using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace ytLive.Models;

public enum SocialService
{
    YouTube, Twitch, X, Instagram, TikTok, Facebook, Discord, Kick,
    Threads, Bluesky, GitHub, LinkedIn, Pinterest, Snapchat, Reddit,
    WhatsApp, Telegram, Link, Website, Fediverse
}

public enum SocialBarPosition { Top, Bottom }

public sealed class SocialEntry : INotifyPropertyChanged
{
    public SocialService Service { get; init; }
    public string Handle { get; init; } = string.Empty;
    public string ProfileUrl { get; init; } = string.Empty;

    /// <summary>Fediverse instance software (nodeinfo) for <see cref="Service"/> = Fediverse.</summary>
    public string? FediverseSoftware { get; init; }

    public string ServiceName => Service.ToString();
    public string LogoData => Service == SocialService.Fediverse
        ? SocialServiceIcons.LogoDataForFediverse(FediverseSoftware)
        : SocialServiceIcons.LogoDataFor(Service);

    public event PropertyChangedEventHandler? PropertyChanged;
    private void Raise([CallerMemberName] string? name = null)
        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
}

/// <summary>
/// The app-wide social bar config — a global resource (like the webcam) that
/// every scene shows when <see cref="BarEnabled"/> is on and entries exist. The
/// dialog provides the handles; the app validates each by looking up the social
/// page before committing. Freemium: YT + 1 other. Premium: all six slots.
/// </summary>
public sealed class SocialsConfig : INotifyPropertyChanged
{
    public ObservableCollection<SocialEntry> Entries { get; } = new();

    private bool _barEnabled = true;
    public bool BarEnabled
    {
        get => _barEnabled;
        set => Set(ref _barEnabled, value);
    }

    private SocialBarPosition _barPosition = SocialBarPosition.Bottom;
    public SocialBarPosition BarPosition
    {
        get => _barPosition;
        set => Set(ref _barPosition, value);
    }

    public event PropertyChangedEventHandler? PropertyChanged;
    private bool Set<T>(ref T field, T value, [CallerMemberName] string? name = null)
    {
        if (EqualityComparer<T>.Default.Equals(field, value)) return false;
        field = value;
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        return true;
    }
}

/// <summary>
/// Brand logo path data (Simple Icons, CC0) plus the small utility glyphs the
/// social dialog uses — lock (Premium gate), do-not (empty/invalid slot) and a
/// generic link (bare Link/Website entries). All strings are 24x24 path data
/// consumed by a Path.Data binding (the Geometry type converter handles the string).
/// </summary>
public static class SocialServiceIcons
{
    public const string LockedIconData = "M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zm-6 9c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2zm3.1-9H8.9V6c0-1.71 1.39-3.1 3.1-3.1 1.71 0 3.1 1.39 3.1 3.1v2z";
    public const string DoNotIconData = "M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zM4 12c0-4.42 3.58-8 8-8 1.85 0 3.55.63 4.9 1.69L5.69 16.9C4.63 15.55 4 13.85 4 12zm8 8c-1.85 0-3.55-.63-4.9-1.69L18.31 7.1C19.37 8.45 20 10.15 20 12c0 4.42-3.58 8-8 8z";
    public const string LinkIconData = "M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z";

    private const string YouTubePath = "M23.498 6.186a3.016 3.016 0 0 0-2.122-2.136C19.505 3.545 12 3.545 12 3.545s-7.505 0-9.377.505A3.017 3.017 0 0 0 .502 6.186C0 8.07 0 12 0 12s0 3.93.502 5.814a3.016 3.016 0 0 0 2.122 2.136c1.871.505 9.376.505 9.376.505s7.505 0 9.377-.505a3.015 3.015 0 0 0 2.122-2.136C24 15.93 24 12 24 12s0-3.93-.502-5.814zM9.545 15.568V8.432L15.818 12l-6.273 3.568z";
    private const string TwitchPath = "M11.571 4.714h1.715v5.143H11.57zm4.715 0H18v5.143h-1.714zM6 0L1.714 4.286v15.428h5.143V24l4.286-4.286h3.428L22.286 12V0zm14.571 11.143l-3.428 3.428h-3.429l-3 3v-3H6.857V1.714h13.714Z";
    private const string XPath = "M14.234 10.162 22.977 0h-2.072l-7.591 8.824L7.251 0H.258l9.168 13.343L.258 24H2.33l8.016-9.318L16.749 24h6.993zm-2.837 3.299-.929-1.329L3.076 1.56h3.182l5.965 8.532.929 1.329 7.754 11.09h-3.182z";
    private const string InstagramPath = "M7.0301.084c-1.2768.0602-2.1487.264-2.911.5634-.7888.3075-1.4575.72-2.1228 1.3877-.6652.6677-1.075 1.3368-1.3802 2.127-.2954.7638-.4956 1.6365-.552 2.914-.0564 1.2775-.0689 1.6882-.0626 4.947.0062 3.2586.0206 3.6671.0825 4.9473.061 1.2765.264 2.1482.5635 2.9107.308.7889.72 1.4573 1.388 2.1228.6679.6655 1.3365 1.0743 2.1285 1.38.7632.295 1.6361.4961 2.9134.552 1.2773.056 1.6884.069 4.9462.0627 3.2578-.0062 3.668-.0207 4.9478-.0814 1.28-.0607 2.147-.2652 2.9098-.5633.7889-.3086 1.4578-.72 2.1228-1.3881.665-.6682 1.0745-1.3378 1.3795-2.1284.2957-.7632.4966-1.636.552-2.9124.056-1.2809.0692-1.6898.063-4.948-.0063-3.2583-.021-3.6668-.0817-4.9465-.0607-1.2797-.264-2.1487-.5633-2.9117-.3084-.7889-.72-1.4568-1.3876-2.1228C21.2982 1.33 20.628.9208 19.8378.6165 19.074.321 18.2017.1197 16.9244.0645 15.6471.0093 15.236-.005 11.977.0014 8.718.0076 8.31.0215 7.0301.0839m.1402 21.6932c-1.17-.0509-1.8053-.2453-2.2287-.408-.5606-.216-.96-.4771-1.3819-.895-.422-.4178-.6811-.8186-.9-1.378-.1644-.4234-.3624-1.058-.4171-2.228-.0595-1.2645-.072-1.6442-.079-4.848-.007-3.2037.0053-3.583.0607-4.848.05-1.169.2456-1.805.408-2.2282.216-.5613.4762-.96.895-1.3816.4188-.4217.8184-.6814 1.3783-.9003.423-.1651 1.0575-.3614 2.227-.4171 1.2655-.06 1.6447-.072 4.848-.079 3.2033-.007 3.5835.005 4.8495.0608 1.169.0508 1.8053.2445 2.228.408.5608.216.96.4754 1.3816.895.4217.4194.6816.8176.9005 1.3787.1653.4217.3617 1.056.4169 2.2263.0602 1.2655.0739 1.645.0796 4.848.0058 3.203-.0055 3.5834-.061 4.848-.051 1.17-.245 1.8055-.408 2.2294-.216.5604-.4763.96-.8954 1.3814-.419.4215-.8181.6811-1.3783.9-.4224.1649-1.0577.3617-2.2262.4174-1.2656.0595-1.6448.072-4.8493.079-3.2045.007-3.5825-.006-4.848-.0608M16.953 5.5864A1.44 1.44 0 1 0 18.39 4.144a1.44 1.44 0 0 0-1.437 1.4424M5.8385 12.012c.0067 3.4032 2.7706 6.1557 6.173 6.1493 3.4026-.0065 6.157-2.7701 6.1506-6.1733-.0065-3.4032-2.771-6.1565-6.174-6.1498-3.403.0067-6.156 2.771-6.1496 6.1738M8 12.0077a4 4 0 1 1 4.008 3.9921A3.9996 3.9996 0 0 1 8 12.0077";
    private const string TikTokPath = "M12.525.02c1.31-.02 2.61-.01 3.91-.02.08 1.53.63 3.09 1.75 4.17 1.12 1.11 2.7 1.62 4.24 1.79v4.03c-1.44-.05-2.89-.35-4.2-.97-.57-.26-1.1-.59-1.62-.93-.01 2.92.01 5.84-.02 8.75-.08 1.4-.54 2.79-1.35 3.94-1.31 1.92-3.58 3.17-5.91 3.21-1.43.08-2.86-.31-4.08-1.03-2.02-1.19-3.44-3.37-3.65-5.71-.02-.5-.03-1-.01-1.49.18-1.9 1.12-3.72 2.58-4.96 1.66-1.44 3.98-2.13 6.15-1.72.02 1.48-.04 2.96-.04 4.44-.99-.32-2.15-.23-3.02.37-.63.41-1.11 1.04-1.36 1.75-.21.51-.15 1.07-.14 1.61.24 1.64 1.82 3.02 3.5 2.87 1.12-.01 2.19-.66 2.77-1.61.19-.33.4-.67.41-1.06.1-1.79.06-3.57.07-5.36.01-4.03-.01-8.05.02-12.07z";
    private const string FacebookPath = "M9.101 23.691v-7.98H6.627v-3.667h2.474v-1.58c0-4.085 1.848-5.978 5.858-5.978.401 0 .955.042 1.468.103a8.68 8.68 0 0 1 1.141.195v3.325a8.623 8.623 0 0 0-.653-.036 26.805 26.805 0 0 0-.733-.009c-.707 0-1.259.096-1.675.309a1.686 1.686 0 0 0-.679.622c-.258.42-.374.995-.374 1.752v1.297h3.919l-.386 2.103-.287 1.564h-3.246v8.245C19.396 23.238 24 18.179 24 12.044c0-6.627-5.373-12-12-12s-12 5.373-12 12c0 5.628 3.874 10.35 9.101 11.647Z";
    private const string DiscordPath = "M20.317 4.3698a19.7913 19.7913 0 00-4.8851-1.5152.0741.0741 0 00-.0785.0371c-.211.3753-.4447.8648-.6083 1.2495-1.8447-.2762-3.68-.2762-5.4868 0-.1636-.3933-.4058-.8742-.6177-1.2495a.077.077 0 00-.0785-.037 19.7363 19.7363 0 00-4.8852 1.515.0699.0699 0 00-.0321.0277C.5334 9.0458-.319 13.5799.0992 18.0578a.0824.0824 0 00.0312.0561c2.0528 1.5076 4.0413 2.4228 5.9929 3.0294a.0777.0777 0 00.0842-.0276c.4616-.6304.8731-1.2952 1.226-1.9942a.076.076 0 00-.0416-.1057c-.6528-.2476-1.2743-.5495-1.8722-.8923a.077.077 0 01-.0076-.1277c.1258-.0943.2517-.1923.3718-.2914a.0743.0743 0 01.0776-.0105c3.9278 1.7933 8.18 1.7933 12.0614 0a.0739.0739 0 01.0785.0095c.1202.099.246.1981.3728.2924a.077.077 0 01-.0066.1276 12.2986 12.2986 0 01-1.873.8914.0766.0766 0 00-.0407.1067c.3604.698.7719 1.3628 1.225 1.9932a.076.076 0 00.0842.0286c1.961-.6067 3.9495-1.5219 6.0023-3.0294a.077.077 0 00.0313-.0552c.5004-5.177-.8382-9.6739-3.5485-13.6604a.061.061 0 00-.0312-.0286zM8.02 15.3312c-1.1825 0-2.1569-1.0857-2.1569-2.419 0-1.3332.9555-2.4189 2.157-2.4189 1.2108 0 2.1757 1.0952 2.1568 2.419 0 1.3332-.9555 2.4189-2.1569 2.4189zm7.9748 0c-1.1825 0-2.1569-1.0857-2.1569-2.419 0-1.3332.9554-2.4189 2.1569-2.4189 1.2108 0 2.1757 1.0952 2.1568 2.419 0 1.3332-.946 2.4189-2.1568 2.4189Z";
    private const string KickPath = "M1.333 0h8v5.333H12V2.667h2.667V0h8v8H20v2.667h-2.667v2.666H20V16h2.667v8h-8v-2.667H12v-2.666H9.333V24h-8Z";
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    private const string SnapchatPath = "M12.206.793c.99 0 4.347.276 5.93 3.821.529 1.193.403 3.219.299 4.847l-.003.06c-.012.18-.022.345-.03.51.075.045.203.09.401.09.3-.016.659-.12 1.033-.301.165-.088.344-.104.464-.104.182 0 .359.029.509.09.45.149.734.479.734.838.015.449-.39.839-1.213 1.168-.089.029-.209.075-.344.119-.45.135-1.139.36-1.333.81-.09.224-.061.524.12.868l.015.015c.06.136 1.526 3.475 4.791 4.014.255.044.435.27.42.509 0 .075-.015.149-.045.225-.24.569-1.273.988-3.146 1.271-.059.091-.12.375-.164.57-.029.179-.074.36-.134.553-.076.271-.27.405-.555.405h-.03c-.135 0-.313-.031-.538-.074-.36-.075-.765-.135-1.273-.135-.3 0-.599.015-.913.074-.6.104-1.123.464-1.723.884-.853.599-1.826 1.288-3.294 1.288-.06 0-.119-.015-.18-.015h-.149c-1.468 0-2.427-.675-3.279-1.288-.599-.42-1.107-.779-1.707-.884-.314-.045-.629-.074-.928-.074-.54 0-.958.089-1.272.149-.211.043-.391.074-.54.074-.374 0-.523-.224-.583-.42-.061-.192-.09-.389-.135-.567-.046-.181-.105-.494-.166-.57-1.918-.222-2.95-.642-3.189-1.226-.031-.063-.052-.15-.055-.225-.015-.243.165-.465.42-.509 3.264-.54 4.73-3.879 4.791-4.02l.016-.029c.18-.345.224-.645.119-.869-.195-.434-.884-.658-1.332-.809-.121-.029-.24-.074-.346-.119-1.107-.435-1.257-.93-1.197-1.273.09-.479.674-.793 1.168-.793.146 0 .27.029.383.074.42.194.789.3 1.104.3.234 0 .384-.06.465-.105l-.046-.569c-.098-1.626-.225-3.651.307-4.837C7.392 1.077 10.739.807 11.727.807l.419-.015h.06z";
    private const string RedditPath = "M12 0C5.373 0 0 5.373 0 12c0 3.314 1.343 6.314 3.515 8.485l-2.286 2.286C.775 23.225 1.097 24 1.738 24H12c6.627 0 12-5.373 12-12S18.627 0 12 0Zm4.388 3.199c1.104 0 1.999.895 1.999 1.999 0 1.105-.895 2-1.999 2-.946 0-1.739-.657-1.947-1.539v.002c-1.147.162-2.032 1.15-2.032 2.341v.007c1.776.067 3.4.567 4.686 1.363.473-.363 1.064-.58 1.707-.58 1.547 0 2.802 1.254 2.802 2.802 0 1.117-.655 2.081-1.601 2.531-.088 3.256-3.637 5.876-7.997 5.876-4.361 0-7.905-2.617-7.998-5.87-.954-.447-1.614-1.415-1.614-2.538 0-1.548 1.255-2.802 2.803-2.802.645 0 1.239.218 1.712.585 1.275-.79 2.881-1.291 4.64-1.365v-.01c0-1.663 1.263-3.034 2.88-3.207.188-.911.993-1.595 1.959-1.595Zm-8.085 8.376c-.784 0-1.459.78-1.506 1.797-.047 1.016.64 1.429 1.426 1.429.786 0 1.371-.369 1.418-1.385.047-1.017-.553-1.841-1.338-1.841Zm7.406 0c-.786 0-1.385.824-1.338 1.841.047 1.017.634 1.385 1.418 1.385.785 0 1.473-.413 1.426-1.429-.046-1.017-.721-1.797-1.506-1.797Zm-3.703 4.013c-.974 0-1.907.048-2.77.135-.147.015-.241.168-.183.305.483 1.154 1.622 1.964 2.953 1.964 1.33 0 2.47-.81 2.953-1.964.057-.137-.037-.29-.184-.305-.863-.087-1.795-.135-2.769-.135Z";
    private const string WhatsAppPath = "M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.001-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413Z";
    private const string TelegramPath = "M11.944 0A12 12 0 0 0 0 12a12 12 0 0 0 12 12 12 12 0 0 0 12-12A12 12 0 0 0 12 0a12 12 0 0 0-.056 0zm4.962 7.224c.1-.002.321.023.465.14a.506.506 0 0 1 .171.325c.016.093.036.306.02.472-.18 1.898-.962 6.502-1.36 8.627-.168.9-.499 1.201-.82 1.23-.696.065-1.225-.46-1.9-.902-1.056-.693-1.653-1.124-2.678-1.8-1.185-.78-.417-1.21.258-1.91.177-.184 3.247-2.977 3.307-3.23.007-.032.014-.15-.056-.212s-.174-.041-.249-.024c-.106.024-1.793 1.14-5.061 3.345-.48.33-.913.49-1.302.48-.428-.008-1.252-.241-1.865-.44-.752-.245-1.349-.374-1.297-.789.027-.216.325-.437.893-.663 3.498-1.524 5.83-2.529 6.998-3.014 3.332-1.386 4.025-1.627 4.476-1.635z";

    // Fediverse instance software logos (Simple Icons, CC0). Resolved at
    // validate-time from each instance's nodeinfo `software.name`; unknown
    // software falls back to the generic fediverse glyph below.
    private const string MastodonPath = "M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z";
    private const string PeerTubePath = "M12 6.545v10.91L20.727 12M3.273 12v12L12 17.455M3.273 0v12L12 6.545";
    private const string PixelfedPath = "M12 24C5.3726 24 0 18.6274 0 12S5.3726 0 12 0s12 5.3726 12 12-5.3726 12-12 12m-.9526-9.3802h2.2014c2.0738 0 3.7549-1.6366 3.7549-3.6554S15.3226 7.309 13.2488 7.309h-3.1772c-1.1964 0-2.1663.9442-2.1663 2.1089v8.208z";
    private const string MisskeyPath = "M8.91076 16.8915c-1.03957.0038-1.93213-.6294-2.35267-1.366-.22516-.3217-.66989-.4364-.6761 0v2.0148c0 .8094-.29152 1.5097-.87581 2.1002-.56755.573-1.25977.8595-2.0779.8595-.80014 0-1.49298-.2865-2.07727-.8601C.28408 19.05 0 18.3497 0 17.5403V6.45968c0-.62378.17553-1.18863.52599-1.69455.36657-.52284.83426-.88582 1.4018-1.08769a2.84574 2.84574 0 0 1 1.00049-.17742c.90125 0 1.65239.35421 2.25281 1.06262l2.99713 3.51572c.06699.05016.263.43696.73192.43696.47016 0 .6916-.3868.75796-.43758l2.9717-3.5151c.6178-.70841 1.377-1.06262 2.2782-1.06262.3337 0 .6675.05893 1.0012.17742.5669.20187 1.0259.56422 1.377 1.08769.3665.50592.5501 1.07077.5501 1.69455V17.5403c0 .8094-.2915 1.5097-.8758 2.1002-.5675.573-1.2604.8595-2.0779.8595-.8008 0-1.493-.2865-2.0779-.8601-.5669-.5899-.8504-1.2902-.8504-2.0996v-2.0148c-.0496-.5499-.5303-.2032-.7009 0-.4503.8431-1.31369 1.3616-2.35264 1.366ZM21.447 8.60998c-.7009 0-1.3015-.24449-1.8019-.73348-.4838-.50571-.7257-1.11277-.7257-1.82118s.2419-1.30711.7257-1.79611c.5004-.50571 1.101-.75856 1.8019-.75856.7009 0 1.3017.25285 1.8025.75856.5003.489.7505 1.0877.7505 1.79611 0 .70841-.2502 1.31547-.7505 1.82118-.5008.48899-1.1016.73348-1.8025.73348Zm.0248.50655c.7009 0 1.2935.25285 1.7777.75856.5003.50571.7505 1.11301.7505 1.82181v6.2484c0 .7084-.2502 1.3155-.7505 1.8212-.4838.489-1.0764.7335-1.7777.7335-.7005 0-1.3011-.2445-1.8019-.7335-.5003-.5057-.7505-1.1128-.7505-1.8212v-6.2484c0-.7084.2502-1.3157.7505-1.82181.5004-.50571 1.101-.75856 1.8019-.75856Z";
    private const string LemmyPath = "M2.9595 4.2228a3.9132 3.9132 0 0 0-.332.019c-.8781.1012-1.67.5699-2.155 1.3862-.475.8-.5922 1.6809-.35 2.4971.2421.8162.8297 1.5575 1.6982 2.1449.0053.0035.0106.0076.0163.0114.746.4498 1.492.7431 2.2877.8994-.02.3318-.0272.6689-.006 1.0181.0634 1.0432.4368 2.0006.996 2.8492l-2.0061.8189a.4163.4163 0 0 0-.2276.2239.416.416 0 0 0 .0879.455.415.415 0 0 0 .2941.1231.4156.4156 0 0 0 .1595-.0312l2.2093-.9035c.408.4859.8695.9315 1.3723 1.318.0196.0151.0407.0264.0603.0423l-1.2918 1.7103a.416.416 0 0 0 .664.501l1.314-1.7385c.7185.4548 1.4782.7927 2.2294 1.0242.3833.7209 1.1379 1.1871 2.0202 1.1871.8907 0 1.6442-.501 2.0242-1.2072.744-.2347 1.4959-.5729 2.2073-1.0262l1.332 1.7606a.4157.4157 0 0 0 .7439-.1936.4165.4165 0 0 0-.0799-.3074l-1.3099-1.7345c.0083-.0075.0178-.0113.0261-.0188.4968-.3803.9549-.8175 1.3622-1.2939l2.155.8794a.4156.4156 0 0 0 .5412-.2276.4151.4151 0 0 0-.2273-.5432l-1.9438-.7928c.577-.8538.9697-1.8183 1.0504-2.8693.0268-.3507.0242-.6914.0079-1.0262.7905-.1572 1.5321-.4502 2.2737-.8974.0053-.0033.011-.0076.0163-.0113.8684-.5874 1.456-1.3287 1.6982-2.145.2421-.8161.125-1.697-.3501-2.497-.4849-.8163-1.2768-1.2852-2.155-1.3863a3.2175 3.2175 0 0 0-.332-.0189c-.7852-.0151-1.6231.229-2.4286.6942-.5926.342-1.1252.867-1.5433 1.4387-1.1699-.6703-2.6923-1.0476-4.5635-1.0785a15.5768 15.5768 0 0 0-.5111 0c-2.085.034-3.7537.43-5.0142 1.1449-.0033-.0038-.0045-.0114-.008-.0152-.4233-.5916-.973-1.1365-1.5835-1.489-.8055-.465-1.6434-.7083-2.4286-.6941Zm.2858.7365c.5568.042 1.1696.2358 1.7787.5875.485.28.9757.7554 1.346 1.2696a5.6875 5.6875 0 0 0-.4969.4085c-.9201.8516-1.4615 1.9597-1.668 3.2335-.6809-.1402-1.3183-.3945-1.984-.7948-.7553-.5128-1.2159-1.1225-1.4004-1.7445-.1851-.624-.1074-1.2712.2776-1.9196.3743-.63.9275-.9534 1.6118-1.0322a2.796 2.796 0 0 1 .5352-.0076Zm17.5094 0a2.797 2.797 0 0 1 .5353.0075c.6842.0786 1.2374.4021 1.6117 1.0322.385.6484.4627 1.2957.2776 1.9196-.1845.622-.645 1.2317-1.4004 1.7445-.6578.3955-1.2881.6472-1.9598.7888-.1942-1.2968-.7375-2.4338-1.666-3.302a5.5639 5.5639 0 0 0-.4709-.3923c.3645-.49.8287-.9428 1.2938-1.2113.6091-.3515 1.2219-.5454 1.7787-.5875ZM12.006 6.0036a14.832 14.832 0 0 1 .487 0c2.3901.0393 4.0848.67 5.1631 1.678 1.1501 1.0754 1.6423 2.6006 1.499 4.467-.1311 1.7079-1.2203 3.2281-2.652 4.324-.694.5313-1.4626.9354-2.2254 1.2294.0031-.0453.014-.0888.014-.1349.0029-1.1964-.9313-2.2133-2.2918-2.2133-1.3606 0-2.3222 1.0154-2.2918 2.2213.0013.0507.014.0972.0181.1471-.781-.2933-1.5696-.7013-2.2777-1.2456-1.4239-1.0945-2.4997-2.6129-2.6037-4.322-.1129-1.8567.3778-3.3382 1.5212-4.3965C7.5094 6.7 9.352 6.047 12.006 6.0036Zm-3.6419 6.8291c-.6053 0-1.0966.4903-1.0966 1.0966 0 .6063.4913 1.0986 1.0966 1.0986s1.0966-.4923 1.0966-1.0986c0-.6063-.4913-1.0966-1.0966-1.0966zm7.2819.0113c-.5998 0-1.0866.4859-1.0866 1.0866s.4868 1.0885 1.0866 1.0885c.5997 0 1.0865-.4878 1.0865-1.0885s-.4868-1.0866-1.0865-1.0866zM12 16.0835c1.0237 0 1.5654.638 1.5634 1.4829-.0018.7849-.6723 1.485-1.5634 1.485-.9167 0-1.54-.5629-1.5634-1.493-.0212-.8347.5397-1.4749 1.5634-1.4749Z";
    private const string PleromaPath = "M6.36 0A1.868 1.868 0 004.49 1.868V24h5.964V0zm7.113 0v12h4.168a1.868 1.868 0 001.868-1.868V0zm0 18.036V24h4.168a1.868 1.868 0 001.868-1.868v-4.096Z";
    private const string FirefishPath = "M16.771 0c-.68-.016-1.342.507-1.342 1.304V7.27c0 .719.582 1.301 1.3 1.301h5.967c1.16 0 1.74-1.401.92-2.22L17.65.383a1.275 1.275 0 0 0-.879-.383ZM6.573.106c-.672-.017-1.326.5-1.326 1.287v5.892c0 .71.575 1.285 1.285 1.285h5.892c1.145 0 1.718-1.384.908-2.194L7.44.484a1.259 1.259 0 0 0-.867-.379ZM1.286 10.287c-.71 0-1.286.576-1.286 1.286v11.142C0 23.425.576 24 1.286 24h11.143c.71 0 1.285-.575 1.285-1.285V11.573c0-.71-.575-1.286-1.285-1.286zm15.485 0c-.68-.017-1.342.507-1.342 1.304v5.966c0 .718.582 1.3 1.3 1.3h5.967c1.16 0 1.74-1.4.92-2.22L17.65 10.67a1.275 1.275 0 0 0-.879-.384zM3.43 17.144a1.714 1.714 0 1 1 0 3.428 1.714 1.714 0 0 1 0-3.428zm4.285 0a1.714 1.714 0 1 1 0 3.428 1.714 1.714 0 0 1 0-3.428z";

    /// <summary>Generic fediverse glyph (honeycomb) for instances whose software isn't in our icon set.</summary>
    public const string FediverseIconData = "M12 4A1.3 1.3 0 1 0 12 6.6 1.3 1.3 0 1 0 12 4ZM12 10.7A1.3 1.3 0 1 0 12 13.3 1.3 1.3 0 1 0 12 10.7ZM12 17.4A1.3 1.3 0 1 0 12 20 1.3 1.3 0 1 0 12 17.4ZM5.4 6.05A1.3 1.3 0 1 0 5.4 8.65 1.3 1.3 0 1 0 5.4 6.05ZM5.4 15.35A1.3 1.3 0 1 0 5.4 17.95 1.3 1.3 0 1 0 5.4 15.35ZM18.6 6.05A1.3 1.3 0 1 0 18.6 8.65 1.3 1.3 0 1 0 18.6 6.05ZM18.6 15.35A1.3 1.3 0 1 0 18.6 17.95 1.3 1.3 0 1 0 18.6 15.35Z";

    public static string LogoDataFor(SocialService service) => service switch
    {
        SocialService.YouTube => YouTubePath,
        SocialService.Twitch => TwitchPath,
        SocialService.X => XPath,
        SocialService.Instagram => InstagramPath,
        SocialService.TikTok => TikTokPath,
        SocialService.Facebook => FacebookPath,
        SocialService.Discord => DiscordPath,
        SocialService.Kick => KickPath,
        SocialService.Threads => ThreadsPath,
        SocialService.Bluesky => BlueskyPath,
        SocialService.GitHub => GitHubPath,
        SocialService.LinkedIn => LinkedInPath,
        SocialService.Pinterest => PinterestPath,
        SocialService.Snapchat => SnapchatPath,
        SocialService.Reddit => RedditPath,
        SocialService.WhatsApp => WhatsAppPath,
        SocialService.Telegram => TelegramPath,
        SocialService.Fediverse => FediverseIconData,
        _ => LinkIconData,
    };

    /// <summary>
    /// The logo for a fediverse instance given its nodeinfo software name
    /// (e.g. "peertube", "mastodon"). Unknown software gets the generic
    /// fediverse glyph.
    /// </summary>
    public static string LogoDataForFediverse(string? software) => software?.Trim().ToLowerInvariant() switch
    {
        "mastodon" => MastodonPath,
        "peertube" => PeerTubePath,
        "pixelfed" => PixelfedPath,
        "misskey" => MisskeyPath,
        "lemmy" => LemmyPath,
        "pleroma" => PleromaPath,
        "firefish" => FirefishPath,
        _ => FediverseIconData,
    };

    /// <summary>
    /// The canonical profile URL for a service handle. Fediverse handles
    /// (@user@domain) are recognized first — their identity carries its own host.
    /// </summary>
    public static string CanonicalUrlFor(SocialService service, string handle)
    {
        var input = handle.Trim();
        if (TryParseFediverse(input, out var fedUser, out var fedDomain))
            return $"https://{fedDomain}/@{fedUser}";
        var h = input.TrimStart('@');
        return service switch
        {
            SocialService.YouTube => $"https://www.youtube.com/@{h}",
            SocialService.Twitch => $"https://www.twitch.tv/{h}",
            SocialService.X => $"https://x.com/{h}",
            SocialService.Instagram => $"https://www.instagram.com/{h}",
            SocialService.TikTok => $"https://www.tiktok.com/@{h}",
            SocialService.Facebook => $"https://www.facebook.com/{h}",
            SocialService.Discord => $"https://discord.gg/{h}",
            SocialService.Kick => $"https://kick.com/{h}",
            SocialService.Threads => $"https://www.threads.net/@{h}",
            SocialService.Bluesky => $"https://bsky.app/profile/{h}",
            SocialService.GitHub => $"https://github.com/{h}",
            SocialService.LinkedIn => $"https://www.linkedin.com/in/{h}",
            SocialService.Pinterest => $"https://www.pinterest.com/{h}",
            SocialService.Snapchat => $"https://www.snapchat.com/add/{h}",
            SocialService.Reddit => $"https://www.reddit.com/user/{h}",
            SocialService.WhatsApp => $"https://wa.me/{h}",
            SocialService.Telegram => $"https://t.me/{h}",
            SocialService.Link or SocialService.Website => h.StartsWith("http") ? h : $"https://{h}",
            _ => $"https://{h}",
        };
    }

    /// <summary>
    /// Auto-detects the social service from a URL or fediverse handle. Supports
    /// full URLs (https://x.com/user), domain-only (x.com/user), and fediverse
    /// handles (@user@instance.tube). Returns Link/Website for unknown domains
    /// or bare handles — the caller can then ask which service it is.
    /// </summary>
    public static (SocialService service, string handle, string url) DetectService(string input)
    {
        var trimmed = input.Trim();

        // Fediverse handle: @user@domain — the full handle IS the identity.
        if (TryParseFediverse(trimmed, out var fedUser, out var fedDomain))
            return (SocialService.Fediverse, trimmed, $"https://{fedDomain}/@{fedUser}");

        // Strip protocol for domain parsing
        var url = trimmed;
        if (!trimmed.StartsWith("http", StringComparison.OrdinalIgnoreCase))
            url = $"https://{trimmed}";

        try
        {
            var uri = new Uri(url);
            var domain = uri.Host.ToLowerInvariant();
            var path = uri.AbsolutePath.Trim('/');

            return domain switch
            {
                "youtube.com" or "www.youtube.com" or "youtu.be" => (SocialService.YouTube, path, url),
                "twitch.tv" or "www.twitch.tv" => (SocialService.Twitch, path, url),
                "x.com" or "twitter.com" => (SocialService.X, path, url),
                "instagram.com" or "www.instagram.com" => (SocialService.Instagram, path, url),
                "tiktok.com" or "www.tiktok.com" => (SocialService.TikTok, path, url),
                "facebook.com" or "www.facebook.com" or "fb.com" => (SocialService.Facebook, path, url),
                "discord.gg" or "discord.com" => (SocialService.Discord, path, url),
                "kick.com" => (SocialService.Kick, path, url),
                "threads.net" or "www.threads.net" => (SocialService.Threads, path, url),
                "bsky.app" => (SocialService.Bluesky, path, url),
                "github.com" => (SocialService.GitHub, path, url),
                "linkedin.com" or "www.linkedin.com" => (SocialService.LinkedIn, path, url),
                "pinterest.com" or "www.pinterest.com" => (SocialService.Pinterest, path, url),
                "snapchat.com" => (SocialService.Snapchat, path, url),
                "reddit.com" or "www.reddit.com" => (SocialService.Reddit, path, url),
                "wa.me" or "whatsapp.com" => (SocialService.WhatsApp, path, url),
                "t.me" => (SocialService.Telegram, path, url),
                _ => (SocialService.Website, path, url),
            };
        }
        catch
        {
            return (SocialService.Link, trimmed.TrimStart('@'), SocialServiceIcons.CanonicalUrlFor(SocialService.Link, trimmed));
        }
    }

    /// <summary>True when the input is a fediverse handle (@user@domain); out the parts.</summary>
    private static bool TryParseFediverse(string input, out string user, out string domain)
    {
        user = domain = string.Empty;
        if (string.IsNullOrWhiteSpace(input) || input[0] != '@') return false;
        var secondAt = input.IndexOf('@', 1);
        if (secondAt <= 1 || secondAt == input.Length - 1) return false;
        user = input[1..secondAt];
        domain = input[(secondAt + 1)..];
        return true;
    }
}