From f5949b1bca9970442edf8e38fcac9a02a35731d1 Mon Sep 17 00:00:00 2001
From: Mia Winter <mia@miawinter.de>
Date: Wed, 18 Sep 2024 13:37:11 +0200
Subject: [PATCH] chore centralized OpenGraph logic

---
 Wave/Components/OpenGraph.razor         | 63 +++++++++++++++++++++++++
 Wave/Components/Pages/ArticleView.razor | 21 +--------
 Wave/Components/Pages/Home.razor        | 22 ++-------
 Wave/Components/Pages/UserView.razor    | 14 +-----
 4 files changed, 68 insertions(+), 52 deletions(-)
 create mode 100644 Wave/Components/OpenGraph.razor

diff --git a/Wave/Components/OpenGraph.razor b/Wave/Components/OpenGraph.razor
new file mode 100644
index 0000000..80751ea
--- /dev/null
+++ b/Wave/Components/OpenGraph.razor
@@ -0,0 +1,63 @@
+@using Microsoft.Extensions.Options
+@using Wave.Data
+@using Wave.Utilities
+
+@inject IOptions<Customization> Customizations
+@inject IOptions<Features> Features
+@inject NavigationManager Navigation
+
+@if (Subject is null) {
+	<meta property="og:type" content="website">
+	<meta property="og:title" content="@Customizations.Value.AppName">
+	<meta property="og:site_name" content="@Customizations.Value.AppName">
+	<meta property="og:url" content="@Navigation.BaseUri">
+	@if (!string.IsNullOrWhiteSpace(Customizations.Value.LogoLink)) {
+		<meta property="og:image" content="@Customizations.Value.LogoLink">
+	} else {
+		<meta property="og:image" content="@Navigation.ToAbsoluteUri("/img/logo.png")">
+	}
+	@if (!string.IsNullOrWhiteSpace(Customizations.Value.AppDescription)) {
+		<meta name="description" content="@Customizations.Value.AppDescription">
+		<meta property="og:description" content="@Customizations.Value.AppDescription">
+	}
+	@if (Features.Value.Rss) {
+		<link rel="alternate" type="application/rss+xml" title="RSS Feed on @Customizations.Value.AppName" href="@Navigation.ToAbsoluteUri("/rss/rss.xml")">
+		<link rel="alternate" type="application/atom+xml" title="Atom RSS Feed on @Customizations.Value.AppName" href="@Navigation.ToAbsoluteUri("/rss/atom.xml")">
+	}
+} else if (Subject is Article article) {
+	<meta property="og:title" content="@article.Title">
+	<meta property="og:description" content="@string.Format(Localizer!["Meta_Description"], Customizations.Value.AppName, article.BodyPlain[..Math.Min(80, article.BodyPlain.Length)] + "... ")">
+	<meta property="og:url" content="@Navigation.ToAbsoluteUri("/article/" + article.Id)">
+	<meta property="og:image" content="@Navigation.ToAbsoluteUri("/api/user/pfp/" + article.Author.Id)">
+	<meta property="og:type" content="article">
+	<meta property="og:article:author" content="@article.Author.Name">
+	<meta property="og:article:published_time" content="@article.PublishDate.ToString("u")">
+	@if (article.LastModified.HasValue) {
+		<meta property="og:article:modified_time" content="@article.LastModified.Value.ToString("u")">
+	}
+	<meta property="og:site_name" content="@Customizations.Value.AppName">
+	@if (Features.Value.Rss) {
+		<link rel="alternate" type="application/rss+xml" title="RSS Feed on @Customizations.Value.AppName" href="@Navigation.ToAbsoluteUri("/rss/rss.xml")">
+		<link rel="alternate" type="application/atom+xml" title="Atom RSS Feed on @Customizations.Value.AppName" href="@Navigation.ToAbsoluteUri("/rss/atom.xml")">
+	}
+
+	<link rel="canonical" href="@ArticleUtilities.GenerateArticleLink(article, new Uri(Navigation.BaseUri))" />
+} else if (Subject is ApplicationUser user) {
+	<meta property="og:title" content="@string.Format(Localizer!["Meta_OpenGraph_Title"], user.Name, Customizations.Value.AppName)">
+	<meta property="og:description" content="@string.Format(Localizer["Meta_Description"], user.Name, Customizations.Value.AppName)">
+	<meta property="og:type" content="profile">
+	<meta property="og:image" content="@Navigation.ToAbsoluteUri("/api/user/pfp/" + user.Id)">
+
+	<meta property="og:site_name" content="@Customizations.Value.AppName">
+	@if (Features.Value.Rss) {
+		<link rel="alternate" type="application/rss+xml" title="RSS Feed on @Customizations.Value.AppName | User @user.FullName" href="@Navigation.ToAbsoluteUri("/rss/rss.xml?author=@user.Id")">
+		<link rel="alternate" type="application/atom+xml" title="Atom RSS Feed on @Customizations.Value.AppName | User @user.FullName" href="@Navigation.ToAbsoluteUri("/rss/atom.xml?author=@user.Id")">
+	}
+}
+
+@code {
+	[Parameter] 
+    public object? Subject { get; set; }
+	[Parameter] 
+    public IStringLocalizer? Localizer { get; set; }
+}
\ No newline at end of file
diff --git a/Wave/Components/Pages/ArticleView.razor b/Wave/Components/Pages/ArticleView.razor
index 3ac4b70..81ad399 100644
--- a/Wave/Components/Pages/ArticleView.razor
+++ b/Wave/Components/Pages/ArticleView.razor
@@ -28,26 +28,7 @@
 		<meta name="author" content="@Article.Author.Name">
 		<meta name="description" content="@string.Format(Localizer["Meta_Description"], Customizations.Value.AppName, Article.BodyPlain[..Math.Min(80, Article.BodyPlain.Length)] + "... ")">
 		
-		<!-- Open Graph -->
-		<meta property="og:title" content="@Article.Title">
-		<meta property="og:description" content="@string.Format(Localizer["Meta_Description"], Customizations.Value.AppName, Article.BodyPlain[..Math.Min(80, Article.BodyPlain.Length)] + "... ")">
-		<meta property="og:url" content="@Navigation.ToAbsoluteUri("/article/" + Article.Id)">
-		<meta property="og:image" content="@Navigation.ToAbsoluteUri("/api/user/pfp/" + Article.Author.Id)">
-		<meta property="og:type" content="article">
-		<meta property="og:article:author" content="@Article.Author.Name">
-		<meta property="og:article:published_time" content="@Article.PublishDate.ToString("u")">
-		@if (Article.LastModified.HasValue) {
-			<meta property="og:article:modified_time" content="@Article.LastModified.Value.ToString("u")">
-		}
-		<meta property="og:site_name" content="@Customizations.Value.AppName">
-		@if (Features.Value.Rss) { 
-			<link rel="alternate" type="application/rss+xml" title="RSS Feed on @Customizations.Value.AppName" href="/rss/rss.xml">
-			<link rel="alternate" type="application/atom+xml" title="Atom RSS Feed on @Customizations.Value.AppName" href="/rss/atom.xml">
-		}
-		
-		@if (Article is not null) {
-			<link rel="canonical" href="@ArticleUtilities.GenerateArticleLink(Article, new Uri(Navigation.BaseUri))" />
-		}
+		<OpenGraph Subject="Article" Localizer="Localizer" />
 	</HeadContent>
 }
 
diff --git a/Wave/Components/Pages/Home.razor b/Wave/Components/Pages/Home.razor
index f8ed231..e9b44e9 100644
--- a/Wave/Components/Pages/Home.razor
+++ b/Wave/Components/Pages/Home.razor
@@ -8,28 +8,12 @@
 @inject IOptions<Customization> Customizations
 @inject IOptions<Features> Features
 @inject NavigationManager Navigation
-@inject IDbContextFactory<ApplicationDbContext> ContextFactory;
+@inject IDbContextFactory<ApplicationDbContext> ContextFactory
 @inject IStringLocalizer<Home> Localizer
 @inject IMessageDisplay Message
 
 <HeadContent>
-	<meta property="og:type" content="website">
-	<meta property="og:title" content="@Customizations.Value.AppName">
-	<meta property="og:site_name" content="@Customizations.Value.AppName">
-	<meta property="og:url" content="@Navigation.BaseUri">
-	@if (!string.IsNullOrWhiteSpace(Customizations.Value.LogoLink)) {
-		<meta property="og:image" content="@Customizations.Value.LogoLink">
-	} else {
-		<meta property="og:image" content="@Navigation.ToAbsoluteUri("/img/logo.png")">
-	}
-	@if (!string.IsNullOrWhiteSpace(Customizations.Value.AppDescription)) {
-		<meta name="description" content="@Customizations.Value.AppDescription">
-		<meta property="og:description" content="@Customizations.Value.AppDescription">
-	}
-	@if (Features.Value.Rss) { 
-		<link rel="alternate" type="application/rss+xml" title="RSS Feed on @Customizations.Value.AppName" href="/rss/rss.xml">
-		<link rel="alternate" type="application/atom+xml" title="Atom RSS Feed on @Customizations.Value.AppName" href="/rss/atom.xml">
-	}
+	<OpenGraph />
 	
 	@if (Page >= TotalPages) {
 		<meta name="robots" content="noindex">
@@ -40,7 +24,7 @@
 	}
 </HeadContent>
 
-<PageTitle>@(Customizations.Value.AppName ?? "Wave")</PageTitle>
+<PageTitle>@(Customizations.Value.AppName)</PageTitle>
 
 <div class="grid grid-cols-1 sm:grid-cols-2 xl:grid-cols-4 xl:grid-rows-4 gap-4">
 	<div class="sm:col-span-2 flex flex-col">
diff --git a/Wave/Components/Pages/UserView.razor b/Wave/Components/Pages/UserView.razor
index 88178be..f200966 100644
--- a/Wave/Components/Pages/UserView.razor
+++ b/Wave/Components/Pages/UserView.razor
@@ -4,10 +4,8 @@
 @using Microsoft.Extensions.Options
 @using Wave.Utilities
 
-@inject NavigationManager Navigation
 @inject IDbContextFactory<ApplicationDbContext> ContextFactory
 @inject IOptions<Customization> Customizations
-@inject IOptions<Features> Features
 @inject IStringLocalizer<UserView> Localizer
 @inject IMessageDisplay Message
 
@@ -16,17 +14,7 @@
 		<meta name="author" content="@User.Name">
 		<meta name="description" content="@string.Format(Localizer["Meta_Description"], User.Name, Customizations.Value.AppName)">
 
-		<!-- Open Graph -->
-		<meta property="og:title" content="@string.Format(Localizer["Meta_OpenGraph_Title"], User.Name, Customizations.Value.AppName)">
-		<meta property="og:description" content="@string.Format(Localizer["Meta_Description"], User.Name, Customizations.Value.AppName)">
-		<meta property="og:type" content="profile">
-		<meta property="og:image" content="@Navigation.ToAbsoluteUri("/api/user/pfp/" + User.Id)">
-
-		<meta property="og:site_name" content="@Customizations.Value.AppName">
-		@if (Features.Value.Rss) {
-			<link rel="alternate" type="application/rss+xml" title="RSS Feed on @Customizations.Value.AppName | User @User.FullName" href="/rss/rss.xml?author=@User.Id">
-			<link rel="alternate" type="application/atom+xml" title="Atom RSS Feed on @Customizations.Value.AppName | User @User.FullName" href="/rss/atom.xml?author=@User.Id">
-		}
+		<OpenGraph Subject="User" Localizer="Localizer" />
 	}
 	@if (User is null) {
 		<meta name="robots" content="noindex">