@using System.Collections
@using LANCommander.Server.Settings.Enums
@inject UpdateService UpdateService
@inject NavigationManager NavigationManager

<div class="login-download-pane-container">
    <Popover Trigger="new[] { Trigger.Hover }">
        <ContentTemplate>
            <Flex Vertical Gap="FlexGap.Small">
                @if (IsInitializing)
                {
                    <span ita>Fetching Launchers &mldr;</span>
                }
                else if (DownloadLinks.Count() == 0) 
                {
                    <span>No Launchers available</span>
                }

                @foreach (var downloadLink in DownloadLinks)
                {
                    <Button Type="ButtonType.Text"
                            Block
                            Icon="@downloadLink.Icon"
                            OnClick="() => NavigationManager.NavigateTo(downloadLink.Url, true)"
                            Style="text-align: left">
                        <GridRow Wrap="false" Align="@RowAlign.Middle" Justify="@RowJustify.SpaceBetween">
                            <GridCol Flex=@("auto")>
                                @downloadLink.Name

                                @foreach (var tag in downloadLink.Tags)
                                {
                                    <Tag Icon="@tag.Icon" Color="@(tag.ColorOverride ?? TagColor.Green)">@tag.Name</Tag>
                                }
                            </GridCol>
                            <GridCol Flex=@("none")>
                                <div style="padding-left: 8px;">
                                    @if (downloadLink.IsOnline)
                                    {
                                        <Icon Type="@IconType.Outline.Cloud" />
                                    }
                                </div>
                            </GridCol>
                        </GridRow>
                    </Button>

                }
            </Flex>
        </ContentTemplate>
        <ChildContent>
            <Button Type="ButtonType.Primary" 
                    Size="ButtonSize.Large" 
                    Disabled="@(DownloadLinks.Count() == 0)"
                    Loading="@(DownloadLinks.Count() == 0)"
            >
                Download Launcher
            </Button>
        </ChildContent>
    </Popover>
</div>

@code {
    class DownloadLink
    {
        public class Tag
        {
            public Tag(string name)
            {
                Name = name;
                Icon = string.Empty;
            }
            public string Name { get; set; }
            public string Icon { get; set; }
            public TagColor? ColorOverride { get; set; }
        }

        public string Name { get; set; }
        public string Url { get; set; }
        public string Icon { get; set; }
        public Tag[] Tags { get; set; }
        public bool IsOnline { get; set; }
    }

    bool IsInitializing = false;

    IEnumerable<DownloadLink> DownloadLinks = new List<DownloadLink>();

    readonly string DefaultIcon = IconType.Fill.QuestionCircle;
    readonly Hashtable _iconMap = new()
    {
        [LauncherPlatform.Windows] = IconType.Fill.Windows,
        [LauncherPlatform.Linux] = IconType.Outline.Qq, // Not Linux, but QQ penguin
        [LauncherPlatform.macOS] = IconType.Fill.Apple,
    };

    protected override async Task OnInitializedAsync()
    {
        try
        {
            IsInitializing = true;
            var artifacts = await UpdateService.GetLauncherArtifactsAsync();

            DownloadLinks = artifacts
                .OrderBy(a => a.Platform)
                .ThenBy(a => a.Architecture)
                .Select(a =>
                {
                    var tags = new List<DownloadLink.Tag>();

                    if (artifacts.Count(art => art.Platform == a.Platform && art.Architecture == a.Architecture) > 1)
                    {
                        if (a.Url.ToLower().EndsWith(".exe"))
                            tags.Add(new DownloadLink.Tag("exe"));
                        else if (a.Url.ToLower().EndsWith(".zip"))
                            tags.Add(new DownloadLink.Tag("zip"));
                    }

                    if (a.IsNightly)
                        tags.Add(new DownloadLink.Tag("nightly") { Icon = IconType.Fill.Fire, ColorOverride = TagColor.Volcano });
                    else if (a.IsPrerelease)
                        tags.Add(new DownloadLink.Tag("pre") { ColorOverride = TagColor.Gold });

                    return new DownloadLink
                    {
                        Name = $"{a.Platform} ({a.Architecture})",
                        Icon = _iconMap[a.Platform]?.ToString() ?? DefaultIcon,
                        Url = a.Url,
                        Tags = tags.ToArray(),
                        IsOnline = a.IsOnline,
                    };
                });
        }
        finally
        {
            IsInitializing = false;
        }
    }
}