using System;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using System.Linq;
using AyaNova.Util;
using AyaNova.Api.ControllerHelpers;
using AyaNova.Models;
using Newtonsoft.Json.Linq;
using System.Collections.Generic;

namespace AyaNova.Biz
{
    internal class PartInventoryRequestDataListBiz : BizObject, IReportAbleObject, IExportAbleObject
    {
        internal PartInventoryRequestDataListBiz(AyContext dbcontext, long currentUserId, long userTranslationId, AuthorizationRoles UserRoles)
        {
            ct = dbcontext;
            UserId = currentUserId;
            UserTranslationId = userTranslationId;
            CurrentUserRoles = UserRoles;
            BizType = AyaType.PartInventoryRequestDataList;
        }

        internal static PartInventoryRequestDataListBiz GetBiz(AyContext ct, Microsoft.AspNetCore.Http.HttpContext httpContext = null)
        {
            if (httpContext != null)
                return new PartInventoryRequestDataListBiz(ct, UserIdFromContext.Id(httpContext.Items), UserTranslationIdFromContext.Id(httpContext.Items), UserRolesFromContext.Roles(httpContext.Items));
            else
                return new PartInventoryRequestDataListBiz(ct, 1, ServerBootConfig.AYANOVA_DEFAULT_TRANSLATION_ID, AuthorizationRoles.BizAdmin);
        }




        ////////////////////////////////////////////////////////////////////////////////////////////////
        //REPORTING
        //
        public async Task<JArray> GetReportData(DataListSelectedRequest dataListSelectedRequest)
        {
            var idList = dataListSelectedRequest.SelectedRowIds;
            JArray ReportData = new JArray();
            while (idList.Any())
            {
                var batch = idList.Take(IReportAbleObject.REPORT_DATA_BATCH_SIZE);
                idList = idList.Skip(IReportAbleObject.REPORT_DATA_BATCH_SIZE).ToArray();
                //query for this batch, comes back in db natural order unfortunately
                var batchResults = await ct.ViewPartInventoryRequestList.AsNoTracking().Where(z => batch.Contains(z.RequestId)).ToArrayAsync();
                //order the results back into original
                var orderedList = from id in batch join z in batchResults on id equals z.RequestId select z;

                //cache frequent viz data
                var AyaTypesEnumList = await AyaNova.Api.Controllers.EnumListController.GetEnumList(
                    StringUtil.TrimTypeName(typeof(AyaType).ToString()),
                    UserTranslationId,
                    CurrentUserRoles);
                // using (var command = ct.Database.GetDbConnection().CreateCommand())
                // {
                //     ct.Database.OpenConnection();

                foreach (ViewPartInventoryRequestList w in orderedList)
                {
                    //await PopulateVizFields(w, AyaTypesEnumList, command);
                    var jo = JObject.FromObject(w);
                    ReportData.Add(jo);
                }
                //}
            }
            return ReportData;
        }

        // //populate viz fields from provided object
        // private async Task PopulateVizFields(VPartInventoryList o, List<NameIdItem> ayaTypesEnumList, System.Data.Common.DbCommand cmd)
        // {
        //     o.PartViz = await ct.Part.AsNoTracking().Where(x => x.Id == o.PartId).Select(x => x.PartNumber).FirstOrDefaultAsync();
        //     o.PartWarehouseViz = await ct.PartWarehouse.AsNoTracking().Where(x => x.Id == o.PartWarehouseId).Select(x => x.Name).FirstOrDefaultAsync();
        //     if (o.SourceType != null)
        //         o.SourceTypeViz = ayaTypesEnumList.Where(x => x.Id == (long)o.SourceType).Select(x => x.Name).First();
        //     if (o.SourceType != null && o.SourceId != null)
        //         o.SourceViz = BizObjectNameFetcherDirect.Name((AyaType)o.SourceType, (long)o.SourceId, cmd);

        // }

        ////////////////////////////////////////////////////////////////////////////////////////////////       
        // IMPORT EXPORT
        //
        public async Task<JArray> GetExportData(DataListSelectedRequest dataListSelectedRequest)
        {
            //for now just re-use the report data code
            //this may turn out to be the pattern for most biz object types but keeping it seperate allows for custom usage from time to time
            return await GetReportData(dataListSelectedRequest);
        }






        /////////////////////////////////////////////////////////////////////

    }//eoc


}//eons