@using LANCommander.Launcher.Models
@using LANCommander.SDK.Enums
@namespace LANCommander.Launcher.UI
@inject InstallService InstallService
@inject LocalizationService LocalizationService

@if (CurrentQueueItem != null)
{
    <div class="downloader-current">
        @if (ShowIcon)
        {
            <div class="downloader-current-icon">
                <MediaImage Id="@Progress.IconId" />
            </div>
        }
        <div class="downloader-current-info">
            <div class="downloader-current-upper">
                <div class="downloader-current-upper-status">
                    @if (Progress.Status == SDK.Enums.InstallStatus.Downloading && Progress.Progress > 0)
                    {
                        <Text>@Progress.Status.GetDisplayName() @Progress.Title: @Progress.Progress.ToString("0%")</Text>
                    }
                    else
                    {
                        <Text>@Progress.Status.GetDisplayName()</Text>
                    }
                </div>
                @if (Progress.TransferSpeed > 0)
                {
                    <div class="downloader-current-upper-time-remaining">
                        @Progress.TimeRemaining.ToString(@"hh\:mm\:ss")
                    </div>
                }
            </div>
            <div class="downloader-current-progress">
                <Progress Percent="(Progress.Progress * 100)"/>
            </div>
            <div class="downloader-current-lower">
                <div class="downloader-current-lower-data">
                    @if (Progress.Status == InstallStatus.Canceled)
                    {
                        LocalizationService.GetString("Cancelling");
                    }
                    else
                    {
                        <Text>
                            <ByteSize Value="Progress.BytesTransferred"/> / <ByteSize Value="Progress.TotalBytes"/>
                        </Text>
                    }
                </div>
                <div class="downloader-current-lower-speed">
                    <ByteSize Value="Progress.TransferSpeed" />/s
                </div>
            </div>
        </div>
    </div>
}

@code {
    [Parameter] public bool ShowIcon { get; set; } 
    [Parameter] public IInstallQueueItem? CurrentQueueItem { get; set; }
    [Parameter] public EventCallback<IInstallQueueItem> CurrentQueueItemChanged { get; set; }

    InstallProgress Progress = new();

    protected override async Task OnInitializedAsync()
    {
        InstallService.OnProgress += async (progress) =>
        {
            Progress = progress;

            if (Progress.Status == InstallStatus.Canceled)
            {
                Progress.TransferSpeed = 0;
                Progress.Progress = 1;
                Progress.Indeterminate = true;
            }

            if (Progress.Progress < 0)
                Progress.Progress = 0;

            await InvokeAsync(StateHasChanged);
            await Task.Yield();
        };

        InstallService.OnQueueChanged += async () =>
        {
            var activeQueueItem = InstallService.Queue.OrderByDescending(qi => qi.QueuedOn).FirstOrDefault(qi => qi.State);

            if (activeQueueItem == null)
            {
                CurrentQueueItem = null;
                if (CurrentQueueItemChanged.HasDelegate)
                    await CurrentQueueItemChanged.InvokeAsync(CurrentQueueItem);
                
                await InvokeAsync(StateHasChanged);
                await Task.Yield();
                return;
            }

            if (CurrentQueueItem == null || CurrentQueueItem.Id != activeQueueItem.Id)
            {
                CurrentQueueItem = activeQueueItem;

                if (CurrentQueueItemChanged.HasDelegate)
                    await CurrentQueueItemChanged.InvokeAsync(CurrentQueueItem);
                
                await InvokeAsync(StateHasChanged);
                await Task.Yield();
            }
        };
    }
}