#!/bin/bash

# Colors
if [ -z ${BASH_SOURCE} ]; then
	blue=`echo "\e[1m\e[34m"`
	green=`echo "\e[1m\e[32m"`
	greenBold=`echo "\e[1m\e[1;32m"`
	redBold=`echo "\e[1m\e[1;31m"`
	red=`echo "\e[1m\e[31m"`
	purple=`echo "\e[1m\e[35m"`
	bold=`echo "\e[1m"`
  	normal=`echo "\e[0m"`
else
  	blue=`echo -e "\e[1m\e[34m"`
  	green=`echo -e "\e[1m\e[32m"`
  	greenBold=`echo -e "\e[1m\e[1;32m"`
	redBold=`echo -e "\e[1m\e[1;31m"`
	purple=`echo -e "\e[1m\e[35m"`
	bold=`echo -e "\e[1m"`
  	normal=`echo -en "\e[0m"`
fi

HLINE="=================================================================="

BLA_metro=( 0.2 '    ' '=   ' '==  ' '=== ' ' ===' '  ==' '   =' )

BLA::play_loading_animation_loop() {
  while true ; do
    for frame in "${BLA_active_loading_animation[@]}" ; do
      printf "\r%s" "${frame}"
      sleep "${BLA_loading_animation_frame_interval}"
    done
  done
}

BLA::start_loading_animation() {
  BLA_active_loading_animation=( "${@}" )
  BLA_loading_animation_frame_interval="${BLA_active_loading_animation[0]}"
  unset "BLA_active_loading_animation[0]"
  tput civis # Hide the terminal cursor
  BLA::play_loading_animation_loop &
  BLA_loading_animation_pid="${!}"
}

BLA::stop_loading_animation() {
  kill "${BLA_loading_animation_pid}" &> /dev/null
  printf "\n"
  tput cnorm # Restore the terminal cursor
}

#######################################################################################

# App Check
for bin in curl docker git; do
  if [[ -z $(which ${bin}) ]]; then echo "${redBold}Cannot find ${bin}, exiting...${normal}"; exit 1; fi
done

# Docker-Compose Check
if docker compose > /dev/null 2>&1; then
    if docker compose version --short | grep "^2." > /dev/null 2>&1; then
      COMPOSE_VERSION=native
      echo -e "${purple}Found Docker Compose Plugin (native).${normal}"
      echo -e "${purple}Setting the DOCKER_COMPOSE_VERSION Variable to native${normal}"
      sleep 2
      echo -e "${purple}Notice: You´ll have to update this Compose Version via your Package Manager manually!${normal}"
    else
      echo -e "${redBold}Cannot find Docker Compose with a Version Higher than 2.X.X.${normal}"
      exit 1
    fi
elif docker-compose > /dev/null 2>&1; then
  if ! [[ $(alias docker-compose 2> /dev/null) ]] ; then
    if docker-compose version --short | grep "^2." > /dev/null 2>&1; then
      COMPOSE_VERSION=standalone
      echo -e "${purple}Found Docker Compose Standalone.${normal}"
      echo -e "${purple}Setting the DOCKER_COMPOSE_VERSION Variable to standalone${normal}"
      sleep 2
    else
      echo -e "${redBold}Cannot find Docker Compose with a Version Higher than 2.X.X.${normal}"
      exit 1
    fi
  fi

else
  echo -e "${redBold}Cannot find Docker Compose.${normal}"
  exit 1
fi

#######################################################################################

# Path-Settings
installPth="/opt/piler-docker"
configPth="/opt/piler-docker/config"
etcPth="/var/lib/docker/volumes/piler-docker_piler_etc/_data"

# Load config
. ./piler.conf

############################## Installer Settings ######################################

if [ ! -f $installPth/.configDone ]; then
    # Piler-Domain
    read -ep "Please set your Piler-Domain (Enter for default: $PILER_DOMAIN): " pilerDomain
    pilerDomain=${pilerDomain:=$PILER_DOMAIN}
    sed -i 's/PILER_DOMAIN=.*/PILER_DOMAIN="'$pilerDomain'"/g' ./piler.conf

    # Piler-Admin-Mail
    read -ep "Please set your Mailserver Admin Mail (Enter for default: $SUPPORT_MAIL): " pilerAdminMail
    pilerAdminMail=${pilerAdminMail:=$SUPPORT_MAIL}
    sed -i 's/SUPPORT_MAIL=.*/SUPPORT_MAIL="'$pilerAdminMail'"/g' ./piler.conf

    # retention Days
    read -ep "Please set retention days (Enter for default: $DEFAULT_RETENTION_DAYS Days): " retentionDays
    retentionDays=${retentionDays:=$DEFAULT_RETENTION_DAYS Days}
    sed -i 's/DEFAULT_RETENTION_DAYS=.*/DEFAULT_RETENTION_DAYS="'$retentionDays'"/g' ./piler.conf

    # Smarthost
    read -ep "Please set your Smarthost (Enter for default: $SMARTHOST). Default settings can be used here!!: " pilerSmartHost
    pilerSmartHost=${pilerSmartHost:=$SMARTHOST}
    sed -i 's/SMARTHOST=.*/SMARTHOST="'$pilerSmartHost'"/g' ./piler.conf

    # IMAP Server
    read -ep "Please set your IMAP Server (Enter for default: $IMAP_SERVER): " imapServer
    imapServer=${imapServer:=$IMAP_SERVER}
    sed -i 's/IMAP_SERVER=.*/IMAP_SERVER="'$imapServer'"/g' ./piler.conf

    # Timezone
    read -ep "Please set your Timezone (Enter for default: $TIME_ZONE): " timeZone
    timeZone=${timeZone:=$TIME_ZONE}
    timeZone="${timeZone////\\/}"
    sed -i 's/TIME_ZONE=.*/TIME_ZONE="'$timeZone'"/g' ./piler.conf

    # MySql Database
    read -ep "Please set your MySql Database (Enter for default: $MYSQL_DATABASE): " pilerDataBase
    pilerDataBase=${pilerDataBase:=$MYSQL_DATABASE}
    sed -i 's/MYSQL_DATABASE=.*/MYSQL_DATABASE="'$pilerDataBase'"/g' ./piler.conf

    # MySql User
    read -ep "Please set your MySql User (Enter for default: $MYSQL_USER): " pilerUser
    pilerUser=${pilerUser:=$MYSQL_USER}
    sed -i 's/MYSQL_USER=.*/MYSQL_USER="'$pilerUser'"/g' ./piler.conf

    # MySql Password
    read -sp "Please set your MySql Password: " pilerPassword
    pilerPassword=$pilerPassword
    sed -i 's/MYSQL_PASSWORD=.*/MYSQL_PASSWORD="'$pilerPassword'"/g' ./piler.conf
    echo

    # use Let's Encrypt
    while true; do
        read -ep "Enabled / Disabled (yes/no) Let's Encrypt? For local Run disabled / Y|N: " jn
        case $jn in
            [Yy]* ) sed -i 's/USE_LETSENCRYPT=.*/USE_LETSENCRYPT="yes"/g' ./piler.conf; break;;
            [Nn]* ) sed -i 's/USE_LETSENCRYPT=.*/USE_LETSENCRYPT="no"/g' ./piler.conf; break;;
            * ) echo -e "${redBold} Please confirm with Y or N.${normal}";;
        esac
    done

    # reload config
    . ./piler.conf

    # Let's Encrypt registration contact information
    if [ "$USE_LETSENCRYPT" = "yes" ]; then
        read -ep "Please set Let's Encrypt registration contact information (Enter for default: $LETSENCRYPT_EMAIL): " acmeContact
        acmeContact=${acmeContact:=$LETSENCRYPT_EMAIL}
        sed -i 's/LETSENCRYPT_EMAIL=.*/LETSENCRYPT_EMAIL="'$acmeContact'"/g' ./piler.conf
    fi

    # use Mailcow
    while true; do
        read -ep "If Use Mailcow API Options (yes/no)? / Y|N: " jn
        case $jn in
            [Yy]* ) sed -i 's/USE_MAILCOW=.*/USE_MAILCOW=true/g' ./piler.conf; break;;
            [Nn]* ) sed -i 's/USE_MAILCOW=.*/USE_MAILCOW=false/g' ./piler.conf; break;;
            * ) echo -e "${redBold} Please confirm with Y or N.${normal}";;
        esac
    done

    # reload config
    . ./piler.conf

    if [ "$USE_MAILCOW" = true ]; then
        # Mailcow API-Key
        read -ep "Please set your Mailcow API-Key (current: $MAILCOW_APIKEY): " apiKey
        apiKey=${apiKey:=$MAILCOW_APIKEY}
        sed -i 's/MAILCOW_APIKEY=.*/MAILCOW_APIKEY="'$apiKey'"/g' ./piler.conf

        # Mailcow Host Domain
        read -ep "Please set your Mailcow Host Domain (Enter for default: $imapServer): " mailcowHost
        mailcowHost=${mailcowHost:=$imapServer}
        sed -i 's/MAILCOW_HOST=.*/MAILCOW_HOST="'$mailcowHost'"/g' ./piler.conf
    fi

    echo
    echo "${blue}${HLINE}"
    echo "All settings were saved in the piler.conf file"
    echo "and can be adjusted there at any time."
    echo "${blue}${HLINE}${normal}"
    echo

    # config done
    touch $installPth/.configDone

elif [ -f $installPth/.configDone ]; then
    select name in Install-Piler Update-Piler
    do
        if [ $name = "Install-Piler" ]; then
            echo
            echo "${blue}Ready for: $name${normal}" && break
            echo
        elif [ $name = "Update-Piler" ]; then
            echo
            echo "${blue}Ready for: $name${normal}"
            echo
            bash $installPth/update.sh && exit 1
        fi
    done
fi

# uninstall Postfix
while true; do
    read -ep "Postfix must be uninstalled prior to installation. Do you want to uninstall Postfix now? (y/n): " yn
    case $yn in
        [Yy]* ) apt purge postfix -y; break;;
        [Nn]* ) echo -e "${redBold}    The installation process is aborted because Postfix has not been uninstalled.!! ${normal}"; exit;;
        * ) echo -e "${redBold} Please confirm with y or n.${normal}";;
    esac
done

# start piler install
while true; do
    read -ep "Do you want to start the Piler installation now? / Y|N: " yn
    case $yn in
        [Yy]* ) echo -e "${greenBold}Piler install started!! ${normal}"; break;;
        [Nn]* ) echo -e "${redBold}Aborting the Piler installation!! ${normal}"; exit;;
        * ) echo -e "${redBold} Please confirm with Y or N.${normal}";;
    esac
done

#########################################################################################

# reload config
. ./piler.conf

if [ ! -f $installPth/.env ]; then
    ln -s ./piler.conf .env
fi

if [ -f $installPth/docker-compose.yml ]; then
    rm $installPth/docker-compose.yml
fi

if [ "$USE_LETSENCRYPT" = "yes" ]; then
    cp $configPth/piler-ssl.yml $installPth/docker-compose.yml
else
    cp $configPth/piler-default.yml $installPth/docker-compose.yml
fi

# old docker stop
cd $installPth

if [ $COMPOSE_VERSION = native ]; then
    docker compose down
else
    docker-compose down
fi

# docker start
echo
echo "${greenBold}${HLINE}"
echo "${greenBold}                 start docker-compose for Piler"
echo "${greenBold}${HLINE}${normal}"
echo

cd $installPth

if [ "$USE_LETSENCRYPT" = "yes" ]; then
    if ! docker network ls | grep -o "nginx-proxy"; then
        docker network create nginx-proxy

        echo
        echo "${blue}${HLINE}"
        echo "${blue}                       docker network created"
        echo "${blue}${HLINE}${normal}"
        echo
    fi
fi

if [ $COMPOSE_VERSION = native ]; then
    docker compose up -d
else
    docker-compose up -d
fi


echo "${blue}********* Piler started... Please wait... *********"

BLA::start_loading_animation "${BLA_metro[@]}"
sleep 20
BLA::stop_loading_animation

echo
echo "${blue}${HLINE}"
echo "${blue}             backup the File config-site.php"
echo "${blue}${HLINE}${normal}"
echo

if [ ! -f $etcPth/config-site.php.bak ]; then
    cp $etcPth/config-site.php $etcPth/config-site.php.bak
else
    rm $etcPth/config-site.php
    cp $etcPth/config-site.php.bak $etcPth/config-site.php
fi

echo
echo "${blue}${HLINE}"
echo "${blue}                       set User settings ..."
echo "${blue}${HLINE}${normal}"
echo

cat >> $etcPth/config-site.php <<EOF

// Smarthost
\$config['SMARTHOST'] = '$SMARTHOST';
\$config['SMARTHOST_PORT'] = '25';

// CUSTOM
\$config['PROVIDED_BY'] = '$PILER_DOMAIN';
\$config['SUPPORT_LINK'] = 'mailto:$SUPPORT_MAIL';
\$config['COMPATIBILITY'] = '';

// fancy features.
\$config['ENABLE_INSTANT_SEARCH'] = 1;
\$config['ENABLE_TABLE_RESIZE'] = 1;

\$config['ENABLE_DELETE'] = 1;
\$config['ENABLE_ON_THE_FLY_VERIFICATION'] = 1;

// general settings.
\$config['TIMEZONE'] = '$TIME_ZONE';

// authentication
// Enable authentication against an imap server
\$config['ENABLE_IMAP_AUTH'] = 1;
\$config['RESTORE_OVER_IMAP'] = 1;
\$config['IMAP_RESTORE_FOLDER_INBOX'] = 'INBOX';
\$config['IMAP_RESTORE_FOLDER_SENT'] = 'Sent';
\$config['IMAP_HOST'] = '$IMAP_SERVER';
\$config['IMAP_PORT'] =  993;
\$config['IMAP_SSL'] = true;

// authentication against an ldap directory (disabled by default)
//\$config['ENABLE_LDAP_AUTH'] = 1;
//\$config['LDAP_HOST'] = '$SMARTHOST';
//\$config['LDAP_PORT'] = 389;
//\$config['LDAP_HELPER_DN'] = 'cn=administrator,cn=users,dc=mydomain,dc=local';
//\$config['LDAP_HELPER_PASSWORD'] = 'myxxxxpasswd';
//\$config['LDAP_MAIL_ATTR'] = 'mail';
//\$config['LDAP_AUDITOR_MEMBER_DN'] = '';
//\$config['LDAP_ADMIN_MEMBER_DN'] = '';
//\$config['LDAP_BASE_DN'] = 'ou=Benutzer,dc=krs,dc=local';

// authentication against an Uninvention based ldap directory 
//\$config['ENABLE_LDAP_AUTH'] = 1;
//\$config['LDAP_HOST'] = '$SMARTHOST';
//\$config['LDAP_PORT'] = 7389;
//\$config['LDAP_HELPER_DN'] = 'uid=ldap-search-user,cn=users,dc=mydomain,dc=local';
//\$config['LDAP_HELPER_PASSWORD'] = 'myxxxxpasswd';
//\$config['LDAP_AUDITOR_MEMBER_DN'] = '';
//\$config['LDAP_ADMIN_MEMBER_DN'] = '';
//\$config['LDAP_BASE_DN'] = 'cn=users,dc=mydomain,dc=local';
//\$config['LDAP_MAIL_ATTR'] = 'mailPrimaryAddress';
//\$config['LDAP_ACCOUNT_OBJECTCLASS'] = 'person';
//\$config['LDAP_DISTRIBUTIONLIST_OBJECTCLASS'] = 'person';
//\$config['LDAP_DISTRIBUTIONLIST_ATTR'] = 'mailAlternativeAddress';

// special settings.
//\$config['MEMCACHED_ENABLED'] = 1;
\$config['SPHINX_STRICT_SCHEMA'] = 1; // required for Sphinx see https://bitbucket.org/jsuto/piler/issues/1085/sphinx-331.
EOF

if [ "$USE_MAILCOW" = true ]; then

echo
echo "${blue}${HLINE}"
echo "set Mailcow Api-Key config"
echo "${blue}${HLINE}${normal}"
echo

cat >> $etcPth/config-site.php <<EOF

// Mailcow API
\$config['MAILCOW_API_KEY'] = '$MAILCOW_APIKEY';
\$config['MAILCOW_SET_REALNAME'] = true;
\$config['CUSTOM_EMAIL_QUERY_FUNCTION'] = 'query_mailcow_for_email_access';
\$config['MAILCOW_HOST'] = '$MAILCOW_HOST'; // default $config['IMAP_HOST']
include('auth-mailcow.php');
EOF

curl -o $etcPth/auth-mailcow.php https://raw.githubusercontent.com/patschi/mailpiler-mailcow-integration/master/auth-mailcow.php
fi

# add config settings

if [ ! -f $etcPth/piler.conf.bak ]; then
    cp $etcPth/piler.conf $etcPth/piler.conf.bak
else
    rm $etcPth/piler.conf
    cp $etcPth/piler.conf.bak $etcPth/piler.conf
fi

sed -i "s/default_retention_days=.*/default_retention_days=$DEFAULT_RETENTION_DAYS/" $etcPth/piler.conf
sed -i "s/update_counters_to_memcached=.*/update_counters_to_memcached=1/" $etcPth/piler.conf

cat >> $etcPth/piler.conf <<EOF
queuedir=/var/piler/store
EOF

# piler restart
echo
echo "${blue}${HLINE}"
echo "${blue}                  restart piler ..."
echo "${blue}${HLINE}${normal}"
echo

cd $installPth

if [ $COMPOSE_VERSION = native ]; then
    docker compose restart piler
else
    docker-compose restart piler
fi


echo
echo "${greenBold}${HLINE}"
echo "${greenBold}             Piler install completed successfully"
echo "${greenBold}${HLINE}${normal}"
echo
echo
echo "${greenBold}${HLINE}"
if [ "$USE_LETSENCRYPT" = "yes" ]; then
    echo "${greenBold}you can start in your Browser with https://${PILER_DOMAIN}!"
else
    echo "${greenBold}you can start in your Browser with:"
    echo "${greenBold}http://${PILER_DOMAIN} or http://local-ip"
fi
echo "${greenBold}${HLINE}${normal}"
echo