#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --time --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)
language=$(ynh_app_setting_get --app=$app --key=language)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_pwd=$(ynh_app_setting_get "$app" mysqlpwd)

#=================================================
# CHECK VERSION
#=================================================

### This helper will compare the version of the currently installed app and the version of the upstream package.
### $upgrade_type can have 2 different values
### - UPGRADE_APP if the upstream app version has changed
### - UPGRADE_PACKAGE if only the YunoHost package has changed
### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
upgrade_type=$(ynh_check_app_version_changed)

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

#
# N.B. : the followings setting migrations snippets are provided as *EXAMPLES*
# of what you may want to do in some cases (e.g. a setting was not defined on
# some legacy installs and you therefore want to initiaze stuff during upgrade)
#

# 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 "$final_path" ]; then
#	final_path=/var/www/$app
#	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
#fi

### If nobody installed your app before 4.1,
### then you may safely remove these lines

# 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" --url="/admin" --allowed=$admin
fi

# Create a permission if needed
if ! ynh_permission_exists --permission="api"; then
	ynh_permission_create --permission="api" --url "/api" --allowed="visitors" --show_tile="false" --protected="true"
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --time --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
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

# Deactivate cron jobs
ynh_secure_remove --file="/etc/cron.d/$app"

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

	# Backup user contents
	mv "$final_path" "$final_path.old"

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

	# Restore user contents
	cp -a "$final_path.old/uploads/." "$final_path/uploads/."
	cp -a "$final_path.old/protected/runtime" "$final_path/protected/runtime"
	cp -a "$final_path.old/protected/config/." "$final_path/protected/config/"
	cp -a "$final_path.old/protected/modules/." "$final_path/protected/modules/"
	cp -a "$final_path.old/themes/." "$final_path/themes/"

	# Delete old source
	rm -rf "$final_path.old"
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --time --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --time --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --time --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app

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

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# MIGRATE DATABASE
#=================================================
ynh_script_progression --message="Migrating database..." --time --weight=1

sudo -u $app /usr/bin/php$YNH_PHP_VERSION $final_path/protected/yii migrate/up --includeModuleMigrations=1

#=================================================
# UPDATE MODULES
#=================================================
ynh_script_progression --message="Updating modules..." --time --weight=1

sudo -u $app /usr/bin/php$YNH_PHP_VERSION $final_path/protected/yii module/update-all

#=================================================
# REINSTALL CRONTAB
#=================================================
ynh_script_progression --message="Upgrading crontab..." --time --weight=1

ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/${app}"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions on app files
chown -R root: $final_path

chown -R $app $final_path/assets
chown -R $app $final_path/protected/config
chown -R $app $final_path/protected/modules
chown -R $app $final_path/protected/runtime
chown -R $app $final_path/uploads/*

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --time --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

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