#!/bin/bash

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

source _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

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
discovery=$YNH_APP_ARG_DISCOVERY

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

final_path=/var/lib/jellyfin
config_path=/etc/jellyfin
test ! -e "$final_path" || ynh_die --message="There is already a directory: $final_path "
test ! -e "$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

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=2

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=discovery --value=$discovery
ynh_app_setting_set --app=$app --key=final_path --value=$final_path
ynh_app_setting_set --app=$app --key=config_path --value=$config_path

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

# Find an available port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

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

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=5

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# INSTALL PACKAGES
#=================================================
ynh_script_progression --message="Installing packages..." --weight=1

# 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=$(grep 'SOURCE_URL=' "../conf/server.$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_$architecture.deb" --target_file="../conf/server.$architecture.src"
fi
ynh_setup_source --dest_dir=$tempdir --source_id="server.$architecture"

# Same for web
src_url=$(grep 'SOURCE_URL=' "../conf/web.$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_$version-1_all.deb" --target_file="../conf/web.$architecture.src"
fi
ynh_setup_source --dest_dir=$tempdir --source_id="web.$architecture"

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=6

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=2

# Create a system user
ynh_system_user_create --username=$app

if [ $(grep -q "^render:" /etc/group) ]; then
	# Add user to render group
	adduser $app render
fi

#=================================================
# MODIFY A CONFIG FILE
#=================================================
ynh_script_progression --message="Configuring the settings..." --weight=1

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

# Load services once to generate system.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"

# Disable Setup Wizard
ynh_replace_string --match_string="<IsStartupWizardCompleted>false</IsStartupWizardCompleted>" --replace_string="<IsStartupWizardCompleted>true</IsStartupWizardCompleted>" --target_file="$config_path/system.xml"

# Lower logging verbosity
cp "$config_path/logging.default.json" "$config_path/logging.json"
ynh_replace_string --match_string="\"Default\": \"Information\"" --replace_string="\"Default\": \"Error\"" --target_file="$config_path/logging.json"

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

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

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_script_progression --message="Securing files and directories..."

# Set permissions to 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

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

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

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=1

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi

# Only the admin can access the admin panel of the app (if the app has an admin panel)
ynh_permission_create --permission="admin" --allowed=$admin

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=2

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Installation of $app completed" --last