@using Rms.Risk.Mango.Pivot.Core
@using Rms.Risk.Mango.Pivot.Core.Models

@*
 *                                dbMango
 *
 * Copyright 2025 Deutsche Bank AG
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *@

<FilterComponent 
    Class="@Class"
    RowClass="@RowClass"
    AllFields="@AllFields"
    @bind-Filter="Filter"
    />

@code {

    [Parameter] public string                   Class      { get; set; } = "";
    [Parameter] public string                   RowClass   { get; set; } = "";
    [Parameter] public Dictionary<string, Type> AllFields  { get; set; } = null!;

    [Parameter]
    public PivotDefinition? Pivot
    {
        get;
        set
        {
            if (field == value)
                return;
            field = value;

            Filter = string.IsNullOrWhiteSpace(Pivot?.Filter) 
                    ? new() 
                    : FilterExpressionTree.ParseJson(Pivot.Filter)
                ;

            InvokeAsync(StateHasChanged);
        }
    }

    [Parameter] public EventCallback<string> FilterChanged { get; set; }

    private FilterExpressionTree.ExpressionGroup Filter
    {
        get;
        set 
        {
            field = value;
            InvokeAsync(UpdateFilter);
        }
    } = new();

    private async Task UpdateFilter()
    {
        if (Pivot == null)
            return;

        try
        {
            Pivot.Filter = Filter.ToJson(AllFields);
            await FilterChanged.InvokeAsync(Pivot.Filter);
        }
        catch ( Exception )
        {
            // ignore
        }

        await FilterChanged.InvokeAsync(Pivot.Filter);
    }
}
