Iceshrimp.NET/Iceshrimp.Backend/Pages/NotePreview.razor

@page "/notes/{id}"
@using Iceshrimp.Backend.Components.PublicPreview.Attributes
@using Iceshrimp.Backend.Core.Extensions
@attribute [PublicPreviewRouteFilter]
@inherits AsyncComponentBase

@if (_note is null)
{
    Context.Response.StatusCode = 404;
    <div>
        <h2>Not found</h2>
        <p>This note either doesn't exist or is only accessible to authenticated users</p>
    </div>
}
else
{
    <NoteComponent Note="_note"/>
    if (_note.QuoteUrl != null)
    {
        var displayUrl = _note.QuoteUrl.StartsWith("https://") ? _note.QuoteUrl[8..] : _note.QuoteUrl[7..];
        <p>
            @if (_note.QuoteInaccessible)
            {
                <i>This note is quoting <a href="@_note.QuoteUrl">@displayUrl</a>, which has either been deleted or is not publicly visible.</i>
            }
            else
            {
                <i>This note is quoting <a href="@_note.QuoteUrl">@displayUrl</a></i>
            }
        </p>
    }

    if (_note.Poll != null)
    {
        var total = _note.Poll.Choices.Sum(p => p.Votes);

        <div class="poll-results">
            @foreach (var choice in _note.Poll.Choices)
            {
                var percentage = total == 0 ? 0 : Math.Floor(choice.Votes / (double)total * 100);

                <span class="poll-result" style="--percentage: @percentage%;">
                    <span class="poll-value">@choice.Value</span>
                    <span class="poll-info"><span class="vote-count">@choice.Votes votes</span><span class="vote-percentage">@percentage%</span></span>
                </span>
            }
        </div>
        
        List<string> footerText = [];
        @if (_note.Poll.Multiple)
            footerText.Add("Multiple choice");
        @if (_note.Poll.VotersCount != null)
            footerText.Add($"{_note.Poll.VotersCount} users voted");
        @if (_note.Poll.ExpiresAt != null)
            footerText.Add(_note.Poll.ExpiresAt <= DateTime.UtcNow ? "Ended" : $"Ends at {_note.Poll.ExpiresAt.Value.ToLocalTime():G}");

        <span>@string.Join(" - ", footerText)</span>
    }

    if (!ShowMedia && _note.Attachments != null)
    {
        <p>
            <i>This post has attachments, but this server's configuration prevents them from being displayed here.</i>
        </p>
    }
    else if (ShowMedia && _note.Attachments is { Count: > 0 })
    {
        foreach (var file in _note.Attachments)
        {
            if (file.MimeType.StartsWith("image/"))
            {
                <img src="@file.Url" max-width="200px" max-height="200px" alt="@(file.Alt ?? "")"/>
            }
            else if (file.MimeType.StartsWith("video/"))
            {
                <video controls max-width="200px" max-height="200px">
                    <source src="@file.Url" type="@file.MimeType"/>
                    <p>@(file.Alt ?? "No alt text.")</p>
                </video>
            }
            else
            {
                <div>Attachment: <a href="@file.Url">@file.Name</a> (@file.MimeType)</div>
            }
        }
    }

    <PageTitle>Note by @@@_note.User.Username - @_instanceName</PageTitle>
    <HeadContent>
        @{
            var cardType        = "summary";
            var previewImageUrl = _note.User.AvatarUrl;
            if (ShowMedia && _note.Attachments != null)
            {
                if (_note.Attachments.FirstOrDefault(p => p.MimeType.StartsWith("image/") && !p.Sensitive) is { } img)
                {
                    cardType        = "summary_large_image";
                    previewImageUrl = img.Url;
                }
            }

            string description;
            if (_note.Cw is { } cw)
            {
                description = $"Content warning: {cw}";
            }
            else
            {
                var text = _note.RawText?.TruncateEllipsis(280);
                if (_note.Attachments is { Count: > 0 })
                {
                    var attachmentText = $"({_note.Attachments.Count} attachments)";
                    text = text is null
                        ? attachmentText
                        : text + $"\n{attachmentText}";
                }

                description = text + (_note.QuoteUrl != null ? $"\n\nRE: {_note.QuoteUrl}" : "");
            }

            var username = _note.User.Username;
            var title    = _note.User.RawDisplayName is { } name ? $"{name} (@{username})" : $"@{username}";
        }

        <meta name="twitter:card" content="@cardType">
        <meta property="og:site_name" content="@_instanceName">
        <meta property="og:title" content="@title">
        <meta property="og:image" content="@previewImageUrl">
        <meta property="og:description" content="@description">
        <link rel="alternate" type="application/activity+json" href="@_note.Uri">

        <VersionedLink rel="stylesheet" href="/css/public-preview.css"/>
    </HeadContent>

    if (!ShowRemoteReplies)
    {
        <p>
            <i>This server's configuration is preventing remotely originating content from being shown. This view may therefore be incomplete.</i>
        </p>
    }
}