/*
 * This is the source code of Telegram for iOS v. 1.1
 * It is licensed under GNU GPL v. 2 or later.
 * You should have received a copy of the license in this archive (see LICENSE).
 *
 * Copyright Peter Iakovlev, 2013.
 */

#import "TGUpdateConfigActor.h"

#import "ActionStage.h"

#import "TGTelegraph.h"

#import <MTProtoKit/MTRequest.h>
#import "TGTelegramNetworking.h"

#import "TGUserDataRequestBuilder.h"

#import "TGApplicationFeatures.h"
#import "TGApplicationFeatureDescription.h"

#import "TGTimer.h"

#import "TGTelegramNetworking.h"

static NSTimeInterval configInvalidationDate = 0.0;

@interface TGUpdateConfigActor () <ASWatcher>
{
    bool _inviteReceived;
    bool _configReceived;
    bool _userReceived;
    
    TGTimer *_timer;
}

@property (nonatomic, strong) ASHandle *actionHandle;

@end

@implementation TGUpdateConfigActor

+ (NSString *)genericPath
{
    return @"/tg/service/updateConfig/@";
}

- (instancetype)initWithPath:(NSString *)path
{
    self = [super initWithPath:path];
    if (self != nil)
    {
        _actionHandle = [[ASHandle alloc] initWithDelegate:self];
    }
    return self;
}

- (void)dealloc
{
    [_actionHandle reset];
    [ActionStageInstance() removeWatcher:self];
}

- (void)execute:(NSDictionary *)__unused options
{
    if ([self.path hasSuffix:@"(background)"])
    {
        [self _updateBackgroundActor];
    }
    else
    {
        [self addCancelToken:[TGTelegraphInstance doRequestInviteText:self]];
        
        {
            MTRequest *request = [[MTRequest alloc] init];
            request.dependsOnPasswordEntry = false;
            request.body = [[TLRPChelp_getConfig$help_getConfig alloc] init];
            
            __weak TGUpdateConfigActor *weakSelf = self;
            [request setCompleted:^(TLConfig *result, __unused NSTimeInterval timestamp, id error)
            {
                [ActionStageInstance() dispatchOnStageQueue:^
                {
                    __strong TGUpdateConfigActor *strongSelf = weakSelf;
                    if (error == nil)
                        [strongSelf configRequestSuccess:result];
                    else
                        [strongSelf configRequestFailed];
                }];
            }];
            
            [self addCancelToken:request.internalId];
            [[TGTelegramNetworking instance] addRequest:request];
        }
        {
            MTRequest *request = [[MTRequest alloc] init];
            
            TLRPCusers_getUsers$users_getUsers *getUsers = [[TLRPCusers_getUsers$users_getUsers alloc] init];
            
            getUsers.n_id = @[[[TLInputUser$inputUserSelf alloc] init]];
            request.body = getUsers;
            
            __weak TGUpdateConfigActor *weakSelf = self;
            [request setCompleted:^(id result, __unused NSTimeInterval timestamp, id error)
            {
                [ActionStageInstance() dispatchOnStageQueue:^
                {
                    __strong TGUpdateConfigActor *strongSelf = weakSelf;
                    if (error == nil)
                        [strongSelf getUsersSuccess:result];
                    else
                        [strongSelf getUsersFailed];
                }];
            }];
            
            [self addCancelToken:request.internalId];
            [[TGTelegramNetworking instance] addRequest:request];
        }
    }
}

- (void)_updateBackgroundActor
{
    [_timer invalidate];
    _timer = nil;
    
    [ActionStageInstance() removeWatcher:self];
    
    [ActionStageInstance() requestActor:@"/tg/service/updateConfig/(task)" options:nil flags:0 watcher:self];
}

- (void)_maybeComplete
{
    if (_inviteReceived && _configReceived && _userReceived)
        [ActionStageInstance() actionCompleted:self.path result:nil];
}

- (void)inviteTextRequestSuccess:(TLhelp_InviteText *)inviteText
{
    TGDispatchOnMainThread(^
    {
        if (inviteText.message.length != 0)
        {
            [[NSUserDefaults standardUserDefaults] setObject:inviteText.message forKey:@"TG_inviteText"];
            [[NSUserDefaults standardUserDefaults] synchronize];
        }
    });
    
    _inviteReceived = true;
    [self _maybeComplete];
}

- (void)inviteTextRequestFailed
{
    _inviteReceived = true;
    [self _maybeComplete];
}

- (void)configRequestSuccess:(TLConfig *)config
{
    int32_t maxChatParticipants = MAX(100, config.chat_size_max);
    int32_t maxBroadcastReceivers = MAX(100, config.broadcast_size_max);
    [TGDatabaseInstance() setCustomProperty:@"maxChatParticipants" value:[NSData dataWithBytes:&maxChatParticipants length:4]];
    [TGDatabaseInstance() setCustomProperty:@"maxBroadcastReceivers" value:[NSData dataWithBytes:&maxBroadcastReceivers length:4]];
    
    //[TGApplicationFeatures setLargeGroupMemberCountLimit:(NSUInteger)config.chat_big_size];
    
    /*NSMutableArray *features = [[NSMutableArray alloc] init];
    for (TLDisabledFeature *disabledFeature in config.disabled_features)
    {
        TGApplicationFeatureDescription *feature = [[TGApplicationFeatureDescription alloc] initWithIdentifier:disabledFeature.feature enabled:false disabledMessage:disabledFeature.n_description];
        [features addObject:feature];
    }
    
    [TGApplicationFeatures rawUpdate:features];
    
    configInvalidationDate = config.expires;*/
 
    _configReceived = true;
    [self _maybeComplete];
}

- (void)configRequestFailed
{
    _configReceived = true;
    [self _maybeComplete];
}

- (void)getUsersSuccess:(NSArray *)users
{
    [TGUserDataRequestBuilder executeUserDataUpdate:users];
    
    _userReceived = true;
    [self _maybeComplete];
}

- (void)getUsersFailed
{
    _userReceived = true;
    [self _maybeComplete];
}

- (void)actorCompleted:(int)__unused status path:(NSString *)__unused path result:(id)__unused result
{
    [_timer invalidate];
    
    NSTimeInterval timeout = MAX(60.0, configInvalidationDate - [[TGTelegramNetworking instance] approximateRemoteTime])
    ;
    __weak TGUpdateConfigActor *weakSelf = self;
    _timer = [[TGTimer alloc] initWithTimeout:timeout repeat:false completion:^
    {
        __strong TGUpdateConfigActor *strongSelf = weakSelf;
        [strongSelf _updateBackgroundActor];
    } queue:[ActionStageInstance() globalStageDispatchQueue]];
    [_timer start];
}

@end