Proyectos de Subversion Iphone Microlearning

/*

 * Copyright 2020 Google LLC

 *

 * 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 "FirebaseCore/Sources/FIRFirebaseUserAgent.h"

#import <GoogleUtilities/GULAppEnvironmentUtil.h>

@interface FIRFirebaseUserAgent ()

@property(nonatomic, readonly) NSMutableDictionary<NSString *, NSString *> *valuesByComponent;

@property(nonatomic, readonly) NSDictionary<NSString *, NSString *> *environmentComponents;

@property(nonatomic, readonly) NSString *firebaseUserAgent;

@end

@implementation FIRFirebaseUserAgent

@synthesize firebaseUserAgent = _firebaseUserAgent;

@synthesize environmentComponents = _environmentComponents;

- (instancetype)init {

  self = [super init];

  if (self) {

    _valuesByComponent = [[NSMutableDictionary alloc] init];

  }

  return self;

}

- (NSString *)firebaseUserAgent {

  @synchronized(self) {

    if (_firebaseUserAgent == nil) {

      NSMutableDictionary<NSString *, NSString *> *allComponents =

          [self.valuesByComponent mutableCopy];

      [allComponents setValuesForKeysWithDictionary:self.environmentComponents];

      __block NSMutableArray<NSString *> *components =

          [[NSMutableArray<NSString *> alloc] initWithCapacity:self.valuesByComponent.count];

      [allComponents enumerateKeysAndObjectsUsingBlock:^(

                         NSString *_Nonnull name, NSString *_Nonnull value, BOOL *_Nonnull stop) {

        [components addObject:[NSString stringWithFormat:@"%@/%@", name, value]];

      }];

      [components sortUsingSelector:@selector(localizedCaseInsensitiveCompare:)];

      _firebaseUserAgent = [components componentsJoinedByString:@" "];

    }

    return _firebaseUserAgent;

  }

}

- (void)setValue:(nullable NSString *)value forComponent:(NSString *)componentName {

  @synchronized(self) {

    self.valuesByComponent[componentName] = value;

    // Reset cached user agent string.

    _firebaseUserAgent = nil;

  }

}

- (void)reset {

  @synchronized(self) {

    // Reset components.

    _valuesByComponent = [[[self class] environmentComponents] mutableCopy];

    // Reset cached user agent string.

    _firebaseUserAgent = nil;

  }

}

#pragma mark - Environment components

- (NSDictionary<NSString *, NSString *> *)environmentComponents {

  if (_environmentComponents == nil) {

    _environmentComponents = [[self class] environmentComponents];

  }

  return _environmentComponents;

}

+ (NSDictionary<NSString *, NSString *> *)environmentComponents {

  NSMutableDictionary<NSString *, NSString *> *components = [NSMutableDictionary dictionary];

  NSDictionary<NSString *, id> *info = [[NSBundle mainBundle] infoDictionary];

  NSString *xcodeVersion = info[@"DTXcodeBuild"];

  NSString *appleSdkVersion = info[@"DTSDKBuild"];

  NSString *isFromAppstoreFlagValue = [GULAppEnvironmentUtil isFromAppStore] ? @"true" : @"false";

  components[@"apple-platform"] = [GULAppEnvironmentUtil applePlatform];

  components[@"apple-sdk"] = appleSdkVersion;

  components[@"appstore"] = isFromAppstoreFlagValue;

  components[@"deploy"] = [GULAppEnvironmentUtil deploymentType];

  components[@"device"] = [GULAppEnvironmentUtil deviceModel];

  components[@"os-version"] = [GULAppEnvironmentUtil systemVersion];

  components[@"xcode"] = xcodeVersion;

  return [components copy];

}

@end