#!/bin/bash

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

source _common.sh
source experimental_helpers/ynh_exec_as
source experimental_helpers/ynh_composer
source experimental_helpers/ynh_add_swap
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)
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=$(ynh_app_setting_get --app=$app --key=db_pwd)
old_project_version=$(ynh_app_setting_get --app=$app --key=project_version)
old_core_version=$(ynh_app_setting_get --app=$app --key=core_version)
old_ldap_version=$(ynh_app_setting_get --app=$app --key=ldap_version)

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

upgrade_type=$(ynh_check_app_version_changed)

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

# 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

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
        ynh_legacy_permissions_delete_all

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

# Remove the v before version number
if [[ $old_project_version == "v*" ]]; then $old_project_version = ${old_project_version:1}; fi

# Remove bazaar_extension if it exists
bazaar_extension=$(ynh_app_setting_get --app=$app --key=bazaar_extension)
if [ ! -z "$bazaar_extension" ]; then
	ynh_app_setting_delete --app=$app --key=bazaar_extension
fi

# Remove SSOwat if it exists
ssowat_extension=$(ynh_app_setting_get --app=$app --key=ssowat_extension)
if [ ! -z "$ssowat_extension" ]; then
	ynh_exec_warn_less ynh_composer_exec --phpversion=$phpversion --workdir=$final_path --commands=\"remove tituspijean/flarum-ext-auth-ssowat\"
	ynh_app_setting_delete --app=$app --key=ssowat_extension
fi

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

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

	# Create a temporary directory
	tmpdir="$(mktemp -d)"
	cp -R $final_path/* $tmpdir

	# Deleting current app directory
	ynh_secure_remove --file="$final_path"

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

	# Copy config.php back into Flarum
	cp -f $tmpdir/config.php $final_path

	# Copy assets from old app version. Can be either in root folder or in "public" folder
	if [ -d $tmpdir/assets ]; then
		cp -Rf $tmpdir/assets $final_path/public
	fi
	if [ -d $tmpdir/public/assets ]; then
		cp -Rf $tmpdir/public/assets $final_path/public
	fi

	# Clean temp directory
	ynh_secure_remove --file="$tmpdir"
fi

#=================================================
# 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=2

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# 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
# Adding it to www-data group
usermod -a -G www-data $app

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

# Create a dedicated php-fpm config
ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)

#=================================================
# SPECIFIC UPGRADE
#=================================================
# ADD SWAP
#=================================================
ynh_script_progression --message="Adding swap..."

ynh_add_swap --size=$swap_needed

#=================================================
# COMPOSER AND FLARUM UPGRADE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Installing composer dependencies..." --weight=5

	# Set right permissions
	chown -R $app:www-data $final_path

	# Install Composer and Flarum
	ynh_exec_warn_less ynh_install_composer --phpversion=$phpversion --workdir=$final_path

	# Perform migrations and clear cache
	pushd $final_path
		ynh_script_progression --message="Upgrading Flarum and its extensions..." --weight=1
		ynh_exec_warn_less ynh_composer_exec --phpversion=$phpversion --workdir=$final_path --commands=\"require tituspijean/flarum-ext-auth-ldap:$ldap_version --no-update\"
		ynh_exec_warn_less ynh_composer_exec --phpversion=$phpversion --workdir=$final_path --commands=\"require flarum/core:$core_version --prefer-dist --update-no-dev -a --update-with-all-dependencies\"
		exec_as $app php$phpversion flarum migrate
		exec_as $app php$phpversion flarum cache:clear
	popd
fi

#=================================================
# FLARUM EXTENSIONS
#=================================================

if ! exec_as $app php$phpversion flarum info | grep -q "tituspijean-auth-ldap" | grep -q $ldap_version;
then
	# Install and activate the LDAP auth extension
	activate_flarum_extension $db_name "tituspijean-auth-ldap"
	# Configure LDAP auth extension
	ynh_mysql_connect_as --user=$app --password="$db_pwd" --database=$db_name < ../conf/ldap.sql
fi

# Install, activate and set language extensions
case $language in
  fr)
    ynh_script_progression --message="Installing French extension..." --weight=2
    ynh_exec_warn_less ynh_composer_exec --phpversion=$phpversion --workdir=$final_path --commands=\"require qiaeru/lang-french\"
    activate_flarum_extension $db_name "qiaeru-lang-french"
    sql_command="UPDATE \`settings\` SET \`value\` = 'fr' WHERE \`settings\`.\`key\` = 'default_locale'"
    ynh_mysql_execute_as_root "$sql_command" $db_name
    ;;
  de)
    ynh_script_progression --message="Installing German extension..." --weight=2
    ynh_exec_warn_less ynh_composer_exec --phpversion=$phpversion --workdir=$final_path --commands=\"require cbmainz/flarum-de\"
    activate_flarum_extension $db_name "cbmainz-de"
    sql_command="UPDATE \`settings\` SET \`value\` = 'de' WHERE \`settings\`.\`key\` = 'default_locale'"
    ynh_mysql_execute_as_root "$sql_command" $db_name
    ;;
esac
ynh_print_info "You may need to manually enable your language extension in Flarum's admin panel."

# Clear cache
pushd $final_path
	exec_as $app php$phpversion flarum cache:clear
popd

# Save version settings
ynh_app_setting_set $app project_version $project_version
ynh_app_setting_set $app core_version $core_version
ynh_app_setting_set $app ldap_version $ldap_version

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --weight=1

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

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

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

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