@page "/"
@page "/searches"
@attribute [Authorize]
@using JdeScoping.Core.ApiContracts
@using JdeScoping.Client.Extensions
@inject ISearchApiClient SearchApi
@inject IHubConnectionService HubConnection
@inject NavigationManager NavigationManager
@implements IDisposable

<PageTitle>Searches - JDE Scoping Tool</PageTitle>

<RadzenStack Orientation="Orientation.Horizontal" AlignItems="AlignItems.Center" JustifyContent="JustifyContent.SpaceBetween" class="rz-mb-4">
    <RadzenText TextStyle="TextStyle.H4" class="rz-m-0">Searches</RadzenText>
    <RadzenStack Orientation="Orientation.Horizontal" Gap="0.5rem">
        <RadzenButton Text="Start New Search" Icon="add" ButtonStyle="ButtonStyle.Primary" Click="@CreateNewSearch" />
        <RadzenButton Text="View Search Queue" Icon="queue" ButtonStyle="ButtonStyle.Light" Click="@ViewQueue" />
    </RadzenStack>
</RadzenStack>

@if (_isLoading)
{
    <LoadingIndicator Message="Loading searches..." />
}
else if (!string.IsNullOrEmpty(_errorMessage))
{
    <RadzenAlert AlertStyle="AlertStyle.Danger" ShowIcon="true" Variant="Variant.Flat" class="rz-mb-4">
        @_errorMessage
    </RadzenAlert>
}
else
{
    <RadzenDataGrid @ref="_grid" Data="@_searches" TItem="ClientSearchViewModel" AllowSorting="true" AllowPaging="true" PageSize="10"
                    PagerHorizontalAlign="HorizontalAlign.Center" AllowColumnResize="true" RowDoubleClick="@OnRowDoubleClick">
        <Columns>
            <RadzenDataGridColumn TItem="ClientSearchViewModel" Property="Name" Title="Name" Width="250px" />
            <RadzenDataGridColumn TItem="ClientSearchViewModel" Property="SubmitDT" Title="Submitted" Width="180px">
                <Template Context="search">
                    @(search.SubmitDt?.ToString("MM/dd/yyyy hh:mm:ss tt") ?? "")
                </Template>
            </RadzenDataGridColumn>
            <RadzenDataGridColumn TItem="ClientSearchViewModel" Property="Status" Title="Status" Width="100px">
                <Template Context="search">
                    <RadzenBadge BadgeStyle="@GetBadgeStyle(search.Status)" Text="@search.Status" />
                </Template>
            </RadzenDataGridColumn>
            <RadzenDataGridColumn TItem="ClientSearchViewModel" Title="Actions" Width="100px" Sortable="false">
                <Template Context="search">
                    <RadzenButton Text="View" Size="ButtonSize.Small" ButtonStyle="ButtonStyle.Info" Click="@(() => ViewSearch(search.Id))" />
                </Template>
            </RadzenDataGridColumn>
        </Columns>
    </RadzenDataGrid>
}

@code {
    private List<ClientSearchViewModel> _searches = [];
    private RadzenDataGrid<ClientSearchViewModel>? _grid;
    private bool _isLoading = true;
    private string? _errorMessage;

    protected override async Task OnInitializedAsync()
    {
        await LoadSearchesAsync();
        await SetupSignalRAsync();
    }

    private async Task LoadSearchesAsync()
    {
        _isLoading = true;
        _errorMessage = null;
        try
        {
            var result = await SearchApi.GetUserSearchesAsync();
            result.Switch(
                searches => { _searches = searches.ToClientList(); },
                notFound => { _errorMessage = "No searches found."; _searches = []; },
                validation => { _errorMessage = string.Join("; ", validation.FieldErrors.SelectMany(e => e.Value)); },
                unauthorized => { _errorMessage = "Session expired. Please login again."; },
                forbidden => { _errorMessage = "Access denied."; },
                error => { _errorMessage = error.Message; }
            );
        }
        finally
        {
            _isLoading = false;
        }
    }

    private async Task SetupSignalRAsync()
    {
        HubConnection.OnSearchUpdate += HandleSearchUpdate;
        await HubConnection.StartAsync();
    }

    private void HandleSearchUpdate(SearchUpdate update)
    {
        InvokeAsync(() =>
        {
            var existing = _searches.FirstOrDefault(s => s.Id == update.Id);
            if (existing != null)
            {
                existing.Status = update.Status;
                existing.SubmitDt = update.SubmitDt;
                existing.StartDt = update.StartDt;
                existing.EndDt = update.EndDt;
            }
            else
            {
                _searches.Insert(0, new ClientSearchViewModel
                {
                    Id = update.Id,
                    Name = update.Name,
                    UserName = update.UserName,
                    Status = update.Status,
                    SubmitDt = update.SubmitDt,
                    StartDt = update.StartDt,
                    EndDt = update.EndDt
                });
            }
            StateHasChanged();
        });
    }

    private void CreateNewSearch()
    {
        NavigationManager.NavigateTo("/search");
    }

    private void ViewQueue()
    {
        NavigationManager.NavigateTo("/search/queue");
    }

    private void ViewSearch(int id)
    {
        NavigationManager.NavigateTo($"/search/{id}");
    }

    private void OnRowDoubleClick(DataGridRowMouseEventArgs<ClientSearchViewModel> args)
    {
        ViewSearch(args.Data.Id);
    }

    private static BadgeStyle GetBadgeStyle(string status) => status switch
    {
        "Error" => BadgeStyle.Danger,
        "Ended" => BadgeStyle.Success,
        "Running" => BadgeStyle.Info,
        "Queued" => BadgeStyle.Warning,
        _ => BadgeStyle.Light
    };

    public void Dispose()
    {
        HubConnection.OnSearchUpdate -= HandleSearchUpdate;
    }
}