yenu/src/clj/yenu/routes/home.clj

(ns yenu.routes.home
  (:require [yenu.layout :as layout]
            [compojure.core :refer [defroutes GET POST]]
            [ring.util.http-response :as response]
            [ring.util.response :refer [redirect]]
            [clojure.java.io :as io]
            [yenu.helpers.images :as images])
  (:import [java.io File FileInputStream FileOutputStream]))

(defn decoded-url-file [filepath]
  (java.net.URLDecoder/decode filepath "utf-8"))

(defn upload-file [{:keys [tempfile size filename]}]
  (let [target-filepath (decoded-url-file (images/data-path "to-process" filename))]
    (try
      (with-open [in (new FileInputStream tempfile)
                  out (new FileOutputStream target-filepath)]
        (let [src (.getChannel in)
              dst (.getChannel out)]
          (.transferFrom dst src 0 (.size src))
          (.flush out))))
    target-filepath))

(defroutes upload-routes
  (GET "/upload" []
       (layout/render "upload.html"))
  (POST "/upload" [file]
        (-> (upload-file file) (images/process-image))
        (redirect "/")))

(defroutes home-routes
  (GET "/" []
       (layout/render "home.html"))
  (GET "/docs" []
       (-> (response/ok (-> "docs/docs.md" io/resource slurp))
           (response/header "Content-Type" "text/plain; charset=utf-8"))))