#import "KBKeyboardStressTestVC.h"

@interface KBKeyboardStressTestVC ()
@property(nonatomic, strong) UITextView *textView;
@property(nonatomic, strong) UIButton *startButton;
@property(nonatomic, strong) UIButton *stopButton;
@property(nonatomic, strong) UILabel *statusLabel;
@property(nonatomic, assign) NSInteger currentCycle;
@property(nonatomic, assign) NSInteger totalCycles;
@property(nonatomic, assign) BOOL running;
@end

@implementation KBKeyboardStressTestVC

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = UIColor.whiteColor;
    self.title = @"键盘压力测试";
    self.totalCycles = 200;
    [self buildUI];
    [self updateStatus];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [self stop];
}

- (void)buildUI {
    CGFloat w = UIScreen.mainScreen.bounds.size.width;
    
    self.statusLabel = [[UILabel alloc] initWithFrame:CGRectMake(16, KB_NAV_TOTAL_HEIGHT + 16, w - 32, 22)];
    self.statusLabel.font = [UIFont systemFontOfSize:13];
    self.statusLabel.textColor = [UIColor colorWithWhite:0.2 alpha:1];
    [self.view addSubview:self.statusLabel];
    
    self.textView = [[UITextView alloc] initWithFrame:CGRectMake(16, CGRectGetMaxY(self.statusLabel.frame) + 12, w - 32, 160)];
    self.textView.text = @"把系统输入法切到自定义键盘后，点击开始，会反复显示/隐藏键盘。";
    self.textView.layer.borderColor = [UIColor colorWithWhite:0 alpha:0.15].CGColor;
    self.textView.layer.borderWidth = 0.5;
    self.textView.layer.cornerRadius = 8;
    [self.view addSubview:self.textView];
    
    CGFloat btnW = (w - 16 * 2 - 12) / 2.0;
    self.startButton = [UIButton buttonWithType:UIButtonTypeSystem];
    self.startButton.frame = CGRectMake(16, CGRectGetMaxY(self.textView.frame) + 16, btnW, 44);
    self.startButton.layer.cornerRadius = 10;
    self.startButton.backgroundColor = [UIColor colorWithRed:0.22 green:0.49 blue:0.96 alpha:1];
    [self.startButton setTitleColor:UIColor.whiteColor forState:UIControlStateNormal];
    [self.startButton setTitle:@"开始" forState:UIControlStateNormal];
    [self.startButton addTarget:self action:@selector(onStart) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:self.startButton];
    
    self.stopButton = [UIButton buttonWithType:UIButtonTypeSystem];
    self.stopButton.frame = CGRectMake(CGRectGetMaxX(self.startButton.frame) + 12, CGRectGetMinY(self.startButton.frame), btnW, 44);
    self.stopButton.layer.cornerRadius = 10;
    self.stopButton.backgroundColor = [UIColor colorWithWhite:0.2 alpha:0.08];
    [self.stopButton setTitleColor:[UIColor colorWithWhite:0.15 alpha:1] forState:UIControlStateNormal];
    [self.stopButton setTitle:@"停止" forState:UIControlStateNormal];
    [self.stopButton addTarget:self action:@selector(onStop) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:self.stopButton];
    
    UIButton *oneCycleBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    oneCycleBtn.frame = CGRectMake(16, CGRectGetMaxY(self.startButton.frame) + 12, w - 32, 44);
    oneCycleBtn.layer.cornerRadius = 10;
    oneCycleBtn.backgroundColor = [UIColor colorWithWhite:0.2 alpha:0.08];
    [oneCycleBtn setTitleColor:[UIColor colorWithWhite:0.15 alpha:1] forState:UIControlStateNormal];
    [oneCycleBtn setTitle:@"执行 10 次" forState:UIControlStateNormal];
    [oneCycleBtn addTarget:self action:@selector(onRunTen) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:oneCycleBtn];
}

- (void)onStart {
    self.totalCycles = 200;
    [self start];
}

- (void)onRunTen {
    self.totalCycles = 10;
    [self start];
}

- (void)onStop {
    [self stop];
}

- (void)start {
    if (self.running) {
        return;
    }
    self.running = YES;
    self.currentCycle = 0;
    [self updateStatus];
    [self runNextCycle];
}

- (void)stop {
    self.running = NO;
    [self.textView resignFirstResponder];
    [self updateStatus];
}

- (void)runNextCycle {
    if (!self.running) {
        return;
    }
    if (self.currentCycle >= self.totalCycles) {
        [self stop];
        return;
    }
    
    self.currentCycle += 1;
    [self updateStatus];
    
    __weak typeof(self) weakSelf = self;
    [self.textView becomeFirstResponder];
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.18 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        __strong typeof(weakSelf) self = weakSelf;
        if (!self || !self.running) {
            return;
        }
        [self.textView resignFirstResponder];
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.12 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            __strong typeof(weakSelf) self = weakSelf;
            if (!self) {
                return;
            }
            [self runNextCycle];
        });
    });
}

- (void)updateStatus {
    NSString *run = self.running ? @"运行中" : @"未运行";
    self.statusLabel.text = [NSString stringWithFormat:@"状态：%@  |  进度：%ld/%ld", run, (long)self.currentCycle, (long)self.totalCycles];
    self.startButton.enabled = !self.running;
    self.startButton.alpha = self.running ? 0.5 : 1.0;
    self.stopButton.enabled = self.running;
    self.stopButton.alpha = self.running ? 1.0 : 0.5;
}

@end