#!/bin/bash

DATE="$(/bin/date +"%Y-%m-%d")"
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 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

test -x /usr/sbin/apache2ctl && if /etc/init.d/apache2 status > /dev/null ; then \
    /etc/init.d/apache2 reload > /dev/null; \
fi;

test -x /usr/sbin/nginx && invoke-rc.d nginx rotate >/dev/null 2>&1

# 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

exit 0