move app config to separate module with main

Procfile

@@ -1 +1 @@
-web: lein ring server-headless
+web: java $JVM_OPTS -cp target/aretherecookies.jar aretherecookies.app

project.clj

@@ -2,9 +2,8 @@
   :description "where cookies can be found"
   :url "http://www.aretherecookies.com"
   :min-lein-version "2.0.0"
-  :main aretherecookies.handler
-  :dependencies [
-    [org.clojure/clojure "1.8.0"]
+  :main aretherecookies.app
+  :dependencies [[org.clojure/clojure "1.8.0"]
                  [environ "1.1.0"]
                  [compojure "1.5.1"]
                  [ring/ring-defaults "0.2.1"]
@@ -14,9 +13,9 @@
                  [ring-middleware-format "0.7.2"]
                  [org.clojure/data.json "0.2.6"]
                  [ring/ring-json "0.4.0"]
-  ]
+                 [ring/ring-jetty-adapter "1.4.0"]]
   :plugins [[lein-ring "0.9.7"] [lein-environ "1.1.0"]]
-  :ring {:handler aretherecookies.handler/app}
+  :ring {:handler aretherecookies.app/app}
   :profiles
   {:dev {:dependencies [[javax.servlet/servlet-api "2.5"]
                         [ring/ring-mock "0.3.0"]]}

src/aretherecookies/app.clj

@@ -0,0 +1,15 @@
+(ns aretherecookies.app
+  (:gen-class)
+  (:require [aretherecookies.handler :refer [app-routes]]
+            [environ.core :refer [env]]
+            [compojure.handler :refer [site]]
+            [ring.adapter.jetty :as jetty]
+            [ring.middleware.defaults :refer [wrap-defaults api-defaults]]))
+
+(def app-config (assoc-in api-defaults [:security :anti-forgery] false))
+
+(def app (wrap-defaults app-routes app-config))
+
+(defn -main [& [port]]
+  (let [port (Integer. (or port (env :port) 3000))]
+    (jetty/run-jetty (site #'app) {:port port :join? false})))

src/aretherecookies/handler.clj

@@ -2,7 +2,6 @@
   (:require [aretherecookies.db :refer [query-food-items build-fooditems-query]]
             [compojure.core :refer :all]
             [compojure.route :as route]
-            [ring.middleware.defaults :refer [wrap-defaults site-defaults]]
             [clojure.data.json :as json]
             [clojure.string :as str]
             [ring.middleware.anti-forgery :refer :all]
@@ -52,6 +51,3 @@
   (POST "/test" req "ok")
   (POST "/fooditems" req (wrap-json-body food-items-handler))
   (GET "/echo" [location orderby filter] (str location orderby filter)))
-
-(def app
-  (wrap-defaults app-routes (assoc-in site-defaults [:security :anti-forgery] false)))