@namespace OpenArchival.Blazor.AdminPages
@using Microsoft.AspNetCore.Components.Web
@using MudBlazor
@using MudExtensions
@using OpenArchival.DataAccess

<MudDataGrid 
    T="ArtifactGroupingRowElement" 
    MultiSelection=true 
    Filterable=false
    SelectOnRowClick=true
    ServerData="new Func<GridState<ArtifactGroupingRowElement>, Task<GridData<ArtifactGroupingRowElement>>>(ServerReload)"
    @key=@ArtifactGroupingRows
    @ref=@DataGrid>

    <ToolBarContent>
        <MudButton 
            Variant="Variant.Filled" 
            StartIcon="@Icons.Material.Filled.Delete" 
            Color="Color.Error"
            OnClick="OnDeleteClicked">Delete</MudButton>
    </ToolBarContent>
    
    <Columns>
        <SelectColumn T="ArtifactGroupingRowElement"/>
                
        <PropertyColumn 
            Title="Id"
            Property="x=>x.ArtifactGroupingIdentifier"
            Filterable="false"/>

        <PropertyColumn 
            Title="Category"
            Property="x=>x.CategoryName"
            Filterable="false"/>

        <PropertyColumn 
            Title="Title"
            Property="x=>x.Title"
            Filterable="false"/>

        <PropertyColumn 
            Title="Publically Visible"
            Property="x=>x.IsPublicallyVisible"
            Filterable="false"/>

        <TemplateColumn Title="Edit"> 
            <CellTemplate>
                <MudIconButton 
                    Color="Color.Primary"
                    Icon="@Icons.Material.Filled.Edit" 
                    Variant="Variant.Filled"
                    OnClick="() => OnRowEditClick(context.Item)">Edit</MudIconButton>
            </CellTemplate>
        </TemplateColumn>

    </Columns>

    <PagerContent>
        <MudDataGridPager T="ArtifactGroupingRowElement"/>
    </PagerContent>
</MudDataGrid>


@inject IArtifactGroupingProvider GroupingProvider;
@inject IDialogService DialogService;
@inject IArtifactGroupingProvider GroupingProvider;
@inject ArtifactEntrySharedHelpers Helpers;

@code 
{
    public List<ArtifactGroupingRowElement> ArtifactGroupingRows { get; set; } = new();

    public MudDataGrid<ArtifactGroupingRowElement> DataGrid { get; set; } = default!;

    protected override async Task OnInitializedAsync()
    {
        // Load inital data
        List<ArtifactGrouping> groupings = await GroupingProvider.GetGroupingsPaged(1, 25);
        SetGroupingRows(groupings);

        await base.OnInitializedAsync();
        StateHasChanged();
    }

    private void SetGroupingRows(IEnumerable<ArtifactGrouping> groupings)
    {
        ArtifactGroupingRows.Clear();

        foreach (var grouping in groupings)
        {
            ArtifactGroupingRows.Add(new ArtifactGroupingRowElement()
                {
                    ArtifactGroupingIdentifier=grouping.ArtifactGroupingIdentifier ?? throw new ArgumentNullException(nameof(grouping), "Got a null grouping identifier"), 
                    CategoryName=grouping.Category.Name,
                    Title=grouping.Title,
                    IsPublicallyVisible=grouping.IsPublicallyVisible,
                    Id=grouping.Id
                }
            );        
        } 
    }

    private async Task OnRowEditClick(ArtifactGroupingRowElement row)
    {
        var parameters = new DialogParameters();

        var model = await GroupingProvider.GetGroupingAsync(row.Id); 

        parameters.Add("Model", ArtifactGroupingValidationModel.ToValidationModel(model));

        var options = new DialogOptions()
        {
            MaxWidth = MaxWidth.ExtraExtraLarge,
            FullWidth = true
        };

        var dialog = await DialogService.ShowAsync<AddGroupingDialog>("Edit Grouping", parameters, options);

        var result = await dialog.Result;

        if (result is not null && !result.Canceled)
        {
            var validationModel = (ArtifactGroupingValidationModel)result.Data!;

            await Helpers.OnGroupingPublished(validationModel);            

            await DataGrid.ReloadServerData(); 
        }
    }

    private async Task OnDeleteClicked(MouseEventArgs args)
    {
        HashSet<ArtifactGroupingRowElement> selected = DataGrid.SelectedItems;

        bool? confirmed = await DialogService.ShowMessageBox
        (
            new MessageBoxOptions(){
            Message=$"Are you sure you want to delete {selected.Count} groupings?", 
            Title="Delete Groupings", 
            CancelText="Cancel", 
            YesText="Delete"
        });

        if (confirmed is not null && (confirmed ?? throw new ArgumentNullException("confirmed was null")))
        {
            foreach (var grouping in selected)
            {
                await GroupingProvider.DeleteGroupingAsync(grouping.Id);
                StateHasChanged();
            }
        }
    }

    private async Task<GridData<ArtifactGroupingRowElement>> ServerReload(GridState<ArtifactGroupingRowElement> state)
    {
        int totalItems = await GroupingProvider.GetTotalCount();

        IEnumerable<ArtifactGrouping> groupings = await GroupingProvider.GetGroupingsPaged(state.Page + 1, state.PageSize);

        var pagedItems = groupings.Select(grouping => new ArtifactGroupingRowElement()
        {
            Id = grouping.Id,
            Title = grouping.Title,
            ArtifactGroupingIdentifier = grouping.ArtifactGroupingIdentifier ?? throw new ArgumentNullException(nameof(grouping), "Got a null ArtifactGroupingIdentifier"),
            CategoryName = grouping.Category.Name,
            IsPublicallyVisible = grouping.IsPublicallyVisible,
        });

        return new GridData<ArtifactGroupingRowElement>()
            {
                TotalItems = totalItems,
                Items = pagedItems
            };
    }
}