Break util.cr into multiple files

src/util/web.cr

@@ -0,0 +1,68 @@
+# Web related helper functions/macros
+
+macro layout(name)
+  base_url = Config.current.base_url
+  begin
+    is_admin = false
+    if token = env.session.string? "token"
+      is_admin = @context.storage.verify_admin token
+    end
+    page = {{name}}
+    render "src/views/#{{{name}}}.html.ecr", "src/views/layout.html.ecr"
+  rescue e
+    message = e.to_s
+    @context.error message
+    render "src/views/message.html.ecr", "src/views/layout.html.ecr"
+  end
+end
+
+macro send_img(env, img)
+  send_file {{env}}, {{img}}.data, {{img}}.mime
+end
+
+macro get_username(env)
+  # if the request gets here, it has gone through the auth handler, and
+  #   we can be sure that a valid token exists, so we can use not_nil! here
+  token = env.session.string "token"
+  (@context.storage.verify_token token).not_nil!
+end
+
+def send_json(env, json)
+  env.response.content_type = "application/json"
+  env.response.print json
+end
+
+def send_attachment(env, path)
+  send_file env, path, filename: File.basename(path), disposition: "attachment"
+end
+
+def redirect(env, path)
+  base = Config.current.base_url
+  env.redirect File.join base, path
+end
+
+def hash_to_query(hash)
+  hash.map { |k, v| "#{k}=#{v}" }.join("&")
+end
+
+def request_path_startswith(env, ary)
+  ary.each do |prefix|
+    if env.request.path.starts_with? prefix
+      return true
+    end
+  end
+  false
+end
+
+def requesting_static_file(env)
+  request_path_startswith env, STATIC_DIRS
+end
+
+macro render_xml(path)
+  base_url = Config.current.base_url
+  send_file env, ECR.render({{path}}).to_slice, "application/xml"
+end
+
+macro render_component(filename)
+  render "src/views/components/#{{{filename}}}.html.ecr"
+end