Sets the default video quality for videos on iOS YouTube.

YouTubeDefaultVideoQuality.x

#import <YouTubeHeader/MLAVPlayer.h>
#import <YouTubeHeader/MLHAMPlayerItem.h>
#import <YouTubeHeader/MLQuickMenuVideoQualitySettingFormatConstraint.h>

int targetResolution = 1440;
int targetFPS = 60;

static NSString *getClosestQualityLabel(NSArray <MLFormat *> *formats) {
    int minDiff = INT_MAX;
    int selectedFPS = 0;
    NSString *closestQualityLabel;
    for (MLFormat *format in formats) {
        int height = [format height];
        int fps = [format FPS];
        int diff = abs(height - targetResolution);
        if (diff < minDiff || (diff == minDiff && abs(fps - targetFPS) < abs(selectedFPS - targetFPS))) {
            minDiff = diff;
            selectedFPS = fps;
            closestQualityLabel = [format qualityLabel];
        }
    }
    return closestQualityLabel;
}

static MLQuickMenuVideoQualitySettingFormatConstraint *getConstraint(NSString *qualityLabel) {
    MLQuickMenuVideoQualitySettingFormatConstraint *constraint;
    @try {
        constraint = [[%c(MLQuickMenuVideoQualitySettingFormatConstraint) alloc] initWithVideoQualitySetting:3 formatSelectionReason:2 qualityLabel:qualityLabel];
    } @catch (id ex) {
        constraint = [[%c(MLQuickMenuVideoQualitySettingFormatConstraint) alloc] initWithVideoQualitySetting:3 formatSelectionReason:2 qualityLabel:qualityLabel resolutionCap:0];
    }
    return constraint;
}

%hook MLHAMPlayerItem

- (void)onSelectableVideoFormats:(NSArray <MLFormat *> *)formats {
    %orig;
    NSString *qualityLabel = getClosestQualityLabel(formats);
    MLQuickMenuVideoQualitySettingFormatConstraint *constraint = getConstraint(qualityLabel);
    self.videoFormatConstraint = constraint;
}

%end

%hook MLAVPlayer

- (void)streamSelectorHasSelectableVideoFormats:(NSArray <MLFormat *> *)formats {
    %orig;
    NSString *qualityLabel = getClosestQualityLabel(formats);
    MLQuickMenuVideoQualitySettingFormatConstraint *constraint = getConstraint(qualityLabel);
    self.videoFormatConstraint = constraint;
}

%end