#!/bin/bash
# info: Install SnappyMail webmail client
# options: [MODE]
#
# This function installs the SnappyMail webmail client.

#----------------------------------------------------------#
#                Variables & Functions                     #
#----------------------------------------------------------#

# Includes
# shellcheck source=/etc/hestiacp/hestia.conf
source /etc/hestiacp/hestia.conf
# shellcheck source=/usr/local/hestia/func/main.sh
source $HESTIA/func/main.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"
# upgrade config file
source "$HESTIA/install/upgrade/upgrade.conf"

MODE=$1
UPDATE="no"
# Version and Download paths
# Version to be moved to upgrade script
SM_FILE="snappymail-latest.tar.gz"
# For removal of folder
SM_EXTRACT_MAIN="snappymail"

# Downloading full version
SM_URL="https://snappymail.eu/repository/latest.tar.gz"

# Folder paths
SM_INSTALL_DIR="/var/lib/snappymail"
SM_CONFIG_DIR="/etc/snappymail"
SM_LOG="/var/log/snappymail"

#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

# Checking root permissions
if [ "x$(id -u)" != 'x0' ]; then
    echo "ERROR: v-add-sys-snappymail can only be executed by the root user"
    exit 10
fi

# Ensure that $HESTIA (/usr/local/hestia/) and other variables are valid.
if [ -z "$HESTIA" ]; then
    HESTIA="/usr/local/hestia"
fi

if [ -z "$HOMEDIR" ] || [ -z "$HESTIA_INSTALL_DIR" ]; then
    echo "ERROR: Environment variables not present, installation aborted."
    exit 2
fi

# Get current version
if [ -f "/var/lib/snappymail/data/VERSION" ]; then
    version=$(cat $SM_INSTALL_DIR/data/VERSION);
    if [ "$version" == "$rl_v" ]; then
        echo "Error: Installed version ($version) is equal to the available version ($rl_v)"
        exit 2;
    else
        UPDATE="yes"
    fi
fi

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

if [ "$UPDATE" == "no" ]; then
    rm -f -r $SM_INSTALL_DIR
    rm -f -r $SM_CONFIG_DIR

    mkdir $SM_INSTALL_DIR
    mkdir $SM_CONFIG_DIR

    cd "$SM_INSTALL_DIR"
    [ ! -f "${RC_INSTALL_DIR}/${RC_FILE}" ] && wget "$SM_URL" --retry-connrefused --quiet -O "${SM_INSTALL_DIR}/${SM_FILE}"

    key=$(openssl rand -hex 4);

    admin_account="admin_$key"
    admin_password=$(generate_password)
    r=$(generate_password)

    echo "Username: admin_$key" > ~/.snappymail
    echo "Password: $admin_password" >> ~/.snappymail
    echo "Secret key: admin_$key" >> ~/.snappymail

    tar -xzf ${SM_INSTALL_DIR}/${SM_FILE}

    mv ./data $SM_CONFIG_DIR/
    ln -s $SM_CONFIG_DIR/data/ ./data

    SALT=$(openssl rand -base64 64)
    cp ./data/VERSION ./data/INSTALLED
    echo "<?php //$SALT" >  ./data/SALT.php
    echo "Forbidden" >  ./data/index.php
    echo "Forbidden" >  ./data/index.html

    # Create database
    mysql -e "CREATE DATABASE snappymail"
    # Mysql available on system
    r=$(generate_password)
    mysql -e "GRANT ALL ON snappymail.*
     TO snappymail@localhost IDENTIFIED BY '$r'"

    mkdir -p $SM_CONFIG_DIR/data/_data_/_default_/configs
    php -f $HESTIA_INSTALL_DIR/snappymail/change_password.php "admin_$key" "$admin_password" "$r"
    mkdir -p $SM_CONFIG_DIR/data/_data_/_default_/domains
    cp -f $HESTIA_INSTALL_DIR/snappymail/default.ini $SM_CONFIG_DIR/data/_data_/_default_/domains
    mkdir -p $SM_CONFIG_DIR/data/_data_/_default_/plugins
    cp -f -r $HESTIA_INSTALL_DIR/snappymail/plugins/hestia-change-password/ $SM_CONFIG_DIR/data/_data_/_default_/plugins
    mkdir -p $SM_CONFIG_DIR/data/_data_/_default_/plugins/add-x-originating-ip-header
    # Download add-x-originating-ip-header from snappymail github
    wget --quiet -O $SM_CONFIG_DIR/data/_data_/_default_/plugins/add-x-originating-ip-header/index.php https://raw.githubusercontent.com/the-djmaze/snappymail/master/plugins/add-x-originating-ip-header/index.php
    wget --quiet -O $SM_CONFIG_DIR/data/_data_/_default_/plugins/add-x-originating-ip-header/LICENSE https://raw.githubusercontent.com/the-djmaze/snappymail/master/plugins/add-x-originating-ip-header/LICENSE

    cp -f $HESTIA_INSTALL_DIR/snappymail/plugins/plugin-add-x-originating-ip-header.ini $SM_CONFIG_DIR/data/_data_/_default_/configs/plugin-add-x-originating-ip-header.ini
    cp -f $HESTIA_INSTALL_DIR/snappymail/plugins/plugin-hestia-change-password.ini $SM_CONFIG_DIR/data/_data_/_default_/configs/plugin-hestia-change-password.ini

    sed -i "s/%hostname%/$(hostname)/g" $SM_CONFIG_DIR/data/_data_/_default_/configs/plugin-hestia-change-password.ini
    sed -i "s/%port%/$BACKEND_PORT/g" $SM_CONFIG_DIR/data/_data_/_default_/configs/plugin-hestia-change-password.ini


    chown -R  www-data:www-data ./data
    chown -R  www-data:www-data $SM_CONFIG_DIR/

    rm  ${SM_INSTALL_DIR}/${SM_FILE}
    # Add robots.txt
    echo "User-agent: *" > $SM_INSTALL_DIR/robots.txt
    echo "Disallow: /" >> $SM_INSTALL_DIR/robots.txt

    # Updating hestia.conf
    if [ -z "$(grep WEBMAIL_SYSTEM $HESTIA/conf/hestia.conf)" ]; then
        $BIN/v-change-sys-config-value 'WEBMAIL_SYSTEM' 'snappymail'
    else
        if [  -z "$(echo "$WEBMAIL_SYSTEM" | grep -w 'snappymail')" ]; then
           if [ -n "$WEBMAIL_SYSTEM" ]; then
               $BIN/v-change-sys-config-value 'WEBMAIL_SYSTEM' "snappymail,$WEBMAIL_SYSTEM"
           else
               $BIN/v-change-sys-config-value 'WEBMAIL_SYSTEM' "snappymail"
           fi
        fi
    fi

else
   [ ! -f "${RC_INSTALL_DIR}/${RC_FILE}" ] && wget "$SM_URL" --quiet -O "${SM_INSTALL_DIR}/${SM_FILE}"
   version=$(cat $SM_INSTALL_DIR/data/VERSION);

   tar -xzf snappymail-latest.tar.gz "data/VERSION" $SM_INSTALL_DIR/
   version_source=$(cat $SM_INSTALL_DIR/VERSION);

   # Check version inside .tar.gz file in case hestia didn't update yet
   if [ "$version" != "$version_source" ]; then
       tar -xzf ${SM_INSTALL_DIR}/${SM_FILE}
       rm $SM_INSTALL_DIR/$SM_FILE
    fi
    rm ${SM_INSTALL_DIR}/VERSION
fi

#----------------------------------------------------------#
#                       Hestia                             #
#----------------------------------------------------------#

if [ "$UPDATE" = "yes" ]; then
    $BIN/v-log-action "system" "Info" "Plugins" "SnappyMail updated (Version: $version)."
else
    $BIN/v-log-action "system" "Info" "Plugins" "SnappyMail enabled (Version: $version)."
fi
log_event "$OK" "$ARGUMENTS"