using EgwCoreLib.Lux.Data.DbModel.Items;
using EgwCoreLib.Lux.Data.DbModel.Sales;
using Microsoft.EntityFrameworkCore;
using static EgwCoreLib.Lux.Core.Enums;

namespace EgwCoreLib.Lux.Data.Repository.Sales
{
    public class OrderRowRepository : BaseRepository, IOrderRowRepository
    {
        #region Public Constructors

        public OrderRowRepository(IDbContextFactory<DataLayerContext> ctxFactory) : base(ctxFactory)
        {
        }

        #endregion Public Constructors

        #region Public Methods

        public async Task<bool> AddAsync(OrderRowModel entity)
        {
            await using var dbCtx = await CreateContextAsync();
            await dbCtx.DbSetOrderRow.AddAsync(entity);
            return await dbCtx.SaveChangesAsync() > 0;
        }

        public async Task<bool> DeleteAsync(OrderRowModel entity)
        {
            await using var dbCtx = await CreateContextAsync();

            // Wrap in transaction for atomicity (multi-row update + delete)
            await using var tx = dbCtx.Database.BeginTransaction();
            try
            {
                // 1. Recupero il record da eliminare
                var dbResult = await dbCtx.DbSetOrderRow
                    .FirstOrDefaultAsync(x => x.OrderRowID == entity.OrderRowID);

                if (dbResult == null)
                    return false;

                // 2. Recupero i record successivi da shiftare
                var list2Move = await dbCtx.DbSetOrderRow
                    .Where(x => x.OrderID == entity.OrderID && x.RowNum > dbResult.RowNum)
                    .ToListAsync();

                foreach (var item in list2Move)
                {
                    item.RowNum--;
                    dbCtx.Entry(item).State = EntityState.Modified;
                }

                // 3. Rimuovo il record
                dbCtx.DbSetOrderRow.Remove(dbResult);

                // 4. Salvo tutto
                bool done = await dbCtx.SaveChangesAsync() > 0;

                if (done)
                    tx.Commit();

                return done;
            }
            catch
            {
                tx.Rollback();
                throw;
            }
        }

        public async Task<List<ItemModel>> GetBomItemsAsync()
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetItem
                .Where(x => x.ItemType == ItemClassType.Bom || x.ItemType == ItemClassType.BomAlt)
                .ToListAsync();
        }

        public async Task<OrderRowModel?> GetByIdAsync(int OrderRowId)
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetOrderRow
                                .Include(r => r.SellingItemNav)
                                .FirstOrDefaultAsync(x => x.OrderRowID == OrderRowId);
        }

        public async Task<List<OrderRowModel>> GetByParentAsync(int orderId)
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetOrderRow
                                .Where(x => x.OrderID == orderId)
                                .Include(r => r.SellingItemNav)
                                .AsNoTracking()
                                .ToListAsync();
        }

        public async Task<List<OrderRowModel>> GetByStateAsync(OrderStates reqState, DateTime dtStart, DateTime dtEnd)
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetOrderRow
                                .Where(x => x.OrderRowState == reqState && x.Inserted >= dtStart && x.Inserted <= dtEnd)
                                .Include(r => r.SellingItemNav)
                                .AsNoTracking()
                                .ToListAsync();
        }

        public async Task<List<OrderRowModel>> GetByStateMinAsync(OrderStates reqState, DateTime dtStart, DateTime dtEnd)
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetOrderRow
                                .Where(x => x.OrderRowState >= reqState && x.Inserted >= dtStart && x.Inserted <= dtEnd)
                                .Include(r => r.SellingItemNav)
                                .AsNoTracking()
                                .ToListAsync();
        }

        public async Task<OrderRowModel?> GetByUidAsync(string OrderRowUid)
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetOrderRow
                                .Include(r => r.SellingItemNav)
                                .FirstOrDefaultAsync(x => x.OrderRowUID == OrderRowUid);
        }

        public async Task<List<ItemGroupModel>> GetItemGroupsAsync()
        {
            await using var dbCtx = await CreateContextAsync();
            return await dbCtx.DbSetItemGroup.ToListAsync();
        }

        public async Task<bool> SaveRowsAsync(List<OrderRowModel> rows)
        {
            await using var dbCtx = await CreateContextAsync();

            // Wrap in transaction for atomicity (batch update multiple rows)
            await using var tx = dbCtx.Database.BeginTransaction();
            try
            {
                foreach (var row in rows)
                    dbCtx.Entry(row).State = EntityState.Modified;

                bool done = await dbCtx.SaveChangesAsync() > 0;

                if (done)
                    tx.Commit();

                return done;
            }
            catch
            {
                tx.Rollback();
                throw;
            }
        }

        public async Task<bool> UpdateAsync(OrderRowModel entity)
        {
            await using var dbCtx = await CreateContextAsync();
            // Recuperiamo l'entità tracciata dal context
            var trackedEntity = dbCtx.DbSetOrderRow.Local.FirstOrDefault(x => x.OrderRowID == entity.OrderRowID);

            if (trackedEntity != null)
            {
                // Aggiorna i valori dell'entità tracciata con quelli della nuova
                dbCtx.Entry(trackedEntity).CurrentValues.SetValues(entity);
            }
            else
            {
                dbCtx.DbSetOrderRow.Update(entity);
            }
            return await dbCtx.SaveChangesAsync() > 0;
        }

        #endregion Public Methods
    }
}