#!/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=2

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
superuser=$(ynh_app_setting_get --app=$app --key=superuser)
password=$(ynh_app_setting_get --app=$app --key=password)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
conf_dir=$(ynh_app_setting_get --app=$app --key=conf_dir)
port=$(ynh_app_setting_get --app=$app --key=port)
stream_port=$(ynh_app_setting_get --app=$app --key=stream_port)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=4

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting
	# 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
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=3

ynh_systemd_action --service_name=$app --action="stop"

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

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
    ynh_legacy_permissions_delete_all

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADE TVHEADEND DEB PACKAGE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
    #=================================================
    # UPGRADE DEPENDENCIES
    #=================================================
    ynh_script_progression --message="Upgrading dependencies..." --weight=15

    if [ -n "$(uname -m | grep arm)" ]
    then
        ynh_install_app_dependencies $pkg_dependencies_rb
    else
        ynh_install_app_dependencies $pkg_dependencies_x86
    fi

    #=================================================
    # DOWNLOAD TVHEADEND DEB PACKAGE
    #=================================================
    ynh_script_progression --message="Downloading Tvheadend..." --weight=5

    temp_folder="$(mktemp -d)"
    tvheadend_deb_dst="$temp_folder/tvheadend_deb.deb"

    if [ -n "$(uname -m | grep arm)" ]
    then
        tvheadend_deb_url="$tvheadend_deb_arm"
    else
        tvheadend_deb_url="$tvheadend_deb_x86"
    fi

    ynh_exec_quiet wget -q -O $tvheadend_deb_dst $tvheadend_deb_url

    #=================================================
    # INSTALL TVHEADEND DEB PACKAGE
    #=================================================
    ynh_script_progression --message="Upgrading Tvheadend..." --weight=24

    DEBIAN_FRONTEND=noninteractive ynh_exec_warn_less dpkg --force-confold -i $tvheadend_deb_dst

    ynh_secure_remove --file="$temp_folder"

    # The deb install automatically create the hts system user

    # Tvheadend automatically start after install
    # we stop it before the configuration
    ynh_systemd_action --service_name=$app --action="stop"

    #=================================================
    # RESTORE TVHEADEND CONFIG FILES
    #=================================================
    ynh_script_progression --message="Restore/update configuration files..." --weight=1

    # Copy and modify /etc/default/tvheadend
    if [ "$path_url" = "/" ]
    then
        ynh_add_config --template="tvheadend_no_subpath" --destination="/etc/default/tvheadend"
    else
        ynh_add_config --template="tvheadend" --destination="/etc/default/tvheadend"
    fi
fi

#=================================================
# PREVENT TVHEADEND BEING UPGRADED THROUGHT APT
#=================================================

apt-mark hold tvheadend

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

yunohost service add $app --description="TV streaming server and recorder" --needs_exposed_ports $stream_port

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

ynh_systemd_action --service_name=$app --action="start"

#=================================================
# 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, HTSP port is $stream_port" --last