#!/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)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
language=$(ynh_app_setting_get --app=$app --key=language)
calibre_dir=$(ynh_app_setting_get --app=$app --key=calibre_dir)

#=================================================
# CHECK 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=1

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

ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

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

if [ ! -e "$calibre_dir" ]; then
	ynh_print_info "Create calibre library folder $calibre_dir"
	ynh_multimedia_build_main_dir
    ynh_multimedia_addaccess $app
    calibre_dir=/home/yunohost.multimedia/share/eBook
	chown -R $app:www-data $calibre_dir
fi

#Check if metadata.db file exists. If not create it (empty library)
if [ ! -e "$calibre_dir"/metadata.db ]; then
	cp -a ../conf/metadata.db.empty $calibre_dir/metadata.db
	chown $app:www-data $calibre_dir/*
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

#=================================================
# 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=$app --home_dir="$final_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
    ynh_script_progression --message="Upgrading source files..." --weight=1

    # Download, check integrity, uncompress and patch the source from app.src
    ynh_setup_source --dest_dir="$final_path"
fi

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# 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=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=1

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# RESTORE THE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating a calibre directory..." --weight=1

#build multimedia directory
ynh_multimedia_build_main_dir
ynh_multimedia_addaccess $app

calibre_dir="/home/yunohost.multimedia/share/eBook"
ynh_app_setting_set --app=$app --key=calibre_dir --value=$calibre_dir

chmod 750 "$calibre_dir"
chmod -R o-rwx "$calibre_dir"
chown -R $app:www-data "$calibre_dir"

#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..." --weight=1

ynh_add_config --template="../conf/config_local.php" --destination="$final_path/config_local.php"

chmod 400 "$final_path/config_local.php"
chown $app "$final_path/config_local.php"

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