#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_normalize_url_path --path_url $(ynh_app_setting_get --app $app --key path))
final_path=$(ynh_app_setting_get --app $app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
secret=$(ynh_app_setting_get --app $app --key=secret)
db_pwd=$(ynh_app_setting_get --app=$app --key mysqlpwd)
db_user=$app

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Checking backware compatibility..." --weight=10

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path=/opt/yunohost/$app
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

# If path_url doesn't exist, create it
if [ -z "$path_url" ]; then
	path_url=$(ynh_app_setting_get --app=$app --key=path)
	ynh_app_setting_set --app=$app --key=path --value="$path_url"
	ynh_app_setting_delete "$app" path
fi

# Detect old installation style
if [ -e /etc/init.d/ffsync ]; then
	service ffsync stop
	update-rc.d -f ffsync remove

	ynh_secure_remove --file=/etc/init.d/ffsync
	ynh_secure_remove --file=/var/log/ffsync.log
	ynh_secure_remove --file=/opt/yunohost/ffsync

	yunohost service remove "$app"
fi

# Remove old service ending with  ".service"
if ynh_exec_warn_less yunohost service status "uwsgi-app@$app.service" >/dev/null
then
	yunohost service remove uwsgi-app@$app.service
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=10

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


#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..."
ynh_install_app_dependencies $pkg_dependencies

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

# Download, check integrity, uncompress and patch the source from app.src
ynh_script_progression --message="Upgrading source files..." --weight=6
install_sources

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx"
if [ "$path_url" == "/" ]
then
	# $finalnginxconf comes from ynh_add_nginx_config
	# uwsgi_param is only needed for non-root installation
	is_subpath="# "
else
	is_subpath=" "
fi
ynh_add_nginx_config 'is_subpath'

#=================================================
# CREATE DEDICATED USER
#=================================================

ynh_system_user_create --username="$app"

#=================================================
# SPECIFIC UPGRADE
#=================================================
# SETUP UWSGI
ynh_script_progression --message="Configuring application..."

# create config file syncserver.ini
rm "$final_path/syncserver.ini"
ln -s "/etc/uwsgi/apps-available/$app.ini" "$final_path/syncserver.ini"

# configure uwsgi
ynh_add_uwsgi_service 'domain secret db_user db_pwd db_name'

# Upgrade database table
ynh_mysql_execute_as_root --sql='ALTER TABLE `users` ADD COLUMN IF NOT EXISTS `keys_changed_at` BIGINT NULL AFTER `replaced_at`;' --database=$db_name
ynh_mysql_execute_as_root --sql='ALTER TABLE `users` ADD COLUMN IF NOT EXISTS `node` VARCHAR(255) NULL AFTER `keys_changed_at`;' --database=$db_name

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

# Set permissions on app files
set_permissions

#=================================================
# SETUP SSOWAT
#=================================================

ynh_app_setting_set --app=$app --key=skipped_uris --value="/"

ynh_script_progression --message="Restarting $app services..." --weight=3
ynh_systemd_action --service_name "uwsgi-app@$app.service" \
    --line_match "WSGI app 0 \(mountpoint='[/[:alnum:]_-]*'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/$app.log"

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

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