#!/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 () {
	#### Remove this function if there's nothing to clean before calling the remove script.
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
port=$(ynh_app_setting_get --app=$app --key=port)
port_wg=$(ynh_app_setting_get --app=$app --key=port_wg)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..." --weight=1

test ! -d $final_path \
	|| ynh_die --message="There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================

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

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=1

ynh_restore_file --origin_path="$final_path"
ynh_restore_file --origin_path="/etc/wireguard"

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..." --weight=1

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

# Restore sudoers file
ynh_restore_file --origin_path="/etc/sudoers.d/${app}_ynh"

#=================================================
# RESTORE USER RIGHTS
#=================================================

# Restore permissions on app files
chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app: "$final_path"

chmod 750 /etc/wireguard
chmod -R o-rwx /etc/wireguard
chown -R $app: /etc/wireguard

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=5

# Define and install dependencies

# Add buster-backports gpg key
ynh_install_repo_gpg --key="https://ftp-master.debian.org/keys/archive-key-10.asc" --name="$app"

# Add buster-backports repo
ynh_add_repo --uri="http://deb.debian.org/debian" --suite="buster-backports" --component="main" --name="$app"

# Add pin-priority for wireguard packages
ynh_pin_repo --package="wireguard*" --pin="origin deb http://deb.debian.org/debian buster-backports main" --priority=995 --name="$app"

# Update the list of package with the new repo
ynh_package_update

ynh_add_app_dependencies --package="$pkg_dependencies"

#Remove buster-backports repo and pin-priority
ynh_remove_extra_repo --name=$app

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..." --weight=1

ynh_restore_file --origin_path=/etc/systemd/system/wireguard_ui.service
ynh_restore_file --origin_path=/etc/systemd/system/wireguard_ui_conf.path
ynh_restore_file --origin_path=/etc/systemd/system/wireguard_ui_conf.service

systemctl enable --quiet wireguard_ui.service
systemctl enable --quiet wireguard_ui_conf.path
systemctl enable --quiet wireguard_ui_conf.service

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add wg-quick@wg0 --description "WireGuard VPN" --needs_exposed_ports "$port_wg" --test_status "wg show | grep wg0"
yunohost service add wireguard_ui --description "WireGuard UI"

#=================================================
# RESTORE VARIOUS FILES
#=================================================

ynh_restore_file --origin_path=$(jq -r ".config_file_path" $final_path/db/server/global_settings.json) --not_mandatory

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

ynh_systemd_action --service_name=wireguard_ui --action="start" --line_match="http server started" --log_path="systemd" --timeout=30
sleep 5

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX AND PHP-FPM
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Restoration completed for $app. You may need to reboot your server before being able to start the WireGuard service." --last