#!/bin/bash
# get info disabled modules
# options:
# action=status
export LANG="en_US.UTF-8"
LOG=/tmp/php_modules.list

# print error message
print_error() {
  msg=$1
  echo "{\"changed\":false,\"failed\":true,\"msg\":\"$msg\"}"
  exit 1
}

# print timezone info
print_ok() {
  msg=$1

  echo "{\"changed\":true,\"msg\":\"$msg\",\"php_list\":\"$LOG\"}"
  exit 0
}

# get ansible options
source ${1}

# default values
php_include_dir=/etc/php.d
[[ -z "$action" ]] && action=safe
[[ ! -d $php_include_dir ]] && print_ok "Not found $php_include_dir"

## 5.4 upgrade
# save modules wich disabled, but don't have empty one file (update created it)
if [[ "$action" == "safe" ]]; then
  echo -n > $LOG
  for f_disabled in `find $php_include_dir/ -name "*.disabled" -type f`; do
    f_ini=$(echo "$f_disabled" | sed -e 's:\.disabled$::')
    echo "$f_ini"
    [[ ! -f $f_ini ]] && echo $f_ini >> $LOG
  done
  print_ok "Save list files"
fi

# disable modules and create empty files 
if [[ ( "$action" == "restore" ) && ( -e $LOG ) ]]; then
  while read file; do
    mv -f $file ${file}.disabled
    echo -n > $file
  done < $LOG
  print_ok "Restore files"
fi

## 5.6 upgrade
## file name changed from  /etc/php.d/opcache.ini to  /etc/php.d/10-opcache.ini
if [[ "$action" == "safe56" ]]; then
    echo -n > $LOG
    for ini_file in `find $php_include_dir/ -name "*.ini" -type f`; do
        ini_base=$(basename $ini_file)
        ini_status="enabled"
        if [[ -f $ini_file.disabled ]]; then
            ini_status="disabled"
        fi
        echo "$ini_base:$ini_status" >> $LOG
    done
    print_ok "Save list files"
fi

## restore/disabled modules with was disabled before update
if [[ "$action" == "restore56" ]]; then
    while read line; do
        ini_base=$(echo "$line" | awk -F':' '{print $1}')
        ini_status=$(echo "$line" | awk -F':' '{print $2}')
        # find new file
        new_name=$(find $php_include_dir/ -iname "[0-9][0-9]-$ini_base")
        if [[ ( -n "$new_name" ) && ( -f "$new_name" ) ]]; then
            if [[ "$ini_status" == "disabled" ]]; then
                mv $new_name $new_name.disabled
                touch $new_name
                rm -f $php_include_dir/$ini_base.rpmsave \
                    $php_include_dir/$ini_base.disabled 
            else
                mv -f $php_include_dir/$ini_base.rpmsave $new_name
            fi
        fi
    done < $LOG
    print_ok "Restore files"
fi

## 7.0 rollback to 56
## file name is /etc/php.d/10-opcache.ini
if [[ "$action" == "safe70" ]]; then
    echo -n > $LOG
    for ini_file in `find $php_include_dir/ -name "*.ini" -type f`; do
        ini_base=$(basename $ini_file | sed -e 's/^[0-9]\+-//;')
        ini_status="enabled"
        if [[ -f $ini_file.disabled ]]; then
            ini_status="disabled"
        fi
        echo "$ini_base:$ini_status" >> $LOG
    done
    print_ok "Save list files"
fi