/*
 * Copyright 2019 Google
 *
 * 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 <Foundation/Foundation.h>

#define RCN_SEC_PER_MIN 60
#define RCN_MSEC_PER_SEC 1000

/// Key prefix applied to all the packages (bundle IDs) in internal metadata.
static NSString *const RCNInternalMetadataAllPackagesPrefix = @"all_packages";

/// HTTP connection default timeout in seconds.
static const NSTimeInterval RCNHTTPDefaultConnectionTimeout = 60;
/// Default duration of how long config data lasts to stay fresh.
static const NSTimeInterval RCNDefaultMinimumFetchInterval = 43200;

/// Label for serial queue for read/write lock on ivars.
static const char *RCNRemoteConfigQueueLabel = "com.google.GoogleConfigService.FIRRemoteConfig";

/// Constants for key names in the fetch response.
/// Key that includes an array of template entries.
static NSString *const RCNFetchResponseKeyEntries = @"entries";
/// Key that includes data for experiment descriptions in ABT.
static NSString *const RCNFetchResponseKeyExperimentDescriptions = @"experimentDescriptions";
/// Key that includes data for Personalization metadata.
static NSString *const RCNFetchResponseKeyPersonalizationMetadata = @"personalizationMetadata";
/// Error key.
static NSString *const RCNFetchResponseKeyError = @"error";
/// Error code.
static NSString *const RCNFetchResponseKeyErrorCode = @"code";
/// Error status.
static NSString *const RCNFetchResponseKeyErrorStatus = @"status";
/// Error message.
static NSString *const RCNFetchResponseKeyErrorMessage = @"message";
/// The current state of the backend template.
static NSString *const RCNFetchResponseKeyState = @"state";
/// Default state (when not set).
static NSString *const RCNFetchResponseKeyStateUnspecified = @"INSTANCE_STATE_UNSPECIFIED";
/// Config key/value map and/or ABT experiment list differs from last fetch.
/// TODO: Migrate to the new HTTP error codes once available in the backend. b/117182055
static NSString *const RCNFetchResponseKeyStateUpdate = @"UPDATE";
/// No template fetched.
static NSString *const RCNFetchResponseKeyStateNoTemplate = @"NO_TEMPLATE";
/// Config key/value map and ABT experiment list both match last fetch.
static NSString *const RCNFetchResponseKeyStateNoChange = @"NO_CHANGE";
/// Template found, but evaluates to empty (e.g. all keys omitted).
static NSString *const RCNFetchResponseKeyStateEmptyConfig = @"EMPTY_CONFIG";