(ns bitgloo-web.core
  (:gen-class)
  (:require [bitgloo-web.content :as content])
  (:require [clojure.string :as str])
  (:require [ring.adapter.jetty :refer [run-jetty]])
  (:require [ring.middleware.resource :refer [wrap-resource]])
  (:require [ring.middleware.content-type :refer [wrap-content-type]])
  (:require [ring.middleware.not-modified :refer [wrap-not-modified]])
  (:require [ring.util.response :as resp]))

(def image-extensions [".jpg" ".bmp"])

(defn image? [path] (some (partial str/ends-with? path) image-extensions))

(defn home-redirect [uri] (if (= "/" uri) "/home" uri))

(defn request-handler [content-path request]
  (when (= :get (:request-method request))
    (-> (:uri request)
        (home-redirect)
        ((partial str content-path))
        (content/load-page)
        (resp/response)
        (resp/content-type "text/html")
        (resp/charset "utf8"))))

(defn wrap-content-images [handler content-path]
  (fn [request]
    (let [uri (:uri request)]
      (if (and (= :get (:request-method request)) (image? uri))
        (resp/file-response (str content-path uri))
        (handler request)))))

(defn wrap-log-request [handler]
  (fn [request]
    (-> request
        (select-keys [:headers :protocol :request-method :uri])
        (update :headers get "x-forwarded-for")
        (vals)
        (conj "request:")
        ((partial apply println)))
    (handler request)))

(defn -main [& args]
  (if (= 2 (count args))
    (let [port (-> args first Integer/parseInt)
          content-path (second args)]
      (-> (partial request-handler content-path)
          (wrap-content-images content-path)
          (wrap-resource "public")
          (wrap-content-type)
          (wrap-not-modified)
          (wrap-log-request)
          (run-jetty {:port port})))
    (println "usage: bitgloo port content-path")))