Artifact 5cb9aa9fc3c21cb221fd70ee351b6c27ecfcb3d96ecb4f2d5a69b025726cf15c:

• File PointlessWaymarks.FeedReader/Feeds/Itunes/ItunesChannel.cs — part of check-in [fb382a33f7] at 2025-01-26 06:23:47 on branch main — Move FeedReader to the Tools Project (user: charl size: 3461)

using System.Xml.Linq;

namespace PointlessWaymarks.FeedReader.Feeds.Itunes;

/// <summary>
/// The basic itunes: elements that are part of the channel xml element of an rss2.0 feed
/// </summary>
public class ItunesChannel
{
    internal const string? NAMESPACEPREFIX = "itunes";

    /// <summary>
    /// Initializes a new instance of the <see cref="ItunesChannel"/> class.
    /// </summary>
    /// <param name="channelElement"></param>
    public ItunesChannel(XElement? channelElement)
    {
        Author = channelElement.GetValue(NAMESPACEPREFIX, "author");
        Block = channelElement.GetValue(NAMESPACEPREFIX, "block").EqualsIgnoreCase("yes");
        Categories = GetItunesCategories(channelElement);

        var imageElement = channelElement.GetElement(NAMESPACEPREFIX, "image");
        if (imageElement != null)
        {
            Image = new ItunesImage(imageElement);
        }

        var explicitValue = channelElement.GetValue(NAMESPACEPREFIX, "explicit");
        Explicit = explicitValue.EqualsIgnoreCase("yes", "explicit", "true");

        Complete = channelElement.GetValue(NAMESPACEPREFIX, "complete").EqualsIgnoreCase("yes");

        if (Uri.TryCreate(channelElement.GetValue(NAMESPACEPREFIX, "new-feed-url"), UriKind.Absolute,
                out var newFeedUrl))
        {
            NewFeedUrl = newFeedUrl;
        }

        var ownerElement = channelElement.GetElement(NAMESPACEPREFIX, "owner");

        if (ownerElement != null)
        {
            Owner = new ItunesOwner(ownerElement);
        }

        Subtitle = channelElement.GetValue(NAMESPACEPREFIX, "subtitle");
        Summary = channelElement.GetValue(NAMESPACEPREFIX, "summary");
    }

    /// <summary>
    /// The itunes:author element
    /// </summary>
    public string? Author { get; }

    /// <summary>
    /// The itunes:block element
    /// </summary>
    public bool Block { get; }

    /// <summary>
    /// The itunes:category elements
    /// </summary>
    public List<ItunesCategory> Categories { get; private set; }

    /// <summary>
    /// The itunes:image element
    /// </summary>
    public ItunesImage? Image { get; }

    /// <summary>
    /// The itunes:explicit element
    /// </summary>
    public bool Explicit { get; }

    /// <summary>
    /// The itunes:complete element
    /// </summary>
    public bool Complete { get; }

    /// <summary>
    /// The itunes:new-feed-url element
    /// </summary>
    public Uri? NewFeedUrl { get; }

    /// <summary>
    /// The itunes:owner element
    /// </summary>
    public ItunesOwner? Owner { get; }

    /// <summary>
    /// The itunes:subtitle element
    /// </summary>
    public string? Subtitle { get; }

    /// <summary>
    /// The itunes:summary element
    /// </summary>
    public string? Summary { get; }

    /// <summary>
    /// Sets the itunes categories
    /// </summary>
    /// <param name="element">the channel element</param>
    /// <returns>the itunes:categories</returns>
    private List<ItunesCategory> GetItunesCategories(XElement? element)
    {
        var categoryElements = element.GetElements(NAMESPACEPREFIX, "category");
        if (categoryElements == null) return [];

        var query = from categoryElement in categoryElements
            let children = GetItunesCategories(categoryElement)
            select new ItunesCategory(categoryElement.GetAttributeValue("text"), children);

        return query.ToList();
    }
}