#!/usr/bin/env bash

CUR_IFS=$IFS

script_name="$(basename $(realpath $0))"
script_dir="$(dirname $(realpath $0))"

conf_dir="${script_dir}/conf"
snippet_dir="${script_dir}/snippets"

declare -a unsorted_website_arr
declare -a website_arr

log_file="$(mktemp)"

backup_date=$(date +%Y-%m-%d-%H%M)


# =============
# --- Some functions
# =============

usage() {

   [[ -n  "$1" ]] && error "$1"

   [[ $terminal ]] && echo -e "
\033[1mUsage:\033[m

   $(basename $0) -s <website>

\033[1mDescription\033[m

   Running a set off 'occ' commands for maintenance nextcloud installation

      occ maintenance:repair
      occ files:cleanup
      occ files:scan --all
      occ files:scan-app-data
      occ trashbin:cleanup --all-users

   for all existing users

\033[1mOptions\033[m

   -s <website>
      The site of the nextcloud instance.

\033[1mExample:\033[m

   Runs this set of scripts on system 'cloud-01.oopen.de'

      $(basename $0) -s cloud-01.oopen.de
"

   clean_up 1

}


clean_up() {

   # Perform program exit housekeeping
   rm -f $log_file
   blank_line
   exit $1
}

is_number() {

   return $(test ! -z "${1##*[!0-9]*}" > /dev/null 2>&1);

   # - also possible
   # -
   #[[ ! -z "${1##*[!0-9]*}" ]] && return 0 || return 1
   #return $([[ ! -z "${1##*[!0-9]*}" ]])
}

echononl(){
   if $terminal ; then
      echo X\\c > /tmp/shprompt$$
      if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
         echo -e -n "$*\\c" 1>&2
      else
         echo -e -n "$*" 1>&2
      fi
      rm /tmp/shprompt$$
   fi
}
echo_done() {
   if $terminal ; then
      echo -e "\033[75G[ \033[32mdone\033[m ]"
   fi
}
echo_ok() {
   if $terminal ; then
      echo -e "\033[75G[ \033[32mok\033[m ]"
   fi
}
echo_warning() {
   if $terminal ; then
      echo -e "\033[75G[ \033[33m\033[1mwarn\033[m ]"
   fi
}
echo_failed(){
   if $terminal ; then
      echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
   fi
}
echo_skipped() {
   if $terminal ; then
      echo -e "\033[75G[ \033[37mskipped\033[m ]"
   fi
}

fatal (){
   echo ""
   echo ""
   if $terminal ; then
      echo -e "   [ \033[31m\033[1mFatal\033[m ]: \033[37m\033[1m$*\033[m"
      echo ""
      echo -e "              \033[31m\033[1mScript will be interrupted..\033[m!"
   else
      echo "   [ Fatal ]: $*"
      echo ""
      echo "              Script was terminated...."
   fi
   clean_up 1
}

error(){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[31m\033[1mError\033[m ]: $*"
   else
      echo "   [ Error ]: $*"
   fi
   echo ""
}

warn (){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[33m\033[1mWarning\033[m ]: $*"
   else
      echo "   [ Warning ]: $*"
   fi
   echo ""
}

info (){
   if $terminal ; then
      echo ""
      echo -e "   [ \033[32m\033[1mInfo\033[m ]: $*"
      echo ""
   fi
}

# - Remove leading/trailling whitespaces
# -
trim() {
    local var="$*"
    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
    echo -n "$var"
}

## - Check if a given array (parameter 2) contains a given string (parameter 1)
## -
containsElement () {
   local e
   for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
   return 1
}

blank_line() {
   if $terminal ; then
      echo ""
   fi
}



# ----------
# - Jobhandling 
# ----------

# - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM
# -
trap clean_up SIGHUP SIGINT SIGTERM



# -------------
# - Read in Commandline arguments
# -------------
while getopts hs: opt ; do
   case $opt in
      h) usage ;;
      s) WEBSITE=$OPTARG ;;
      \?) usage
   esac
done

if [[ -z "$WEBSITE" ]] ; then

   while IFS='' read -r -d '' _conf_file ; do
      source $_conf_file
      if [[ -n "$WEBSITE" ]] ; then
         unsorted_website_arr+=("${WEBSITE}:$_conf_file")
      fi
      WEBSITE=""
   done  < <(find "${conf_dir}" -maxdepth 1 -type f -name "*.conf" -print0)

   # - Sort array
   # -
   IFS=$'\n' website_arr=($(sort <<<"${unsorted_website_arr[*]}"))

   # Which cloud instance (website) would you like to update
   #
   source ${snippet_dir}/get-cloud-instance-to-update.sh

   #fatal "No website ios given on commandline - Missing Parameter '-s <website>'"
fi


# - Reset IFS
# -
IFS=$CUR_IFS

DEFAULT_SRC_BASE_DIR="/usr/local/src/nextcloud"
DEFAULT_HTTP_USER="www-data"
DEFAULT_HTTP_GROUP="www-data"
DEFAULT_PHP_ENGINE='FPM'

echo ""
echononl "   Include Configuration file.."
if [[ ! -f $conf_file ]]; then
   echo_failed
   fatal "Missing configuration file '$conf_file'."
else
   source $conf_file
   echo_ok
fi
echo ""

DEFAULT_WEB_BASE_DIR="/var/www/${WEBSITE}"
[[ -n "$WEB_BASE_DIR" ]] || WEB_BASE_DIR=$DEFAULT_WEB_BASE_DIR

if [[ ! -d ${WEB_BASE_DIR} ]] ; then
   fatal "Web base directory '$WEB_BASE_DIR' not found!"
fi

DATA_DIR="$(realpath ${WEB_BASE_DIR}/data)"

[[ -n "$PHP_ENGINE" ]] || PHP_ENGINE=$DEFAULT_PHP_ENGINE

INSTALL_DIR="$(realpath ${WEB_BASE_DIR}/nextcloud)"
CURRENT_VERSION="$(basename $INSTALL_DIR | cut -d"-" -f2)"


# =============
# --- Some 
# =============

# - Support systemd ?
# -
if [[ "X$(which systemd)" = "X" ]]; then
   SYSTEMD_EXISTS=false
else
   SYSTEMD_EXISTS=true
fi

# - Running in a terminal?
# -
if [[ -t 1 ]] ; then
   terminal=true
else
   terminal=false
fi

#clear

if $terminal ; then
   echo ""
   echo ""
   echo ""
   echo -e "\033[32m-----\033[m"
   echo -e "Trigger a set of occ comands on system \033[1m${WEB_BASE_DIR}\033[m"
   echo -e "\033[1m
   occ maintenance:repair
   occ files:cleanup
   occ files:scan --all
   occ files:scan-app-data
   occ trashbin:cleanup --all-users\033[m"
   echo -e "\033[32m-----\033[m"
fi


# =============
# --- Some checks
# =============

DEFAULT_HTTP_USER="www-data"
DEFAULT_HTTP_GROUP="www-data"


NGINX_IS_ENABLED=false
APACHE2_IS_ENABLED=false

# Get Webservice environment as IS_HTTPD_RUNNING, HTTP_USER, HTTP_GROUP..
#
source ${snippet_dir}/get-webservice-environment.sh


# Check PHP Version
#
source ${snippet_dir}/get-php-major-version.sh


# Get full qualified PHP command
#
source ${snippet_dir}/get-path-of-php-command.sh


if [[ ! -x "$PHP_BIN" ]]; then
   fatal "No PHP binary found!"
fi



if $terminal ; then
   echo ""
   echo -e "\033[1;32mStarting Script for \033[1;37m${WEBSITE}\033[m"
   echo ""
   echo -e   "   Cloud instance to be changed.........: $WEBSITE"
   echo ""
   echo -e   "   Current version of nextcloud.........: $CURRENT_VERSION"
   echo ""
   echo -e   "   Web base directory...................: $WEB_BASE_DIR"
   echo -e   "   Install directory....................: $INSTALL_DIR"
   echo -e   "   Data directory.......................: $DATA_DIR"
   echo ""
   echo -e   "   Webserver user.......................: $HTTP_USER"
   echo -e   "   Webserver group......................: $HTTP_GROUP"
   echo ""
   echo -e   "   PHP command..........................: $PHP_BIN"
   echo ""

   echo ""
   echo -n "   Type upper case 'YES' to continue executing with this parameters: "
   read OK
   if [[ "$OK" = "YES" ]] ; then
      echo ""
      echo ""
      echo -e "\033[1;32mGoing to run \033[1;37mfiles:scan\033[1;32m for each user on \033[1;37m$WEBSITE \033[m"
   else
      fatal "Abort by user request - Answer as not 'YES'"
   fi
fi


# -----
# - Main part of the script
# -----

if $terminal ; then
   echo ""
   echo ""
   echo -e "\033[37m\033[1mManual Upgrade Nextcloud..\033[m"
   echo ""
fi

echononl "   Running 'occ upgrade'.."
su -c" $PHP_BIN ${INSTALL_DIR}/occ upgrade" -s /bin/bash $HTTP_USER  > $log_file 2>&1
if [[ $? -eq 0 ]]; then
   echo_ok
else
   echo_failed
   error "$(cat "$log_file")"
fi



blank_line

clean_up 0