// @flow

import uuid from 'uuid';

import { SET_BILLING_ID } from './actionTypes';
import { extractVpaasTenantFromPath, getBillingId, sendCountRequest } from './functions';

/**
 * Sends a billing count request when needed.
 * If there is no billingId, it presists one first and sends the request after.
 *
 * @returns {Function}
 */
export function countEndpoint() {
    return function(dispatch: Function, getState: Function) {
        const state = getState();
        const baseUrl = state['features/base/config'].billingCounterUrl;
        const jwt = state['features/base/jwt'].jwt;
        const tenant = extractVpaasTenantFromPath(state['features/base/connection'].locationURL.pathname);
        const shouldSendRequest = Boolean(baseUrl && jwt && tenant);

        if (shouldSendRequest) {
            let billingId = getBillingId();

            if (!billingId) {
                billingId = uuid.v4();
                dispatch(setBillingId(billingId));
            }

            sendCountRequest({
                baseUrl,
                billingId,
                jwt,
                tenant
            });
        }
    };
}

/**
 * Action used to set the user billing id.
 *
 * @param {string} value - The uid.
 * @returns {Object}
 */
function setBillingId(value) {
    return {
        type: SET_BILLING_ID,
        value
    };
}