#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)
port=$(ynh_app_setting_get $app port)
final_path=$(ynh_app_setting_get $app final_path)
secret=$(ynh_app_setting_get $app secret)
db_name=$(ynh_app_setting_get $app db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get $app psqlpwd)
max_file_size=$(ynh_app_setting_get $app max_file_size)
db_manager=$(ynh_app_setting_get $app db_manager)

#=================================================
# FIX OLD THINGS
#=================================================

if [ "$is_public" = "Yes" ]; then
	ynh_app_setting_set $app is_public 1	# Fixe is_public en booléen
	is_public=1
elif [ "$is_public" = "No" ]; then
	ynh_app_setting_set $app is_public 0
	is_public=0
fi

if [ "${#final_path}" -eq 0 ]
then	# Si final_path n'est pas renseigné dans la config yunohost, cas d'ancien script, code final_path en dur
	final_path=/var/www/$app
fi

if [ -z "$db_pwd" ]; then
	# Create postgresql database
	ynh_psql_test_if_first_run
	db_name=$(ynh_sanitize_dbid "$app")
	db_user=$db_name
	ynh_app_setting_set "$app" db_name "$db_name"
	# Initialize database and store postgres password for upgrade
	ynh_psql_setup_db "$db_name" "$db_user"
	db_pwd=$(ynh_app_setting_get $app psqlpwd) # Password created in ynh_psql_setup_db function
fi

if [ -z "$max_file_size" ]; then
	max_file_size=100 # 100 Mo
fi

# If db_manager is empty, use sqlite for a backward compatibility
if [ -z "$db_manager" ]; then
	db_manager="sqlite"
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_print_info "Backing up the app before upgrading (may take a while)..."

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting
	# 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
#=================================================
ynh_print_info "Upgrading source files..."

ynh_install_app_dependencies build-essential libssl-dev libio-socket-ssl-perl liblwp-protocol-https-perl libpq-dev postgresql cpanminus

ynh_setup_source "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_print_info "Upgrading nginx web server configuration..."

# Create a dedicated nginx config
ynh_add_nginx_config max_file_size

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info "Making sure dedicated system user exists..."

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

#=================================================
# SPECIFIC UPGRADE
#=================================================
# SETUP LUFI
#=================================================
ynh_print_info "Configuring lufi..."

cp ../conf/lufi.conf.template "${final_path}/lufi.conf"
ynh_replace_string "__DOMAIN__" "$domain" "${final_path}/lufi.conf"
ynh_replace_string "__PATH__" "$path_url" "${final_path}/lufi.conf"
ynh_replace_string "__PORT__" "$port" "${final_path}/lufi.conf"
ynh_replace_string "__DB_NAME__" "$db_name"  "${final_path}/lufi.conf"
ynh_replace_string "__DB_USER__" "$db_user"  "${final_path}/lufi.conf"
ynh_replace_string "__DB_PWD__" "$db_pwd" "${final_path}/lufi.conf"
ynh_replace_string "__MAX_FILE_SIZE__" "$max_file_size" "${final_path}/lufi.conf"
ynh_replace_string "__DB_MANAGER__" "$db_manager" "${final_path}/lufi.conf"
if [ $max_file_size -eq 0 ]; then # Comment the limitation line if no limit
	ynh_replace_string "max_file_size" "#max_file_size" "${final_path}/lufi.conf"
fi

ynh_replace_string "__SECRET__" "$secret" "${final_path}/lufi.conf"
if [ $is_public -eq 0 ];
then
	ynh_replace_string "__IS_PUBLIC__" "" "${final_path}/lufi.conf"
else
	ynh_replace_string "__IS_PUBLIC__" "#" "${final_path}/lufi.conf"
fi
ynh_store_file_checksum "${final_path}/lufi.conf"

#=================================================
# SETUP CRON
#=================================================

cp ../conf/cron_lufi /etc/cron.d/$app
ynh_replace_string "__FINALPATH__" "$final_path/" "/etc/cron.d/$app"
chmod +x $final_path/script/lufi

#=================================================
# SECURING FILES AND DIRECTORIES
#=================================================

chown -R $app: "$final_path"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_print_info "Upgrading systemd configuration..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# Install lufi's dependencies via carton
#=================================================

pushd $final_path
if [ $db_manager = "postgresql" ]; then
	carton install --deployment --without=sqlite --without=mysql
else
	carton install --deployment --without=postgresql --without=mysql
fi
popd

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_print_info "Upgrading logrotate configuration..."

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

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

# if /var/log/$app/production.log is a symbolic link, then move it to $final_path/log/production.log
if [ ! -L "/var/log/$app/production.log" ]
then
	mv "/var/log/$app/production.log" "$final_path/log/production.log"
	chown -R $app: "$final_path/log/production.log"
fi

yunohost service add $app --log "$final_path/log/production.log"

#=================================================
# RESTART LUFI
#=================================================

ln -sf "$final_path/log/production.log" "/var/log/$app/production.log"
ynh_systemd_action -n $app -a restart -l "Creating process id file" -p "$final_path/log/production.log"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info "Upgrading SSOwat configuration..."

ynh_app_setting_set $app unprotected_uris "/"
if [ $is_public -eq 0 ]
then
	if [ "$path_url" == "/" ]; then
	    # If the path is /, clear it to prevent any error with the regex.
	    path_url=""
	fi
	# Modify the domain to be used in a regex
	domain_regex=$(echo "$domain" | sed 's@-@.@g')
	ynh_app_setting_set $app protected_regex "$domain_regex$path_url/stats$","$domain_regex$path_url/manifest.webapp$","$domain_regex$path_url/$","$domain_regex$path_url/d/.*$","$domain_regex$path_url/m/.*$"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info "Reloading nginx web server..."

systemctl reload nginx
yunohost app ssowatconf

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

ynh_print_info "Upgrade of $app completed"