JSJP_Student/jiaPei/Modules/OtherModules/ExerciseModule/ViewModel/ExercisePage/itemViewModel/RQExerciseQuestionItemViewModel.m

//
//  RQExerciseQuestionItemViewModel.m
//  JSJP
//
//  Created by 张嵘 on 2021/8/16.
//

#import "RQExerciseQuestionItemViewModel.h"

@interface RQExerciseQuestionItemViewModel ()
@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;

@end

@implementation RQExerciseQuestionItemViewModel
- (instancetype)initWithRQExerciseModel:(RQExerciseModel *)exerciseModel {
    if (self = [super init]) {
        @weakify(self)
        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 ([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;
        }
        
        
        
        if (RQStringIsNotEmpty(self.imageString)) {
            __block CGSize imageSize = CGSizeMake(RQ_SCREEN_WIDTH - 32.f, (RQ_SCREEN_WIDTH - 32.f) * (175.f / 345.f));
            if (exerciseModel.ydtQuestionModel.sinaImage) {
                imageSize = exerciseModel.ydtQuestionModel.sinaImage.size;
            } else {
                NSString *cacheKeyStr = [[YYWebImageManager sharedManager] cacheKeyForURL:[NSURL URLWithString:self.imageString]];
                UIImage *cacheImage = [[YYImageCache sharedCache] getImageForKey:cacheKeyStr];
                if (cacheImage) {
                    imageSize = cacheImage.size;
                } else {
                    dispatch_async(dispatch_get_global_queue(0, 0), ^{
                        @strongify(self)
                        // 处理耗时操作的代码块...
                        imageSize = [UIImage getImageSizeWithURL:self.imageString];
                        //通知主线程刷新
                        dispatch_async(dispatch_get_main_queue(), ^{
                            @strongify(self)
                            //回调或者说是通知主线程刷新，
                            if (imageSize.width == 0 || imageSize.height == 0) {
                                self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (175.f / 345.f);
                            } else {
                                self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (imageSize.height / imageSize.width);
                            }
                        });
                    });
                }
            }
            if (imageSize.width == 0 || imageSize.height == 0) {
                self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (175.f / 345.f);
            } else {
                self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (imageSize.height / imageSize.width);
            }
        } else if (RQStringIsNotEmpty(self.videoString)) {
            self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (175.f / 345.f);
        }
        
        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 @"新规题";
}

- (NSMutableAttributedString *)dealQuestionStrWithRQExerciseModel:(RQExerciseModel *)exerciseModel {
    switch (exerciseModel.ydtQuestionModel.Type) {
        case 1:
            self.typeString = @"判断题";
            break;
        case 2:
            self.typeString = @"单选题";
            break;
        case 3:
            self.typeString = @"多选题";
            break;
            
        default:
            self.typeString = @"";
            break;
    }
    
    NSString *questionStr = [NSString stringWithFormat:@"%ld、%@",(long)exerciseModel.ydtQuestionModel.num + 1 ,exerciseModel.ydtQuestionModel.Question];
    
    NSMutableAttributedString *text = [NSMutableAttributedString new];
    NSMutableAttributedString *testText = [NSMutableAttributedString new];
    
    NSMutableAttributedString *typeAttachment = nil;

    QMUIButton *typeBtn = [QMUIButton buttonWithType:UIButtonTypeCustom];
    CGFloat btnHeight = (25.f / 17.f) * RQ_Exercise_Module.exerciseFontSize;
    CGFloat btnWeight = (60.f / 25.f) * btnHeight;
    CGFloat btnCornerRadius = btnHeight / 2.f;
    CGSize btnSize = CGSizeMake(btnWeight, btnHeight);
    typeBtn.size = btnSize;
    [typeBtn setTitle:self.typeString textColor:RQ_MAIN_TEXT_COLOR_WHITE Font:RQ_Exercise_Module.exerciseFontSize - 3 fotState:UIControlStateNormal];
    [typeBtn setBackgroundImage:[UIImage qmui_imageWithColor:RQ_MAIN_COLOR size:btnSize cornerRadiusArray:@[@(btnCornerRadius), @(btnCornerRadius), @0, @(btnCornerRadius)]] forState:UIControlStateNormal];
    
    
    typeAttachment = [NSMutableAttributedString yy_attachmentStringWithContent:typeBtn
                                                               contentMode:UIViewContentModeCenter
                                                            attachmentSize:btnSize
                                                               alignToFont:[UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize]
                                                                 alignment:YYTextVerticalAlignmentCenter];
    [testText appendAttributedString:typeAttachment];
    [testText appendAttributedString:self.spaceAttachment];

    
    
    if ([RQ_YDTQuestion_Module isNewRuleQuestionWithQuestionId:exerciseModel.ydtQuestionModel.ID]) {
        NSMutableAttributedString *newAttachment = nil;
        QMUIButton *newBtn = [QMUIButton buttonWithType:UIButtonTypeCustom];
        newBtn.size = btnSize;
        [newBtn setTitle:@"新规题" textColor:RQ_MAIN_TEXT_COLOR_WHITE Font:RQ_Exercise_Module.exerciseFontSize - 3 fotState:UIControlStateNormal];
        [newBtn setBackgroundImage:[UIImage qmui_imageWithColor:RQColorFromHexString(@"#9C5FED") size:btnSize cornerRadiusArray:@[@(btnCornerRadius), @(btnCornerRadius), @(btnCornerRadius), @(btnCornerRadius)]] forState:UIControlStateNormal];
        newAttachment = [NSMutableAttributedString yy_attachmentStringWithContent:newBtn
                                                                   contentMode:UIViewContentModeCenter
                                                                attachmentSize:btnSize
                                                                   alignToFont:[UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize]
                                                                     alignment:YYTextVerticalAlignmentCenter];
        [testText appendAttributedString:newAttachment];
        [testText appendAttributedString:self.spaceAttachment];
    }
    
    
    NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:questionStr];
    attrString.yy_font = [UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
    attrString.yy_color = RQ_MAIN_TEXT_COLOR_1;
    
//        if (RQStringIsNotEmpty(exerciseModel.titlekeyword) && exerciseModel.isShowSkillExplanation) {
//            [[[exerciseModel.titlekeyword componentsSeparatedByString:@"-"].rac_sequence.signal deliverOnMainThread] subscribeNext:^(NSString * _Nullable skillkeywordStr) {
//                NSRange range = [questionStr rangeOfString:skillkeywordStr];
//                [attrString yy_setColor:RQ_MAIN_TEXT_COLOR_RED range:range];
//                [attrString yy_setFont:[UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize + 2] range:range];
//            }];
//        }
    
//    NSRange range = [string rangeOfString:@"《遵守实验室须知》"];
//    [attrString yy_setColor:[UIColor colorWithHexString:@"#19ADA9"] range:range];
//
//    [attrString yy_setTextHighlightRange:range
//                                   color:[UIColor colorWithHexString:@"#19ADA9"]
//                         backgroundColor:[UIColor blueColor]
//                               tapAction:^(UIView * _Nonnull containerView, NSAttributedString * _Nonnull text, NSRange range, CGRect rect) {
//        [_self showMessage:[NSString stringWithFormat:@"Tap: %@",[text.string substringWithRange:range]]];
//    }];
    [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:RQ_Exercise_Module.exerciseFontSize];
    introText.yy_lineSpacing = 8;
    lb.attributedText = introText;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH - (16 * 2), 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 - (16 * 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;
}

- (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:RQ_Exercise_Module.exerciseFontSize] alignment:YYTextVerticalAlignmentCenter];
    }
    return _spaceAttachment;
}

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