using EgwCoreLib.Lux.Core;
using EgwCoreLib.Lux.Core.Generic;
using EgwCoreLib.Lux.Data.DbModel.Sales;
using EgwCoreLib.Lux.Data.Services;
using EgwCoreLib.Lux.Data.Services.Sales;
using Microsoft.AspNetCore.Components;

namespace Lux.UI.Components.Compo
{
    /// <summary>
    /// Componente per la gestione delle offerte.
    /// </summary>
    public partial class OfferMan
    {
        #region Public Properties

        /// <summary>
        /// Modello dell'offerta corrente (bindato dal genitore).
        /// </summary>
        [Parameter]
        public OfferModel CurrRecord { get; set; } = null!;

        /// <summary>
        /// Evento che indica variazione rispetto ai dati originali
        /// </summary>
        [Parameter]
        public EventCallback<EditStepDto> EC_Changed { get; set; }

        /// <summary>
        /// Callback invocato a richiesta cancel editing della finestra
        /// </summary>
        [Parameter]
        public EventCallback<bool> EC_Cancel { get; set; }

        /// <summary>
        /// Callback invocato alla richiesta di salvataggio con l'offerta aggiornata.
        /// </summary>
        [Parameter]
        public EventCallback<OfferModel> EC_Updated { get; set; }

        #endregion Public Properties

        #region Protected Methods

        /// <summary>
        /// Chiamato automaticamente all'inizializzazione del componente.
        /// </summary>
        protected override async Task OnInitializedAsync()
        {
            setOriginal();
            await ReloadData();
            await base.OnInitializedAsync();
        }

        protected override void OnParametersSet()
        {
            setOriginal();
        }

        #endregion Protected Methods

        #region Private Fields

        /// <summary>
        /// Lista di tutti i clienti caricati.
        /// </summary>
        private List<CustomerModel> CustomersList = new List<CustomerModel>();

        private List<DealerModel> DealersList = new List<DealerModel>();
        private OfferModel? OrigRecord = null;

        #endregion Private Fields

        #region Private Properties

        [Inject]
        private ICustomerService CService { get; set; } = null!;

        /// <summary>
        /// Servizi di accesso ai dati iniettati dal framework.
        /// </summary>
        [Inject]
        private DataLayerServices DLService { get; set; } = null!;

        [Inject]
        private IDealerService DService { get; set; } = null!;

        #endregion Private Properties

        #region Private Methods

        private Task DoCancel()
        {
            return EC_Cancel.InvokeAsync(true);
        }

        private Task DoSave()
        {
            // richiesta update con salvataggio record
            return EC_Updated.InvokeAsync(CurrRecord);
        }

        private bool HasChanged()
        {
            bool answ = false;
            if (OrigRecord != null && CurrRecord != null)
            {
                if (IsChanged(OrigRecord.CustomerID, CurrRecord.CustomerID))
                    return true;
                if (IsChanged(OrigRecord.DealerID, CurrRecord.DealerID))
                    return true;
                if (IsChanged(OrigRecord.OffertState, CurrRecord.OffertState))
                    return true;
                if (IsChanged(OrigRecord.Inserted, CurrRecord.Inserted))
                    return true;
                if (IsChanged(OrigRecord.ValidUntil, CurrRecord.ValidUntil))
                    return true;
                if (IsChanged(OrigRecord.Description, CurrRecord.Description))
                    return true;
            }
            return answ;
        }

        /// <summary>
        /// Verifica variazione tramite helper
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="original"></param>
        /// <param name="edited"></param>
        /// <returns></returns>
        private bool IsChanged<T>(T original, T edited) => CloneExtensions.IsChanged(original, edited);

        private async Task ReloadData()
        {
            CustomersList = await CService.GetAllAsync();
            DealersList = await DService.GetAllAsync();
        }

        private void setOriginal()
        {
            if (CurrRecord != null && OrigRecord == null)
            {
                OrigRecord = CurrRecord.DeepClone();
            }
        }

        #endregion Private Methods
    }
}