//
//  BITAuthenticator_Private.h
//  HockeySDK
/*
 * Author: Stephan Diederich
 *
 * Copyright (c) 2013 HockeyApp, Bit Stadium GmbH.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */


#import "BITAuthenticator.h"
#import "BITHockeyBaseManagerPrivate.h"
#import "BITAuthenticationViewController.h"
@class BITHockeyAppClient;

@interface BITAuthenticator ()<BITAuthenticationViewControllerDelegate>

/**
 *	must be set
 */
@property (nonatomic, strong) BITHockeyAppClient *hockeyAppClient;

#pragma mark - Identification

/**
 *	Provides an identification for the current app installation
 *
 *  During Alpha and Beta-phase HockeyApp tries to uniquely identify each app installation
 *  to provide better error reporting & analytics. If authenticator is configured to login
 *  (@see BITAuthenticatorValidationType), this identifier is retrieved from HockeyApp. In case
 *  it is disabled, it returns the vendorIdentifier provided by UIKit.
 *  KVO'able
 *
 *	@return	a string identifying this app installation
 */
@property (nonatomic, readonly) NSString *installationIdentification;

/**
 *	Specifies if the installationIdentification has been validated
 *
 *  Depending on authenticationType and validationType this flag switches between
 *  YES/NO during application runtime. If it's YES, the installationIdentification has been
 *  validated (either against the backend on app launch / initial run of this version) or validation
 *  is not required. The flag is first updated (and stays NO) until the manager has been started.
 *  KVO'able
 */
@property (nonatomic, readwrite) BOOL installationIdentificationValidated;

/**
 *	Specifies the type of installation identification for the current app installation
 */
@property (nonatomic, readonly) NSString *installationIdentificationType;

#pragma mark -

//can be set for testing
@property (nonatomic) UIDevice *currentDevice;

#pragma mark -
/**
 *	if set, this serves as the installationIdentifier. 
 *  This is retrieved from the hockeyApp backend
 *  @see installationIdentifier
 */
@property (nonatomic, readonly) NSString *authenticationToken;

/**
 *  store the authentication token with the given type
 *  if authToken is not nil, authentikationTokenType must also be non nil
 */
- (void)setAuthenticationToken:(NSString *)authenticationToken withType:(NSString*) authenticationTokenType;

/**
 *  holds the identifier of the last version that was authenticated
 *  only used if validation is set BITAuthenticatorValidationTypeOnFirstLaunch
 */
@property (nonatomic, copy) NSString *lastAuthenticatedVersion;

@property (nonatomic, copy) tAuthenticationCompletion authenticationCompletionBlock;

/**
 *	removes all previously stored authentication tokens, UDIDs, etc
 */
- (void) cleanupInternalStorage;

/**
 * method registered as observer for applicationWillBecomeInactive events
 */
- (void) applicationWillResignActive:(NSNotification*) note;

/**
 * method registered as observer for applicationsDidBecomeActive events
 */
- (void) applicationDidBecomeActive:(NSNotification*) note;

/**
 *	once the user skipped the optional login, this is set to YES
 *  (and thus the optional login should never be shown again)
 *  persisted to disk. Defaults to NO
 */
@property (nonatomic, assign) BOOL didSkipOptionalLogin;

#pragma mark - Authentication
/**
 *	Authenticate this app installation
 *
 *  Depending on 'authenticationType', this tries to authenticate the app installation
 *  against the HockeyApp server.
 *  You should not need to call this, as it's done automatically once the manager has
 *  been started, depending on validationType.
 *
 *  @param completion if nil, success/failure is reported via the delegate, if not nil, the
 *         delegate methods are not called.
 */
- (void) authenticateWithCompletion:(tAuthenticationCompletion) completion;

#pragma mark - Internal Auth callbacks
- (void) didAuthenticateWithToken:(NSString*) token;

#pragma mark - Validation
/**
 *	Validate the app installation
 *
 *  Depending on @see validationType, this is called by the manager after the app becomes active
 *  and tries to revalidate the installation.
 *  You should not need to call this, as it's done automatically once the manager has
 *  been started, depending on validationType.
 *
 *  @param completion if nil, success/failure is reported via the delegate, if not nil, the
 *         delegate methods are not called
 */
- (void) validateInstallationWithCompletion:(tValidationCompletion) completion;


#pragma mark - Validation callbacks
- (void) validationSucceededWithCompletion:(tValidationCompletion) completion;
- (void) validationFailedWithError:(NSError *) validationError completion:(tValidationCompletion) completion;

#pragma mark - Helpers for testing
- (tValidationCompletion) defaultValidationCompletionBlock;
@end