#!/bin/bash

toolName=roundcube
toolPhpDeps="php\${phpVersion}-gd php-imagick"
#https://github.com/roundcube/roundcubemail/releases/latest
latestUrl="https://api.github.com/repos/roundcube/roundcubemail/releases/latest"
latestVersion=
tempExtract=
tempInstall=
phpVersion=

# Get script working directory
# (when called from a different directory)
WDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >>/dev/null 2>&1 && pwd )"
CONFIG=0
CONFIG_FILE_NAME="${toolName}.cfg"
CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"

seq_config() {
  ## use sequencer api:
  initSeqConfig -t "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
  if [ $CONFIG -eq 0 ] ; then
    CONFIG=1
  fi
}

step_1_info() { echo "Install $toolName"; }
step_1_alias() { echo "install"; }
step_1() {
  local aptOpt=
  if quiet;then
    aptOpt="-y"
  fi

  downloadLatest
  fetchPhpVersion

  if [ ! -z $phpVersion ] ; then
    exe apt update
    exe apt install `eval echo "$toolPhpDeps"` $aptOpt
  fi

  exe chown -R www-data: "$tempExtract"
  exe cp -nar "$tempExtract" "$RC_LOC"
}

step_2_info() { echo "Install composer"; }
step_2() {
  exe cd "$RC_LOC"
  local EXPECTED_CHECKSUM="$(wget -q -O - https://composer.github.io/installer.sig)"
  exe php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
  local ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"

  if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]
  then
    error -e ' [E] Invalid installer checksum'
    exe rm composer-setup.php
    return 1
  fi

  exe php composer-setup.php --quiet
  saveReturn $?
  exe rm composer-setup.php
  endReturn "Composer setup failed"
}

step_3_info() { echo "Configure $toolName"; }
step_3_alias() { echo "config"; }
step_3() {
  echo " [I] Recommended composer packages to be added to \"require\" section:"
  echo '      "melanie2/mobile": "*",'
  echo '      "roundcube/carddav": "*",'
  echo '      "alexandregz/twofactor_gauthenticator": "dev-master"'
  exe read -p "Copy the lines above and press Enter to continue."
  exe vi "$RC_LOC/composer.json"
  step postupgrade

  echo " [I] Generating mysql database $RC_DATABASE"
  echo
  exe $WDIR/mysql.sh createdb -c utf8mb4

  echo
  echo " [I] Now visit: http://url-to-roundcube/installer/"
  echo
  echo "     ! Check the database password in $RC_LOC/config/config.inc.php"
  echo "       afterwards, the installer may have corrupted some special character"
  echo
  echo "     ! After installation please delete $RC_LOC/installer"
}

step_10_info() { echo "Configuration notes"; }
step_10_alias() { echo "notes"; }
step_10() {
  color green
  cat <<NOTES_END
# smtp port if missing after installation
   [$RC_LOC/config/config.inc.php]
   // SMTP port (default is 25; use 587 for STARTTLS or 465 for the
   // deprecated SSL over SMTP (aka SMTPS))
   \$config['smtp_port'] = 465;

# Enable two factor auth (installed with step config) for all user
  [$RC_LOC/plugins/twofactor_gauthenticator/config.inc.php]
   $rcmail_config['users_allowed_2FA'] = array('.*');

# Add mobile skin to roundcube and run step 'postupgrade'.
  Don't forget to activate plugins if asked for.

  [$RC_LOC/composer.json]
  "require": {
    ...
    "mobiledetect/mobiledetectlib": "^2.8",
    "roundcube/elastic4mobile": "dev-master"
  }

# Install pspell and aspell spell check engine
  apt install php7.x-pspell aspell-en aspell-de

  [$RC_LOC/config/config.inc.php]
  \$config['spellcheck_engine'] = 'pspell';
  \$config['spellcheck_languages'] = array(
     'en' => 'English',
     'de' => 'Deutsch',
   );
NOTES_END
}

step_12_info() { echo "Troubleshooting"; }
step_12_alias() { echo "trouble"; }
step_12() {
  color green
  cat <<TROUBLE_END
# On composer update errors.

* Backup '/var/www/webmail/plugin' config. Especially twofactor_gauthenticator
* Delete '/var/www/webmail/vendor' folder. Or at least 'vendor/autoload.php' and 'vendor/composer'
* 'sqn_roundcube -q postupgrade'

I also installed 'php-pear' since one error indicated connection to it.
TROUBLE_END
}

step_20_info() { 
  echo -n "Create a backup"
  if [ $CONFIG -ne 0 ] ; then
    echo " at $RC_BACKUP"
  else
    echo
  fi
}
step_20_alias() { echo "backup"; }
step_20() {
  if [ $CONFIG -eq 0 ] ; then
    error -e "No configuration file found"
    return 1
  fi
  if [ ! -z $RC_BACKUP ] ; then
    exe mkdir -p "$RC_BACKUP"
  fi
  exe $WDIR/mysql.sh -qq backup "$RC_DATABASE" "$RC_BACKUP"
  local wwwBackup="$RC_BACKUP/${toolName}_www_`date +%Y%m%d-%H%M%S`.tar.gz"
  echo " [I] Backing up webserver directory to $wwwBackup"
  exe cd "$RC_LOC/.."
  exe tar czf "$wwwBackup" $(basename "$RC_LOC")
}

step_22_info() {
  echoinfoArgs "[CUSTOM VERSION]"
  echo "Upgrade installation to \"latest\" from github if [CUSTOM_VERSION] is empty"
}
step_22_alias() { echo "upgrade"; }
step_22() {
  shift # don't need step number
  local currentVersion=

  if [ -n "${1:-}" ] ; then
    latestVersion="$1"
  else
    fetchLatestVersion
  fi

  if [ -z $latestVersion ] ; then
    error -e "Cannot determine latest version from github repository"
    return 1
  elif interactive ; then
    echo
    currentVersion="$(grep -Po ' \| Version \K.*?(?= )' $RC_LOC/index.php)"
    exe read -p "Install $latestVersion over $currentVersion to $RC_LOC [n]o/(y)es? " answer
    case $answer in
      [yY])
        ;;
      *)
        info -e "Upgrade aborted"
        return 1
        ;;
    esac
  fi

  local isInstalled=$(grep -E "RELEASE $latestVersion" "${RC_LOC}/CHANGELOG" >>/dev/null && echo "1" || echo "0")
  if [ $isInstalled -eq 1 ] ; then
    error -e "Version $latestVersion is already installed"
    return 2
  fi

  downloadLatest

  step backup
  echo " [I] Installing version $latestVersion to $RC_LOC"
  exe "$tempInstall" "$RC_LOC"
  echo " [I] Make sure to check composer.json-dist file for upstream changes"
}

step_23_info() { echo "Post upgrade procedure"; }
step_23_alias() { echo "postupgrade"; }
step_23() {
  exe cd "$RC_LOC"
  echo " [I] Starting post update procedure"
  exe php composer.phar update --no-dev
}

fetchPhpVersion() {
  if [ ! -z $phpVersion ] ; then
    return 0
  fi

  phpVersion="$(php -r 'echo PHP_MAJOR_VERSION.".".PHP_MINOR_VERSION;')"
}

fetchLatestVersion() {
  if [ ! -z $latestVersion ] ; then
    return 0
  fi
  latestVersion=$(curl --silent "$latestUrl" | grep -Po '"tag_name": "\K.*?(?=")')
}

downloadLatest() {
  fetchLatestVersion

  local downUrl="https://github.com/roundcube/roundcubemail/releases/download/${latestVersion}/roundcubemail-${latestVersion}-complete.tar.gz"
  tempExtract="$tempDown/roundcubemail-$latestVersion"
  tempInstall="$tempExtract/bin/installto.sh"

  if [ ! -e "$tempExtract" ] ; then
    exe mkdir -p "$tempDown"
    exe wget -O "$tempLoc" $downUrl
    endReturn -o $? "Download failed: $downUrl"
    exe cd "$tempDown"
    exe tar -xf "$tempLoc"
    endReturn -o $? "Extract failed: $tempLoc"
  else
    echo " [I] Found existing download: $tempExtract"
  fi
}
tempDown="/tmp/roundcube"
tempLoc="$tempDown/rc.tar.gz"

readonly sqr_minVersion=16
. /usr/local/bin/sequencer.sh