JSJP_Student/jiaPei/Modules/OtherModules/ExaminationModule/ViewModel/ExerciseQuestion/NYExerciseQuestionItemViewModel.m

//
//  NYExerciseQuestionItemViewModel.m
//  jiaPei
//
//  Created by Ning.ge on 2024/10/31.
//  Copyright © 2024 JCZ. All rights reserved.
//

#import "NYExerciseQuestionItemViewModel.h"
#import "payRequsestHandler.h"

@interface NYExerciseQuestionItemViewModel ()
@property (nonatomic, readwrite, strong) RQExerciseModel *exerciseModel;
@property (nonatomic, readwrite, strong) YYLabel *yyLabel;
@property (nonatomic, readwrite, strong) NSString *typeString;
@property (nonatomic, readwrite, strong) NSString *newString;
@property (nonatomic, readwrite, strong) NSMutableAttributedString *qusetionString;
@property (nonatomic, readwrite, assign) CGFloat labelHeight;
@property (nonatomic, readwrite, assign) CGFloat imageHeight;
@property (nonatomic, readwrite, strong) NSString *imageString;
@property (nonatomic, readwrite, strong) NSString *videoString;
@property (nonatomic, readwrite, strong) NSMutableAttributedString *spaceAttachment;

@property (nonatomic, readwrite, strong) QMUIButton *readBtn;

@property (nonatomic,assign) int readCount;

@end

@implementation NYExerciseQuestionItemViewModel
- (instancetype)initWithRQExerciseModel:(RQExerciseModel *)exerciseModel {
    if (self = [super init]) {
        @weakify(self)
        self.readCount = 0;
        self.exerciseModel = exerciseModel;
        dispatch_async(dispatch_get_main_queue(), ^{
            @strongify(self)
            self.qusetionString = [self dealQuestionStrWithRQExerciseModel:exerciseModel];
            self.labelHeight = [self getMessageHeightWithAttributedStr:self.qusetionString andLabel:self.yyLabel];
            
        });
        
        

        if (RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.media_url)) {
            if (RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.sinaimg)) {
                self.imageString = exerciseModel.ydtQuestionModel.media_url;
                self.videoString = @"";
            } else if (RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.video_url)) {
                self.imageString = @"";
                self.videoString = exerciseModel.ydtQuestionModel.media_url;
            } else {
                self.imageString = @"";
                self.videoString = @"";
            }
        } else {
            self.imageString = @"";
            self.videoString = @"";
        }
        if (RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.sinaimg) || RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.media_url)) {
            if (!RQObjectIsNil(exerciseModel.ydtQuestionModel.media_content)) {
                NSString *imageStr = [exerciseModel.ydtQuestionModel.media_content base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
                UIImage *sinaImage = [UIImage sd_imageWithData:[NSData dataWithBase64EncodedString:imageStr] scale:1 firstFrameOnly:YES];
                exerciseModel.ydtQuestionModel.sinaImage = sinaImage;
            } else {
                NSString *media_name;
                if(RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.sinaimg)){//不为空
                    media_name = exerciseModel.ydtQuestionModel.sinaimg;
                    self.imageString = exerciseModel.ydtQuestionModel.sinaimg;
                }else{
                    if ([exerciseModel.ydtQuestionModel.media_url containsString:@"https://"]) {
                        media_name = [exerciseModel.ydtQuestionModel.media_url componentsSeparatedByString:@"/"].lastObject;
                    }
                }
                NSData *mediaData = [RQ_YDTQuestion_Module getMediaDataWithMediaName:media_name];
                if (mediaData) {
                    NSString *imageStr = [mediaData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
                    UIImage *sinaImage = [UIImage sd_imageWithData:[NSData dataWithBase64EncodedString:imageStr] scale:1 firstFrameOnly:YES];
                    exerciseModel.ydtQuestionModel.sinaImage = sinaImage;
                }
            }
            
        } else if (RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.video_url) && RQStringIsNotEmpty(exerciseModel.ydtQuestionModel.media_url)) {
            NSString *media_name;
            if ([exerciseModel.ydtQuestionModel.video_url containsString:@"https://"]) {
                media_name = [exerciseModel.ydtQuestionModel.video_url componentsSeparatedByString:@"/"].lastObject;
            } else {
                media_name = exerciseModel.ydtQuestionModel.video_url;
            }
            NSURL *video_filePath_Url;
            if (!RQObjectIsNil(exerciseModel.ydtQuestionModel.media_content) && !RQ_COMMON_MANAGER.JSJP_Is_Online_Media_Video) {
                NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                NSString *documentsDirectory = [paths objectAtIndex:0];
                NSString *path = [documentsDirectory stringByAppendingPathComponent:media_name];
                [[NSFileManager defaultManager] createFileAtPath:path contents:exerciseModel.ydtQuestionModel.media_content attributes:nil];
                video_filePath_Url = [NSURL fileURLWithPath:path];
            }
            exerciseModel.ydtQuestionModel.video_filePath_Url = video_filePath_Url;
        }
        
        self.imageHeight = 0;
        self.rowHeight = 16.f + self.labelHeight + ((self.imageHeight == 0)? 0 : (16.f + self.imageHeight)) + 16.f;
        
        [[[RACObserve(RQ_Exercise_Module, exerciseFontSize) takeUntil:self.rac_willDeallocSignal] deliverOnMainThread] subscribeNext:^(id  _Nullable x) {
            @strongify(self)
            self.qusetionString = [self dealQuestionStrWithRQExerciseModel:exerciseModel];
            self.labelHeight = [self getMessageHeightWithAttributedStr:self.qusetionString andLabel:self.yyLabel];
        }];
        
        
        RAC(self, rowHeight) = [[RACSignal combineLatest:@[[RACObserve(RQ_Exercise_Module, exerciseFontSize) takeUntil:self.rac_willDeallocSignal],[RACObserve(self, imageHeight) takeUntil:self.rac_willDeallocSignal],[RACObserve(self, labelHeight) takeUntil:self.rac_willDeallocSignal]] reduce:^(NSNumber *exerciseFontSize, NSNumber *imageHeight, NSNumber *labelHeight) {
            return @(16.f + labelHeight.floatValue + ((imageHeight.floatValue == 0)? 0 : (16.f + imageHeight.floatValue)) + 16.f);
        }] deliverOnMainThread] ;
        
    }
    return self;
}

- (NSString *)newString {
    return @"";
}

- (NSMutableAttributedString *)dealQuestionStrWithRQExerciseModel:(RQExerciseModel *)exerciseModel {
    
    NSString *questionStr = [NSString stringWithFormat:@"%ld、%@",(long)exerciseModel.ydtQuestionModel.num + 1 ,exerciseModel.ydtQuestionModel.Question];
    
    NSMutableAttributedString *text = [NSMutableAttributedString new];
    NSMutableAttributedString *testText = [NSMutableAttributedString new];
    
    [testText appendAttributedString:self.spaceAttachment];

    
    NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:questionStr];
    attrString.yy_font = [UIFont systemFontOfSize:16];
    attrString.yy_color = RQ_MAIN_TEXT_COLOR_1;
    
    [testText appendAttributedString: attrString];
    
    
    [text appendAttributedString:testText];
//    [text appendAttributedString:[self padding]];
    text.yy_lineSpacing = 8;
    return text;
}

/**
 *  获取lb的高度
 *  @param mess lb.text
 *  @param lb (YYLabel *)label
 *  @return lb的高度
 */
- (CGFloat)getMessageHeight:(NSString *)mess andLabel:(YYLabel *)lb {
    NSMutableAttributedString *introText = [[NSMutableAttributedString alloc] initWithString:mess];
    introText.yy_font = [UIFont boldSystemFontOfSize:16];
    introText.yy_lineSpacing = 8;
    lb.attributedText = introText;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH-131 -225 - (16 * 4)-40, CGFLOAT_MAX);
    YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:introSize text:introText];
    lb.textLayout = layout;
    CGFloat introHeight = layout.textBoundingSize.height;
    return introHeight;
}

- (CGFloat)getMessageHeightWithAttributedStr:(NSMutableAttributedString *)attributedStr andLabel:(YYLabel *)lb {
    lb.attributedText = attributedStr;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH-131 -225 - (16 * 4)-40, 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;
}

- (NSMutableAttributedString *)spaceAttachment {
    if (!_spaceAttachment) {
        UIView *spaceView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 4, 25)];
        _spaceAttachment = [NSMutableAttributedString yy_attachmentStringWithContent:spaceView contentMode:UIViewContentModeCenter attachmentSize:CGSizeMake(4, 25) alignToFont:[UIFont boldSystemFontOfSize:16] alignment:YYTextVerticalAlignmentCenter];
    }
    return _spaceAttachment;
}

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


@end