fix csp + progress proxy + allow omit public_url

src/invidious/config.cr

@@ -82,6 +82,9 @@ class Config
 
     @[YAML::Field(converter: Preferences::URIConverter)]
     property public_url : URI = URI.parse("")
+
+    # Indicates if this companion instance uses the built-in proxy
+    property builtin_proxy : Bool = false
   end
 
   # Number of threads to use for crawling videos from channels (for updating subscriptions)
@@ -271,6 +274,14 @@ class Config
         puts "Config: The value of 'invidious_companion_key' needs to be a size of 16 characters."
         exit(1)
       end
+
+      # Set public_url to built-in proxy path when omitted
+      config.invidious_companion.each do |companion|
+        if companion.public_url.to_s.empty?
+          companion.public_url = URI.parse("/companion")
+          companion.builtin_proxy = true
+        end
+      end
     elsif config.signature_server
       puts("WARNING: inv-sig-helper is deprecated. Please switch to Invidious companion: https://docs.invidious.io/companion-installation/")
     else