Use singleton in various classes

src/routes/admin.cr

@@ -1,7 +1,7 @@
 require "./router"
 
 class AdminRouter < Router
-  def setup
+  def initialize
     get "/admin" do |env|
       layout "admin"
     end
@@ -96,7 +96,7 @@ class AdminRouter < Router
     end
 
     get "/admin/downloads" do |env|
-      base_url = @context.config.mangadex["base_url"]
+      base_url = Config.current.mangadex["base_url"]
       layout "download-manager"
     end
   end

src/routes/api.cr

@@ -3,7 +3,7 @@ require "../mangadex/*"
 require "../upload"
 
 class APIRouter < Router
-  def setup
+  def initialize
     get "/api/page/:tid/:eid/:page" do |env|
       begin
         tid = env.params.url["tid"]
@@ -123,7 +123,7 @@ class APIRouter < Router
     get "/api/admin/mangadex/manga/:id" do |env|
       begin
         id = env.params.url["id"]
-        api = MangaDex::API.new @context.config.mangadex["api_url"].to_s
+        api = MangaDex::API.default
         manga = api.get_manga id
         send_json env, manga.to_info_json
       rescue e
@@ -230,7 +230,7 @@ class APIRouter < Router
             end
 
             ext = File.extname filename
-            upload = Upload.new @context.config.upload_path, @context.logger
+            upload = Upload.new Config.current.upload_path
             url = upload.path_to_url upload.save "img", ext, part.body
 
             if url.nil?

src/routes/main.cr

@@ -1,7 +1,7 @@
 require "./router"
 
 class MainRouter < Router
-  def setup
+  def initialize
     get "/login" do |env|
       render "src/views/login.ecr"
     end
@@ -59,7 +59,7 @@ class MainRouter < Router
     end
 
     get "/download" do |env|
-      base_url = @context.config.mangadex["base_url"]
+      base_url = Config.current.mangadex["base_url"]
       layout "download"
     end
   end

src/routes/reader.cr

@@ -1,7 +1,7 @@
 require "./router"
 
 class ReaderRouter < Router
-  def setup
+  def initialize
     get "/reader/:title/:entry" do |env|
       begin
         title = (@context.library.get_title env.params.url["title"]).not_nil!

src/routes/router.cr

@@ -1,6 +1,3 @@
-require "../context"
-
 class Router
-  def initialize(@context : Context)
-  end
+  @context : Context = Context.default
 end