@using MongoDB.Bson.IO
@using Rms.Risk.Mango.Components.JForms
@inherits CmdBase
@attribute [MongoCommand(CmdType.Admin, "Shard", "Collections")]

@if (Parameters != null)

@*
 *                                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.
 *@
{
    <div class="@Class">
        <div class="flex-stack-horizontal">
            <div class="form-row mr-3">
                <JFormCommand CommandTemplate="@CommandTemplate" Template="@_template" CommandChanged="@OnCommandChanged"/>
            </div>
            <div class="form-row">
                <IndexEditComponent @bind-Json="IndexJson" @bind-IsValid="@IsValid" Collection="@Collection" HideIndexParams="true"/>
            </div>
        </div>

        <div class="form-row">
            <FormJson Value="@(Parameters?.CommandJson)" Class="cmd-json" />
        </div>
        <div class="form-row">
            <FormJson Value="@Result" Class="res-json"/>
        </div>
    </div>
}

@code {

    private readonly TemplateRec _template = new()
    {
        Parameters =
        [
            new() { Type = "bool", Name = "Unique",                Path = "$.unique",              Icon = "icon-wrench-outline-sm" },
            new() { Type = "int",  Name  = "Initial Chunks",       Path = "$.numInitialChunks",    Icon = "icon-wrench-outline-sm" },
            new() { Type = "bool", Name = "PresplitHashedZones",   Path = "$.presplitHashedZones", Icon = "icon-wrench-outline-sm" }
        ]
    };

    protected override string CommandTemplate => @"{
    shardCollection : ""[DATABASE].[COLLECTION]"",
    key : { ""_id"": ""hashed""},
    unique: false,
    presplitHashedZones: false,
    numInitialChunks: 8182,
}";

    private string IndexJson
    {
        get;
        set
        {
            if (field == value)
                return;
            field = value;
            UpdateCommand();
        }
    } = "{ key : { _id : \"hashed\"} }";

    private bool IsValid
    {
        get;
        set
        {
            if (field == value)
                return;
            field = value;
            Validate();
        }
    }

    protected override void OnAfterRender(bool firstRender)
    {
        if (!firstRender)
            return;
        if (Parameters != null)
            Parameters.RequiredConnectionType = CommandParams.DatabaseConnectionType.Admin;
    }

    private void UpdateCommand()
    {
        if (Parameters == null)
            return;

        var doc = BsonDocument.Parse(Parameters.CommandJson);
        doc["key"] = BsonDocument.Parse(IndexJson)["key"];

        Parameters.CommandJson = doc.ToJson(new() { Indent = true, OutputMode = JsonOutputMode.RelaxedExtendedJson });
        Parameters.NeedConfirmation = true;
        Validate();
        InvokeAsync(StateHasChanged);
    }

    protected override void Validate()
    {
        if (Parameters != null && Parameters.CanExecute != IsValid)
        {
            Parameters.CanExecute = IsValid;
            InvokeAsync(StateHasChanged);
        }

    }

}
