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namespace Pilgaard.Blog.Features.Feed; | ||
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public static class DateOnlyExtensions | ||
{ | ||
public static DateTimeOffset ToDateTimeOffset(this DateOnly dateOnly) | ||
=> new(dateOnly.ToDateTime(new TimeOnly(0, 0, 0))); | ||
} |
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using Microsoft.SyndicationFeed; | ||
using System.Xml; | ||
using Microsoft.SyndicationFeed.Atom; | ||
using Pilgaard.Blog.Features.BlogPost; | ||
using Pilgaard.Blog.Features.SEO; | ||
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namespace Pilgaard.Blog.Features.Feed; | ||
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public static class FeedApi | ||
{ | ||
public static WebApplication MapRssFeed(this WebApplication app) | ||
{ | ||
app.MapGet("/feed.xml", async (HttpContext context) => | ||
{ | ||
context.Response.ContentType = "application/xml"; | ||
var stringWriter = new Utf8StringWriter(); | ||
await using var xmlWriter = XmlWriter.Create(stringWriter, new XmlWriterSettings | ||
{ | ||
Async = true, | ||
Indent = true | ||
}); | ||
var writer = new AtomFeedWriter(xmlWriter); | ||
await writer.WriteTitle(DefaultMetadata.Title); | ||
var lastUpdated = BlogPostData | ||
.AllBlogPostSeries | ||
.SelectMany(blogPostSeries => blogPostSeries.BlogPosts.Select(blogPost => blogPost.LastUpdated)) | ||
.Max(); | ||
await writer.WriteUpdated(lastUpdated); | ||
await writer.Write(new SyndicationLink(new Uri(FeedConstants.BlogUrl))); | ||
foreach (var blogPostSeries in BlogPostData.AllBlogPostSeries) | ||
{ | ||
foreach (var blogPost in blogPostSeries.BlogPosts) | ||
{ | ||
var link = $"{FeedConstants.BlogUrl}/{blogPostSeries.GetRelativePath(blogPost)}"; | ||
var item = new SyndicationItem | ||
{ | ||
Id = link, | ||
Title = blogPost.Title, | ||
Description = blogPost.Description, | ||
Published = blogPost.PublishDate, | ||
LastUpdated = blogPost.LastUpdated, | ||
}; | ||
item.AddLink(new SyndicationLink(new Uri(link))); | ||
item.AddContributor(new SyndicationPerson("Niels Pilgaard Grøndahl", "niels.pilgaard@hotmail.com")); | ||
foreach (var blogPostTag in blogPost.Tags) | ||
{ | ||
item.AddCategory(new SyndicationCategory(blogPostTag)); | ||
} | ||
await writer.Write(item); | ||
} | ||
} | ||
// This closes the <content> element | ||
await xmlWriter.WriteEndElementAsync(); | ||
await xmlWriter.FlushAsync(); | ||
return stringWriter.ToString(); | ||
}); | ||
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return app; | ||
} | ||
} |
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namespace Pilgaard.Blog.Features.Feed; | ||
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internal static class FeedConstants | ||
{ | ||
internal const string BlogUrl = "https://pilgaard-blog.azurewebsites.net"; | ||
} |
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using System.Text; | ||
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namespace Pilgaard.Blog.Features.Feed; | ||
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internal sealed class Utf8StringWriter : StringWriter | ||
{ | ||
public override Encoding Encoding => Encoding.UTF8; | ||
} |
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Making an RSS feed is (apparently) fairly | ||
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## Summary | ||
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We learned how to use MudBlazor to keep dark/light mode settings in sync with system preference. | ||
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Thank you [TDroogers](https://github.com/TDroogers) for [adding this feature to MudBlazor](https://github.com/MudBlazor/MudBlazor/pull/6320)! | ||
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### See the code | ||
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[Pull Request implementing the changes in this post](https://github.com/NielsPilgaard/Pilgaard.Blog/pull/29) | ||
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### The state of the blog | ||
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![State of the blog](https://user-images.githubusercontent.com/21295394/224152139-cd53b1a6-a89f-4b85-b10a-4beae4b83a22.png) |
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