SDJK_iOS/SDJK/Modules/OtherModule/ExerciseModule/ViewModel/itemViewModel/RQExercisExplainItemViewModel.m

//
//  RQExercisExplainItemViewModel.m
//  SDJK
//
//  Created by 张嵘 on 2022/7/3.
//

#import "RQExercisExplainItemViewModel.h"

@interface RQExercisExplainItemViewModel ()
@property (nonatomic, readwrite, strong) RQExerciseModel *exerciseModel;
@property (nonatomic, readwrite, strong) RQExplainModel *explainModel;
@property (nonatomic, readwrite, strong) YYLabel *yyLabel;
@property (nonatomic, readwrite, strong) NSMutableAttributedString *explainString;


@end

@implementation RQExercisExplainItemViewModel
- (instancetype)initWithRQExerciseModel:(RQExerciseModel *)exerciseModel {
    if (self = [super init]) {
        @weakify(self)
        self.exerciseModel = exerciseModel;
        self.explainModel = [RQ_QUESTION_DB_MANAGER getExplainWithExerciseModel:exerciseModel];
        CGFloat headerHeight = 16.f + 26.f + 16.f + 18.f;
        CGFloat videoHeight = 0;
        CGFloat textHeight = 0;
        CGFloat footerHeight = 16.f;
        if (!RQObjectIsNil(self.explainModel)) {
            if (RQStringIsNotEmpty(self.explainModel.short_video_url)) {
                videoHeight = 8.f + RQ_FIT_HORIZONTAL(184.f);
                self.operation = ^{
                    @strongify(self)
                    RQExplainVideoViewModel *explainVideoViewModel = [[RQExplainVideoViewModel alloc] initWithServices:RQ_APPDELEGATE.services params:@{RQViewModelUtilKey : self.explainModel }];
                    [RQ_APPDELEGATE.services pushViewModel:explainVideoViewModel animated:YES];
                };
            }
            
            if (RQStringIsNotEmpty(exerciseModel.explain_js)) {
                NSMutableAttributedString *text = [[NSMutableAttributedString alloc] initWithString:exerciseModel.explain_js];
                text.yy_font = [UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
                text.yy_lineSpacing = 8;
                text.yy_color = RQ_MAIN_TEXT_COLOR_1;
                self.explainString = text;
                CGFloat height = [self getMessageHeightWithAttributedStr:text andLabel:self.yyLabel];
                textHeight = 24.f + RQ_FIT_HORIZONTAL(30.f) + 16.f  + height;
            }
        }
        
        self.rowHeight = headerHeight + videoHeight + textHeight + footerHeight;
        
        
    }
    return self;
}


- (CGFloat)getMessageHeightWithAttributedStr:(NSMutableAttributedString *)attributedStr andLabel:(YYLabel *)lb {
    lb.attributedText = attributedStr;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH - (16 * 2) - (8 * 2), CGFLOAT_MAX);
    YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:introSize text:attributedStr];
    lb.textLayout = layout;
    CGFloat introHeight = layout.textBoundingSize.height;
    return introHeight;
}

- (YYLabel *)yyLabel {
    if (!_yyLabel) {
        _yyLabel = [[YYLabel alloc] init];
    }
    return _yyLabel;
}

- (NSString *)itemClassName {
    return @"RQExercisExplainCell";
}
@end