#!/bin/bash

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

# Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
source ../settings/scripts/_common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# 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)
config_path=$(ynh_app_setting_get --app=$app --key=config_path)
datadir=$(ynh_app_setting_get --app=$app --key=datadir)
node_type=$(ynh_app_setting_get --app=$app --key=node_type)
http_port=$(ynh_app_setting_get --app=$app --key=http_port)
rpc_port=$(ynh_app_setting_get --app=$app --key=rpc_port)
serf_port=$(ynh_app_setting_get --app=$app --key=serf_port)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..."

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..."

# Create the dedicated user (if not existing)
ynh_system_user_create --username=$app

#=================================================
# RESTORE THE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Restoring the data directory..."

ynh_restore_file --origin_path="$datadir" --not_mandatory

mkdir -p $datadir

chmod 750 "$datadir"
chmod -R o-rwx "$datadir"
chown -R $app:$app "$datadir"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..."

if [ "$node_type" == "client" ]
then
	ynh_install_app_dependencies $client_pkg_dependencies
fi
ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"

#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the NGINX web server configuration..."

ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# RESTORE VARIOUS FILES
#=================================================
ynh_script_progression --message="Restoring various files..."

ynh_restore_file --origin_path="$config_path"

chmod 750 "$config_path"
chmod -R o-rwx "$config_path"
chown -R $app:$app "$config_path"

# Open the port
ynh_script_progression --message="Configuring firewall..."
ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $rpc_port
needs_exposed_ports="$rpc_port"
if [ "$node_type" == "server" ]
then
	ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $serf_port
	needs_exposed_ports="$serf_port $needs_exposed_ports"
fi

if [ "$node_type" == "client" ]
then

	lxc_bridge=$(ynh_app_setting_get --app=$app --key=lxc_bridge)
	plage_ip=$(ynh_app_setting_get --app=$app --key=plage_ip)
	main_iface=$(ip route | grep default | awk '{print $5;}')
	ynh_app_setting_set --app=$app --key=main_iface --value=$main_iface
	ynh_add_config --template="../conf/lxc_bridge" --destination="/etc/network/interfaces.d/$lxc_bridge"
	ifup $lxc_bridge --interfaces=/etc/network/interfaces.d/$lxc_bridge
	iptables -A FORWARD -i $lxc_bridge -o $main_iface -j ACCEPT
	iptables -A FORWARD -i $main_iface -o $lxc_bridge -j ACCEPT
	iptables -t nat -A POSTROUTING -s $plage_ip.0/24 -j MASQUERADE
fi

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..."

ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
systemctl enable $app.service --quiet

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the logrotate configuration..."

mkdir -p /var/log/$app
chown -R $app:$app "/var/log/$app"
ynh_restore_file --origin_path="/etc/logrotate.d/$app"

#=================================================
# 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 $needs_exposed_ports

#=================================================
# 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="Nomad agent started"

#=================================================
# GENERIC FINALIZATION
#=================================================
# 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="Restoration completed for $app"