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 ItemDeliveryDataService : WeeeLCADataService
    {
        public ItemDeliveryDataService(WeeeDataContext db)
        : base(db)
        {
        }

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

        public LCARiskAssmtSurveyForm_ItemDelivery Save(LCARiskAssmtSurveyForm_ItemDelivery toBeSave)
        {
            CheckMaterialNo(toBeSave);

            var user = GetUserContext();

            if (!AuthorizedLCAs.Contains(toBeSave.LCAID)) throw new Exception("not authorized");
            var entry = _db.Entry(toBeSave);
            if (toBeSave.ID == 0)
            {
                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;
        }

        private void CheckMaterialNo(LCARiskAssmtSurveyForm_ItemDelivery toBeSave)
        {
            if (_db.Set<LCARiskAssmtSurveyForm_ItemDelivery>().Any(i => i.LCAID == toBeSave.LCAID && i.MaterialNo == toBeSave.MaterialNo && (toBeSave.ID == 0 || toBeSave.ID != i.ID)))
            {
                throw new Exception($"同盤查單號不得重複：{nameof(toBeSave.MaterialNo)}");
            }

            if (_db.Set<LCARiskAssmtSurveyForm_ItemDelivery>().Any(i => i.LCAID == toBeSave.LCAID && i.ModelName == toBeSave.ModelName && (toBeSave.ID == 0 || toBeSave.ID != i.ID)))
            {
                throw new Exception($"同盤查單號不得重複：{nameof(toBeSave.ModelName)}");
            }
        }

        public void Delete(int ID)
        {
            var entry = _db.Set<LCARiskAssmtSurveyForm_ItemDelivery>().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();
        }
    }
}