Renamed AppCheck to AppCheckCore (#11581)

Renamed the App Check (Lite) SDK to App Check Core.

AppCheckCore/Sources/DebugProvider/API/GACAppCheckDebugProviderAPIService.m

@@ -0,0 +1,111 @@
+/*
+ * 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 "AppCheckCore/Sources/DebugProvider/API/GACAppCheckDebugProviderAPIService.h"
+
+#if __has_include(<FBLPromises/FBLPromises.h>)
+#import <FBLPromises/FBLPromises.h>
+#else
+#import "FBLPromises.h"
+#endif
+
+#import <GoogleUtilities/GULURLSessionDataResponse.h>
+#import <GoogleUtilities/NSURLSession+GULPromises.h>
+
+#import "AppCheckCore/Sources/Core/APIService/GACAppCheckAPIService.h"
+#import "AppCheckCore/Sources/Core/APIService/GACAppCheckToken+APIResponse.h"
+
+#import "AppCheckCore/Sources/Core/Errors/GACAppCheckErrorUtil.h"
+#import "AppCheckCore/Sources/Core/GACAppCheckLogger+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSString *const kContentTypeKey = @"Content-Type";
+static NSString *const kJSONContentType = @"application/json";
+static NSString *const kDebugTokenField = @"debug_token";
+
+@interface GACAppCheckDebugProviderAPIService ()
+
+@property(nonatomic, readonly) id<GACAppCheckAPIServiceProtocol> APIService;
+
+@property(nonatomic, readonly) NSString *resourceName;
+
+@end
+
+@implementation GACAppCheckDebugProviderAPIService
+
+- (instancetype)initWithAPIService:(id<GACAppCheckAPIServiceProtocol>)APIService
+                      resourceName:(NSString *)resourceName {
+  self = [super init];
+  if (self) {
+    _APIService = APIService;
+    _resourceName = resourceName;
+  }
+  return self;
+}
+
+#pragma mark - Public API
+
+- (FBLPromise<GACAppCheckToken *> *)appCheckTokenWithDebugToken:(NSString *)debugToken {
+  NSString *URLString = [NSString
+      stringWithFormat:@"%@/%@:exchangeDebugToken", self.APIService.baseURL, self.resourceName];
+  NSURL *URL = [NSURL URLWithString:URLString];
+
+  return [self HTTPBodyWithDebugToken:debugToken]
+      .then(^FBLPromise<GULURLSessionDataResponse *> *(NSData *HTTPBody) {
+        return [self.APIService sendRequestWithURL:URL
+                                        HTTPMethod:@"POST"
+                                              body:HTTPBody
+                                 additionalHeaders:@{kContentTypeKey : kJSONContentType}];
+      })
+      .then(^id _Nullable(GULURLSessionDataResponse *_Nullable response) {
+        return [self.APIService appCheckTokenWithAPIResponse:response];
+      });
+}
+
+#pragma mark - Helpers
+
+- (FBLPromise<NSData *> *)HTTPBodyWithDebugToken:(NSString *)debugToken {
+  if (debugToken.length <= 0) {
+    FBLPromise *rejectedPromise = [FBLPromise pendingPromise];
+    [rejectedPromise
+        reject:[GACAppCheckErrorUtil errorWithFailureReason:@"Debug token must not be empty."]];
+    return rejectedPromise;
+  }
+
+  return [FBLPromise onQueue:[self backgroundQueue]
+                          do:^id _Nullable {
+                            NSError *encodingError;
+                            NSData *payloadJSON = [NSJSONSerialization
+                                dataWithJSONObject:@{kDebugTokenField : debugToken}
+                                           options:0
+                                             error:&encodingError];
+
+                            if (payloadJSON != nil) {
+                              return payloadJSON;
+                            } else {
+                              return [GACAppCheckErrorUtil JSONSerializationError:encodingError];
+                            }
+                          }];
+}
+
+- (dispatch_queue_t)backgroundQueue {
+  return dispatch_get_global_queue(QOS_CLASS_UTILITY, 0);
+}
+
+@end
+
+NS_ASSUME_NONNULL_END