Added redirect on no params request

.gitignore

@@ -10,3 +10,4 @@ pom.xml.asc
 /.nrepl-port
 .hgignore
 .hg/
+/src/rss_thread_watch/ffs.clj

README.org

@@ -14,6 +14,8 @@ Get notifications from your feed reader when your favourite /mlp/ thread is abou
 
 ** Getting custom URL
 
+URL without any params (just ~/feed.xml~) won't work. You must specify at least one ~q~. See bellow.
+
 *** Crafting URL by hand
 
 Right now there is no automated way to generate your feed url but making one by hand is fairly simple.
@@ -59,10 +61,10 @@ This is an experimental project. There are several limitations:
 
 ** Feature set
 
-- Planned/finnished features [15%]
+- Planned/finnished features [23%]
   - [X] [DONE] Super basic features done (feed, query, repeat)
   - [X] Have proper sorting - The most likely to die threads first
-  - [ ] No params request should redirect to url generator or (for now) documentation
+  - [X] No params request should redirect to url generator or (for now) documentation
   - [ ] Config file instead of hardcoding config values
   - [ ] Include time of latest data fetch
   - [ ] Make threads have preview images taken from the actuall thread OP

src/rss_thread_watch/core.clj

@@ -62,4 +62,3 @@
 ;; (repl-main)
 ;; Single cache update for repl
 ;; (watcher/update-thread-cache! (:target CONFIG) (:starting-page CONFIG))
-;; (watcher/update-thread-cache! "/home/michal/Zdrojaky/Clojure/rss-thread-watch/resources/catalog-pts9.json" (:starting-page CONFIG))

src/rss_thread_watch/feed_generator.clj

@@ -15,6 +15,7 @@
 (ns rss-thread-watch.feed-generator
   "Generates feeds for requests"
   (:require [ring.middleware.params :as rp]
+            [ring.util.response :as response]
             [clj-rss.core :as rss]
             [clojure.string :as s]
             [rss-thread-watch.watcher :as watcher])
@@ -119,6 +120,11 @@
            (throw (ex-info "404" {:status 404
                                   :header {"Content-Type" "text/plain"}
                                   :body "404 This server has nothing but /feed.xml"})))
+         ;; No url params -> we redirect to documentation about params
+         (when (empty? prms)
+           (throw (ex-info "302"
+                           (response/redirect "https://git.treebrary.org/Treebrary.org/rss-thread-watcher#headline-4"))))
+
          ;; No querry specified - don't know what to search for
          (when-not (prms "q")
            (throw (ex-info "400" {:status 400