//
//  ConnectTestViewController.m
//  RayProxyDemo
//
//  Created by Sim Tsai on 2023/8/28.
//

#import "ConnectTestViewController.h"
#import <RayProxy/RaylinkProxy.h>
#import <CocoaAsyncSocket/GCDAsyncSocket.h>

@interface ConnectTestViewController ()<
GCDAsyncSocketDelegate,
RaylinkProxyDelegate
> {
    dispatch_queue_t initProxyQueue;
}
@property (weak, nonatomic) IBOutlet UILabel *sdnConnectStateLab;
@property (weak, nonatomic) IBOutlet UILabel *sdnIDLab;
@property (weak, nonatomic) IBOutlet UITextField *sdnIdTF;
@property (weak, nonatomic) IBOutlet UIButton *connectBtn;
@property (weak, nonatomic) IBOutlet UILabel *serverPortLab;

@property (nonatomic, strong) NSTimer *connectCheckTimer;

@property (nonatomic, strong) GCDAsyncSocket *socket;

@property (nonatomic, strong) GCDAsyncSocket *serverSocket;

@property (nonatomic, assign) BOOL sdnConnected;
@property (nonatomic, assign) BOOL peerConnected;

@property (nonatomic, assign) NSInteger tcpPort;
@property (weak, nonatomic) IBOutlet UIButton *sendBtn;
@property (weak, nonatomic) IBOutlet UILabel *revcLab;
@property (weak, nonatomic) IBOutlet UITextField *peerPortTF;
@property (weak, nonatomic) IBOutlet UITextField *messageTF;

@end

@implementation ConnectTestViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.sdnConnected = NO;
    self.peerConnected = NO;
    
    self.sendBtn.enabled = NO;
    
    self.sdnConnectStateLab.text = @"SDN state: Connectting";
    self.sdnIDLab.text = @"My SDN ID:";
    
    RaylinkProxy.sharedManager.delegate = self;
    
    initProxyQueue = dispatch_queue_create("init_proxy", 0);
    
    NSURL *logUrl = [[NSFileManager.defaultManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask].firstObject URLByAppendingPathComponent:@"logs"];
    
    if (![NSFileManager.defaultManager fileExistsAtPath:logUrl.path]) {
        [NSFileManager.defaultManager createDirectoryAtURL:logUrl withIntermediateDirectories:YES attributes:NULL error:NULL];
    }
    
    dispatch_async(initProxyQueue, ^{
        NSData *sdnInfo = [NSData dataWithContentsOfURL:[[NSBundle.mainBundle bundleURL] URLByAppendingPathComponent:@"planet.1ali_3ry_peer"]];
        
        /// 1. 初始化代理库
        [RaylinkProxy.sharedManager initProxy:logUrl.path rootSdnInfo:sdnInfo];
    });
    
    
    /// 作为服务端时，启动端口监听
    self.serverSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    
    if ([self.serverSocket acceptOnPort:0 error:NULL]) {
        self.serverPortLab.text = [NSString stringWithFormat: @"server port: %d", self.serverSocket.localPort];
        NSLog(@"accept ok");
    }
    
    
    /// 启动定时器监听 SND 连接状态
    self.connectCheckTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 repeats:YES block:^(NSTimer * _Nonnull timer) {
        
        /// 2. 监听SDN 连接状态
        bool connected = [RaylinkProxy.sharedManager isSdnConnected];
        if (self.sdnConnected == connected) {
            return;
        }
        
        self.sdnConnected = connected;
        
        if (self.sdnConnected) {
            
            self.sdnConnectStateLab.text = @"SDN state: Connected";
            self.sdnIDLab.text = [@"My SDN ID: " stringByAppendingString:[RaylinkProxy.sharedManager getSdnId]];
            
                
        } else {
            self.sdnConnectStateLab.text = @"SDN state: Connectting";
        }
        
        
    }];
    
    
    
}


- (IBAction)onConnect:(id)sender {
    
    if (self.peerConnected == YES) {
        [self disconnect];
        return;
    }
    
    if (self.sdnIdTF.text.length <= 0) {
        return;
    }
    
    if (self.peerPortTF.text.length <= 0) {
        return;
    }
    
    /// 3. 根据对端的 SDN ID 创建连接
    [RaylinkProxy.sharedManager createNewConnection:self.sdnIdTF.text];
    
    /// 4. 创建 HttpService
    self.tcpPort = [RaylinkProxy.sharedManager createHttpService:self.sdnIdTF.text];
        
    self.socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    
    /// 6. 添加端口防火墙
    [RaylinkProxy.sharedManager addSdnId:self.sdnIdTF.text allowPort:[self.peerPortTF.text intValue]];
    
    [self.connectBtn setEnabled:NO];
    
    [self.connectBtn setTitle:@"连接中..." forState:UIControlStateDisabled];
    
}

- (void)disconnect {
    [RaylinkProxy.sharedManager closeConnection:self.sdnIdTF.text];
    [RaylinkProxy.sharedManager closeHttpService:self.sdnIdTF.text];
    [self.connectBtn setTitle:@"连接" forState:UIControlStateNormal];
    self.peerConnected = NO;
}

- (IBAction)onClickSend:(id)sender {
    
    if (self.messageTF.text.length <= 0) {
        return;
    }
    
    [self.socket writeData:[self.messageTF.text dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1 tag:0];
    
}

- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket {
    
    NSLog(@"didAcceptNewSocket");
    
    
    [newSocket setDelegate:self delegateQueue:dispatch_get_main_queue()];
    
    NSThread *revcThread = [[NSThread alloc] initWithBlock:^{
        
        while (true) {
            [newSocket readDataWithTimeout:-1 tag:0];
            [NSThread sleepForTimeInterval:0.1];
        }
    }];
    
    [revcThread start];
    
}

- (void)onProxyConnected:(NSString *)sdnId status:(int)status {
    if (status == 0) {
        /// 6. 等待连接成功回调，创建 TCP socket 连接 HttpService 的端口
        [self.socket connectToHost:@"127.0.0.1" onPort:self.tcpPort error:NULL];
        [self.connectBtn setTitle:@"连接成功" forState:UIControlStateDisabled];
        [self.sendBtn setEnabled:YES];
    } else {
        [self.connectBtn setTitle:@"连接中..." forState:UIControlStateDisabled];
        [self.sendBtn setEnabled:NO];
    }
}

- (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port {
    
    NSLog(@"didConnectToHost %d", port);
    
    NSThread *thread = [[NSThread alloc] initWithBlock:^{
        while (true) {

            [self.socket readDataWithTimeout:-1 tag:0];
            [NSThread sleepForTimeInterval:0.1];

        }
    }];

    [thread start];
    
    /// 7. Socket 连接成功后，通过 socket  发送, self.peerPortTF 为对端服务端口
    [sock writeData:[[NSString stringWithFormat:@"CONNECT 127.0.0.1:%@ HTTP/1.0\r\n\r\n", self.peerPortTF.text] dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1 tag:0];

    NSLog(@"readDataToData");
    
}

- (void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag
{
    NSLog(@"socket:%p didWriteDataWithTag:%ld", sock, tag);
}

- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag {
    
    
    if (tag == 0) {
        
        NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        
        /// 8. 收到包含 `HTTP/1.0 200`的字符串，则认为连接成功。可以正常给对端发消息了
        if ([str containsString:@"HTTP/1.0 200"]) {
            NSLog(@"Connected");
            self.peerConnected = YES;
            self.connectBtn.enabled = YES;
            [self.connectBtn setTitle:@"断开连接" forState:UIControlStateNormal];
        }
        
    }
    
    self.revcLab.text = [NSString stringWithFormat:@"接收：%@", [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]];
}

@end