/**
 * Set timeout for requests and notify $rootScope when it is triggered
 */
TimeoutInterceptor.$inject = ['$timeout', '$q', '$rootScope', 'request'];
function TimeoutInterceptor($timeout, $q, $rootScope, request) {
    var TIMEOUT = 3000,
        TIMEOUT_MAX = 60000,
        STATUS = {
            OK: 0,
        };

    var IS_VIEW_REGEXP = /\.html?$/;

    $rootScope.serverStatus = STATUS.OK;

    return {

        // set timeout for every request but upload
        xrequest: function(config) {
            if (!IS_VIEW_REGEXP.test(config.url) && !request.isUpload(config)) {
                config._ttl = config._ttl ? Math.min(TIMEOUT_MAX, config._ttl * 2) : TIMEOUT;
                config.timeout = $timeout(() => {
                    config._isTimeout = true;
                }, config._ttl);
            }

            return config;
        },

        // reset server status on success
        xresponse: function(response) {
            if (response.config.timeout) {
                $timeout.cancel(response.config.timeout);
                $rootScope.serverStatus = STATUS.OK;
            }

            return response;
        },

        // repeat request with higher timeout
        xresponseError: function(rejection) {
            if (!rejection.status && !request.isUpload(rejection.config)) {
                $rootScope.serverStatus += 1;
                return request.resend(rejection.config);
            }

            $timeout.cancel(rejection.config.timeout);
            $rootScope.serverStatus = STATUS.OK;
            return $q.reject(rejection);
        },
    };
}

angular.module('superdesk.core.api.timeout', []).factory('timeoutInterceptor', TimeoutInterceptor);