//
//  ConnectHotpotViewController.m
//  Ifish
//
//  Created by Minghao Xue on 2018/7/16.
//  Copyright © 2018年 lianlian. All rights reserved.
//

#import "ConnectHotpotViewController.h"
#import "ConnectHotspotTipViewController.h"
#import "dataContorl.h"
#import<SystemConfiguration/CaptiveNetwork.h>
#import "GCDAsyncUdpSocket.h"

@interface ConnectHotpotViewController ()<UITextFieldDelegate, GCDAsyncUdpSocketDelegate>
@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;
@property (weak, nonatomic) IBOutlet UITextField *nameLbl;
@property (strong, nonatomic) IBOutletCollection(UIImageView) NSArray *dashView;
@property (weak, nonatomic) IBOutlet UITextField *pwdTf;
@property (weak, nonatomic) IBOutlet UIView *containerView;

@property (nonatomic, strong) GCDAsyncUdpSocket *socket;

@end

@implementation ConnectHotpotViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.title = @"热点连接";
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keybordframeChanged:) name:UIKeyboardDidChangeFrameNotification object:nil];
    for (UIImageView *view in self.dashView) {
        view.backgroundColor = [UIColor clearColor];
        view.image = [self imageWithLineWithSize:view.frame.size];
    }
}

- (UIImage *)imageWithLineWithSize:(CGSize)size{
    CGFloat width = size.width;
    UIGraphicsBeginImageContext(size);
    CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
    CGFloat lengths[] = {2,2};
    CGContextRef line = UIGraphicsGetCurrentContext();
    CGContextSetStrokeColorWithColor(line, [UIColor colorWithRed:133/255.0 green:133/255.0 blue:133/255.0 alpha:1.0].CGColor);
    CGContextSetLineDash(line, 0, lengths, 1);
    CGContextMoveToPoint(line, 0, 1);
    CGContextAddLineToPoint(line, width-10, 1);
    CGContextStrokePath(line);
    return  UIGraphicsGetImageFromCurrentImageContext();
}

- (void)dealloc {
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (void)keybordframeChanged:(NSNotification *)no {
    NSDictionary *userInfo = no.userInfo;
    
    // 动画的持续时间
    double duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    
    // 键盘的frame
    CGRect keyboardF = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
    keyboardF = [self.view convertRect:keyboardF fromView:[UIApplication sharedApplication].keyWindow];
    CGRect containerViewF = [self.view convertRect:self.containerView.frame fromView:self.scrollView];
    
    CGFloat miniSpacing = 4;
    
    CGFloat offset = CGRectGetMaxY(containerViewF) + miniSpacing - CGRectGetMinY(keyboardF);
    if (offset <= 0) {
        offset = 0;
    }
    [UIView animateWithDuration:duration animations:^{
        self.scrollView.contentInset = UIEdgeInsetsMake(-offset, 0, 0, 0);
    }];
}

- (IBAction)clickHereBtnClicked:(id)sender {
    ConnectHotspotTipViewController *vc = [[ConnectHotspotTipViewController alloc] initWithNibName:@"ConnectHotspotTipViewController" bundle:nil];
    [self.navigationController pushViewController:vc animated:YES];
}
#pragma mark - UITextFieldDelegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
}
- (IBAction)setLinkBtnClicked:(id)sender {
    if (self.nameLbl.text.length == 0) {
        [self.view makeToast:@"请输入正确的路由器名称"];
        return;
    }
    BOOL isRight =[dataContorl isIncludeSpecialCharact:self.pwdTf.text];
    
    if (!isRight) {
        [self.view makeToast:@"路由器密码不能包含特殊字符，只能为数字字母下划线"];
        return;
    }
    
    if (![[self currentWifiSSID].lowercaseString hasPrefix:@"ifish"]) {
        [self.view makeToast:@"请先将手机连接到wifi:ifish-xxxx"];
        return;
    }
    
    NSString *ssidName = self.nameLbl.text;
    NSString *ssidPwd = self.pwdTf.text;
    [self sendToDeviceWithSSIDName:ssidName andSSIDPWD:ssidPwd];
}

- (NSString *)currentWifiSSID {
    NSString *ssid = @"Not Found";
    CFArrayRef myArray = CNCopySupportedInterfaces();
    if (myArray != nil) {
        CFDictionaryRef myDict = CNCopyCurrentNetworkInfo(CFArrayGetValueAtIndex(myArray, 0));
        if (myDict != nil) {
            NSDictionary *dict = (NSDictionary *)CFBridgingRelease(myDict);
            ssid = [dict valueForKey:@"SSID"];
        }
    }
    return ssid;
}

#pragma mark - UDP related

- (void)sendToDeviceWithSSIDName:(NSString *)name andSSIDPWD:(NSString *)pwd {
    self.socket = [[GCDAsyncUdpSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    NSError *error;
    [self.socket bindToPort:9090 error:&error];
    [self.socket enableBroadcast:YES error:&error];
    if (error) {
        [self.view makeToast:error.localizedDescription];
    } else {
        [self.socket beginReceiving:&error];
        
    }
    [self.socket sendData:[self updmessageData:name ssidPwd:pwd] toHost:@"192.168.4.1" port:333 withTimeout:-1 tag:0];
}

- (NSData *)updmessageData:(NSString *)ssidName ssidPwd:(NSString *)ssidPwd {
    return [dataContorl stringToHexData:[NSString stringWithFormat:@"%@\0%@\0", ssidPwd, ssidPwd]];
}

#pragma mark - GCDAsyncUdpSocketDelegate

- (void)udpSocket:(GCDAsyncUdpSocket *)sock didSendDataWithTag:(long)tag {
    [self.view makeToast:@"UDP指令发送成功"];
}

- (void)udpSocket:(GCDAsyncUdpSocket *)sock didNotSendDataWithTag:(long)tag dueToError:(NSError *)error {
    [self.view makeToast:[NSString stringWithFormat:@"UDP指令发送失败：%@", [error localizedDescription]]];
}

- (void)udpSocket:(GCDAsyncUdpSocket *)sock didReceiveData:(NSData *)data fromAddress:(NSData *)address withFilterContext:(id)filterContext {
    [self.view makeToast:[NSString stringWithFormat:@"接收到设备返回UDP数据:%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]]];
}

@end