Thumbtack's Crashlytics Adapter

CrashlyticsAdapter.h

#import <Foundation/Foundation.h>

/* How To Enable CrashlyticsAdapter
 *
 * # On the App Target
 *
 * Initialize Crashlytics as usual and pass the real Crashlytics instance to the adapter:
 *
 *     [Fabric with:@[[Crashlytics class]]];
 *     [CrashlyticsAdapter with:[Crashlytics sharedInstance]];
 *
 * # On Libraries That Need Crashlytics
 *
 * Just use `[CrashlyticsAdapter sharedInstance]` instead of `CrashlyticsKit` or `[Crashlytics sharedInstance]`.
 *
 */

@protocol CrashlyticsAPI

- (void)setUserIdentifier:(NSString *)identifier;

- (void)setObjectValue:(NSObject *)value forKey:(NSString *)key;

- (void)recordError:(NSError *)error;
- (void)recordError:(NSError *)error withAdditionalUserInfo:(NSDictionary<NSString *, NSObject *> *)userInfo;

@end

@interface CrashlyticsAdapter : NSObject <CrashlyticsAPI>

+ (instancetype)sharedInstance;

+ (void)with:(id<CrashlyticsAPI>)crashlytics;

- (instancetype)init NS_UNAVAILABLE;

@end

CrashlyticsAdapter.m

#import "CrashlyticsAdapter.h"

@interface CrashlyticsAdapter ()

@property (nonatomic, strong) id<CrashlyticsAPI> crashlytics;

@end

@implementation CrashlyticsAdapter

static CrashlyticsAdapter *sharedInstance;

+ (instancetype)sharedInstance {
    return sharedInstance;
}

+ (void)with:(id<CrashlyticsAPI>)crashlytics {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedInstance = [[CrashlyticsAdapter alloc] initWithCrashlytics:crashlytics];
    });
}

- (instancetype)initWithCrashlytics:(id<CrashlyticsAPI>)crashlytics {
    self = [super init];
    if (self) {
        self.crashlytics = crashlytics;
    }
    return self;
}


#pragma mark - Crashlytics API Delegation

- (void)setUserIdentifier:(NSString *)identifier {
    [self.crashlytics setUserIdentifier:identifier];
}

- (void)setObjectValue:(NSObject *)value forKey:(NSString *)key {
    [self.crashlytics setObjectValue:value forKey:key];
}

- (void)recordError:(NSError *)error {
    [self.crashlytics recordError:error];
}

- (void)recordError:(NSError *)error withAdditionalUserInfo:(NSDictionary<NSString *, NSObject *> *)userInfo {
    [self.crashlytics recordError:error withAdditionalUserInfo:userInfo];
}

@end