@using ZB.MOM.WW.ScadaBridge.CentralUI.Services
@inject IDataConnectionMoveService MoveService

@*
    M9-T24b / T33b: body component for the "Move data connection" dialog hosted by
    IDialogService.ShowAsync. Renders ONLY the site picker + action buttons inside
    the host's .modal-body; the host owns the backdrop, header, and focus trap.

    The body still injects IDataConnectionMoveService and dispatches the
    MoveDataConnectionCommand through the guard-running ManagementActor path (NOT a
    direct repository write) so the server's Designer gate and every move guard run.
    A guard error is shown inline and the dialog STAYS OPEN; success closes the
    dialog with Close(true) so the parent reloads the tree. Cancel resolves to false.
*@
@if (SiteOptions.Any())
{
    <select class="form-select form-select-sm" @bind="_targetSiteId">
        @foreach (var opt in SiteOptions)
        {
            <option value="@opt.Id">@opt.Label</option>
        }
    </select>
}
else
{
    <div class="text-muted small">No other site is available to move this connection to.</div>
}
@if (!string.IsNullOrEmpty(_error))
{
    <div class="text-danger small mt-2" data-test="move-connection-error">@_error</div>
}

<div class="modal-footer px-0 pb-0 mt-3">
    <button class="btn btn-outline-secondary btn-sm" @onclick="() => Context.Cancel()" disabled="@_busy">Cancel</button>
    <button class="btn btn-primary btn-sm" @onclick="Submit"
            disabled="@(_busy || !SiteOptions.Any())">Move</button>
</div>

@code {
    /// <summary>Host-supplied context: Close(true) on a successful move, Cancel on dismiss.</summary>
    [Parameter] public DialogContext<bool> Context { get; set; } = default!;
    [Parameter] public int ConnectionId { get; set; }
    [Parameter] public string ConnectionName { get; set; } = string.Empty;
    [Parameter] public IEnumerable<(int Id, string Label)> SiteOptions { get; set; } = Array.Empty<(int, string)>();

    private int? _targetSiteId;
    private string? _error;
    private bool _busy;

    protected override void OnInitialized()
    {
        // Default the picker to the first candidate site.
        _targetSiteId = SiteOptions.Select(o => (int?)o.Id).FirstOrDefault();
    }

    private async Task Submit()
    {
        if (_targetSiteId is not int target || _busy) return;

        _busy = true;
        _error = null;
        try
        {
            var result = await MoveService.MoveAsync(ConnectionId, target);

            if (result.Success)
            {
                // Success closes the dialog; the parent's post-ShowAsync block toasts
                // and reloads the tree.
                Context.Close(true);
            }
            else
            {
                // Surface the server guard error inline; keep the dialog open.
                _error = result.Error ?? "Move failed.";
            }
        }
        catch (Exception ex)
        {
            _error = $"Move failed: {ex.Message}";
        }
        finally
        {
            _busy = false;
        }
    }
}