#!/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)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
language=$(ynh_app_setting_get --app=$app --key=language)

#=================================================
# 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 () {
	if [ -n "$new_phpbb_dir" ]; then
		ynh_secure_remove --file="$new_phpbb_dir"
	fi
	if [ -n "$old_phpbb_dir" ]; then
		ynh_secure_remove --file="$old_phpbb_dir"
	fi
	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

if ! ynh_permission_exists --permission="admin"; then
	# Create the required permissions
	ynh_permission_create --permission="admin" --url="/adm" --allowed=$admin
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=5

	new_phpbb_dir=$(mktemp -d)
	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$new_phpbb_dir"
	ynh_secure_remove --file="$new_phpbb_dir/config.php"
	ynh_secure_remove --file="$new_phpbb_dir/images"
	ynh_secure_remove --file="$new_phpbb_dir/files"
	ynh_secure_remove --file="$new_phpbb_dir/store"

	old_phpbb_dir=$(mktemp -d)

	mv $final_path/* $old_phpbb_dir
	mv $old_phpbb_dir/config.php $final_path/
	mv $old_phpbb_dir/images/ $final_path/
	mv $old_phpbb_dir/files/ $final_path/
	mv $old_phpbb_dir/store/ $final_path/

	mv $new_phpbb_dir/* $final_path

	ynh_secure_remove --file="$old_phpbb_dir"
	ynh_secure_remove --file="$new_phpbb_dir"
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=3

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

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

ynh_exec_as "$app" php${phpversion} "$final_path/bin/phpbbcli.php" -q --no-interaction db:migrate

if [ -e "$final_path/install" ]; then
	mv "$final_path/install" "$final_path/install_old"
fi

#=================================================
# ADD A CRON JOB
#=================================================

cron_path="/etc/cron.d/$app"
ynh_add_config --template="../conf/phpbb.cron" --destination="$cron_path"
chown root: "$cron_path"
chmod 644 "$cron_path"

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

yunohost service add $app --description="Forum bulletin board software solution" --log="/var/log/$app/$app.log"

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