react-native-firebase/ios/RNFirebase/config/RNFirebaseRemoteConfig.m

#import "RNFirebaseRemoteConfig.h"

#if __has_include(<FirebaseRemoteConfig/FirebaseRemoteConfig.h>)
#import "FirebaseRemoteConfig/FirebaseRemoteConfig.h"
#import <React/RCTConvert.h>

NSString *convertFIRRemoteConfigFetchStatusToNSString(FIRRemoteConfigFetchStatus value)
{
    switch(value){
        case FIRRemoteConfigFetchStatusNoFetchYet:
            return @"config/no_fetch_yet";
        case FIRRemoteConfigFetchStatusFailure:
            return @"config/failure";
        case FIRRemoteConfigFetchStatusThrottled:
            return @"config/throttled";
        default:
            return @"config/failure";
    }
}

NSString *convertFIRRemoteConfigSourceToNSString(FIRRemoteConfigSource value)
{
    switch(value) {
        case FIRRemoteConfigSourceDefault:
            return @"default";
        case FIRRemoteConfigSourceRemote:
            return @"remote";
        default:
            return @"static";
    }
}

NSDictionary *convertFIRRemoteConfigValueToNSDictionary(FIRRemoteConfigValue *value)
{
    return @{
             @"stringValue" : value.stringValue ?: [NSNull null],
             @"numberValue" : value.numberValue ?: [NSNull null],
             @"dataValue" : value.dataValue ? [value.dataValue base64EncodedStringWithOptions:0] : [NSNull null],
             @"boolValue" : @(value.boolValue),
             @"source" : convertFIRRemoteConfigSourceToNSString(value.source)
             };
}

@interface RNFirebaseRemoteConfig ()

@property (nonatomic, readwrite, weak) FIRRemoteConfig *remoteConfig;

@end

@implementation RNFirebaseRemoteConfig

RCT_EXPORT_MODULE(RNFirebaseRemoteConfig);

RCT_EXPORT_METHOD(enableDeveloperMode) {
    FIRRemoteConfigSettings *remoteConfigSettings = [[FIRRemoteConfigSettings alloc] initWithDeveloperModeEnabled:YES];
    [FIRRemoteConfig remoteConfig].configSettings = remoteConfigSettings;
}

RCT_EXPORT_METHOD(fetch:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject) {
    [[FIRRemoteConfig remoteConfig] fetchWithCompletionHandler:^(FIRRemoteConfigFetchStatus status, NSError *__nullable error) {
        if (error) {
            RCTLogError(@"\nError: %@", RCTJSErrorFromNSError(error));
            reject(convertFIRRemoteConfigFetchStatusToNSString(status), error.localizedDescription, error);
        } else {
            resolve(convertFIRRemoteConfigFetchStatusToNSString(status));
        }
    }];
}

RCT_EXPORT_METHOD(fetchWithExpirationDuration:(nonnull NSNumber *)expirationDuration
                  resolver:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject)
{
    [[FIRRemoteConfig remoteConfig] fetchWithExpirationDuration:expirationDuration.doubleValue completionHandler:^(FIRRemoteConfigFetchStatus status, NSError *__nullable error) {
        if (error) {
            RCTLogError(@"\nError: %@", RCTJSErrorFromNSError(error));
            reject(convertFIRRemoteConfigFetchStatusToNSString(status), error.localizedDescription, error);
        } else {
            resolve(convertFIRRemoteConfigFetchStatusToNSString(status));
        }
    }];
}

RCT_EXPORT_METHOD(activateFetched:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject)
{
    BOOL status = [[FIRRemoteConfig remoteConfig] activateFetched];
    resolve(@(status));
}

RCT_EXPORT_METHOD(getValue:(NSString *)key
                  resolver:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject)
{
    FIRRemoteConfigValue *value = [[FIRRemoteConfig remoteConfig] configValueForKey:key];
    resolve(convertFIRRemoteConfigValueToNSDictionary(value));
}

RCT_EXPORT_METHOD(getValues:(NSArray *)keys
                  resolver:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject)
{
    NSMutableArray *valuesArray = [[NSMutableArray alloc] init];
    for (NSString *key in keys) {
      FIRRemoteConfigValue *value = [[FIRRemoteConfig remoteConfig] configValueForKey:key];
        [valuesArray addObject:convertFIRRemoteConfigValueToNSDictionary(value)];
    }
    resolve(valuesArray);
}

RCT_EXPORT_METHOD(getKeysByPrefix:(NSString *)prefix
                  resolver:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject)
{
    NSSet *keys = [[FIRRemoteConfig remoteConfig] keysWithPrefix:prefix];
    NSMutableArray *keysArray = [[NSMutableArray alloc] init];
    for (NSString *key in keys) {
        [keysArray addObject:key];
    }
    resolve(keysArray);
}

RCT_EXPORT_METHOD(setDefaults:(NSDictionary *)defaults) {
    [[FIRRemoteConfig remoteConfig] setDefaults:defaults];
}

RCT_EXPORT_METHOD(setDefaultsFromResource:(NSString *)fileName) {
    [[FIRRemoteConfig remoteConfig] setDefaultsFromPlistFileName:fileName];
}

@end

#else
@implementation RNFirebaseRemoteConfig
@end
#endif