Kulexiu/KulexiuForStudent/KulexiuForStudent/Module/Widget/Model/MetronomeManager.m

//
//  MetronomeManager.m
//  KulexiuSchoolStudent
//
//  Created by 王智 on 2023/7/24.
//

#import "MetronomeManager.h"
#import <KSChoosePicker.h>
#import "RhythmChooseView.h"

@interface MetronomeManager ()<KSMetronomePlayerDelegate>

/** 定时器 */
@property (nonatomic, strong) NSTimer *timer;

/** 定时器多少秒循环一次 */
@property (nonatomic, assign) double timerLength;

@property (nonatomic, assign) int currentNo;

@property (nonatomic, assign) NSInteger lastChooseIndex;



@end

@implementation MetronomeManager

+ (instancetype)shareInstance {
    static MetronomeManager *manager = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        manager = [[MetronomeManager alloc] init];
    });
    return manager;
}

- (instancetype)init {
    self = [super init];
    if (self) {
        [self configDefault];
    }
    return self;
}

- (void)configDefault {
    self.speed = 90;
    self.rhythmType = RHYTHM_TYPE_ONE_QUARTERNOTES;
    self.timerLength = 60.0 / (1.0 * self.speed) / ([self getRate]);
    [self resetTimerPlay];
    [self createPlayer];
    self.playVolume = 1.0f;
    self.beatNumber = 4;
    self.lastChooseIndex = 4;
}

- (void)setPlayVolume:(float)playVolume {
    _playVolume = playVolume;
    self.player.volume = playVolume;
}
#pragma mark ---- delegate
- (void)metronomePlayInterruption {
    if (self.isPlaying) {
        [self stopPlay];
    }
    // 播放打断处理
    [self notiferInterruption];
}

- (void)notiferInterruption {
    [[NSNotificationCenter defaultCenter] postNotificationName:ERROR_NOTIFICATION object:nil];
}

-  (void)startPlay {
    if (self.isPlaying == NO) {
        // 重置
        self.currentNo = -1;
//        int bpm = self.speed * [self getRate];

        [self.player playRhythmAction:self.speed rhythmType:self.rhythmType beatNumber:self.beatNumber];
      // 开始播放
        [self.timer setFireDate:[NSDate distantPast]];
    }
    
    self.isPlaying = YES;
}

- (void)stopPlay {
    if (self.isPlaying) {
        self.isPlaying = NO;
        [self.timer setFireDate:[NSDate distantFuture]];//暂停计时器
        self.currentNo = -1;
        [self.player stopPlay];
    }
    
}

- (void)setSpeed:(int)speed {
    _speed = speed;
    int rateFloat = speed;
    self.timerLength = 60.0 / (1.0 * rateFloat) / ([self getRate]);
    NSLog(@"---- %f",self.self.timerLength);
    
    [self resetTimerPlay];
    if (self.isPlaying) {
        [self stopPlay];
        [self startPlay];
    }
}
- (CGFloat)getRate {
    return 1.0;
}
- (void)resetTimerPlay {
    if (_timer) {
        [self resetTimer];
        MJWeakSelf;
        _timer = [NSTimer scheduledTimerWithTimeInterval:self.timerLength repeats:YES block:^(NSTimer * _Nonnull timer) {
            [weakSelf timerAction];
        }];
        [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];
        [_timer setFireDate:[NSDate distantFuture]];
    }
}


- (NSTimer *)timer{
    
    if (!_timer) {
        MJWeakSelf;
        _timer = [NSTimer scheduledTimerWithTimeInterval:self.timerLength repeats:YES block:^(NSTimer * _Nonnull timer) {
            [weakSelf timerAction];
        }];
        [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];
        [_timer setFireDate:[NSDate distantFuture]];
    }
    return _timer;
}

- (void)timerAction {
    [self updateStep];
}

- (void)updateStep {
    
    NSLog(@"---- current no ------ %d ", self.currentNo);
    self.currentNo++;
    // 通知刷新
    if (self.delegate && [self.delegate respondsToSelector:@selector(updateSpotHightState:)]) {
        [self.delegate updateSpotHightState:self.currentNo];
    }
}

#pragma mark -- 重置定时器
- (void)resetTimer{
    [self.timer setFireDate:[NSDate distantPast]];
    [_timer invalidate];
    _timer = nil;
}

- (void)removeAll{
    
    if (_timer) {
        [_timer invalidate];
        _timer = nil;
    }
}

- (void)createPlayer {
    self.player = [[KSMetronomePlayer alloc] init];
    self.player.delegate = self;
}

- (void)freePlayer {
    [self removeAll];
    if (self.player.isPlaying) {
        [self.player stopPlay];
    }
    _player = nil;
}

- (NSString *)getTypeString {
    return [NSString stringWithFormat:@"%zd", self.beatNumber];
}

- (void)beatChooseCallback:(BeatChangeCallback)callback {

    KSChoosePicker *pickerView = [[KSChoosePicker alloc] initWithTitle:@"节拍" sourceData:@[@"0",@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9"] lastChooseIndex:self.lastChooseIndex sureButtonColor:HexRGB(0x1CACF1) chooseReturnWithBlock:^(NSString * _Nonnull returnValue, NSInteger chooseIndex) {
        self.lastChooseIndex = chooseIndex;
        NSInteger beatNumber = [returnValue integerValue];
        self.beatNumber = beatNumber;
        [self changeBeat];
        [self resetRyhthm];
        if (callback) {
            callback(beatNumber);
        }
    } cancel:^{
        
    }];
    [pickerView showPicker];
}

- (void)resetRyhthm {
    self.rhythmType = RHYTHM_TYPE_ONE_QUARTERNOTES;
}

- (void)rhythmChooseCallback:(RhythmChangeCallback)callback {
    RhythmChooseView *chooseView = [RhythmChooseView shareInstance];
    [chooseView configWithRhythmChooseViewWithPreChoose:METRONOME_MANAGER.rhythmType displayView:[NSObject getKeyWindow]];
    [chooseView chooseCallback:^(RHYTHM_TYPE type) {
        self.rhythmType = type;
        [self changeBeat];
        if (callback) {
            callback(type);
        }
    }];
}

- (void)changeBeat {
    self.timerLength = 60.0 / (1.0 * self.speed) / ([self getRate]);
    [self resetTimerPlay];
    [self stopPlay];
}



- (NSString *)imageWithType:(RHYTHM_TYPE)type {
    NSInteger index = type;
    NSArray *array = @[@"rhythm_quarterNote",@"rhythm_two_eighthNote",@"rhythm_quarter_riplet",@"rhythm_four_sixteenthNote",@"rhythm_quarter_and_eighth_riplet",@"rhythm_dottedEighth_and_sixteenthNote",@"rhythm_eighth_and_two_sixteenthNote"];
    return array[index];
}

- (void)resetDefaultConfig {
    [self configDefault];
}
@end