/*
 * Copyright 2017 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 <XCTest/XCTest.h>

#import "FIRAuthErrors.h"
#import "FIRAuthBackend.h"
#import "FIRGetOOBConfirmationCodeRequest.h"
#import "FIRGetOOBConfirmationCodeResponse.h"
#import "FIRFakeBackendRPCIssuer.h"

/** @var kTestAPIKey
    @brief Fake API key used for testing.
 */
static NSString *const kTestAPIKey = @"APIKey";

/** @var kExpectedAPIURL
    @brief The expected URL for the test calls.
 */
static NSString *const kExpectedAPIURL =
    @"https://www.googleapis.com/identitytoolkit/v3/relyingparty/getOobConfirmationCode?key=APIKey";

/** @var kRequestTypeKey
    @brief The name of the required "requestType" property in the request.
 */
static NSString *const kRequestTypeKey = @"requestType";

/** @var kPasswordResetRequestTypeValue
    @brief The value for the "PASSWORD_RESET" request type.
 */
static NSString *const kPasswordResetRequestTypeValue = @"PASSWORD_RESET";

/** @var kVerifyEmailRequestTypeValue
    @brief The value for the "VERIFY_EMAIL" request type.
 */
static NSString *const kVerifyEmailRequestTypeValue = @"VERIFY_EMAIL";

/** @var kEmailKey
    @brief The name of the "email" property in the request.
 */
static NSString *const kEmailKey = @"email";

/** @var kTestEmail
    @brief Testing user email adadress.
 */
static NSString *const kTestEmail = @"test@gmail.com";

/** @var kAccessTokenKey
    @brief The name of the "accessToken" property in the request.
 */
static NSString *const kAccessTokenKey = @"idToken";

/** @var kTestAccessToken
    @brief Testing access token.
 */
static NSString *const kTestAccessToken = @"ACCESS_TOKEN";

/** @class FIRGetOOBConfirmationCodeRequestTests
    @brief Tests for @c FIRGetOOBConfirmationCodeRequest.
 */
@interface FIRGetOOBConfirmationCodeRequestTests : XCTestCase
@end
@implementation FIRGetOOBConfirmationCodeRequestTests {
  /** @var _RPCIssuer
      @brief This backend RPC issuer is used to fake network responses for each test in the suite.
          In the @c setUp method we initialize this and set @c FIRAuthBackend's RPC issuer to it.
   */
  FIRFakeBackendRPCIssuer *_RPCIssuer;
}

- (void)setUp {
  [super setUp];
  FIRFakeBackendRPCIssuer *RPCIssuer = [[FIRFakeBackendRPCIssuer alloc] init];
  [FIRAuthBackend setDefaultBackendImplementationWithRPCIssuer:RPCIssuer];
  _RPCIssuer = RPCIssuer;
}

- (void)tearDown {
  _RPCIssuer = nil;
  [FIRAuthBackend setDefaultBackendImplementationWithRPCIssuer:nil];
  [super tearDown];
}

/** @fn testPasswordResetRequest
    @brief Tests the encoding of a password reset request.
 */
- (void)testPasswordResetRequest {
  FIRGetOOBConfirmationCodeRequest *request =
      [FIRGetOOBConfirmationCodeRequest passwordResetRequestWithEmail:kTestEmail
                                                               APIKey:kTestAPIKey];

  __block BOOL callbackInvoked;
  __block FIRGetOOBConfirmationCodeResponse *RPCResponse;
  __block NSError *RPCError;
  [FIRAuthBackend getOOBConfirmationCode:request
                                callback:^(FIRGetOOBConfirmationCodeResponse *_Nullable response,
                                           NSError *_Nullable error) {
    callbackInvoked = YES;
    RPCResponse = response;
    RPCError = error;
  }];

  XCTAssertEqualObjects(_RPCIssuer.requestURL.absoluteString, kExpectedAPIURL);
  XCTAssertNotNil(_RPCIssuer.decodedRequest);
  XCTAssert([_RPCIssuer.decodedRequest isKindOfClass:[NSDictionary class]]);
  XCTAssertEqualObjects(_RPCIssuer.decodedRequest[kEmailKey], kTestEmail);
  XCTAssertEqualObjects(_RPCIssuer.decodedRequest[kRequestTypeKey], kPasswordResetRequestTypeValue);
}

/** @fn testEmailVerificationRequest
    @brief Tests the encoding of an email verification request.
 */
- (void)testEmailVerificationRequest {
  FIRGetOOBConfirmationCodeRequest *request =
      [FIRGetOOBConfirmationCodeRequest verifyEmailRequestWithAccessToken:kTestAccessToken
                                                                   APIKey:kTestAPIKey];

  __block BOOL callbackInvoked;
  __block FIRGetOOBConfirmationCodeResponse *RPCResponse;
  __block NSError *RPCError;
  [FIRAuthBackend getOOBConfirmationCode:request
                                callback:^(FIRGetOOBConfirmationCodeResponse *_Nullable response,
                                           NSError *_Nullable error) {
    callbackInvoked = YES;
    RPCResponse = response;
    RPCError = error;
  }];

  XCTAssertEqualObjects(_RPCIssuer.requestURL.absoluteString, kExpectedAPIURL);
  XCTAssertNotNil(_RPCIssuer.decodedRequest);
  XCTAssert([_RPCIssuer.decodedRequest isKindOfClass:[NSDictionary class]]);
  XCTAssertEqualObjects(_RPCIssuer.decodedRequest[kAccessTokenKey], kTestAccessToken);
  XCTAssertEqualObjects(_RPCIssuer.decodedRequest[kRequestTypeKey], kVerifyEmailRequestTypeValue);
}

@end
