#!/bin/bash

DATE=`/bin/date +"%d-%m-%Y"`
HOMEPREFIX="/home"

rotate () {
  mv $1 $1.$DATE
  touch $1
  chown $2 $1
  chmod g+r $1
}

user_for() {
  homedir=`echo $1 | sed "s#\($HOMEPREFIX/\([^/]\+\)\).*#\1#"`
  stat -L -c '%G' $homedir
}

for log in access.log access-*.log error.log; do
  for i in `ls -1 -d $HOMEPREFIX/*/log/$log 2>/dev/null | grep -v \.bak\.`; do
    USER=`user_for $i`
    rotate $i root:$USER
  done
done

for i in `ls -1 -d $HOMEPREFIX/*/log/php.log 2>/dev/null | grep -v \.bak\.`; do
  USER=`user_for $i`
  rotate $i www-$USER:$USER
done

for log in production.log delayed_job.log development.log test.log; do
  for i in `ls -1 -d $HOMEPREFIX/*/www/{,current/}log/$log 2>/dev/null | grep -v \.bak\.`; do
    USER=`user_for $i`
    rotate $i $USER:$USER
  done
done

apache2ctl restart > /dev/null

# Zipping is done after web server reload, so that the file descriptor is released.
# Else, an error is raised (gzip file size changed while zipping)
# and logs written during the zipping process might be lost.

for log in access.log*[!\.gz] access-*.log*[!\.gz] error.log*[!\.gz]; do
  for i in `ls -1 -d $HOMEPREFIX/*/log/$log 2>/dev/null | grep -v \.bak\.`; do
    if test -f "$i"; then
      gzip "$i"
    fi
  done
done

for log in production.log*[!\.gz] delayed_job.log*[!\.gz] development.log*[!\.gz] test.log*[!\.gz]; do
  for i in `ls -1 -d $HOMEPREFIX/*/www/{,current/}log/$log 2>/dev/null | grep -v \.bak\.`; do
    if test -f "$i"; then
      gzip "$i"
    fi
  done
done