# Verify that the requested reverse proxy destination is valid:
#   - protocol is http(s):// or unix: for socket file
#   - plaintext http is only allowed to localhost (to avoid leaking credentials on the network)
#   - http(s) destination is webroot, no additional component allowed (eg. http://localhost:1234/test is invalid)
rp_validate_proxy_path() {
    proxy_path="$1"

    if [[ ! $proxy_path =~ '^unix:/' ]]; then
        url_regex='^(http://(127\.[0-9]+\.[0-9]+\.[0-9]+|localhost)|https://.*)(:[0-9]+)?(/.*)?$'
        [[ ! $proxy_path =~ $url_regex ]] && ynh_die \
        "For secure reason, you can't use an unencrypted http remote destination couple with ssowat for your reverse proxy: $proxy_path" 1
    fi

    # Don't allow trailing slash or additional URI components in proxy_path
    if [[ "$proxy_path" =~ ^https?:// ]]; then
        res="${proxy_path//[^\/]}"
        if [[ "${#res}" != "2" ]]; then
            if [[ "${#res}" = "3" ]] && [[ "$proxy_path" =~ /$ ]]; then
                # If it's only one trailing slash (no more components), just remove it
                proxy_path="${proxy_path::-1}"
            else
                ynh_die "Reverse proxy URL cannot contain additional slashes or components: $proxy_path" 1
            fi
        fi
    fi
}

# Make reverse proxy public if $1 is 1
# Yunohost boolean params are 1 if true
rp_make_permissions() {
    #ynh_script_progression --message="Configuring permissions..." --weight=2

    if [ $1 = 1 ]; then
        ynh_permission_update --permission="main" --add="visitors"
    fi
}

# (re)generate nginx config
rp_make_webconfig() {
    #ynh_script_progression --message="Configuring NGINX web server..." --weight=1

    # Nginx configuration
    ynh_replace_string "YNH_LOCATION" "$path_url" ../conf/nginx.conf
    ynh_replace_string "YNH_PROXY_PATH" "$proxy_path" ../conf/nginx.conf
    ynh_replace_string "YNH_APPNAME" "$app" ../conf/nginx.conf
    ynh_replace_string "YNH_ASSETS_PATH" "$assets_path" ../conf/nginx.conf
    cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/$app.conf
}

rp_reload_web() {
    #ynh_script_progression --message="Reloading NGINX web server..." --weight=1
    ynh_systemd_action --service_name=nginx --action=reload
}