using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using Weee.Models;
using Weee.Service;
using Weee.DAL;
using Weee.Models.ExtensionMethods;
using Weee.Filter;
using Microsoft.AspNet.Identity;

namespace Weee.Controllers
{
    public class SteamUsageController : ApiControllerBase
    {
        private readonly WeeeMonthlyDataService service;
        private readonly WeeeParameterDataService parameterservice;
        private readonly WeeeDataContext _db;
        private WeeeLCADataService serviceLCA;

        public SteamUsageController(WeeeMonthlyDataService d, WeeeParameterDataService s
            , WeeeDataContext db, WeeeLCADataService serviceLCA)
            : base(d)
        {
            service = d;
            parameterservice = s;
            _db = db;
            this.serviceLCA = serviceLCA;
        }

        [Route("api/SteamUsage/GetSteamUsages/{LCAID}")]
        //[Filter.ApiMultilanguage]disable obsolete warning, not sure OK or not
        public object Get(int LCAID)
        {
            LCA lca = service.GetLCA(LCAID);
            object ret = new 
            {
                SteamUsages = service.GetSheet<LCACommonSurveyForm_SteamUsages>(LCAID),
                // 檢查目前的盤查是否為產品型，用於讀取不同的係數
                options = parameterservice.GetYearlyParameterOptions((lca.LCAType.Name == "ProductLCA") ? Models.Paramemter.Categories.SteamProduct : Models.Paramemter.Categories.Steam),
                SheetHeader = service.GetSheetHeader(LCAID, (lca.LCAType.Name == "ProductLCA") ? Models.Paramemter.Categories.SteamProduct : Models.Paramemter.Categories.Steam),
                ActivityOptions = activityItems,
                EmitParaOptions = emitParaItems,
                factor = parameterservice.LCAID2steamPara(LCAID)
            };
            //if (ret.Str)
            return ret;
        }

        [Route("api/SteamUsage/SaveSheetHeader")]
        [HttpPost]
        public HttpResponseMessage SaveHeader(SheetHeader header)
        {
            return this.SaveSheetHeader(service, Weee.Models.Paramemter.Categories.Steam, header);
        }

        [Route("api/SteamUsage/SaveSteamUsages/{LCAID}/{activity}/{emitPara}")]
        [HttpPost]
        [ApiEditableAttribute("ToBeSave", true)]
        public object SaveAll(int LCAID, int activity, int emitPara, 
            IEnumerable<LCACommonSurveyForm_SteamUsages> ToBeSave)
        {
            if (!ModelState.IsValid)
            {
                throw new Exception("error");
            }
            if (ToBeSave == null || ToBeSave.Count() == 0) 
                return null;
            serviceLCA.Initialize(User.Identity.GetUserId());
            LCA lca = serviceLCA.GetLCA(LCAID);
            lca.activityDataTypePowerUsage = (ActivityDataType)activity;
            lca.emitParaTypePowerUsage = (EmitParaType)emitPara;
            _db.SaveChanges();
            //OrganizationLCA orgLCA = serviceLCA.GetOrganizationLCA(LCAID);
            //orgLCA.activityDataTypeSteamUsage = (ActivityDataType)activity;
            //orgLCA.emitParaTypeSteamUsage = (EmitParaType)emitPara;
            //serviceLCA.SaveOrganizationLCA(orgLCA);
            var parameterIDs = ToBeSave
                               .Select(x => x.ParameterID)
                               .Where(x => x != null)
                               .Distinct()
                               .Cast<int>();
            var parameters = _db.Parameters
                                .Where(x => parameterIDs.Contains(x.ID))
                                .Select(x => new { x.ID, x.Value });
            foreach (var item in ToBeSave)
            {
                item.ID = 0;
                item.Scalar = Math.Round(item.Scalar, 4);
                if (item.Factor != null)
                {
                    item.Factor = Math.Round((decimal)item.Factor, 10);
                    item.UpdateKgCO2e(item.Factor.Value);
                }
                else if (item.ParameterID != null)
                    item.UpdateKgCO2e(parameters.First(x => x.ID == item.ParameterID).Value);
                else
                    item.KgCO2e = 0;
            }
            service.DeleteSheet<LCACommonSurveyForm_SteamUsages>(ToBeSave.First().LCAID);
            var result = service.SaveSheet(ToBeSave);
            return new { result = result };
        }
        //[Route("api/SteamUsage/GetCoeff/{LCAID}/{id}")]
        ////[HttpPost]
        //public object GetCoeff(int LCAID, int id)
        //{
        //    object ret = null;
        //    var qry = (from a in _db.Parameters
        //               where a.ID==id
        //               select a.Value).FirstOrDefault();
        //    if (qry != null)
        //        ret = qry;
        //    return ret;
        //}
        //[Route("api/SteamUsage/SaveSteamUsage/{LCAID}/{id}")]
        //[HttpPost]
        //public int Save(int LCAID, int id, SteamUsage steamusage)
        //{
        //    if (!ModelState.IsValid) { return -1; }
        //    if (id != steamusage.ID || LCAID != steamusage.LCAID) { return -1; }
        //    service.SaveMonthlyData(steamusage);

        //    return steamusage.ID;
        //}

        //[Route("api/SteamUsage/DeleteSteamUsages/{LCAID}")]
        //[HttpDelete]
        //public IHttpActionResult DeleteAll(int LCAID)
        //{
        //    service.DeleteSheet<SteamUsage>(LCAID);
        //    return Ok();
        //}
    }
}