#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Stopping system tomcat..." --weight=1

# Guacamole depends on Apache Tomcat.
# But installing Tomcat from the Debian repos automatically enables and starts it.
# So we stop and disable it, unless Tomcat was already enabled or started by the user beforehand

tomcat_enabled=""
tomcat_active=""
if [ "$(systemctl cat $tomcat_version --quiet)" ]; then
	if (systemctl is-enabled $tomcat_version --quiet); then
		tomcat_enabled=1
	fi
	if (systemctl is-active $tomcat_version --quiet); then
		tomcat_active=1
	fi
fi

if [ $tomcat_enabled ]; then
	systemctl disable $tomcat_version --quiet
fi
if [ $tomcat_active ]; then
	systemctl stop $tomcat_version --quiet
fi

#=================================================
# CREATE DEDICATED USERS
#=================================================
ynh_script_progression --message="Configuring system users..." --weight=1

# Create system users
ynh_system_user_create --username="$app-guacd" --groups="$app"
ynh_system_user_create --username="$app-tomcat" --groups="$app"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCES
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=3

# Download, check integrity, uncompress and patch the source from app.src
setup_sources

mkdir -p "/var/log/$app/tomcat/" "/var/log/$app/guacd/" "/var/log/$app/tomcat/"
mkdir -p "$install_dir/etc/"
ln -s -f "$install_dir/etc/$tomcat_version" "$install_dir/var/lib/$tomcat_version/conf"
ln -s -f "/var/log/$app/tomcat/" "$install_dir/var/lib/$tomcat_version/logs"
ln -s -f "/var/cache/$app-$tomcat_version" "$install_dir/var/lib/$tomcat_version/work"

#=================================================
# ADD CONFIGURATIONS
#=================================================

ynh_add_config --template="guacamole.properties" --destination="$install_dir/etc/guacamole/guacamole.properties"

ynh_replace_string --match_string="8080" --replace_string="$port" --target_file="$install_dir/etc/$tomcat_version/server.xml"

_set_permissions

#=================================================
# COMPILE GUACD
#=================================================
ynh_script_progression --message="Compiling guacd..." --weight=30

pushd "$install_dir/.guacd-src"
	LDFLAGS="-lrt" ./configure --enable-allow-freerdp-snapshots --prefix="$install_dir" --datadir="$install_dir" --with-freerdp-plugin-dir="$install_dir/lib/x86_64-linux-gnu/freerdp2"
	ynh_exec_warn_less make -j $(nproc)
	ynh_exec_warn_less make install
popd

#=================================================
# FINISH SETTING UP DATABASE
#=================================================
ynh_script_progression --message="Setting up database files..." --weight=2

ynh_replace_string --match_string="guacadmin" --replace_string="$admin" -f "$install_dir/etc/guacamole/extensions/mysql-schema/002-create-admin-user.sql"
ynh_replace_string --match_string="CA458A7D494E3BE824F5E1E175A1556C0F8EEF2C2D7DF3633BEC4A29C4411960" --replace_string="$(hexdump -n 32 -e '4/4 "%08X"' /dev/urandom)" -f "$install_dir/etc/guacamole/extensions/mysql-schema/002-create-admin-user.sql"
ynh_replace_string --match_string="FE24ADC5E11E2B25288D1704ABE67A79E342ECC26064CE69C5B3177795A82264" --replace_string="$(hexdump -n 32 -e '4/4 "%08X"' /dev/urandom)" -f "$install_dir/etc/guacamole/extensions/mysql-schema/002-create-admin-user.sql"

ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < "$install_dir/etc/guacamole/extensions/mysql-schema/001-create-schema.sql"
ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < "$install_dir/etc/guacamole/extensions/mysql-schema/002-create-admin-user.sql"
ynh_secure_remove --file="$install_dir/etc/guacamole/extensions/mysql-schema"

#=================================================
# SYSTEM CONFIGURATION
#=================================================
ynh_script_progression --message="Adding system configurations related to $app..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

# Create dedicated systemd configs
ynh_add_systemd_config --service="$app-guacd" --template="guacd.service"
yunohost service add "$app-guacd" --description="Guacamole server" --log="/var/log/$app/guacd.log"

ynh_add_systemd_config --service="$app-tomcat" --template="tomcat.service"
yunohost service add "$app-tomcat" --description="Guacamole client" --log="/var/log/$app/tomcat.log"

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile="/var/log/$app/tomcat/catalina.out" --specific_user="$app-tomcat/$app-tomcat"

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --logpath="/var/log/syslog" --failregex='o.a.g.r.auth.AuthenticationService - Authentication attempt from <HOST> for user "[^"]*" failed\.$'

#=================================================
# START SYSTEMD SERVICES
#=================================================
ynh_script_progression --message="Starting $app's systemd services..." --weight=1

# Start systemd services
ynh_systemd_action --service_name="$app-guacd" --action="start" --log_path="/var/log/$app/guacd.log"
ynh_systemd_action --service_name="$app-tomcat" --action="start" --log_path="/var/log/$app/tomcat.log"

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of $app completed" --last