#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
datadir=$(ynh_app_setting_get --app=$app --key=datadir)
client_port=$(ynh_app_setting_get --app=$app --key=client_port)
used_start_port=$(ynh_app_setting_get --app=$app --key=used_start_port)
used_end_port=$(ynh_app_setting_get --app=$app --key=used_end_port)
api_port=$(ynh_app_setting_get --app=$app --key=api_port)
guacd_port=$(ynh_app_setting_get --app=$app --key=guacd_port)
key_seed=$(ynh_app_setting_get --app=$app --key=key_seed)
jwt_secret=$(ynh_app_setting_get --app=$app --key=jwt_secret)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..."

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..."

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting
	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..."

ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"
usermod -a -G ssl-cert "$app"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..."

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path/bin" --source_id="$YNH_ARCH"
	ynh_setup_source --dest_dir="$final_path/frontend" --source_id="frontend"
	ynh_setup_source --dest_dir="$final_path/novnc" --source_id="novnc"
fi

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..."

ynh_install_app_dependencies $pkg_dependencies

GUACD_PKG=rport-guacamole_1.4.0_$(lsb_release --id --short | tr '[:upper:]' '[:lower:]')_$(lsb_release --codename --short)_$(uname -m).deb
GUACD_DOWNLOAD=https://bitbucket.org/cloudradar/rport-guacamole/downloads/${GUACD_PKG}
tempdir="$(mktemp -d)"
pushd "$tempdir"
	curl -fLOSs "$GUACD_DOWNLOAD" || (throw_error "Download failed" && return 0)
	DEBIAN_FRONTEND=noninteractive apt-get -y --no-install-recommends install ./"${GUACD_PKG}"
popd
ynh_replace_string --match_string="9445" --replace_string="$guacd_port" --target_file="/etc/default/rport-guacamole"
systemctl restart rport-guacd
ynh_secure_remove --file="$tempdir"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..."

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..."

ynh_add_config --template="../conf/rportd.example.conf" --destination="$final_path/rportd.conf"

chmod 400 "$final_path/rportd.conf"
chown $app:$app "$final_path/rportd.conf"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..."

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add $app --log="/var/log/$app/$app.log" --needs_exposed_ports="$client_port"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log" --line_match="API Listening on"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Upgrade of $app completed"