#!/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

if [ ! -f "/etc/logrotate.d/$app" ]; then
    # Fix possibly missing file due to buggy restore:
    ynh_use_logrotate
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=5

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# UPGRADE packages
#=================================================
ynh_script_progression --message="Upgrading packages..." --weight=3

install_jellyfin_packages

#=================================================
# 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
#=================================================
ynh_script_progression --message="Setting up configuration files..." --weight=2

# TODO: investigate if we can avoid overriding system.xml
#ynh_add_config --template="system.xml" --destination="$config_path/system.xml"
ynh_add_config --template="network.xml" --destination="$config_path/network.xml"
ynh_add_config --template="logging.json" --destination="$config_path/logging.json"

#=================================================
# INSTALL LDAP PLUGIN
#=================================================
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="LDAP-Auth.xml" --destination="/var/lib/jellyfin/plugins/configurations/LDAP-Auth.xml"

#=================================================
# YUNOHOST MULTIMEDIA INTEGRATION
#=================================================
ynh_script_progression --message="Adding multimedia directories..." --weight=2

# Build YunoHost multimedia directories
ynh_multimedia_build_main_dir
# Allow Jellyfin to write into these directories
ynh_multimedia_addaccess $app

#=================================================
# 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
yunohost service add $app --description="Jellyfin media center" ${needed_ports:+--needs_exposed_ports} "${needed_ports[@]}"

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