#!/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)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."  --weight=2

# 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 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

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up $app before upgrading (may take a while)..." --weight=7

# 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

#=================================================
# ENSURE DOWNWARD COMPATIBILITY BIS
#=================================================

# Do not remove the file before the backup, to not fail the backup.
# Remove old cron job
ynh_secure_remove --file="/etc/cron.d/$app"

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path --path_url=$path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=7

	# Create a temporary directory
	tmpdir="$(ynh_smart_mktemp --min_size=10)"

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

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

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

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --package="$extra_php_dependencies"

#=================================================
# SPECIFIC UPGRADE
#=================================================
# CONFIGURE TTRSS
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Reconfiguring ttrss..." --weight=2

	# Backup the config file in the temp dir
	cp -a "$final_path/config.php" "$tmpdir/config.php"

	# Replace the old ttrss by the new one
	ynh_secure_remove --file="$final_path"
	mv "$tmpdir" "$final_path"
	ynh_secure_remove --file="$tmpdir"

	# Verify the checksum and backup the file if it's different
	ynh_backup_if_checksum_is_different --file="$final_path/config.php"

	cp ../conf/config.php "$final_path/config.php"

	# Change variables in ttrss configuration
	ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$final_path/config.php"
	db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
	ynh_replace_string --match_string="__DBPWD__" --replace_string="$db_pwd" --target_file="$final_path/config.php"
	ynh_replace_string --match_string="__DOMAINPATH__" --replace_string="https://$domain$path_url" --target_file="$final_path/config.php"

	# Recalculate and store the config file checksum into the app settings
	ynh_store_file_checksum --file="$final_path/config.php"

	#=================================================
	# UPGRADE DATABASE
	#=================================================
	ynh_script_progression --message="Upgrading ttrss database..." --weight=2

	chown -R $app: $final_path
	ynh_exec_as $app php ${final_path}/update.php --update-schema
fi

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=2

# Create a dedicated systemd config
ynh_add_systemd_config

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

# Set permissions to app files
chown -R root: $final_path
chmod 0755 $final_path
chown -R $app $final_path/{cache,feed-icons,lock}

#=================================================
# RESTART TTRSS
#=================================================
ynh_script_progression --message="Restarting ttrss..." --weight=1

ynh_systemd_action --service_name=$app --action=restart

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

yunohost service add $app

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=2

ynh_systemd_action --service_name=nginx --action=reload

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

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