#!/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 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)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
config_path=$(ynh_app_setting_get --app=$app --key=config_path)
discovery=$(ynh_app_setting_get --app=$app --key=discovery)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..." --weight=2

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

architecture=$(dpkg --print-architecture)
if [[ ! "$architecture" =~ ^(amd64|arm64|armhf)$ ]]; then
    ynh_die "Jellyfin is not compatible with your architecture, $architecture, which is neither amd64, arm64, or armhf." 1
fi

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# OPEN PORTS
#=================================================

discovery_service=$discovery
discovery_client=$discovery

if [ $discovery -eq 1 ]; then
        ynh_script_progression --message="Configuring firewall..." --weight=1

        # Open port 1900 for service auto-discovery
        if ynh_port_available --port=$discovery_service_port; then
                ynh_exec_warn_less yunohost firewall allow UDP $discovery_service_port
        else
                discovery_service=0
                ynh_print_warn --message="Port $discovery_service_port (for service auto-discovery) is not available. Continuing nonetheless."
        fi

        # Open port 7359 for client auto-discovery
        if ynh_port_available --port=$discovery_client_port; then
                ynh_exec_warn_less yunohost firewall allow UDP $discovery_client_port
        else
                discovery_client=0
                ynh_print_warn --message="Port $discovery_client_port (for client auto-discovery) is not available. Continuing nonetheless."
        fi
fi

ynh_app_setting_set --app=$app --key=discovery_service --value=$discovery_service
ynh_app_setting_set --app=$app --key=discovery_client --value=$discovery_client

#=================================================
# 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 THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=2

ynh_restore_file --origin_path="$final_path"
ynh_restore_file --origin_path="$config_path"
ynh_restore_file --origin_path="/etc/default/jellyfin" --not_mandatory

#=================================================
# 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

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

# Define and install dependencies
ynh_install_app_dependencies $pkg_dependencies

#=================================================
# REINSTALL PACKAGES
#=================================================
ynh_script_progression --message="Reinstalling packages..." --weight=7

# Create the temporary directory
tempdir="$(mktemp -d)"

# Download the deb files
ynh_setup_source --dest_dir=$tempdir --source_id="ffmpeg.$architecture"
# In case of a new version, the url change from https://repo.jellyfin.org/releases/server/debian/versions/stable/server/X.X.X/jellyfin-server_X.X.X-1_$architecture.deb to https://repo.jellyfin.org/archive/debian/stable/X.X.X/server/jellyfin-server_X.X.X-1_$architecture.deb
src_url=$(grep 'SOURCE_URL=' "../settings/conf/server.$architecture.src" | cut -d= -f2-)
if ! curl --output /dev/null --silent --head --fail "$src_url"; then
	ynh_replace_string --match_string="releases/server/debian/versions/stable/server/$version/jellyfin-server_$version-1_$architecture.deb" --replace_string="archive/debian/stable/$version/server/jellyfin-server_$version-1_$architecture.deb" --target_file="../settings/conf/server.$architecture.src"
fi
ynh_setup_source --dest_dir=$tempdir --source_id="server.$architecture"

# Same for web
src_url=$(grep 'SOURCE_URL=' "../settings/conf/web.$architecture.src" | cut -d= -f2-)
if ! curl --output /dev/null --silent --head --fail "$src_url"; then
	ynh_replace_string --match_string="releases/server/debian/versions/stable/web/$version/jellyfin-web_$version-1_all.deb" --replace_string="archive/debian/stable/$version/web/jellyfin-web_$version-1_all.deb" --target_file="../settings/conf/web.$architecture.src"
fi
ynh_setup_source --dest_dir=$tempdir --source_id="web.$architecture"

# Install the packages
ynh_exec_warn_less dpkg --force-confdef --force-confold -i $tempdir/jellyfin-ffmpeg.deb
ynh_exec_warn_less dpkg --force-confdef --force-confold -i $tempdir/jellyfin-server.deb
ynh_exec_warn_less dpkg --force-confdef --force-confold -i $tempdir/jellyfin-web.deb

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

ynh_restore_file --origin_path="/etc/systemd/system/jellyfin.service.d" --not_mandatory
ynh_restore_file --origin_path="/lib/systemd/system/jellyfin.service"
systemctl enable jellyfin.service --quiet

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

# Build the ports list
needed_ports=()
(( $discovery_service == 1 )) && needed_ports+=( "$discovery_service_port" )
(( $discovery_client == 1 )) && needed_ports+=( "$discovery_client_port" )

# Integrate service and require to expose the ports if needed
if [[ -z ${needed_ports[@]} ]]; then
        yunohost service add $app --description="Jellyfin media center" --log_type="systemd"
else
        yunohost service add $app --description="Jellyfin media center" --log_type="systemd" --needs_exposed_ports ${needed_ports[@]}
fi

#=================================================
# RESTORE USER RIGHTS
#=================================================
ynh_script_progression --message="Restoring user rights..."

# Restore permissions on app files
chown -R $app: $final_path
chown -R $app: $config_path

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

ynh_systemd_action --service_name=$app --action="restart" --log_path="systemd" --line_match="Started Jellyfin Media Server" --timeout=15

#=================================================
# 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" --last