@using MudBlazor
@using RobotNet10.ScriptEngine.Shared

<MudDialog>
    <TitleContent>
        <MudText Typo="Typo.h6">Restore Backup</MudText>
    </TitleContent>
    <DialogContent>
        @if (Backups == null || Backups.Length == 0)
        {
            <MudText>No backups available.</MudText>
        }
        else
        {
            <MudSelect @bind-Value="SelectedBackup" 
                       Label="Select Backup" 
                       Variant="Variant.Outlined"
                       FullWidth="true">
                @foreach (var backup in Backups)
                {
                    <MudSelectItem Value="@backup.FileName">
                        @backup.FileName - @backup.CreatedAt.ToString("yyyy-MM-dd HH:mm:ss") (@FormatSize(backup.Size))
                    </MudSelectItem>
                }
            </MudSelect>
        }
    </DialogContent>
    <DialogActions>
        <MudButton OnClick="Cancel">Cancel</MudButton>
        <MudButton Variant="Variant.Filled" 
                   Color="Color.Primary" 
                   OnClick="Submit" 
                   Disabled="@(Backups == null || Backups.Length == 0 || string.IsNullOrWhiteSpace(SelectedBackup))">
            Restore
        </MudButton>
    </DialogActions>
</MudDialog>

@code {
    [CascadingParameter] IMudDialogInstance Dialog { get; set; } = null!;
    [Parameter] public ScriptBackupInfo[] Backups { get; set; } = Array.Empty<ScriptBackupInfo>();

    private string? SelectedBackup { get; set; }

    protected override void OnInitialized()
    {
        // Select first backup by default (newest)
        if (Backups != null && Backups.Length > 0)
        {
            SelectedBackup = Backups[0].FileName;
        }
    }

    private string FormatSize(long size)
    {
        if (size < 1024) return $"{size} B";
        if (size < 1024 * 1024) return $"{size / 1024.0:F2} KB";
        return $"{size / (1024.0 * 1024.0):F2} MB";
    }

    private void Cancel() => Dialog.Cancel();

    private void Submit()
    {
        if (string.IsNullOrWhiteSpace(SelectedBackup))
        {
            return;
        }

        Dialog.Close(DialogResult.Ok(SelectedBackup));
    }
}