@@ 2,9 2,32 @@ 
 exec -a "$0" guile -L $(realpath $(dirname $0)) -e '(gms)' -c '' "$@"
 ;; !#
 
+;; Requirements:
+;; - run on a GNU/Linux machine
+;; - Guile
+;; - ffmpeg
+;; - mplayer
+
+;; Usage:
+;; - adjust style in template.html, video.html, audio.html, and style.css.
+;; - put video and audio files into ../media/
+;; - run ./gms.scm to grab a random file from ../media/ and create an index.html site with all the already converted audio ready for streaming.   
+
+;; Plan:
+;; - unprocessed media-files are in ../media/
+;; - processed entries are in ../entries as ~03d.html
+;; - stream files are in $(basename filename).m3u and $(basename filename)-~03d.ogv to keep the structure simple.
+;; - new streams are inserted at the top.
+;; - the currently processed video is in current-video/ so it can be resumed easily if conversion does not finish.
+;; - the content of all html files in ../entries is embedded in reverse lexical order.
+;; - keep the videos as full ogv encoded and add them shuffled to each m3u-list to give continuous random playback     of later entries.
+
 (define-module (gms) #:export (main))
 (import (ice-9 popen)
-        (ice-9 rdelim))
+        (ice-9 rdelim)
+        (ice-9 string-fun)
+        (ice-9 ftw)
+        (ice-9 format))
 
 (define-syntax-rule (read-first-line command)
   (let* ((port (open-input-pipe command))

          
@@ 12,6 35,39 @@ exec -a "$0" guile -L $(realpath $(dirna
     (close-pipe port)
     res))
 
+(define (read-file-as-string filename)
+  (let* ((port (open-input-file filename))
+         (content (if (eof-object? (peek-char port)) "" (read-delimited "" port))))
+    (close port)
+    content))
+
+(define (convert-video filename)
+  (define basename (basename filename))
+  (define start 0)
+  (define len 5)
+  (define stop (+ start len))
+  (define (step)
+    (set! start (+ start len))
+    (set! len (+ len 10))
+    (set! stop (+ start len)))
+  (define (ffmpeg index start stop) 
+    (close-pipe (open-input-pipe 
+                 (format #f "ffmpeg -ss ~d -to ~d -accurate_seek -i ~a -y -g 360 -q:a 3 -q:v 3 -filter:v scale=640:-1 ~a-~3'0d.ogv"
+                         start stop filename index filename))))
+  (map (λ(x) (ffmpeg x start stop)(step)) (iota 27))
+  (close-pipe (open-input-pipe (format #f "mplayer ~a -ss 5 -nosound -vf scale -zoom -xy 600 -vo jpeg:outdir=. -frames 1" filename)))
+  (close-pipe (open-input-pipe (format #f "ls ~a-*ogv > ~a-stream.m3u" filename filename))))
+
 (define (main args)
-  (display (read-first-line "ls"))
+  (define next-video (read-first-line "ls ../media/*.* | shuf | head -n 1"))
+  (define template (read-file-as-string "template.html"))
+  (define entry-filenames (map (λ (x) (string-append "../entries/" x)) (reverse (sort (scandir "../entries/" (λ (x) (string-suffix? ".html" x))) string-ci<=)))) ;; TODO fill entries with video files
+  (define entries (map read-file-as-string entry-filenames))
+  (define replaced (string-replace-substring template "{{{STREAMS}}}" (string-join entries "\n")))
+  (let* ((port (open-output-file "index.html")))
+    (display replaced port)
+    (close port))
+  (display entry-filenames)
+  (display next-video)
+  (display replaced)
   (newline))