#!/bin/bash

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

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

#=================================================
# 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=$app --key=path)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
config_path=$(ynh_app_setting_get --app=$app --key=config_path)
port=$(ynh_app_setting_get --app=$app --key=port)
discovery=$(ynh_app_setting_get --app=$app --key=discovery)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

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

# If path keys do not exist, create them
# If config_path is mixed up with final_path, fix them
if [ -z "$config_path" ] || [[ $config_path = "/var/lib/jellyfin" ]]; then
	config_path=/etc/jellyfin
	final_path=/var/lib/jellyfin
	ynh_app_setting_set --app=$app --key=config_path --value=$config_path
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

# If render group exists, and system user doesn't belong to it, add it
if [ $(grep -q "^render:" /etc/group) ] && [ ! $(id -Gn $app | grep -q '\brender\b') ]; then
	adduser $app render
fi

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

if ! ynh_permission_exists --permission="admin"; then
	# Create the required permissions
	ynh_permission_create --permission="admin" --allowed=$admin
fi

# If discovery key does not exist, create it
if [ -z "$discovery" ]; then
	discovery=0
	ynh_app_setting_set --app=$app --key=discovery --value=$discovery
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=3

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# 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
#=================================================
# 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


#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=3

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

# Download the deb files
ynh_setup_source --dest_dir=$tempdir --source_id="ffmpeg.$architecture"
ynh_setup_source --dest_dir=$tempdir --source_id="server.$architecture"
ynh_setup_source --dest_dir=$tempdir --source_id="web.$architecture"

# Install the packages
ynh_exec_warn_less apt-get -f install $tempdir/jellyfin-ffmpeg.deb -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew
ynh_exec_warn_less apt-get -f install $tempdir/jellyfin-server.deb -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew
ynh_exec_warn_less apt-get -f install $tempdir/jellyfin-web.deb -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

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

#=================================================
# MODIFY A CONFIG FILE
#=================================================

# Check if network.xml exists (introduced in v10.7)
if [ -f "/etc/jellyfin/network.xml" ]; then
	ynh_script_progression --message="Configuring the settings..." --weight=1

	ynh_backup_if_checksum_is_different --file="$config_path/network.xml"
	ynh_backup_if_checksum_is_different --file="$config_path/system.xml"

	# Set permissions to app files
	chown -R $app: $final_path

	# Load services once to generate network.xml
	ynh_systemd_action --service_name=$app --action="restart" --log_path="systemd" --line_match="Started Jellyfin Media Server" --timeout=15
	ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd" --line_match="Stopped Jellyfin Media Server" --timeout=15

	# Port config
	ynh_replace_string --match_string="<PublicPort>8096</PublicPort>" --replace_string="<PublicPort>$port</PublicPort>" --target_file="$config_path/network.xml"
	ynh_replace_string --match_string="<HttpServerPortNumber>8096</HttpServerPortNumber>" --replace_string="<HttpServerPortNumber>$port</HttpServerPortNumber>" --target_file="$config_path/network.xml"

	# Enable IPv6
	ynh_replace_string --match_string="<EnableIPV6>false</EnableIPV6>" --replace_string="<EnableIPV6>true</EnableIPV6>" --target_file="$config_path/network.xml"

	# BaseUrl config
	ynh_replace_string --match_string="<BaseUrl />" --replace_string="<BaseUrl>$path_url</BaseUrl>" --target_file="$config_path/network.xml"

	ynh_store_file_checksum --file="$config_path/network.xml"
	ynh_store_file_checksum --file="$config_path/system.xml"
fi

# Lower logging verbosity
# But first, if missing, copy it from its template
if [ ! -f "$config_path/logging.json" ]; then
	cp "$config_path/logging.default.json" "$config_path/logging.json"
fi
ynh_exec_fully_quiet ynh_replace_string --match_string="\"Default\": \"Information\"" --replace_string="\"Default\": \"Error\"" --target_file="$config_path/logging.json"

#=================================================
# INSTALL LDAP PLUGIN
#=================================================

# Install it only if the plugin directory does not exist
if [ ! -e "/var/lib/jellyfin/plugins/LDAP Authentication" ]; then
	ynh_script_progression --message="Installing LDAP plugin..." --weight=2

	ynh_setup_source --dest_dir="/var/lib/jellyfin/plugins/LDAP Authentication" --source_id=ldap
	mkdir -p /var/lib/jellyfin/plugins/configurations/
	ynh_add_config --template="../conf/LDAP-Auth.xml" --destination="/var/lib/jellyfin/plugins/configurations/LDAP-Auth.xml"
fi

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

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

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

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

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

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

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

#=================================================
# RELOAD NGINX
#=================================================
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="Upgrade of $app completed" --last
