using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using Weee.DAL;
using Weee.Models;

namespace Weee.Service
{
    public class MaterialC3EmissionDataService : WeeeLCADataService
    {
        public MaterialC3EmissionDataService(WeeeDataContext db)
        : base(db)
        {
        }

        public IQueryable<LCARiskAssmtSurveyForm_MaterialC3Emission> GetList(int LCAID)
        {
            if (!AuthorizedLCAs.Contains(LCAID)) throw new Exception("not authorized");
            return _db.Set<LCARiskAssmtSurveyForm_MaterialC3Emission>().Where(x => x.LCAID == LCAID)
                .OrderByDescending(x => x.ID);
        }

        public LCARiskAssmtSurveyForm_MaterialC3Emission GetByLcaIdMaterialNo(int LCAID, string MaterialNo)
        {
            if (!AuthorizedLCAs.Contains(LCAID)) throw new Exception("not authorized");
            var ret = _db.Set<LCARiskAssmtSurveyForm_MaterialC3Emission>()
                .Where(x => x.LCAID == LCAID && x.MaterialNo == MaterialNo)
                .FirstOrDefault();
            return ret;
        }

        public Dictionary<string, string> MaterialNoLst(int LCAID)
        {
            //if (!AuthorizedLCAs.Contains(LCAID)) throw new Exception("not authorized");
            var qry = (from a in _db.LCARiskAssmtSurveyForm_MaterialC3Emissions
                       where a.LCAID==LCAID && a.MaterialNo != null
                       orderby a.MaterialNo
                       select a).ToList()
                       .Select(x=>new { ID=x.ID, MaterialNo=x.MaterialNo })
                       .ToDictionary(x => x.ID.ToString(), x => x.MaterialNo);
                       //select new
                       //{
                       //    Key = a.MaterialNo,
                       //    Value = a.MaterialNo
                       //}).ToDictionary(x=>x.Key, x=>x.Value);

            //a.MaterialNo).AsQueryable();
            //Dictionary<string, string> ret = new Dictionary<string, string>();
            //foreach (var item in qry)
            //    ret.Add(item, item);
            return qry;// ret;
             //_db.Set<LCARiskAssmtSurveyForm_MaterialC3Emission>().Where(x => x.LCAID == LCAID)
             //   .OrderByDescending(x => x.ID);
        }

        public LCARiskAssmtSurveyForm_MaterialC3Emission Save(LCARiskAssmtSurveyForm_MaterialC3Emission toBeSave)
        {
            var user = GetUserContext();

            //if (!AuthorizedLCAs.Contains(toBeSave.LCAID)) 
            //    throw new Exception("not authorized");
            if (string.IsNullOrWhiteSpace(toBeSave.MaterialNo))
                throw new Exception("料號不得為空");
            var entry = _db.Entry(toBeSave);
            if (toBeSave.ID == 0)
            {
                var qry = (from a in _db.LCARiskAssmtSurveyForm_MaterialC3Emissions
                           where a.LCAID == toBeSave.LCAID && a.ID > 0 && a.MaterialNo == toBeSave.MaterialNo
                           select a);
                if (qry.Any())
                {
                    throw new Exception($"料號 {toBeSave.MaterialNo} 已存在！");
                }
                toBeSave.CreatedBy = user.Id;
                toBeSave.CreatedDate = DateTime.Now;
                entry.State = EntityState.Added;
            }
            else
            {
                toBeSave.ModifiedBy = user.Id;
                toBeSave.ModifiedDate = DateTime.Now;
                entry.State = EntityState.Modified;
                entry.Property(x => x.LCAID).IsModified = false;
            }
            _db.SaveChanges();
            return toBeSave;
        }

        public void Delete(int ID)
        {
            var entry = _db.Set<LCARiskAssmtSurveyForm_MaterialC3Emission>().Where(x => x.ID == ID).Single();
            var LCA = GetLCA(entry.LCAID);
            if (LCA.Status != LCAStatus.New && LCA.Status != LCAStatus.Processing) throw new Exception("Business logic error , should not delete data in this status: " + LCA.Status.ToString());

            var ToBeDelete = _db.Entry(entry);
            ToBeDelete.State = EntityState.Deleted;

            _db.SaveChanges();
        }
    }
}