/**
 * Copyright 2020, Optimizely
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { ProjectConfig } from '../project_config';
import { LogHandler } from '@optimizely/js-sdk-logging';
import { EventTags, UserAttributes, Event as EventLoggingEndpoint } from '../../shared_types';

interface ImpressionOptions {
  attributes?: UserAttributes;
  clientEngine: string;
  clientVersion: string;
  configObj: ProjectConfig;
  experimentId: string | null;
  ruleKey: string;
  flagKey: string;
  ruleType: string;
  eventKey?: string;
  variationId: string | null;
  logger?: LogHandler;
  userId: string;
}

interface ConversionEventOptions {
  attributes?: UserAttributes;
  clientEngine: string;
  clientVersion: string;
  configObj: ProjectConfig;
  eventKey: string;
  logger: LogHandler;
  userId: string;
  eventTags?: EventTags;
}

/**
 * Create impression event params to be sent to the logging endpoint
 * @param  {ImpressionOptions} options Object containing values needed to build impression event
 * @return {EventLoggingEndpoint} Params to be used in impression event logging endpoint call
 */
export function getImpressionEvent(options: ImpressionOptions): EventLoggingEndpoint;

/**
 * Create conversion event params to be sent to the logging endpoint
 * @param  {ConversionEventOptions} options  Object containing values needed to build conversion event
 * @return {EventLoggingEndpoint} Params to be used in conversion event logging endpoint call
 */
export function getConversionEvent(options: ConversionEventOptions): EventLoggingEndpoint;