//
//  ManagerMqtt.m
//  SoundRiver
//
//  Created by apple on 2020/3/19.
//

#import "QXManagerMqtt.h"

@interface QXManagerMqtt()<MQTTSessionManagerDelegate>
@property (nonatomic, strong)NSString *username;
@property (nonatomic, strong)NSString *password;
@property (nonatomic, strong)NSString *cliendId;

//订阅的topic
@property (nonatomic,strong) NSMutableDictionary *subedDict;

@property (nonatomic,assign) BOOL isSSL;

@end

@implementation QXManagerMqtt

+ (instancetype)sharedInstance {
    static dispatch_once_t onceToken;
    static QXManagerMqtt *sharedManager;
    dispatch_once(&onceToken, ^{
        sharedManager = [[QXManagerMqtt alloc] init];
    });
    return sharedManager;
}
#pragma mark - 绑定
- (void)bindWithUserName:(NSString *)username password:(NSString *)password cliendId:(NSString *)cliendId isSSL:(BOOL)isSSL{
    self.username = username;
    self.password = password;
    self.cliendId = cliendId;
    self.isSSL = isSSL;
    [self.mySessionManager connectTo:AddressOfMQTTServer
                                port:AddressOfMQTTPort
                                 tls:self.isSSL
                           keepalive:60
                               clean:YES
                                auth:YES
                                user:self.username
                                pass:self.password
                                will:NO
                           willTopic:nil
                             willMsg:nil
                             willQos:MQTTQosLevelAtMostOnce
                      willRetainFlag:NO
                        withClientId:self.cliendId
                      securityPolicy:[self customSecurityPolicy]
                        certificates:nil
                       protocolLevel:MQTTProtocolVersion311
                      connectHandler:^(NSError *error) {
        NSLog(@"mqtt connect - %@", error);
//        if (error == nil) {
//            [self subscribeTopic:@"qx_room_topic"];
//        }
    }];
    self.mySessionManager.subscriptions = self.subedDict;
}

- (MQTTSSLSecurityPolicy *)customSecurityPolicy
{
    MQTTSSLSecurityPolicy *securityPolicy = [MQTTSSLSecurityPolicy policyWithPinningMode:MQTTSSLPinningModeNone];
    
    securityPolicy.allowInvalidCertificates = YES;
    securityPolicy.validatesCertificateChain = YES;
    securityPolicy.validatesDomainName = NO;
    return securityPolicy;
}

#pragma mark ---- 状态

- (void)sessionManager:(MQTTSessionManager *)sessionManager didChangeState:(MQTTSessionManagerState)newState {
    switch (newState) {
        case MQTTSessionManagerStateConnected:
            QXLOG(@"eventCode -- 连接成功");
            [self subscribeTopic:@"qx_room_topic"];
            [self reConnectForStateError];
            
            break;
        case MQTTSessionManagerStateConnecting:
            QXLOG(@"eventCode -- 连接中");
            
            break;
        case MQTTSessionManagerStateClosed:
            QXLOG(@"eventCode -- 连接被关闭");
            break;
        case MQTTSessionManagerStateError:
            QXLOG(@"eventCode -- 连接错误");
            break;
        case MQTTSessionManagerStateClosing:
            QXLOG(@"eventCode -- 关闭中");
            
            break;
        case MQTTSessionManagerStateStarting:
            QXLOG(@"eventCode -- 连接开始");
            
            break;
            
        default:
            break;
    }
}
- (void)sessionManager:(MQTTSessionManager *)sessionManager didReceiveMessage:(NSData *)data onTopic:(NSString *)topic retained:(BOOL)retained{

    NSError *error;
    NSString *dataStr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
    dataStr = [dataStr stringByReplacingOccurrencesOfString:@"\\u" withString:@"u_u"];
    dataStr = [dataStr stringByReplacingOccurrencesOfString:@"\\U" withString:@"U_U"];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"\\" withString:@""];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"\\" withString:@""];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"\\" withString:@""];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"\\" withString:@""];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"\"\"{" withString:@"\"{"];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"}\"\"" withString:@"}\""];
    
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"\"{" withString:@"{"];
    dataStr=[dataStr stringByReplacingOccurrencesOfString:@"}\"" withString:@"}"];
    
    dataStr = [dataStr stringByReplacingOccurrencesOfString:@"U_U" withString:@"\\U"];
    dataStr = [dataStr stringByReplacingOccurrencesOfString:@"u_u" withString:@"\\u"];
    //dataStr = [self replaceUnicode:dataStr];
    if(dataStr != nil){
        
        QXLOG(@"收到消息%@",dataStr);
        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:[dataStr dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];
        QXLOG(@"收到消息%@",dict);
        if (dict != nil && self.delegate && [self.delegate respondsToSelector:@selector(socketManager:receivedMessage:topic:)]) {
            dispatch_async(dispatch_get_main_queue(), ^{
                [self.delegate socketManager:@"收到消息" receivedMessage:dict topic:topic];
            });
        }
    }
    
}

-(NSString *)replaceUnicode:(NSString *)unicodeStr {
          
    NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\\u" withString:@"\\U"];
//    NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];
//    NSString *tempStr3 = [[@"\"" stringByAppendingString:tempStr2] stringByAppendingString:@"\""];
    NSData *tempData = [tempStr1 dataUsingEncoding:NSUTF8StringEncoding];
    NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData
                            mutabilityOption:NSPropertyListImmutable
                            format:NULL
                            errorDescription:NULL];
//    NSString* returnStr = [[NSString alloc]initWithData:tempData encoding:NSUTF8StringEncoding];
      
    //NSLog(@"Output = %@", returnStr);
      
    return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n" withString:@"\n"];
}

#pragma mark - 订阅
//- (void)subscribeTopic:(NSString *)topic handler:(SubscribeTopicHandler)handler{
- (void)subscribeTopic:(NSString *)topic{

    QXLOG(@"当前需要订阅-------- topic = %@",topic);
    
    if (![self.subedDict.allKeys containsObject:topic]) {
        [self.subedDict setObject:[NSNumber numberWithLong:MQTTQosLevelAtLeastOnce] forKey:topic];
        QXLOG(@"订阅字典 ----------- = %@",self.subedDict);
        self.mySessionManager.subscriptions =  self.subedDict;
    }else {
        QXLOG(@"已经存在，不用订阅");
    }
}

#pragma mark - 取消订阅
- (void)unsubscribeTopic:(NSString *)topic {
       QXLOG(@"当前需要取消订阅-------- topic = %@",topic);
    if ([self.subedDict.allKeys containsObject:topic]) {
        [self.subedDict removeObjectForKey:topic];
        QXLOG(@"更新之后的订阅字典 ----------- = %@",self.subedDict);
        self.mySessionManager.subscriptions =  self.subedDict;
    }
    else {
        QXLOG(@"不存在，无需取消");
    }
}
#pragma mark - 发布消息
- (void)sendDataToTopic:(NSString *)topic dict:(NSDictionary *)dict {
    QXLOG(@"发送命令 topic = %@  dict = %@",topic,dict);
    
//    [dict setValue:[QPCommonTool dateWithNowSp] forKey:@"time"];
    NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:0 error:nil];
    [self.mySessionManager sendData:data topic:topic qos:MQTTQosLevelAtLeastOnce retain:NO];
}
#pragma mark MQTTSessionManagerDelegate
- (void)handleMessage:(NSData *)data onTopic:(NSString *)topic retained:(BOOL)retained {
    
    if (self.delegate && [self.delegate respondsToSelector:@selector(MQTTClientModel_handleMessage:onTopic:retained:)]) {
        [self.delegate MQTTClientModel_handleMessage:data onTopic:topic retained:retained];
    }
}
- (void)disconnect {
    [self.mySessionManager disconnectWithDisconnectHandler:^(NSError *error) {
        QXLOG(@"断开连接  error = %@",[error description]);
    }];
    [self.mySessionManager setDelegate:nil];
    [self.subedDict removeAllObjects];
    _mySessionManager = nil;
}
- (void)reConnect {
    if (self.mySessionManager && self.mySessionManager.port) {
        if (self.mySessionManager.state == MQTTSessionManagerStateConnected) {
            return;
        }
        self.mySessionManager.delegate = self;
        [self.mySessionManager connectToLast:^(NSError *error) {
            QXLOG(@"重新连接  error = %@",[error description]);
        }];
        self.mySessionManager.subscriptions = self.subedDict;
        
    }else if ([self.username isExist] && [self.password isExist] && [self.cliendId isExist]) {
        [self bindWithUserName:self.username password:self.password cliendId:self.cliendId isSSL:self.isSSL];
    }
    
}

//连接错误之后又连接成功之后
- (void)reConnectForStateError{
 
}

#pragma mark - 懒加载
- (MQTTSessionManager *)mySessionManager {
    if (!_mySessionManager) {
        _mySessionManager = [[MQTTSessionManager alloc]init];
        _mySessionManager.delegate = self;
    }
    return _mySessionManager;
}

- (NSMutableDictionary *)subedDict {
    if (!_subedDict) {
        _subedDict = [NSMutableDictionary dictionary];
    }
    return _subedDict;
}
@end