#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

old_domain=$YNH_APP_OLD_DOMAIN
old_path=$YNH_APP_OLD_PATH

new_domain=$YNH_APP_NEW_DOMAIN
new_path=$YNH_APP_NEW_PATH

app=$YNH_APP_INSTANCE_NAME

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

# Needed for helper "ynh_add_nginx_config"
final_path=$(ynh_app_setting_get --app=$app --key=final_path)

port_api_gateway=$(ynh_app_setting_get --app=$app --key=port_api_gateway)
port_auth=$(ynh_app_setting_get --app=$app --key=port_auth)
port_auth_worker=$(ynh_app_setting_get --app=$app --key=port_auth_worker)
port_files=$(ynh_app_setting_get --app=$app --key=port_files)
port_syncing_server=$(ynh_app_setting_get --app=$app --key=port_syncing_server)
port_syncing_server_worker=$(ynh_app_setting_get --app=$app --key=port_syncing_server_worker)

config_api_gateway="$final_path/live/api-gateway.env"

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before changing its url (may take a while)..." --weight=33

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
    # Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
    ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"

    # restore it if the upgrade fails
    ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# CHECK WHICH PARTS SHOULD BE CHANGED
#=================================================

change_domain=0
if [ "$old_domain" != "$new_domain" ]
then
    change_domain=1
fi

change_path=0
if [ "$old_path" != "$new_path" ]
then
    change_path=1
fi

#=================================================
# STANDARD MODIFICATIONS
#=================================================
#=================================================
# MODIFY URL IN NGINX CONF
#=================================================
ynh_script_progression --message="Updating nginx web server configuration..." --weight=2

nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
    # Make a backup of the original nginx config file if modified
    ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
    # Set global variables for nginx helper
    domain="$old_domain"
    path_url="$new_path"
    # Create a dedicated nginx config
    ynh_add_nginx_config
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
    # Delete file checksum for the old conf file location
    ynh_delete_file_checksum --file="$nginx_conf_path"
    mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
    # Store file checksum for the new config file location
    ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi

#=================================================
# SPECIFIC MODIFICATIONS
#=================================================
# MODIFY CONFIG
#=================================================
ynh_script_progression --message="Modify configuring..." --weight=1

ynh_replace_string --match_string="^FILES_SERVER_URL.*$" --replace_string="FILES_SERVER_URL=https://$new_domain$new_path/files" --target_file="$config_api_gateway"
ynh_store_file_checksum --file="$config_api_gateway"

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring fail2ban..." --weight=1

domain=$new_domain
path_url=$new_path
# Create a dedicated fail2ban config
touch "/var/log/$app/$app.log"
ynh_add_fail2ban_config --use_template

#=================================================
# GENERIC FINALISATION
#=================================================
#=================================================
# 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="Change of URL completed for $app" --last