//
//  DFPlayerUIManager.m
//  DFPlayer
//
//  Created by ihoudf on 2017/7/20.
//  Copyright © 2017年 ihoudf. All rights reserved.
//

#import "DFPlayerUIManager.h"
#import "DFPlayer.h"
#import "DFPlayerTool.h"
#import "DFPlayerLyricsTableview.h"
#import <MediaPlayer/MediaPlayer.h>

#pragma mark - DFPlayerSlider

@interface DFPlayerSlider : UISlider
@property (nonatomic, assign) CGFloat trackHeight;
@end

@implementation DFPlayerSlider

- (CGRect)trackRectForBounds:(CGRect)bounds{
    return CGRectMake(0, (CGRectGetHeight(self.frame)-self.trackHeight) / 2, CGRectGetWidth(self.frame), self.trackHeight);
}

@end

#pragma mark -  DFPlayer控制管理器

//KEY
NSString * const DFStateKey          = @"state";
NSString * const DFBufferProgressKey = @"bufferProgress";
NSString * const DFProgressKey       = @"progress";
NSString * const DFCurrentTimeKey    = @"currentTime";
NSString * const DFTotalTimeKey      = @"totalTime";

typedef void(^DFPlayerLyricsBlock)(NSString *onPlayingLyrics);

@interface DFPlayerUIManager() <DFPlayerLyricsTableviewDelegate>
{
    BOOL _stopUpdate;
    BOOL _isSeek;
}

@property (nonatomic, strong) UIButton          *playBtn;
@property (nonatomic, strong) UIButton          *typeBtn;
@property (nonatomic, strong) UIProgressView    *bufferProgressView;
@property (nonatomic, strong) DFPlayerSlider    *progressSlider;
@property (nonatomic, strong) UILabel           *currentTimeLabel;
@property (nonatomic, strong) UILabel           *totalTimeLabel;
@property (nonatomic, strong) DFPlayerLyricsTableview *lyricsTableView;
@property (nonatomic, copy) DFPlayerLyricsBlock lyricsBlock;

@property (nonatomic, strong) UIImage *playImage;
@property (nonatomic, strong) UIImage *pauseImage;
@property (nonatomic, strong) UIImage *singleImage;
@property (nonatomic, strong) UIImage *circleImage;
@property (nonatomic, strong) UIImage *shuffleImage;

@end

@implementation DFPlayerUIManager

+ (DFPlayerUIManager *)sharedManager{
    static DFPlayerUIManager *manager = nil;
    static dispatch_once_t predicate;
    dispatch_once(&predicate, ^{
        manager = [[[self class] alloc] init];
    });
    return manager;
}

- (UIButton *)button:(CGRect)frame
               image:(UIImage *)image
           superView:(UIView *)superView
               block:(nullable void (^)(void))block
              action:(nullable void(^)(void))action{
    UIButton *btn = [UIButton buttonWithType:(UIButtonTypeSystem)];
    btn.frame = frame;
    [btn setBackgroundImage:image forState:(UIControlStateNormal)];
    btn.handleButtonActionBlock = ^(UIButton * _Nullable sender) {
        if (block) {
            block();
        }
        if (action) {
            action();
        }
    };
    [superView addSubview:btn];
    return btn;
}

- (UILabel *)label:(CGRect)frame
         textColor:(UIColor *)textColor
     textAlignment:(NSTextAlignment)textAlignment
              font:(UIFont *)font
         superView:(UIView *)superView
       observerKey:(NSString *)observerKey{
    UILabel *label = [[UILabel alloc] initWithFrame:frame];
    label.text = @"00:00";
    label.textColor = textColor;
    label.textAlignment = textAlignment;
    label.font = font;
    [superView addSubview:label];
    [[DFPlayer sharedPlayer] addObserver:self forKeyPath:observerKey options:NSKeyValueObservingOptionNew context:nil];
    return label;
}

- (void)df_stopUpdate{
    _stopUpdate = YES;
    self.lyricsTableView.stopUpdate = YES;
}

- (void)df_resumeUpdate{
    _stopUpdate = NO;
    self.lyricsTableView.stopUpdate = NO;
}


#pragma mark - 播放暂停按钮
- (UIButton *)df_playPauseBtnWithFrame:(CGRect)frame
                             playImage:(UIImage *)playImage
                            pauseImage:(UIImage *)pauseImage
                             superView:(UIView *)superView
                                 block:(nullable void (^)(void))block{
    self.playImage = playImage;
    self.pauseImage = pauseImage;
    UIImage *img = [DFPlayer sharedPlayer].state == DFPlayerStatePlaying ? self.playImage : self.pauseImage;
    self.playBtn = [self button:frame image:img superView:superView block:block action:^{
        if ([DFPlayer sharedPlayer].state == DFPlayerStatePlaying) {
            [[DFPlayer sharedPlayer] df_pause];
        }else{
            [[DFPlayer sharedPlayer] df_play];
        }
    }];
    [[DFPlayer sharedPlayer] addObserver:self forKeyPath:DFStateKey options:NSKeyValueObservingOptionNew context:nil];
    return self.playBtn;
}

#pragma mark - 上一首按钮
- (UIButton *)df_lastBtnWithFrame:(CGRect)frame
                            image:(UIImage *)image
                        superView:(UIView *)superView
                            block:(void (^)(void))block{
    return [self button:frame image:image superView:superView block:block action:^{
        [[DFPlayer sharedPlayer] df_last];
    }];
}

#pragma mark - 下一首按钮
- (UIButton *)df_nextBtnWithFrame:(CGRect)frame
                            image:(UIImage *)image
                        superView:(UIView *)superView
                            block:(void (^)(void))block{
    return [self button:frame image:image superView:superView block:block action:^{
        [[DFPlayer sharedPlayer] df_next];
    }];
}

#pragma mark - 播放模式设置按钮
- (UIButton *)df_typeBtnWithFrame:(CGRect)frame
                      singleImage:(UIImage *)singleImage
                      circleImage:(UIImage *)circleImage
                     shuffleImage:(UIImage *)shuffleImage
                        superView:(UIView *)superView
                            block:(void (^)(void))block{
    
    if ([DFPlayer sharedPlayer].playMode == DFPlayerModeOnlyOnce) {
        return nil;
    }
    self.singleImage = singleImage;
    self.circleImage = circleImage;
    self.shuffleImage = shuffleImage;
    
    UIImage *img = [UIImage new];
    if ([DFPlayer sharedPlayer].playMode == DFPlayerModeSingleCycle) {
        img = self.singleImage;
    }else if ([DFPlayer sharedPlayer].playMode == DFPlayerModeOrderCycle){
        img = self.circleImage;
    }else{
        img = self.shuffleImage;
    }
    UIButton *btn = [self button:frame image:img superView:superView block:block action:nil];
    btn.handleButtonActionBlock = ^(UIButton * _Nullable sender) {
        switch ([DFPlayer sharedPlayer].playMode) {
            case DFPlayerModeSingleCycle:
                [DFPlayer sharedPlayer].playMode = DFPlayerModeOrderCycle;
                [sender setBackgroundImage:self.circleImage forState:(UIControlStateNormal)];
                break;
            case DFPlayerModeOrderCycle:
                [DFPlayer sharedPlayer].playMode = DFPlayerModeShuffleCycle;
                [sender setBackgroundImage:self.shuffleImage forState:(UIControlStateNormal)];
                break;
            case DFPlayerModeShuffleCycle:
                [DFPlayer sharedPlayer].playMode = DFPlayerModeSingleCycle;
                [sender setBackgroundImage:self.singleImage forState:(UIControlStateNormal)];
                break;
            default:
                break;
        }
    };
    return btn;
}

#pragma mark - 音频当前时间
- (UILabel *)df_currentTimeLabelWithFrame:(CGRect)frame
                                textColor:(UIColor *)textColor
                            textAlignment:(NSTextAlignment)textAlignment
                                     font:(UIFont *)font
                                superView:(UIView *)superView{
    self.currentTimeLabel = [self label:frame textColor:textColor textAlignment:textAlignment font:font superView:superView observerKey:DFCurrentTimeKey];
    return self.currentTimeLabel;
}

#pragma mark - 音频总时长
- (UILabel *)df_totalTimeLabelWithFrame:(CGRect)frame
                              textColor:(UIColor *)textColor
                          textAlignment:(NSTextAlignment)textAlignment
                                   font:(UIFont *)font
                              superView:(UIView *)superView{
    self.totalTimeLabel = [self label:frame textColor:textColor textAlignment:textAlignment font:font superView:superView observerKey:DFTotalTimeKey];
    return self.totalTimeLabel;
}

#pragma mark - 缓冲进度条
- (UIProgressView *)df_bufferViewWithFrame:(CGRect)frame
                            trackTintColor:(UIColor *)trackTintColor
                         progressTintColor:(UIColor *)progressTintColor
                                 superView:(UIView *)superView{
    self.bufferProgressView = [[UIProgressView alloc] initWithFrame:frame];
    self.bufferProgressView.trackTintColor = trackTintColor;
    self.bufferProgressView.progressTintColor = progressTintColor;
    [superView addSubview:self.bufferProgressView];
    [[DFPlayer sharedPlayer] addObserver:self forKeyPath:DFBufferProgressKey options:NSKeyValueObservingOptionNew context:nil];
    return self.bufferProgressView;
}

#pragma mark - 播放进度条
- (UISlider *)df_sliderWithFrame:(CGRect)frame
           minimumTrackTintColor:(UIColor *)minimumTrackTintColor
           maximumTrackTintColor:(UIColor *)maximumTrackTintColor
                     trackHeight:(CGFloat)trackHeight
                      thumbImage:(UIImage *)thumbImage
                       superView:(UIView *)superView{
    self.progressSlider = [[DFPlayerSlider alloc] initWithFrame:frame];
    self.progressSlider.trackHeight = trackHeight;
    [self.progressSlider setThumbImage:thumbImage forState:UIControlStateNormal];
    self.progressSlider.minimumValue = 0;
    self.progressSlider.maximumValue = 1;
    self.progressSlider.minimumTrackTintColor = minimumTrackTintColor;
    self.progressSlider.maximumTrackTintColor = maximumTrackTintColor;
    [superView addSubview:self.progressSlider];
    
    [[DFPlayer sharedPlayer] addObserver:self forKeyPath:DFProgressKey options:NSKeyValueObservingOptionNew context:nil];
    
    //开始滑动
    [self.progressSlider addTarget:self action:@selector(progressSliderTouchBegan:) forControlEvents:UIControlEventTouchDown];
    //滑动中
    [self.progressSlider addTarget:self action:@selector(progressSliderValueChanged:) forControlEvents:UIControlEventValueChanged];
    //滑动结束
    [self.progressSlider addTarget:self action:@selector(progressSliderTouchEnded:) forControlEvents:UIControlEventTouchUpInside | UIControlEventTouchCancel | UIControlEventTouchUpOutside];
    //点击slider
    UITapGestureRecognizer *sliderTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapSliderAction:)];
    [self.progressSlider addGestureRecognizer:sliderTap];
    return self.progressSlider;
}

#pragma mark 刷新总时长
- (void)RefreshTotalTimeLabelFun
{
    [self configTimeLabel:self.totalTimeLabel time:[DFPlayer sharedPlayer].totalTime];
}

- (void)progressSliderTouchBegan:(UISlider *)sender{
    _isSeek = YES;
}

- (void)progressSliderValueChanged:(UISlider *)sender{
    CGFloat time = [DFPlayer sharedPlayer].totalTime * self.progressSlider.value;
    [self configTimeLabel:self.currentTimeLabel time:time];
}

- (void)progressSliderTouchEnded:(UISlider *)sender{
    [self seek:self.progressSlider.value];
}

- (void)handleTapSliderAction:(UITapGestureRecognizer *)tap{
    if ([tap.view isKindOfClass:[UISlider class]]) {
        _isSeek = YES;
        UISlider *slider = (UISlider *)tap.view;
        CGPoint point    = [tap locationInView:slider];
        CGFloat value    = point.x / slider.frame.size.width;
        [self seek:value];
    }
}

- (void)seek:(CGFloat)value{
     [[DFPlayer sharedPlayer] df_seekToTime:value completionBlock:^{
         [[NSNotificationCenter defaultCenter] postNotificationName:DFPlayerNotificationSeekEnd object:nil];
         self->_isSeek = NO;
     }];
}

#pragma mark - KVO
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{
    if (object == [DFPlayer sharedPlayer]) {
        dispatch_async(dispatch_get_main_queue(), ^{
            if ([keyPath isEqualToString:DFStateKey]) {
                if (!self->_isSeek) {
                    UIImage *img = [DFPlayer sharedPlayer].state == (DFPlayerStateBuffering | DFPlayerStatePlaying) ? self.pauseImage : self.playImage;
                    [self.playBtn setBackgroundImage:img forState:(UIControlStateNormal)];
                }
            }else{
                if (self->_stopUpdate) {
                    return;
                }
                if ([keyPath isEqualToString:DFBufferProgressKey]){
                    [self.bufferProgressView setProgress:[DFPlayer sharedPlayer].bufferProgress];
                }else if ([keyPath isEqualToString:DFProgressKey]){
                    if (!self->_isSeek) {
                        if (self.progressSlider.state != UIControlStateHighlighted) {
                            self.progressSlider.value = [DFPlayer sharedPlayer].progress;
                        }
                    }
                }else if ([keyPath isEqualToString:DFCurrentTimeKey]){
                    if (!self->_isSeek) {
                        [self configTimeLabel:self.currentTimeLabel time:[DFPlayer sharedPlayer].currentTime];
                    }
                }else if ([keyPath isEqualToString:DFTotalTimeKey]){
                    [self configTimeLabel:self.totalTimeLabel time:[DFPlayer sharedPlayer].totalTime];
                }
            }
        });
    }
}

- (void)configTimeLabel:(UILabel *)label time:(CGFloat)time{
    NSInteger seconds = (NSInteger)time % 60;
    NSInteger minutes = ((NSInteger)time / 60) % 60;
    dispatch_async(dispatch_get_main_queue(), ^{
        label.text = [NSString stringWithFormat:@"%02ld:%02ld",(long)minutes,(long)seconds];
    });
}

- (void)dealloc{
    [[DFPlayer sharedPlayer] removeObserver:self forKeyPath:DFStateKey];
    [[DFPlayer sharedPlayer] removeObserver:self forKeyPath:DFBufferProgressKey];
    [[DFPlayer sharedPlayer] removeObserver:self forKeyPath:DFProgressKey];
    [[DFPlayer sharedPlayer] removeObserver:self forKeyPath:DFCurrentTimeKey];
    [[DFPlayer sharedPlayer] removeObserver:self forKeyPath:DFTotalTimeKey];
}

#pragma mark - 歌词tableview

- (UITableView *)df_lyricTableViewWithFrame:(CGRect)frame
                              cellRowHeight:(CGFloat)cellRowHeight
                        cellBackgroundColor:(UIColor *)cellBackgroundColor
          currentLineLrcForegroundTextColor:(nullable UIColor *)currentLineLrcForegroundTextColor
          currentLineLrcBackgroundTextColor:(UIColor *)currentLineLrcBackgroundTextColor
            otherLineLrcBackgroundTextColor:(UIColor *)otherLineLrcBackgroundTextColor
                         currentLineLrcFont:(UIFont *)currentLineLrcFont
                           otherLineLrcFont:(UIFont *)otherLineLrcFont
                                  superView:(UIView *)superView
                                      block:(nullable void (^)(NSString * onPlayingLyrics))block{
    self.lyricsTableView = [[DFPlayerLyricsTableview alloc] init];
    self.lyricsTableView.frame                             = frame;
    self.lyricsTableView.backgroundColor                   = cellBackgroundColor;
    self.lyricsTableView.cellRowHeight                     = cellRowHeight;
    self.lyricsTableView.cellBackgroundColor               = cellBackgroundColor;
    self.lyricsTableView.currentLineLrcForegroundTextColor = currentLineLrcForegroundTextColor;
    self.lyricsTableView.currentLineLrcBackgroundTextColor = currentLineLrcBackgroundTextColor;
    self.lyricsTableView.otherLineLrcBackgroundTextColor   = otherLineLrcBackgroundTextColor;
    self.lyricsTableView.currentLineLrcFont                = currentLineLrcFont;
    self.lyricsTableView.otherLineLrcFont                  = otherLineLrcFont;
    self.lyricsTableView.lrcTableViewSuperview             = superView;
    self.lyricsTableView.lyricsDelegate                    = self;
    [superView addSubview:self.lyricsTableView];
    if (block) { self.lyricsBlock = block; }
    return self.lyricsTableView;
}

- (void)df_lyricsTableview:(DFPlayerLyricsTableview *)lyricsTableview
           onPlayingLyrics:(NSString *)onPlayingLyrics{
    if (self.lyricsBlock) {
        self.lyricsBlock(onPlayingLyrics);
    }
}

/**释放播放器UI*/
- (void)dfUI_deallocPlayer
{
    if(_playBtn){
        _playBtn = nil;
    }
   
    if(_typeBtn){
        _typeBtn = nil;
    }
    
    if(_bufferProgressView){
        _bufferProgressView = nil;
    }
   
    if(_progressSlider){
        _progressSlider = nil;
    }
    
    if(_currentTimeLabel){
        _currentTimeLabel = nil;
    }

    if(_totalTimeLabel){
        _totalTimeLabel = nil;
    }
    
    if(_lyricsTableView){
        _lyricsTableView = nil;
    }
    
    if(_playImage){
        _playImage = nil;
    }
   
    if(_pauseImage){
        _pauseImage = nil;
    }

    if(_singleImage){
        _singleImage = nil;
    }
  
    if(_circleImage){
        _circleImage = nil;
    }
    
    if(_shuffleImage){
        _shuffleImage = nil;
    }
}
@end