Switch from HOST and SCHEME to BASE_URL env var

.env.production.sample

@@ -1,4 +1,6 @@
-HOST=localhost:3000
+## Base URL of your asciinema web app instance
+BASE_URL=http://localhost:3000
+
 MAILNAME=localhost
 
 # Run `docker-compose run --rm web bundle exec rake secret`

config/application.rb

@@ -67,7 +67,7 @@ module Asciinema
       )
     end
 
-    config.action_mailer.default_url_options = { protocol: CFG.scheme, host: CFG.host }
+    config.action_mailer.default_url_options = { protocol: CFG.scheme, host: CFG.hostname_with_port }
 
     if CFG.smtp_settings
       config.action_mailer.smtp_settings = CFG.smtp_settings

config/cfg.rb

@@ -1,7 +1,10 @@
+require 'uri'
+
 module Asciinema
   class Configuration
     include Virtus.model
 
+    attribute :base_url,                       String, default: 'http://localhost:3000'
     attribute :bugsnag_api_key,                String
     attribute :aws_access_key_id,              String
     attribute :aws_secret_access_key,          String
@@ -10,8 +13,6 @@ module Asciinema
     attribute :carrierwave_storage_dir_prefix, String, default: 'uploads/'
     attribute :google_analytics_id,            String
     attribute :home_asciicast_id,              Integer
-    attribute :scheme,                         String, default: 'http'
-    attribute :host,                           String, default: 'localhost:3000'
     attribute :secret_key_base,                String
     attribute :admin_ids,                      Array[Integer]
     attribute :smtp_settings,                  Hash
@@ -25,6 +26,21 @@ module Asciinema
       end
     end
 
+    def scheme
+      URI.parse(base_url).scheme
+    end
+
+    def hostname_with_port
+      uri = URI.parse(base_url)
+      hwp = uri.hostname
+
+      if uri.port != uri.default_port
+        hwp = "#{hwp}:#{uri.port}"
+      end
+
+      hwp
+    end
+
     def ssl?
       scheme == 'https'
     end