/*
 Copyright 2015 OpenMarket Ltd
 Copyright 2017 Vector Creations Ltd
 
 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 <MatrixSDK/MatrixSDK.h>

typedef enum : NSUInteger {
    MXK3PIDAuthStateUnknown,
    MXK3PIDAuthStateTokenRequested,
    MXK3PIDAuthStateTokenReceived,
    MXK3PIDAuthStateTokenSubmitted,
    MXK3PIDAuthStateAuthenticated
} MXK3PIDAuthState;


@interface MXK3PID : NSObject

/**
 The type of the third party media.
 */
@property (nonatomic, readonly) MX3PIDMedium medium;

/**
 The third party media (email address, msisdn,...).
 */
@property (nonatomic, readonly) NSString *address;

/**
 The current client secret key used during third party validation.
 */
@property (nonatomic, readonly) NSString *clientSecret;

/**
 The current session identifier during third party validation.
 */
@property (nonatomic, readonly) NSString *sid;

/**
 The id of the user on Matrix.
 nil if unknown or not yet resolved.
 */
@property (nonatomic) NSString *userId;

@property (nonatomic, readonly) MXK3PIDAuthState validationState;

/**
 Initialise the instance with a 3PID.

 @param medium the medium.
 @param address the id of the contact on this medium.
 @return the new instance.
 */
- (instancetype)initWithMedium:(NSString*)medium andAddress:(NSString*)address;

/**
 Cancel the current request, and reset parameters
 */
- (void)cancelCurrentRequest;

/**
 Start the validation process 
 The identity server will send a validation token by email or sms.
 
 In case of email, the end user must click on the link in the received email
 to validate their email address in order to be able to call add3PIDToUser successfully.
 
 In case of phone number, the end user must send back the sms token
 in order to be able to call add3PIDToUser successfully.
 
 @param restClient used to make matrix API requests during validation process.
 @param isDuringRegistration  tell whether this request occurs during a registration flow.
 @param nextLink the link the validation page will automatically open. Can be nil.
 @param success A block object called when the operation succeeds.
 @param failure A block object called when the operation fails.
 */
- (void)requestValidationTokenWithMatrixRestClient:(MXRestClient*)restClient
                              isDuringRegistration:(BOOL)isDuringRegistration
                                          nextLink:(NSString*)nextLink
                                           success:(void (^)(void))success
                                           failure:(void (^)(NSError *error))failure;

/**
 Submit the received validation token.
 
 @param token the validation token.
 @param success A block object called when the operation succeeds.
 @param failure A block object called when the operation fails.
 */
- (void)submitValidationToken:(NSString *)token
                      success:(void (^)(void))success
                      failure:(void (^)(NSError *error))failure;

/**
 Link a 3rd party id to the user.
 
 @param bind whether the homeserver should also bind this third party identifier
        to the account's Matrix ID with the identity server.
 @param success A block object called when the operation succeeds. It provides the raw
 server response.
 @param failure A block object called when the operation fails.
 */
- (void)add3PIDToUser:(BOOL)bind
              success:(void (^)(void))success
              failure:(void (^)(NSError *error))failure;

@end