#!/bin/bash

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

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

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

#REMOVEME? app=$YNH_APP_INSTANCE_NAME

#REMOVEME? domain=$(ynh_app_setting_get --app=$app --key=domain)
#REMOVEME? path=$(ynh_app_setting_get --app=$app --key=path)
#REMOVEME? is_public=$(ynh_app_setting_get --app=$app --key=is_public)
#REMOVEME? port=$(ynh_app_setting_get --app=$app --key=port)
#REMOVEME? #REMOVEME? install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
#REMOVEME? secret=$(ynh_app_setting_get --app=$app --key=secret)
#REMOVEME? db_name=$(ynh_app_setting_get --app=$app --key=db_name)
#REMOVEME? db_user=$db_name
#REMOVEME? db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
#REMOVEME? theme=$(ynh_app_setting_get --app=$app theme)
#REMOVEME? hashed_password=$(ynh_app_setting_get --app=$app --key=hashed_password)

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

upgrade_type=$(ynh_check_app_version_changed)

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

# Backup the current version of the app
#REMOVEME? ynh_backup_before_upgrade
#REMOVEME? ynh_clean_setup () {
	ynh_clean_check_starting
	# Restore it if the upgrade fails
#REMOVEME? 	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
#REMOVEME? ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..."

ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"

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

# If install_dir doesn't exist, create it
if [ -z "$install_dir" ]; then
#REMOVEME? 	install_dir=/var/www/$app
#REMOVEME? 	ynh_app_setting_set --app=$app --key=install_dir --value=$install_dir
fi

if [ -z "$db_pwd" ]; then
#REMOVEME? 	db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)	# Fix old db_pwd
	if [ -z "$db_pwd" ]; then
#REMOVEME? 		ynh_psql_test_if_first_run
		db_name=$(ynh_sanitize_dbid --db_name="$app")
		db_user=$db_name
		# Initialize database and store postgres password for upgrade
#REMOVEME? 		ynh_psql_setup_db --db_user="$db_user" --db_name="$db_name"
#REMOVEME? 		ynh_app_setting_set --app="$app" --key=db_name --value="$db_name"
#REMOVEME? #REMOVEME? 		db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd) # Password created in ynh_psql_setup_db function
	else
		ynh_app_setting_delete --app=$app --key=db_pwd
#REMOVEME? 		ynh_app_setting_set --app=$app --key=psqlpwd --value=$db_pwd
	fi
fi

if [ -z "$theme" ]; then
	theme="milligram"
	ynh_app_setting_set --app=$app --key=theme --value=$theme
fi

if [ -z "$hashed_password" ]; then
	# Generate random password
	password=$(ynh_string_random --length=8)
	hashed_password=$(echo -n $password | sha256sum | cut -d' ' -f1)

	echo "The new version of LSTU provide an admin and a stats area which required a password." > mail_to_send
	echo "" >> mail_to_send
	echo "This password is: $password" >> mail_to_send

	ynh_send_readme_to_admin --app_message="mail_to_send" --type="upgrade"
	
#REMOVEME? 	ynh_app_setting_set --app=$app --key=hashed_password --value=$hashed_password
fi

# In previous versions, the port was mistakenly exposed to the outside world >_>
if yunohost firewall list | grep -q "\- $port$"
then
	ynh_script_progression --message="Closing port $port..."
	ynh_exec_warn_less yunohost firewall disallow TCP $port
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
#REMOVEME? ynh_script_progression --message="Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
#REMOVEME? ynh_system_user_create --username=$app --home_dir="$install_dir"

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

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

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

chmod 750 "$install_dir"
chmod -R o-rwx "$install_dir"
chown -R $app:www-data "$install_dir"

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
#REMOVEME? ynh_script_progression --message="Upgrading dependencies..."

#REMOVEME? ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..."

#REMOVEME? if [ $is_public -eq 0 ];
then
	ynh_add_config --template="../conf/lstu.conf.ldap" --destination="$install_dir/lstu.conf"
else
	ynh_add_config --template="../conf/lstu.conf.template" --destination="$install_dir/lstu.conf"
fi

#=================================================
# BUILD LSU
#=================================================
ynh_script_progression --message="Building lstu..."

pushd $install_dir
	carton install --deployment --without=sqlite --without=mysql
popd

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

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..."

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

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

yunohost service add $app --log="/var/log/$app.log" --log="/var/www/$app/log/production.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

ynh_systemd_action --service_name=$app --action=reload --line_match="Reloaded Shortened URLs service." --log_path="systemd"

#=================================================
# SETUP SSOWAT
#=================================================
#REMOVEME? ynh_script_progression --message="Configuring permissions..."

# Everyone can access the app.
# The "main" permission is automatically created before the install script.
#REMOVEME? ynh_permission_update --permission="main" --add="visitors"

#REMOVEME? if [ $is_public -eq 0 ]
then
	# If the app is private, only the shortened URLs are publics.
	if [ "$path" == "/" ]; then
		# If the path is /, clear it to prevent any error with the regex.
		path=""
	fi
	# Modify the domain to be used in a regex
	domain_regex=$(echo "$domain" | sed 's@-@.@g')
#REMOVEME? 	ynh_app_setting_set --app=$app --key=protected_regex --value="$domain_regex$path/login$","$domain_regex$path/logout$","$domain_regex$path/api$","$domain_regex$path/extensions$","$domain_regex$path/stats$","$domain_regex$path/d/.*$","$domain_regex$path/a$","$domain_regex$path/$"
fi

#=================================================
# RELOAD NGINX
#=================================================
#REMOVEME? ynh_script_progression --message="Reloading NGINX web server..."

#REMOVEME? ynh_systemd_action --service_name=nginx --action=reload

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

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