#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
use_ldap=$(ynh_app_setting_get --app=$app --key=use_ldap)
port=$(ynh_app_setting_get --app=$app --key=port)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
secret=$(ynh_app_setting_get --app=$app --key=secret)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
max_file_size=$(ynh_app_setting_get --app=$app --key=max_file_size)

#=================================================
# 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)..."

# 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

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

# 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

if [ -z "$max_file_size" ]; then
	max_file_size=100 # 100 Mo
	ynh_app_setting_set --app=$app --key=max_file_size --value=$max_file_size
fi

# Check if is_public settings exist and is set to true
was_public=$(ynh_app_setting_get --app=$app --key=is_public)
if [ $was_public -eq 1 ]
then
	# Fix permissions if true
	ynh_print_info --message="Upgrading from legacy permission..."
	ynh_print_info --message="Legacy public instance detected, allow visitors with new permission."
	use_ldap=0

	# Add new permission to allow visitors
	ynh_permission_update --permission="main" --add="visitors"

	# Remove deprecated is_public settings
	ynh_app_setting_delete --app=$app --key=is_public
fi

# Check if legacy permissions exists (meanning that is_public was set to false)
if ynh_legacy_permissions_exists; then

	ynh_print_info --message="Upgrading from legacy permission..."
	ynh_print_info --message="Legacy private instance detected, keep LDAP enabled."

	# Legacy private install have LDAP enabled
	use_ldap=1

	# Cleaning legacy permissions
	ynh_print_info --message="Removing legacy permission..."
	ynh_legacy_permissions_delete_all

	# Remove deprecated is_public settings
	ynh_app_setting_delete --app=$app --key=is_public
fi

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

ynh_systemd_action --service_name=$app --action=stop --log_path="$final_path/log/production.log"

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

# 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..."

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

# Create a dedicated nginx config
ynh_add_nginx_config max_file_size

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

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

#=================================================
# SETUP LUFI
#=================================================
ynh_script_progression --message="Configuring Lufi..."

ldap="#"
if [ $use_ldap -eq 1 ];
then
	ldap=""
fi

max_size_set=""
if [ $max_file_size -eq 0 ]; then # Comment the limitation line if no limit
	max_size_set="#"
fi

ynh_add_config --template="../conf/lufi.conf.template" --destination="$final_path/lufi.conf"

chmod 600 $final_path/lufi.conf
chown $app:$app $final_path/lufi.conf

#=================================================
# BUILD LUFI
#=================================================
ynh_script_progression --message="Building Lufi..."

pushd $final_path
	carton install --deployment --without=sqlite --without=mysql --without=htpasswd --without=test
popd

#=================================================
# SETUP CRON
#=================================================
ynh_script_progression --message="Setuping cron..."

ynh_add_config --template="../conf/cron_lufi" --destination="/etc/cron.d/$app"
chmod +x $final_path/script/lufi

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================
ynh_script_progression --message="Storing the config file checksum..."

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

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

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

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

# Create a dedicated systemd config
ynh_add_systemd_config

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

ynh_systemd_action --service_name=$app --action="restart" --log_path="$final_path/log/production.log" --line_match="Creating process id file"

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

ynh_systemd_action --service_name=nginx --action=reload

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

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