada(memIndex, memType, value);
            if (libraryError.IsError())
                return BadRequest(libraryError.localizationKey);

            return Ok();
        }

        public class ScadaDataAndSchema
        {
            public List<ScadaSchemaModel> schemes;
            public List<DTOScadaModel> values;
        }
    }
}