Use config.domain in place of hardcoded value

src/invidious.cr

@@ -364,7 +364,7 @@ get "/watch" do |env|
   video.description = replace_links(video.description)
   description = video.short_description
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
   host_params = env.request.query_params
   host_params.delete_all("v")
 
@@ -466,7 +466,7 @@ get "/embed/:id" do |env|
   video.description = replace_links(video.description)
   description = video.short_description
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
   host_params = env.request.query_params
   host_params.delete_all("v")
 
@@ -552,14 +552,16 @@ get "/opensearch.xml" do |env|
   locale = LOCALES[env.get("locale").as(String)]?
   env.response.content_type = "application/opensearchdescription+xml"
 
+  host = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
+
   XML.build(indent: "  ", encoding: "UTF-8") do |xml|
     xml.element("OpenSearchDescription", xmlns: "http://a9.com/-/spec/opensearch/1.1/") do
       xml.element("ShortName") { xml.text "Invidious" }
       xml.element("LongName") { xml.text "Invidious Search" }
       xml.element("Description") { xml.text "Search for videos, channels, and playlists on Invidious" }
       xml.element("InputEncoding") { xml.text "UTF-8" }
-      xml.element("Image", width: 48, height: 48, type: "image/x-icon") { xml.text "https://invidio.us/favicon.ico" }
-      xml.element("Url", type: "text/html", method: "get", template: "https://invidio.us/search?q={searchTerms}")
+      xml.element("Image", width: 48, height: 48, type: "image/x-icon") { xml.text "#{host}/favicon.ico" }
+      xml.element("Url", type: "text/html", method: "get", template: "#{host}/search?q={searchTerms}")
     end
   end
 end
@@ -1367,7 +1369,7 @@ get "/subscription_manager" do |env|
   subscriptions.sort_by! { |channel| channel.author.downcase }
 
   if action_takeout
-    host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+    host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
 
     if format == "json"
       env.response.content_type = "application/json"
@@ -1915,7 +1917,7 @@ get "/feed/channel/:ucid" do |env|
   videos, count = get_60_videos(ucid, page, auto_generated)
   videos.select! { |video| !video.paid }
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
   path = env.request.path
 
   feed = XML.build(indent: "  ", encoding: "UTF-8") do |xml|
@@ -2037,7 +2039,7 @@ get "/feed/private" do |env|
     videos = videos[0..max_results]
   end
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
   path = env.request.path
   query = env.request.query.not_nil!
 
@@ -2084,7 +2086,7 @@ get "/feed/playlist/:plid" do |env|
 
   plid = env.params.url["plid"]
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
   path = env.request.path
 
   client = make_client(YT_URL)
@@ -2521,7 +2523,8 @@ get "/api/v1/videos/:id" do |env|
       end
 
       if video.player_response["streamingData"]?.try &.["hlsManifestUrl"]?
-        host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"]?)
+        host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
+        
         host_params = env.request.query_params
         host_params.delete_all("v")
 
@@ -3536,7 +3539,8 @@ get "/api/manifest/hls_variant/*" do |env|
   env.response.content_type = "application/x-mpegURL"
   env.response.headers.add("Access-Control-Allow-Origin", "*")
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"])
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
+
   manifest = manifest.body
   manifest.gsub("https://www.youtube.com", host_url)
 end
@@ -3549,7 +3553,7 @@ get "/api/manifest/hls_playlist/*" do |env|
     halt env, status_code: manifest.status_code
   end
 
-  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, env.request.headers["Host"])
+  host_url = make_host_url(Kemal.config.ssl || CONFIG.https_only, CONFIG.domain)
 
   manifest = manifest.body.gsub("https://www.youtube.com", host_url)
   manifest = manifest.gsub(/https:\/\/r\d---.{11}\.c\.youtube\.com/, host_url)

src/invidious/helpers/helpers.cr

@@ -15,7 +15,10 @@ class Config
     https_only:   Bool?,
     hmac_key:     String?,
     full_refresh: Bool,
-    domain:       String?,
+    domain:       {
+      type:    String?,
+      default: "invidio.us",
+    },
   })
 end
 

src/invidious/helpers/utils.cr

@@ -205,8 +205,6 @@ def make_host_url(ssl, host)
     scheme = "http://"
   end
 
-  host ||= "invidio.us"
-
   return "#{scheme}#{host}"
 end
 

src/invidious/videos.cr

@@ -137,7 +137,7 @@ BYPASS_REGIONS = {
 }
 
 VIDEO_THUMBNAILS = {
-  {name: "maxres", host: "invidio.us", url: "maxres", height: 720, width: 1280},
+  {name: "maxres", host: "#{CONFIG.domain}", url: "maxres", height: 720, width: 1280},
   {name: "maxresdefault", host: "i.ytimg.com", url: "maxresdefault", height: 720, width: 1280},
   {name: "sddefault", host: "i.ytimg.com", url: "sddefault", height: 480, width: 640},
   {name: "high", host: "i.ytimg.com", url: "hqdefault", height: 360, width: 480},