#!/bin/bash

completed_dir=kazkur
convert_dir=kazkurkitur
lock_dir=lockfailui

db_user=user
db_pass=pass
db_db=database
db_socket=socket

db_run_query="mysql -u $db_user -p $db_pass -S $db_socket -D $db_db -e"

# Ir taip toliau

[ -f $lock_dir/`basename $0`.lock ] && { echo "`date` - already running" >&2; exit 1; }
touch $lock_dir/`basename $0`.lock || { echo "`date` - can't create a lock" >&2; exit 1; }
#  realiam gyvenime dar gali pasitaikyti situaciju kai vienas run'as nespeja sukonvertuoti visko  per intervala ir pasileidzia konkuruojantis procesas, tai pridejau run lock'inima ir tikrinima pradzioj. Jei negali susikurti lock'o (permissions, missing dir, whatever) irgi turi fail'inti - pasekmes kitaip gali buti liudnesnes. (Tomas) Labai liuks. Idealu butu loga laikyti /home/sites/djscene/logs/ folderyje.

cd $convert_dir
for file in `ls *.mp3`; do # dirbam su kiekvienu rastu failu turinciu tinkama pletini
   echo "`date` - working with $file"
   id=`echo $file | grep -Eo "[0-9]+\.[^\.]+$" | grep -Eo "^[0-9]+"` # kazkokie kreivi pipe su kazkokiais regexp'ais issizvejot id - siuo atveju turetu pasiimti skaiciu esanti pries paskutini taska eilutej - (Tomas) butent taip ir reikia - skaicius pries pasktuini taska.
   $db_run_query "UPDATE dj_media SET media_file_status=process WHERE media_id=$id" || { echo "`date` - done working with $file (failure)"; continue; }
   if ! [[ `$db_run_query "SELECT media_file_status FROM dj_media WHERE media_id=$id"` =~ process$ ]]; then # tikrinam ar pavyko uzsettinti statusa "process" (bash'izmas, beje, panaudotas - kas pataisys i posix compatible: veliava i rankas :)
      echo "Failed to set status ($id)" >&2
      rm -f $file
      echo "`date` - done working with $file (failure)"
      continue
   fi
   nice -n 19 lame -h $convert_dir/$file $completed_dir/$file && \  # encodinam. (Tomas) butent tokius parametrus ir tokia komanda reik vykdyti. priklausomai nuo failo dydzio ji uztruknka nuo 5 iki 10 min
   $db_run_query "UPDATE dj_media SET media_file_status=complete WHERE media_id=$id" && \
   { rm -f $file; echo "`date` - done working with $file (success)"; } || echo "`date` - done working with $file (failure)" # sekmes atveju pavalom faila. (Tomas) OK
done
rm -f $lock_dir/`basename $0`.lock # paleidziam lock'a