@using MoonCore.Blazor.FlyonUi.Components
@using MoonCore.Blazor.FlyonUi.Toasts
@using MoonCore.Blazor.Tailwind.Components
@using MoonCore.Blazor.Tailwind.Toasts
@using MoonCore.Helpers
@using MoonlightServers.Frontend.Services
@using MoonlightServers.Shared.Http.Responses.Admin.Nodes
@using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Statistics

@inject NodeService NodeService
@inject ToastService ToastService
@inject ILogger<OverviewNodeUpdate> Logger

@implements IDisposable

<LazyLoader Load="Load">

    <div class="mb-3 mt-5 text-xl font-semibold">
        Overview
    </div>

    <div class="grid grid-cols-1 lg:grid-cols-3 gap-5">
        <div class="col-span-1 card card-body">
            <div class="flex justify-between">
                <p class="text-xl font-semibold text-slate-200">
                    @Math.Round(Statistics.Cpu.Usage, 2)%
                </p>
                <i class="icon-cpu text-4xl text-primary"></i>
            </div>
            <div class="text-base text-slate-300">
                <span class="truncate">
                    CPU: @Statistics.Cpu.Model
                </span>
            </div>
        </div>

        <div class="col-span-1 card card-body">
            <div class="flex justify-between">
                <p class="text-xl font-semibold text-slate-200">
                    @Formatter.FormatSize(Statistics.Memory.Total - Statistics.Memory.Available)
                    /
                    @Formatter.FormatSize(Statistics.Memory.Total)
                </p>
                <i class="icon-memory-stick text-4xl text-primary"></i>
            </div>
            <div class="text-base text-slate-300">
                Memory
            </div>
        </div>

        <div class="col-span-1 card card-body">
            <div class="flex justify-between">
                <div class="text-xl font-semibold text-slate-200">
                    @Formatter.FormatSize(Statistics.Memory.SwapTotal - Statistics.Memory.SwapFree)
                    /
                    @Formatter.FormatSize(Statistics.Memory.SwapTotal)
                </div>
                <i class="icon-shapes text-4xl text-primary"></i>
            </div>
            <div class="text-base text-slate-300">
                Swap
            </div>
        </div>
    </div>

    <div class="mb-3 mt-5 text-xl font-semibold">
        CPU
    </div>

    <div class="card card-body grid grid-cols-1 lg:grid-cols-2 gap-y-2 gap-x-5">
        @{
            var i = 0;
        }

        @foreach (var usage in Statistics.Cpu.UsagePerCore)
        {
            var percentRounded = Math.Round(usage, 2);

            <div class="flex flex-row items-center col-span-1">
                <div class="text-sm text-slate-300 me-1.5 grow-0 flex flex-col">
                    <span>#@(i)</span>
                </div>
                <div class="grow">
                    <div class="progress bg-gray-750">
                        <div style="width: @(usage)%"
                             class="progress-bar h-3 @(GetBackgroundColorByPercent(percentRounded))"></div>
                    </div>
                </div>
            </div>

            i++;
        }
    </div>

    <div class="mb-3 mt-5 text-xl font-semibold">
        Disks
    </div>

    <div class="grid grid-cols-1 lg:grid-cols-3 gap-5">
        @foreach (var disk in Statistics.Disks)
        {
            var usedPercent = Math.Round((disk.DiskTotal - disk.DiskFree) / (double)disk.DiskTotal * 100, 2);
            var iNodesPercent = Math.Round((disk.InodesTotal - disk.InodesFree) / (double)disk.InodesTotal * 100, 2);

            <div class="col-span-1 card card-body">
                <div class="flex items-center">
                    <div class="grow">
                        <div class="progress bg-gray-750">
                            <div style="width: @(usedPercent)%"
                                 class="progress-bar h-3 @(GetBackgroundColorByPercent(usedPercent))"></div>
                        </div>
                    </div>
                </div>
                <div class="text-sm text-slate-300 mt-2.5 flex flex-col">
                    <div>
                        Device: <span class="font-semibold">@disk.Device</span> - Mounted at: <span class="font-semibold truncate">@disk.MountPath</span>
                    </div>
                    <div>
                        Used: <span class="font-semibold">@Formatter.FormatSize(disk.DiskTotal - disk.DiskFree)</span>
                        Total: <span class="font-semibold">@Formatter.FormatSize(disk.DiskTotal)</span>
                    </div>
                    <div>
                        INodes: <span class="font-semibold">@(iNodesPercent)%</span>
                    </div>
                </div>
            </div>
        }
    </div>
    
    <div class="mb-3 mt-5 text-xl font-semibold">
        Docker
    </div>

    <div class="grid grid-cols-1 lg:grid-cols-3 gap-5">
        <div class="col-span-1 card card-body">
            <div class="flex justify-between">
                <p class="text-xl font-semibold text-slate-200">
                    @Formatter.FormatSize(DockerStatistics.ImagesUsed) (@Formatter.FormatSize(DockerStatistics.ImagesReclaimable) unused)
                </p>
                <i class="icon-gallery-horizontal-end text-4xl text-primary"></i>
            </div>
            <div class="text-base text-slate-300">
                Images
            </div>
        </div>
        
        <div class="col-span-1 card card-body">
            <div class="flex justify-between">
                <p class="text-xl font-semibold text-slate-200">
                    @Formatter.FormatSize(DockerStatistics.ContainersUsed) ( @Formatter.FormatSize(DockerStatistics.ContainersReclaimable) unused)
                </p>
                <i class="icon-container text-4xl text-primary"></i>
            </div>
            <div class="text-base text-slate-300">
                Containers
            </div>
        </div>

        <div class="col-span-1 card card-body">
            <div class="flex justify-between">
                <p class="text-xl font-semibold text-slate-200">
                    @Formatter.FormatSize(DockerStatistics.BuildCacheUsed) (@Formatter.FormatSize(DockerStatistics.BuildCacheReclaimable) unused)
                </p>
                <i class="icon-hard-hat text-4xl text-primary"></i>
            </div>
            <div class="text-base text-slate-300">
                Build Cache
            </div>
        </div>
    </div>
</LazyLoader>

@code
{
    [Parameter] public NodeResponse Node { get; set; }

    private StatisticsResponse Statistics;
    private DockerStatisticsResponse DockerStatistics;

    private Timer? UpdateTimer;

    private async Task Load(LazyLoader _)
    {
        Statistics = await NodeService.GetStatistics(Node.Id);
        DockerStatistics = await NodeService.GetDockerStatistics(Node.Id);

        UpdateTimer = new Timer(HandleUpdate, null, TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(3));
    }

    private async void HandleUpdate(object? _)
    {
        try
        {
            Statistics = await NodeService.GetStatistics(Node.Id);
            DockerStatistics = await NodeService.GetDockerStatistics(Node.Id);
            
            await InvokeAsync(StateHasChanged);
        }
        catch (Exception e)
        {
            Logger.LogWarning("An error occured while fetching status update: {e}", e);
            await ToastService.Danger("Unable to fetch status update", e.Message);
        }
    }
    
    private string GetBackgroundColorByPercent(double percent)
    {
        if (percent < 70)
            return "bg-success";
        else if (percent < 80)
            return "bg-warning";
        else
            return "bg-danger";
    }

    public void Dispose()
    {
        UpdateTimer?.Dispose();
    }
}