using System;
using System.Collections.Generic;
using System.Linq;
using C1.Web.Mvc.Serialization;
using C1.Web.Mvc;
using Microsoft.AspNetCore.Mvc;
using MultiRowExplorer.Models;
using Microsoft.EntityFrameworkCore;

namespace MultiRowExplorer.Controllers
{
    public partial class MultiRowController : Controller
    {
        //
        // GET: /BatchEditing/

        public ActionResult BatchEditing()
        {
            return View();
        }

        public ActionResult BatchEditing_Bind([C1JsonRequest] CollectionViewRequest<Supplier> requestData)
        {
            return this.C1Json(CollectionViewHelper.Read(requestData, _db.Suppliers.ToList()));
        }

        public ActionResult MultiRowBatchEdit([C1JsonRequest]CollectionViewBatchEditRequest<Supplier> requestData)
        {
            return this.C1Json(CollectionViewHelper.BatchEdit(requestData, batchData =>
            {
                var itemresults = new List<CollectionViewItemResult<Supplier>>();
                string error = string.Empty;
                bool success = true;
                try
                {
                    if (batchData.ItemsCreated != null)
                    {
                        batchData.ItemsCreated.ToList().ForEach(st =>
                        {
                            _db.Suppliers.Add(st);
                            itemresults.Add(new CollectionViewItemResult<Supplier>
                            {
                                Error = "",
                                Success = success,
                                Data = st
                            });
                        });
                    }
                    if (batchData.ItemsDeleted != null)
                    {
                        batchData.ItemsDeleted.ToList().ForEach(supplier =>
                        {
                            _db.Suppliers.Remove(supplier);
                            itemresults.Add(new CollectionViewItemResult<Supplier>
                            {
                                Error = "",
                                Success = success,
                                Data = supplier
                            });
                        });
                    }
                    if (batchData.ItemsUpdated != null)
                    {
                        batchData.ItemsUpdated.ToList().ForEach(supplier =>
                        {
                            _db.Entry(supplier).State = EntityState.Modified;
                            itemresults.Add(new CollectionViewItemResult<Supplier>
                            {
                                Error = "",
                                Success = success,
                                Data = supplier
                            });
                        });
                    }
                    _db.SaveChanges();
                }
                catch (Exception e)
                {
                    error = GetExceptionMessage(e);
                    success = false;
#if RELOAD_ON_ERROR
                    try
                    {
                        var refreshableObjects = _db.ChangeTracker.Entries().Where(c => c.State == EntityState.Modified).ToList();
                        refreshableObjects.ForEach(o => o.Reload());
                    }
                    catch (Exception er)
                    {
                        error = error + Environment.NewLine + er.Message;
                    }
#endif
                }

                return new CollectionViewResponse<Supplier>
                {
                    Error = error,
                    Success = success,
                    OperatedItemResults = itemresults
                };
            }, () => _db.Suppliers.ToList()));
        }

    }
}

@model IEnumerable<Supplier>

@section Styles{
    <style>
        .queryErrorMessage {
            color: #f00;
        }
    </style>
}

@section Scripts{
    <script type="text/javascript">
        var isUpdating = false;

        function batchUpdate() {
            var batchEditMultiRow = wijmo.Control.getControl('#batchEditMultiRow'),
                cv = batchEditMultiRow.collectionView;
            cv.commit();

            var isChanged = (cv.itemsAdded && cv.itemsAdded.length)
                || (cv.itemsRemoved && cv.itemsRemoved.length)
                || (cv.itemsEdited && cv.itemsEdited.length);
            if (isChanged) {
                isUpdating = true;
                setQueryMessage('@Html.Raw(MultiRowRes.BatchEditing_Text12)');
            } else {
                setQueryMessage('@Html.Raw(MultiRowRes.BatchEditing_Text13)');
            }

        }

        function onQueryComplete(sender, e) {
            if (isUpdating) {
                if (e.result.success) {
                    setQueryMessage('@Html.Raw(MultiRowRes.BatchEditing_Text14)');
                } else {
                    setQueryMessage(e.result.error, 'queryErrorMessage');
                }
            }

            isUpdating = false;
        }

        function setQueryMessage(message, className) {
            var element = document.getElementById('queryMessage');
            element.innerHTML = message;
            element.className = className;
        }
    </script>
}

<input type="button" value="@Html.Raw(MultiRowRes.BatchEditing_Text11 )" class="btn" onclick="batchUpdate()" />
<span id="queryMessage"></span>

<c1-multi-row id="batchEditMultiRow" allow-add-new="true" allow-delete="true" class="multirow">
    <c1-items-source disable-server-read="true" read-action-url="@Url.Action("BatchEditing_Bind")"
                     batch-edit-action-url="@Url.Action("MultiRowBatchEdit")" query-complete="onQueryComplete"></c1-items-source>
    <c1-multi-row-cell-group>
        <c1-multi-row-cell binding="SupplierID" is-read-only="true" format="d" align="center"></c1-multi-row-cell>
    </c1-multi-row-cell-group>
    <c1-multi-row-cell-group colspan="2">
        <c1-multi-row-cell binding="CompanyName" colspan="2"></c1-multi-row-cell>
        <c1-multi-row-cell binding="ContactName" width="150"></c1-multi-row-cell>
        <c1-multi-row-cell binding="ContactTitle" width="200"></c1-multi-row-cell>
    </c1-multi-row-cell-group>
    <c1-multi-row-cell-group colspan="3">
        <c1-multi-row-cell binding="Country"></c1-multi-row-cell>
        <c1-multi-row-cell binding="Region"></c1-multi-row-cell>
        <c1-multi-row-cell binding="City"></c1-multi-row-cell>
        <c1-multi-row-cell binding="Address" colspan="3"></c1-multi-row-cell>
    </c1-multi-row-cell-group>
</c1-multi-row>

@section Summary{
    @Html.Raw(MultiRowRes.BatchEditing_Text10)
}

@section Description{
    <p>@Html.Raw(MultiRowRes.BatchEditing_Text0)</p>

    <p>@Html.Raw(MultiRowRes.BatchEditing_Text1)</p>

    <p>@Html.Raw(MultiRowRes.BatchEditing_Text2)</p>
    <h4>@Html.Raw(MultiRowRes.BatchEditing_Text8)</h4>
    <p>@Html.Raw(MultiRowRes.BatchEditing_Text3)</p>
    <p>@Html.Raw(MultiRowRes.BatchEditing_Text4)</p>

    <h4>@Html.Raw(MultiRowRes.BatchEditing_Text9)</h4>
    <p>@Html.Raw(MultiRowRes.BatchEditing_Text5)</p>

    <p>@Html.Raw(MultiRowRes.BatchEditing_Text6)</p>
    <p>@Html.Raw(MultiRowRes.BatchEditing_Text7)</p>

}